Roof Erector’s Handbook
For the installation and bracing ofpre-fabricated timber roof trusses
Volume 2
Including large span roofs
Published by the Institute forTimber Construction South Africa
© 01-07-2001
Erector
Revised Edition 2010/11
Erector’s name
Region
Cell number
Email address
Certificate of Competence no.
Photo/Company Stamp
PAGE 1PAGE 1
FOR A SAFE, LEGAL ROOF!
Erector
Roof Erector’s HandbookFOR ERECTING PREFABRICATED TIMBER ROOF TRUSSES
VOLUME TWO - ADVANCED LEVELFor All Category Carpenters (ITC Rating)
Text edited by Victor Booth Pr. Eng. Amended drawings by Stefan Münster
Original drawings courtesy of: International Truss Systems (Pty) Ltd.
First Edition July 2001All copyright reserved by the Institute for Timber Construction
INTRODUCTION
The details in this handbook are a compilation of erection and bracing details that are issued with the roof layout supplied by the Prefabricated Timber Truss Fabricator as part of the site documentation or incorporated in the workshop drawings. These details cover nearly all the standard aspects of erecting and bracing all categories of timber roofs.
Alternative details may be issued by the design engineer, in which case these details override those published in this book for the particular structure that they have been designed for.
All trusses and all bracing requirements must be shown on the roof plan supplied by the truss manufacturer.
Prevailing conditions must be considered where it may be necessary for the specification of corrosion proofed nails for securing of metal bracing strap, metal connectors, hangers and fixing of timber members.
The Magisterial districts or towns specified for treatment of sawn timber as published in SANS 10005:1994 (SABS 05:1994) could be used as a guideline for use of corrosion proofed nails where doubt exists.
Note: All metal bracing, hangers, clips and the like must be fixed strictly in accordance with the manufacturer’s instructions.
Published by the Institute for Timber Construction-South AfricaP.O. Box 686, ISANDO 1600, South Africatel: +27 (0)11 974-1061fax: +27 (0)11 392-6155toll free:
email: [email protected]
o
0800TIMBER846237
website: www.itc-sa.org
Mitek SA (Pty) Ltd.
Alpine Automation SA (Pty) Ltd.
PAGE 2PAGE 1
Erector
PAGE 1
FOREWORD
ITC-SA gives recognition to engineers with substantial experience and proven competence in timber engineering by accepting them as Engineer members. In order to ensure full compliance with all the provisions of both the National Building Regulations & Building Standards Act [Section 14 (2A)] and National Building Regulations [Clause A19]. These engineers may appoint, train and regularly re-train Inspectors to inspect erected Timber Roof Structures on their behalf.
PAGE 3
Engineer
to:Raise standards in the Nail Plated Timber Roof Truss Industry t h r o u g h the development and supportive enforcement of appropriate technical, quality and ethical standards.Monitor adherence by ITC-SA members of relevant industry related standards, SANS specifications and Codes of Practice and in so doing act as a protector of consumer interests.Foster and promote all ITC-SA members interests through appropriate advertising and publicity by facilitating training and lobbying at all relevant levels and forums.
The Institute for Timber Construction South Africa's - ITC-SA's - mission is
The ITC-SA Engineering Systems who are members of the ITC-SA, namely Alpine Automation South Africa (Pty) Ltd, International Truss Systems (Pty) Ltd, MiTek Industries S.A. (Pty) Ltd, and © 2009 Multinail Africa (Pty) Ltd, have all developed computer software capable of designing timber roof structures in compliance with the relevant design codes of practise. The Systems ensure competent use of their design software through training of their licensed Fabricators. The Systems also manufacture and supply the connector nail-plates and other necessary brackets and hardware upon which the software design criteria is based.
PAGE 1
Fabricators/Truss Plants are licensed by the Engineering Systems to design and manufacture pre-fabricated, mono-planar nail-plated roof structures. They are audited by the ITC-SA on an annual basis to ensure compliance with ITC-SA requirements and the National Building Regulations and to achieve a Certificate of Compliance for Truss Manufacture.
To further assist in developing the standards within the industry, ITC-SA presents a duel level estimator/designer course which upgrades the quality and competency of personnel in truss plants.
ITC-SA approves Erectors who have undergone work evaluations and training in order to achieve a Certificate of Competence for Erectors. Of particular relevance is their understanding and correct application of the bracing rules as contained in the Roof Erector's Handbooks Volumes 1 & 2, which are continuously re-evaluated and updated through ITC-SA facilitation. These bracing details have been included in SANS10243 (The Manufacture and Erection of Timber Trusses) and some are also included in SANS 10400 “The Application of the National Building Regulations”- part L.
ITC-SA approved Engineers appoint and train Inspectors to inspect roof structures. The Engineers accept responsibility for the design and structural stability of the roofs after inspection and approval of the roofs by the Inspectors. This process is in compliance with Regulation A19 of the National Building Regulations, which then enables the home owner to obtain an occupancy certificate from the local authority.
PAGE 4
Inspector
Fabricator
Erector
PAGE 5
INDEXPART # DESCRIPTION PAGE #
Part One Connection Details 6 - 40
Part Two Bracing Details 41 - 74
Part Three Inspection Checklist 75 - 76
Part Four Standard Remedials 77 - 84
Part Five Glossary of Terms 85 - 87
Glossary1 88
Typical Corbeling Detail 89
Geyser Platform Parallel & Perpendicular 90 - 91
Solar Panel Detail 92
Part Six Notes & Membership Application 93 - 94
PAGE 1
That all the details
contained in this manual
are “deemed-to-satisfy”
details and that they
may be superseded by
any alternative detail
issued by a competent
a n d e x p e r i e n c e d ,
r e g i s t e r e d t i m b e r
Engineer or by any
details issued to the site
for the particular project.
Please note:
ERECTION TOLERANCES
PURLIN CONNECTIONS & SPLICES
HEEL SUPPORT CONDITIONS
TRUSS HOLDING DOWN DETAILS
CONNECTION OF MULTIPLE PLY GIRDERS
GIRDER-BATTEN/PURLIN & ANTI-TORSION
VARIOUS HANGERS
VARIOUS MILD STEEL CLEATS
FULL HIPS -45 & 90 DEGREE
TRUNCATED HIPS -45 & 90 DEGREE
DUTCH HIP & PART GABLE HIP
HIP/VALLEY & MONO-PITCH HIP
CORNER HIPS
HIP CONNECTION DETAILS
FLY RAFTER CONNECTIONS
HIP END FASCIA SUPPORT BEAM
BATTEN / PURLINS OVER HIP RAFTER
VALLEY T.C. RESTRAINT DETAILS
VALLEY T.C. RESTRAINT + FRAMES
VALLEY T.C. RESTRAINT DETAILS
VALLEY TRUSS END SUPPORT DETAIL
CRANKED ROOF DETAILS
CRANKED TRUSS SUPPORT DETAILS
GEYSER PLATFORM DETAILS
150L GEYSER SUPPORT ON TRUSSES < 8m
SCISSOR TRUSSES
GABLE LADDER DETAILS
PIGGY BACK DETAILS
PIGGY BACK TRUSS CONNECTION DETAILS
ATTIC TRUSS DETAILS
COMPOSITE ATTIC TRUSS DETAILS
COMPOSITE ATTIC TRUSS DETAILS
OLD ENGLISH & FRENCH DORMER
MODERN ENGLISH & EYEBROW DORMER
ERECT1
PURLIN1
HEEL1
WALLTIE
GIRDER1
GIRDER2
HANGER1
CLEATS1
HIP1
HIP2
HIP3
HIP4
HIP5
HIP6
HIP7
HIP8
HIP9
VALLEY1
VALLEY1A
VALLEY2
VALLEY3
CRANK1
CRANK2
GEYSER1
GEYSER2
GABLE
P-BACK1
P-BACK2
ATTIC1
ATTIC2
ATTIC3
DORMER1
DORMER2
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CONTENTSPart One Connection Details
PAGE 6
PAGE # DETAIL REF. DESCRIPTION
SLIDING SHOE
(Please also refer to pages 12 a,b,c and d)
DETAIL REF.: ERECT 1
ERECTION TOLERANCES
TRUSSES MUST BE ERECTED PLUMB, LEVEL AND ALL CHORDS MUST BE STRAIGHT
PAGE 7
FULL SIZE (SCALE 1:1) SECTION OF 36 X 111 RAFTER AT 30 DEGREE
SLOPE SHOWING MAXIMUM OUT OF PLUMB TOLERANCE ALLOWED
= LESS THAN 3 MM OFF CENTRE.
TOLERANCE IS CRITICAL FOR BOTH A GOOD ROOF LINE AND EFFECTIVE BRACING.
A GUTLINE, PLUMBLINE OR LEVEL SHOULD BE USED.
1. TRUSSES TO BE ERECTED WITH OVERALL BOW IN ITS TOTAL RAFTER LENGTH LESS THAN
L/200 AND LESS THAN 50MM (L = CHORD LENGTH). THE BOW BETWEEN BATTENS OR
PURLINS MUST BE LESS THAN Lp/100 (Lp = BATTEN/PURLIN SPACING).
2. TRUSSES TO BE ERECTED WITH APEX NOT MORE THAN THE LESSER OF SPAN/200 OR
HEIGHT/50 FROM A VERTICAL PLANE THROUGH ITS SUPPORTS.
3. AT ANY SECTION, THE LOCAL OUT OF PLUMB SHOULD NOT EXCEED HEIGHT/50 OR 50MM.
WHICHEVER IS THE LESSER.
GENERALLY, IF A BOW OR TILT IS EVIDENT TO THE EYE, THE TRUSS HAS PROBABLY BEEN
ERECTED OUTSIDE THE TOLERANCES.
REV.: 122-04-2010
Truss
Truss
Pu
rlin
- B
atte
n
DETAIL REF.: PURLIN 1PAGE 8
• •
••
••
•
•
••
HURRICANE CLIP CONNECTION:
ALL HURRICANE CLIPS TO BE FULLY NAILED WITH CLOUT OR SERRATED NAILS
PURLIN
100mm NAILSKEW NAILED
RAFTER
HURRICANE CLIP
•
1 OFF 100mm SKEW DRIVEN NAIL AND TIED WITH 2.4 DIA. GALVANISED WIRE BOUND TWICE AT EACH CONNECTION
WIRE BOUND CONNECTION:
PURLIN
RAFTER
2.4 DIA GALVANISEDWIRE - DOUBLE
100mm NAILSKEW NAILED
•
SWING FIX CLIP CONNECTION:
4mm x 125mm NAIL
PURLIN
RAFTER 2 No. 3.25mm SWINGFIX CLIPS - DOUBLE
1 OFF 4mm x 125mm VERTICAL NAIL & 2 OFF 3.25mm SWING FIX CLIPS FIXED AT EACH CONNECTION.
1 OFF FULLY NAILED HURRICANE CLIP PER CONNECTION. AT ALL OTHER CONNECTIONS HURRICANE CLIPS TO BE STAGGERED.
HURRICANE CLIPS
PLAN VIEW ON PURLINS
2 OFF FULLY NAILED HURRICANE CLIPS PER CONNECTION AT ALL EAVES, OVERHANG PURLINS, RIDGE PURLINS AND GABLE ENDS. (I.E. PERIMETER CONNECTIONS).
NOTE:
1. ALL PURLINS TO BE PLACED ON EDGE AND ERECTED TO THE CENTRES AS SPECIFIED ON THE TRUSS DESIGN.
2. PURLIN SPLICING TO BE STAGGERED. (REFER TO DETAILS BELOW FOR SPLICING OF PURLINS)
3. ONE OR TWO HURRICANE CLIPS PER CONNECTION AS PER PLAN VIEW ABOVE.
4. ALL HURRICANE CLIPS MUST BE FULLY NAILED WITH EITHER CLOUT NAILS OR SERRATED NAILS INTO EACH MEMBER. (I.E. TRUSS AND PURLIN).
VARIOUS 50 x 76 PURLIN CONNECTION OPTIONS
NOTE: IF ALTERNATE DETAILS ARE SUPPLIED BY THE DESIGN ENGINEER, THEY TAKE PREFERENCE TO THE ABOVE
TIMBER BLOCK SPLICE PLAN
PLATED SPLICE ELEVATION
PURLIN SPLICE DETAILS
6 OFF 3.5mm DIA. x 90mm WIRE NAILS
50
mm
50
mm 600 LG
FACTORY OR SITE APPLICATION PLATE TO BOTH SIDES
TO SYSTEM SPEC.
76
mm
PURLINS
WALL PLATE APEX
TR
US
SE
S
EAVES
•••
••
REV.: 223-04-2010
TOP CHORD
BOTTOM CHORD
WEB
DETAIL REF.: HEEL 1PAGE 9
MAX WALL PLATEPOSITION FROMHEEL POINT WITHINSCARF DISTANCE
SCARF DISTANCE
LIMIT OF WALL PLATE POSITIONINGNOTE: ANY SUPPORT OUTSIDE THE SCARF LENGTH IS A SPECIAL SUPPORT CONDITION
SPECIAL SUPPORT CONDITION BEYOND SCARF = CANTILEVER
NOTE: ALL CANTILEVERS MUST BE DESIGNED AS SUCH
TOP CHORD
BOTTOM CHORD
SPECIAL SUPPORT CONDITION ON OVERHANG = TOP CHORD SUPPORT
NOTE: ALL TOP CHORD SUPPORTS MUST BE DESIGNED AS SUCH
TOP CHORD
BOTTOM CHORD
THIS WEB IS THE MAJOR COMPRESSION MEMBER AND CAN SLIDE ALONG THE BOTTOM CHORD WHEN ANGLE OF WEB IS VERY SHALLOW AND CONNECTOR PLATE IS SMALL
REV.: 223-04-2010
MINIMUM PLATE SIZE RECOMMENDED IS 75MM x 150MM
DETAIL REF.: WALLTIE
TRUSS HOLDING DOWN DETAILS
PAGE 10
TILED ROOFS = 4 NO 32mm CLOUT
NAILS INTO TOP AND OPPOSITE SIDE.
SHEETED ROOFS = 8 NO 32mm CLOUT
NAILS INTO TOP AND OPPOSITE SIDE.
HOOP IRON STRAP BUILT INTO
BRICKWORK OR CAST INTO R.C.
BEAM IN ACCORDANCE WITH
SANS 10400 KK 13.3
NOTE: 25mm x 1mm PRE-PUNCHED STRAP MAY BE USED FOR HEAVY TILE
ROOFS OR LIGHT ROOFS UP TO 8m SPAN IN LOW WIND RISK, BUILT UP AREAS.
FOR SHEETED ROOFS AT LESS THAN 17.5 DEGREE PITCH AND/OR
SPANNING MORE THAN 10m THE HOLD DOWN MUST BE DESIGNED.
DETAIL TO BE USED WHEN HOOP IRON
IS FURTHER THAN 200mm FROM TRUSS
HOOP IRON STRAP FIXED TO WALL WITH 5 NO. EVENLY
SPACED MASONRY PINS AND PLASTERED OVER.
VERTICAL SHELF OF SIZE EQUAL TO TRUSS
TOP CHORD SIZE FIXED BETWEEN TRUSSES.
SHELF BETWEEN TRUSSES
MUST BE FIXED WITH ONE 90°
TRUSS HANGER AT EACH END
HOOP IRON WRAPPED
OVER SHELF AND FIXED
WITH 8 NO CLOUT NAILS
ALL FULLY NAILED
REV.: 123-04-2010
( ALTERNATIVELY TILED ROOFS
MAY HAVE 2No 2.4mm DIA. WIRE)
DETAIL REF.: GIRDER 1
ANTI-SPLIT PLATES
CENTER
EQ.EQ.EQ.EQ.
150
150
150
150
300
300
150150150150
CONNECTION DETAILS FOR TWO, THREE AND FOUR PLY GIRDERS
PAGE 11
TWO PLY GIRDER
DOUBLE MEMBER GIRDER TO BE NAILED TOGETHER WITH 100mm NAILS AT 150mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300mm CENTRES ALONG THE CENTRE LINES OF WEBS. BOLT WITH 1 NO. M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND ROOF PLAN)
THREE PLY GIRDER
TW0 TRUSSES TO BE NAILED TOGETHER WITH 100mm NAILS AT 150 mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300 mm CENTRES ALONG THE CENTRE LINES OF WEBS. THIRD MEMBER THEN TO BE SIMILARLY NAILED ONTO DOUBLE TRUSS. BOLT WITH 1 NO. M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND ROOF PLAN)
FOUR PLY GIRDER
TWO TRUSSES TO BE NAILED TOGETHER WITH 100mm NAILS AT 150 mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300 mm CENTRES ALONG THE CENTRE LINES OF WEBS. THIRD AND FOURTH MEMBER THEN TO BE SIMILARLY NAILED TO EITHER SIDE OF DOUBLE TRUSS. BOLT WITH 1 NO.M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND THE ROOF PLAN)
REV.: 223-04-2010
DETAIL REF.: GIRDER 2
TRUSS MUST BUTT FIRMLYAGAINST GIRDER
GIRDER
(1PLY)
(2PLY)
(3PLY)
OR
(4PLY)
TRUSS
PRE-PUNCHED STRAP TO BE PULLED TIGHT WHEN FIXING CLOUT NAILS
15 CLOUT NAILS INTO GIRDER
15 CLOUT NAILS INTO TRUSS
1. FOR BATTENS SPACED AT LESS THAN400mm c/c CONNECT EVERY 2ND BATTEN TO GIRDER WITH A PAIR OF METAL ANGLE CLIPS OR SIMILAR BRACKETS ON OPPOSITE SIDES AS SHOWN. SELECT BATTENS THAT ARE CONTINUOUS OVER BRACED BAYS.
2. WHERE NO CLIPS CAN BE USED DUE TO TILE UNDERLAY / DAMP PROOFING LAYER USE 38x76 (GRADE5) RUNNERS AT 600mm CENTERS NAILED TO EACH PLY TO UNDERSIDE OF TOP CHORD AND OVER TWO ADJACENT TRUSSES. TWO 7 5 m m W I R E N A I L S P E R CONNECTION. (I.E. FOUR PLY = EIGHT NAILS - TWO NAILS INTO EACH PLY)
GIR
DE
R TRUSS
BATTEN/PURLIN CONNECTION DETAIL FOR THREE AND FOUR PLY GIRDERS
TORSIONAL RESTRAINT STRAP DETAIL TO BE INSTALLED WHEN THE INCOMING TRUSS SPAN
IS 6.0m OR GREATER ON ALL VALLEY GIRDERS IRRESPECTIVE OF THE NUMBER OF PLIES
PAGE 12
GENERAL VIEW
NB: NAIL BATTEN / PURLININTO EVERY PLY OF GIRDER
3. FOR PURLINS (USUALLY SPACED AT MORE THAN 800mm c/c) CONNECT EACH PURLIN WITH FOUR HURRICANE CLIPS PER CONNECTION.
REV.: 212-05-2010
HANGER/CLEAT BOLTED THROUGH ALL PLIES OF GIRDER
PAGE 12 aREV.: 0
15-12-2010
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VALLEY - (ALTERNATIVE)CONCRETE TILE OPTION
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VALLEY - METAL SHEETING OPTIONREV.: 0
15-12-2010
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NA
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E)
VALLEY - (ALTERNATIVE)METAL SHEETING OPTIONREV.: 0
15-12-2010
DETAIL REF.: HANGER 1
TYPICAL 90 DEGREE TRUSS HANGERS
90 DEGREE MINI-HANGERS FOR LIGHT LOADS
TYPICAL 90 DEGREE 50/80mm WIDE HANGERS
45 DEGREE TRUSS HANGERS
IMPORTANT:
INSTALL ALL
HANGERS
STRICTLY
ACCORDING
TO THE
MANUFACTURER’S
SPECIFICATIONS
THE HANGER
TYPE AND SIZE
FOR EACH
TRUSS
CONNECTION
MUST BE
SHOWN
ON THE
ROOF
LAYOUT PLAN
PAGE 13
USE:M12 BOLTS + WASHERS& / OR 2.8 mm x 32 mm CLOUT NAILS IN EVERY HOLE.
USE:M12 BOLTS + WASHERS & / OR 2.8 mm x 32 mm CLOUT NAILS IN AS M A N Y H O L E S A S POSSIBLE.
REV.: 223-04-2010
36X36 X4MMSQUARE WASHER
BOLTEDOPTION
LEFT HANDTRUSS HANGER
FULLY NAILEDOPTION
RIGHT HANDTRUSS HANGER
DETAIL REF.: CLEATS 1
VARIOUS MILD STEEL CLEATS (TYPICAL VALUES CHECK WITH MANUFACTURER)
PAGE 14
(TYPICAL APPLICATION – PLY OF INCOMING TRUSSES MAY VARY.)
FLANGE FOR FIXING INCOMING TRUSS (FLANGE LENGTH MAY VARY)
12.2KN CLEAT
CLEATS FOR 90 DEGREEINCOMING TRUSSES
(6.8KN CLEAT) (20.3KN CLEAT) (25.7KN CLEAT)
CLEATS FOR 45 DEGREE INCOMING HIP GIRDERS
ALL HOLES IN THE CLEATSHOULD BE BOLTED.
GENERAL RULE:
GIRDER TRUSSBOTTOM CHORD
M12 BOLTS& WASHERS
CLEATSECTION X-X
PLAN VIEW
INCOMING TRUSSx
x
REV.: 001-07-2001
DETAIL REF.: HIP 1
90 DEGREE INFILL HIP
45 DEGREE INFILL HIP
PAGE 15
ISOMETRIC VIEW PLAN VIEW
ISOMETRIC VIEW PLAN VIEW
REV.: 112-05-2010
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
DETAIL REF.: HIP 2
90 DEGREE INFILL TRUNCATED HIP
45 DEGREE INFILL TRUNCATED HIP
PAGE 16
ISOMETRIC VIEW PLAN VIEW
ISOMETRIC VIEW PLAN VIEW
REV.: 112-05-2010
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
DETAIL REF.: HIP 3
PART GABLE HIP
DUTCH OR LOUVRE HIP
PAGE 17
ISOMETRIC VIEW PLAN VIEW
ISOMETRIC VIEW PLAN VIEW
REV.: 113-05-2010
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
DETAIL REF.: HIP 4
45 DEGREE INFILL MONO-PITCH HIP
HIP AND VALLEY COMBINATION
PAGE 18
VALLEY BRACING NOT SHOWN FOR CLARITY SEE DETAILS VALLEY 1/2/3 - PAGE 24/25/26
ISOMETRIC VIEW PLAN VIEW
ISOMETRIC VIEW
PLAN VIEW
REV.: 113-05-2010
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
DETAIL REF.: HIP 5
45 DEGREE INFILL TRUNCATED CORNER HIP
90 DEGREE INFILL TRUNCATED CORNER HIP
PAGE 19
ISOMETRIC VIEW PLAN VIEW
ISOMETRIC VIEW PLAN VIEW
REV.: 213-05-2010
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM
DETAIL REF.: HIP 6
TRUNCATED HIP CONNECTION DETAILS (ALSO APPLIED TO OTHER HIP TYPES)
PAGE 20
ROOF PLAN
DETAIL X SECTION Y-Y
NB:
T H E R E Q U I R E D
HANGER OR CLEAT
TYPE FOR EACH
CONNECTION MUST
ALWAYS BE SHOWN
ON THE ROOF PLAN
SEE DETAILS ON NEXT PAGE
PU
NC
HE
D S
TR
AP
TO
BE
AT
30
0m
m c
/c A
LO
NG
VE
RT
ICA
L
TO
WA
RD
S
TH
E
AP
EX
BOLT +
WASHER
STRAPPING TO BE PULLED TIGHT AND THEN FULLY NAILED, TO BE IMPLEMENTED FOR SHEETED ROOFS ONLY
REV.: 213-05-2010
DETAIL REF.: HIP 7
HURRICANE CLIP CONNECTION OF FLY RAFTER & TRUNCATED TRUSS
PRE-PUNCHED STRAP CONNECTION OF FLY RAFTER & TRUNCATED TRUSSO R S I N G L E P L Y G I R D E R S
PRE-PUNCHED STRAP CONNECTION OF FLY RAFTER & TRUNCATED 2 PLY GIRDERS
PRE-PUNCHED STRAP CONNECTIONOF FLY RAFTER & TRUNCATEDT H R E E & F O U R P LY G I R D E R S
PRE-PUNCHED STRAP CONNECTION OFBUTT RAFTER AND TRUNCATED THREE AND FOUR PLY GIRDERS. (TOP CHORDS AT THE SAME LEVEL)
PRE-PUNCHED STRAP CONNECTION OFJACK TOP CHORD & HIP GIRDERS WHERE HORIZONTAL HOLDING IS NEEDED (CANTILEVER HIP ENDS)
TOP CHORD CONNECTION DETAILS FOR VARIOUS SITUATIONS
PAGE 21
1 NO. HURRICANE CLIP FULLY NAILED WITH CLOUT NAILS
NOTE:TRUSS RAFTERS TO FIT TIGHTLY AGAINST EACH OTHER
4 NO. CLOUT NAILS
NOTE:TRUSS RAFTERS TO FIT TIGHTLY AGAINST EACH OTHER
6 NO. CLOUT NAILS
1.2mmx25mm PRE-PUNCHED STRAP 500MM LONG PRE-PUNCHED STRAP LENGTH TO SUIT (+1.2 TO 1.8m)
NOTE:T R U S S RAFTERS TO FIT TIGHTLY A G A I N S T EACH OTHER
PRE-PUNCHED STRAP LENGTH TO SUIT
(± 1.2 TO 1.8 m)PRE-PUNCHED STRAP – 500mm LONG FIX TO JACK TRUSS, OVER HIP GIRDER AND NAILED TO SIDE OF TOP CHORD OF HIP GIRDERS.
NOTE:TRUSS RAFTERS TO FIT TIGHTLY AGAINST EACH OTHER
6 NO.
CLOUT
N A I L S
REV.: 213-05-2010
DETAIL REF.: HIP 8
FASCIA BEAM DETAIL TO SUPPORT OVERHANG RAFTERS
WHEN OVERHANG EXCEEDS TRUSS SPACING
PAGE 22
SPECIAL NOTE:
3 T ILE OVERHANG USE
38x152mm FASCIA BEAM WITH
SINGLE BRACING STRAP.
4 T ILE OVERHANG USE
38x228mm FASCIA BEAM WITH
DOUBLE BRACING STRAP.
USE PUNCHED STRAP AS SHOWN USING 10 NAILS INTO THE HIP GIRDER RAFTER AND 10 NAILS INTO EACH FASCIA BEAM
REV.: 113-05-2010
DETAIL REF.: HIP 9
CONNECTION OF BATTEN OR PURLIN TO SINGLE PLY HIP GIRDERS OR RAFTERS.
PAGE 23
BATTEN OR PURLIN
HIP GIRDER / RAFTER
JUTS OUT ABOVE TOP
CHORD LEVEL OF THE
O T H E R T R U S S E S
HIP GIRDER / RAFTER AND
TRUSS TOP CHORDS AT
T H E S A M E L E V E L
38X38 BEARER NAILED
TO TRUSS WITH 75mm
N A I L S AT 2 0 0 c / c
SECTION ON HIP TRUSS
ALTERNATIVE FIXING METHOD
75mm WIRE NAILS
OR
JACK TRUSSES
BATTENS OR PURLINS
HIP TRUSS
HIP GIRDER OR RAFTER
BATTEN OR PURLIN MITRE CUT TO TIGHT
FIT ON TOP OF RAFTER AND SKEW NAILED
REV.: 001-07-2001
TILED ROOFS UP TO 9.0 MET R SPAN
CONCRETE, ASBESTOS, METAL, CLAY OR SLATE
FIX 38 x 38 RUNNERS BETWEEN VALLEY TRUSSES
TO UNDERSIDE OF RAFTER WITH 2 No. 3.5mm DIA. X
75mm NAIL AT EACH CONNECTION, TO EXTEND
UP TO AT LEAST ONE FULL TRUSS SPACING PAST
VALLEY LINE. (2ND FULL TRUSS PAST VALLEY LINE)
E
DETAIL REF.: VALLEY 1
INTERMEDIATE VALLEY RUNNERS FOR TILES AND SHEETING
PAGE 24
SHEETED ROOFS
WHEN VALLEY TRUSS c/c IS GREATER THAN PURLIN
CENTERS INSTALL 38 X 76 (GRADE5) RUNNERS
AS PER TILED ROOFS. FIX VALLEY TRUSSES TO
RAFTERS WITH 2 NO. HURRICANE CLIP AT EACH
CONNECTION FULLY NAILED WITH 32mm CLOUT
NAILS.
N.B.
38 X 76 (GRADE5) WEB STIFFENERS
REQUIRED ON ALL VALLEY WEBS THAT
EXCEED 1800mm REFER WEB BRACING
DETAILS
1 NO. 3.5 DIA. X 75mm NAILS
PER 38 X 38 RUNNER
2 NO. 3.5 DIA. X 75mm NAILS
PER 38 X 76 RUNNER
VALLEY RUNNER SP ICEL
PLAN VIEW
REV.: 113-05-20101
ALTERNATIVE:
FIX ONE STIFFENER FRAME SET
TO BOTH SIDES OF THE VALLEY
NB PHYSICAL ACCESS THROUGH VALLEY AREA IS DIFFICULT. ACCESS CAN BE MADE EASIER IF THE VALLEY RUNNERS ARE PLACED UNDERNEATH THE VALLEY TRUSSES
ALTERNATIVE:
FIX ONE STIFFENER FRAME SET
TO BOTH SIDES OF THE VALLEY
DETAIL REF.:VALLEY3
VALLEY RUNNERS FOR TILED ROOFS OVER 9.0m SPAN WHERE THE STIFFENER FRAME IS WITHIN THE VALLEY LINES
PLAN VIEW
VALLE
Y TR
US
SE
S
TRUSS HANGERS
VT1
VT2
VT3
GIRDER TRUSSTRUSS
RID
GE
VALLEY RUNNERS
2 NO.3.5 DIA.X 75mm NAILS
PER 38 X 76 RUNNER
RAFTER
VALLEY RUNNER SPLICE
TRUSS
VALLEY TRUSSES
GIRDER TRUSS
WALLPLATE
TRUSSES
WALLPLATE
VALLEY
RUNNERS
(SEE NOTES)
VALLEY TRUSS
ONE100mmSKEW NAILNAILED TOTOP CHORD
ALTERNATIVE:200mm LONG BLOCK
FIXED WITH TWO75mm WIRE NAILSTO TRUSS BELOW
PURLIN
TOP CHORD OF TRUSS BELOW
CONTINUOUSBATTEN OR
VALLE
Y R
UN
NE
RS
STIFFENER
FRAME
STIFFENER
FRAME ANDSUPPORT
BATTEN
VALLEY RUNNER
SPACING
STIFFENERFRAME
DETAIL REF.: VALLEY 1APAGE 25
TILED ROOFS OVER 9.0m SPAN
WHEN THE STIFFENER FRAME LIES WITHIN THE VALLEY LINES, 38 x 76 RUNNERS MUST BE FIXED UNDERNEATH T H E VA L L E Y T R U S S E S T O T H E UNDERSIDE OF RAFTER WITH 2No. 3.5mm DIA x 75mm NAILS AT EACH CONNECTION.
THE RUNNERS MUST EXTEND AT LEAST TWO FULL TRUSS SPACINGS PAST THE VALLEY LINE.
RUNNERS ARE PLACED UNDER THE VALLEY TRUSSES TO MAKE IT POSSIBLE TO GAIN ACCESS TO THE ROOF SPACE BEYOND THE VALLEY AND GIRDER.
N. B.38 X 76 (GRADE5) WEB STIFFENERS REQUIRED ON ALL VALLEY WEBS THAT EXCEED 1800mm REFER WEB BRACING DETAILS
REV.: 213-05-2010
DETAIL REF.: VALLEY 2
TOP CHORD BRACING OF TRUSSES UNDER VALLEY
PAGE 26
TILED ROOFS
FOR HEAVY TILED ROOFS WHERE WIND UPLIFT WILL NOT
OCCUR, THE HURRICANE CLIP CONNECTION OF THE
VALLEY TRUSS IS NOT REQUIRED.
SHEETED ROOFS
WHEN VALLEY TRUSS c/c IS GREATER THAN PURLIN CENTRES
INSTALL ADDITIONAL 38X76 (GRADE5) RUNNERS MIDWAY
BETWEEN VALLEY TRUSSES AND PROVIDE ADDITIONAL
BRACING MEMBER ACCORDINGLY.
2 No. HURRICANE CLIPS AT EACH CONNECTION FULLY NAILED
WITH 32mm CLOUT NAILS.
PLAN VIEW
38x114 (GRADE5) GIRDER RAFTER BRACE
REQUIRED WHERE NO RAFTER BRACING IS
INSTALLED FOR GIRDER. FIX TO EACH TRUSS
WITH 3 NO. 76mm NAILS AND FIX TO GIRDER
WITH PRE-PUNCHED STRAP WRAPPED ROUND
AND FIXED WITH 3 CLOUT NAILS EACH END.
IF BRACE IS LONGER THAN 1800mm FIX 38x76
(GRADE5) T-BRACE.
VA
LL
EY
TR
US
SE
S
38 X 76 (GRADE5) RAFTER BRACING
FIXED TO TOP OP RAFTERS SEE
DETAILS BELOW
TRUSSESVALLEY TRUSSES
38 X 76 TIMBER BEARER
WALLPLATE
WALLPLATE
TRUSS
GIRDER TRUSS
EACH CONNECTION 3 No.
3.5mm DIA. X 75mm
WIRE NAILS
RAFTER
VALLEY TRUSS
38 X 76 BEARER
38 X 76 (GRADE5) BRACINGMEMBER FIXED TO TOP SIDE OF RAFTER AS CLOSE AS POSSIBLETO BEARER
VALLEY TRUSS
TRUSS RAFTER
2 NO HURRICANE CLIPS
FOR SHEETED ROOF
38 X76 (GRADE5) CONTINUOUS BEARER OR 200mm BLOCKSFIXED WITH 2 No. 76mm NAILS TO RAFTER. VALLEY TRUSSSKEW NAILED TO TRUSS AT EACH TRUSS CONNECTION
REV.: 213-05-2010
PAGE 27
This
page
Inte
ntiona
lly
left
blank
DETAIL REF.: CRANK 1
GIRDER TOP CHORD RESTRAINT FOR VALLEY SIDE OF CRANKED ROOF
PAGE 28
NOTE:RUNNER FIXED TO UNDERSIDE OF RAFTERS WITH 2 No. X 75mm WIRE NAILS OR PUNCHED STRAP AND TO EXTEND OVER A MIN. OF 3 No. TRUSSES, AS SHOWN
RUNNER CENTRESLIGHT ROOF COVERING = 1200 MAX.HEAVY ROOF COVERING = 600 MAX.
PRE-PUNCHED STRAP TOBE FIXED TO RUNNERS & AROUND TOP CHORD OF GIRDER WITH 6 NO. CLOUT NAILS EACH END
SECTION A-A(TOP CHORD OF GIRDER SAME DEPTH AS TOP CHORD OF TRUSS)
SECTION A-A(TOP CHORD OF GIRDER DEEPER THAN TOP CHORD OF TRUSS)
38 X 76 (GRADE5) RUNNERS TO U/S OF TOP CHORD AT MAX. CENTERS AS NOTED BELOW
38 X 76 (GRADE5) RUNNERS
38 X 76 (GRADE5) RUNNERS ON U/S OF TOP CHORD
38 X 76 (GRADE5) RUNNERS ON U/S OF TOP CHORD
38 X 76 (GRADE5) RUNNERS
WHEN RAFTER OF GIRDER IS DEEPER THAN THAT OF
ADJACENT TRUSSES
REV.: 113-05-2010
THIS AREA MUST HAVE
A FULL BRACING SYSTEM
THIS AREA MUST HAVE
A FULL BRACING SYSTEM
THIS DETAIL MUST BE LINKED TOA FULLY BRACED AREA ON EACH SIDE OF THE VALLEY GIRDER
DETAIL REF.: CRANK 2
CONNECTION DETAIL FOR INCOMING TRUSSES
TO HIP & VALLEY GIRDER OF CRANKED ROOFS
PAGE 29
TRUSS CONNECTION AT LESS THAN 30 DEGREE INCOMING ONTO GIRDER
REV.: 113-05-2010
MAXIMUM TOTAL LOAD
NO: OFBOLTS
NO: OFPLIES
REACTIONIN (KN)
1
2
1
2
1
1
2
2
1.7
3.4
3.4
6.8
This
page
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blank
PAGE 30
L AY O U T P L A N G E Y S E R
PERPENDICULAR TO TRUSSES
DETAIL REF.: GEYSER 2
GEYSER SUPPORT DECK FOR GEYSERS UP
TO 150 LITRES SUPPORTED ON TRUSSES
PAGE 31
ONE ADDITIONAL BOTTOM CHORDS OF THE SAME
SIZE AND GRADE NAILED ON WITH 75mm WIRE NAILS
AT 150mm STAGGERED CENTRES.
150mm OVERLAP PAST THE TRUSS NODE AT EACH END.
LAYOUT PLAN GEYSER
PARALLEL TO TRUSSES
ONE ADDITIONAL BOTTOM CHORD OF THE
SAME SIZE AND GRADE NAILED ON WITH 75mm
WIRE NAILS AT 150mm STAGGERED CENTRES.
150mm OVERLAP PAST THE TRUSS NODE AT
EACH END.
ONE ADDITIONAL
BOTTOM CHORD
P E R T R U S S
ONE ADDITIONAL BOTTOM
C H O R D P E R T R U S S
L
L
REV.: 113-05-2010
DETAIL REF.: SLIDING SHOE
SLIDING SHOE DETAILS FOR SCISSOR TRUSSES WITH EXCESSIVE
HORIZONTAL DISPLACEMENT (MITEK SA, ITS AND ALPINE DETAILS)
PAGE 32
38 X 114 (GRADE5) X 250 LONG TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALLPLATE WITH A MINIMUM OF 6 X 75mm WIRE NAILS
ALPINE GLIDE SHOE
MITEK SLIDING SHOE TRI-FIX GLIDE SHOE
STRAP TO BE TWISTED AND LOCATED APPROX. VERTICALLY AS SHOWN TO A C C O M M O D AT E OUTWARD MOVEMENT.
HOLDING DOWN STRAP FIXED IN ACCORDANCE WITH STANDARD H O L D I N G D O W N D E TA I L S
SMOOTH STAINLESS S T E E L M E T A L C O M P O N E N T NAILED TO TRUSS WITH 32mm CLOUT NAILS.
COMPONENT WITH TEFLON SLIDING PAD TO BE HAMMERED INTO WALLPLATE.
NOTES:DO NOT BUILD TRUSS INTO BRICKWORK AT SLIDING END. WHERE BRICK BEAMFILL IS INSTALLED PROVIDE M I N I M U M 1 0 m m CLEARANCE ALL ROUND. IT IS RECOMMENDED TO U S E T E M P O R A R Y REMOVABLE PACKING MATERIAL TO ENSURE U N O B S T R U C T E D CLEARANCE.
SLIDING SHOE OCCURS AT ONE END OF THE TRUSS ONLY. OTHER END TO BE NORMALLY FIXED. (HOOP IRON OR OTHER SPECIFIED.)
USE MASONITE OR SIMILAR FULL BEARING PACKS IF NECESSARY FOR TRUSS ALIGNMENT (DO NOT USE WEDGE)
SECTION X – X
TRUSS
SMOOTHCOMPONENT
PADDEDCOMPONENT
WALL PLATE
WALL PLATE
P.T.F.E.(TEFLON)
95X65TRI-NAIL"BASE"
31x127TRI-NAIL "RUNNER"
S T A N D A R D H O L D I N G DOWN DETAIL R E Q U I R E D
VIEW A–A
VIEW A–A
38x114 (GRADE5) x 250 L.g. TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm x 75mm NAILS
REV 30/09/98
WALL PLATE
P. T. F. E.(TEFLON)
31 x 127mmALPINE “RUNNER”
WALL PLATE
S T A N D A R DH O L D I N GDOWN DETAILR E Q U I R E D
95 x 65ALPINE“BASE”
REV.: 113-05-2010
A – A
A – A
NAIL GABLE LADDER TO GABLE TRUSS RAFTER
NAIL GABLE LADDER TO GABLE TRUSS RAFTER
DETAIL REF.: GABLE
GABLE LADDER DETAILS FOR UP TO 600mm OVERHANG
PAGE 33
NOTE:ALL TIMBER TO BE 38 x 114 (GRADE5)
2 No. 100mm WIRE NAILS
2 No. HURRICANE CLIPS
FULLY NAILED
ISOMETRIC VIEW
SECTION
ELEVATION
PLAN
REV.: 125-05-2010
DETAIL REF.: P-BACK 1
PIGGY BACK DETAILS WITH TOP CHORD BEARER SUPPORT
PIGGY BACK DETAILS WITH LAPPED CHORD CONNECTION
PAGE 34
TYPICAL 50x76 BEARERS POSITIONED IMMEDIATELY ABOVE OR CLOSE AS POSSIBLE TO THE TRUSS VERTICALS (*).2 No. 100mm WIRE NAILS P E R C O N N E C T I O N .
(GRADE5)
PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGY BACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS.
TIMBER BEARERS NAILED TO TRUSS WITH 2 No. 100mm WIRE NAILS.
T Y P I C A L 3 8 x 7 6 ( G R A D E 5 ) HORIZONTAL BRACING. 3 No. 75mm NAILS PER CONNECTION.BRACING AT APPROX 45 DEGREES.
RUNNERS AS PER TRUNCATED TRUSS TOP CHORD RESTRAINT REQUIREMENT
T Y P I C A L 3 8 x 7 6 (GRADE5) RUNNERS POSITIONED AS PER TRUNCATED TRUSS T O P C H O R D R E S T R A I N T REQUIREMENT 2 No. 75mm WIRE NAILS PER CONNECTION.
PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGY BACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS. CHORDS TO BE LAPPED & NAILED WITH 75mm WIRE NAILS @ 150mm C/C STAGGERED ALONG THE CHORDS.
NOTE:
ALTERNATIVE CONNECTION:
PIGGY BACK TRUSS TO BE
LAPPED, BOLTED WITH M12
BOLTS @ THE NODES AND
NAILED WITH 75mm WIRE NAILS
@ 150mm c/c STAGGERED
ALONG THE CHORDS
38 x 76 (GRADE5)
RUNNERS
38 x 76 (GRADE5) RUNNER
38 x 76 (GRADE5)
TYPICAL 38x76 (GRADE5) TIMBER RUNNERS NAILEDTO TRUSS WITH75mm EWIRE NAILS.
TYPICAL 38 X 76 HORIZONTAL BRACING. 3 No. 75mmNAILS PER CONNECTION.BRACING AT APPROX 45 DEGREES.
(GRADE5)
TYPICAL 38 x 76 (GRADE5)RUNNERS
PIGGY BACK RUNNERS TO BE SPACED AT TRUSS C/C
TRUSS C/C
REV.: 113-05-2010
SPACED AT TRUSS
SPACING
PIGGY BACK TRUSS
SPACED AT TRUSSSPACING
DETAIL REF.: P-BACK 2
VARIOUS PIGGY BACK TRUSS CONNECTION DETAILS
PAGE 35
CONNECTION OF PIGGY-BACK TO TRUSS TO TRUNCATED TRUSS WITH LAPPED CHORDS NAILED AND BOLTED AT NODE POINTS
CONNECTION OF PIGGY-BACK TRUSS TO TRUNCATED TRUSS WITH PRE-PUNCHED STRAP
PIGGY-BACK CONNECTION DETAIL WITH TIMBER GUSSET – CHORDS DIRECTLY OVER EACH OTHER
75mm WIRE NAILS AT 150mm STAGGERED CENTRES ON LAPPEDCHORDS
TOP CHORD TO BE BRACED E I T H E R W I T H D I A G O N A L BRACING OR BRACING FRAMES
CARE MUST BE T A K E N W H E N S E T T I N G O U T BATTENS (NO NAILS INTO END GRAIN)
ALTERNATIVE:BLOCK OVERWITH 38x76 (GRADE 5)
38x76 (GRADE5) CONTINUOUS BEARER / RUNNER AT EACH JOINT AND BRACED AT EACH BRACED BAY.
SPAN OF PIGGY-BACK TRUSS
SPAN OF PIGGY-BACK TRUSSDIAGONAL BRACING
BETWEEN
38 x 114 (GRADE5) X 300Lg. GUSSET WITH 4 No. 3.5mm DIA. x 75mm Lg. WIRE NAILS EACH SIDE AT EACH UPPER PANEL POINT
38x76 (GRADE5) CONTINUOUS BEARER / RUNNER AT EACH JOINT AND BRACED AT EACH BRACED BAY.
3 8 x 11 4 ( G R A D E 5 ) X300Lg. GUSSET WITH 4 No. 3.5mm DIA. x 75mm Lg. WIRE NAILS EACH SIDE AT EACH UPPER PANEL POINT
CARE MUST BE T A K E N W H E N S E T T I N G O U T BATTENS (NO NAILS INTO END GRAIN)
ALTERNATIVE:BLOCK OVERWITH 38x76 (GRADE5)
PIGGY-BACK CONNECTION DETAIL WITH TIMBERGUSSET – RUNNER BETWEEN CHORDS
REV.: 013-05-2010
DETAIL REF.: ATTIC 1
ATTIC HEEL DETAIL & BRACING
PAGE 36
PLAN ON ROOF
TYPICAL:INTERSECTION OF PUNCHED STRAP WITH TOP CHORD & TIMBER PACK USE A MIN OF 2 No 3.5mm x 75mm WIRE NAIL PER CONNECTION.
TYPICAL:
38 x 114 (GRADE5) x
200 LONG TIMBER
PACK NAILED TO
TOP CHORD WITH A
MIN OF 3 No 3.5mm
x 75mm WIRE NAILS.
38x152 (GRADE5) SHELFF I X E D B E T W E E N TRUSSES WITH 2 No. H U R R I C A N ECLIPS ON EACH SIDE OFM E M B E R .
38x114 (GRADE5) x 200 L.gL TIMBER BLOCK B U T T I N G A G A I N S T TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm x 75mm NAILS
TYPICAL:38x114 (GRADE5) x 200 L.g. TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm X 75mm NAILS
38x152 (GRADE5) SHELF F I X E D B E T W E E N TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH SIDE OF MEMBER.
REV.: 113-05-2010
NOTE A:STRAP TO BE NAILED TO TRUSS AS SHOWN AT TOP AND BOTTOM OF STRAP.
SEE NOTE A:
DETAIL REF.: ATTIC 2
ATTIC PIGGYBACK BOLTED CONNECTION (2 & 3 PLY TRUSSES)
PAGE 37
NOTE:• NAIL AND BOLT TWO SCABS (ONE EACH FACE)
TO TWO OR THREE PLY ATTIC TRUSS.• SCABS TO MATCH TOP CHORD.• BOLTS TO BE M12.• WASHERS TO BE 36x4mm• NAILS TO BE 100mm WIRE NAILS.• NAILING TO BE ALONG BOTH FACES.
T I M B E R B E A R E R S NAILED TO TRUSS WITH 2 No. 75mm WIRE NAILS.
TYPICAL:38x76 (GRADE5) HORIZONTAL BRACING. MIN 3 No. 75mm NAILS PER CONNECTION.
PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGYBACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS.
TYPICAL BEARERS POSITIONED IMMEDIATELY ABOVE OR CLOSE ASPOSSIBLE TO THE TRUSS VERTICALS 2 No. 75mm WIRE NAILS PER CONNECTION
REV.: 113-05-2010
SPACED AT TRUSSSPACING
SPACED AT
TRUSS SPACING
TYPICALBEARERS
38x76
TIMBERSCABS
TYPICALPIGGY-BACKTRUSS
DETAIL REF.: ATTIC 3
ATTIC PIGGYBACK NAILED CONNECTION (2 & 3 PLY TRUSSES)
PAGE 38
NOTE:• NAIL TWO SCABS (ONE EACH FACE) TO
TWO OR THREE PLY ATTIC TRUSS.• SCAB TO MATCH TOP CHORD.• NAILS TO BE 100mm WIRE NAILS.• NAILING TO BE ALONG BOTH FACES.
TYPICAL BEARERS POSIT IONED IMMEDIATELY ABOVE OR CLOSE AS POSSIBLE TO THE TRUSS VERTICALS 2 No. 75mm WIRE NAILS PER CONNECTION
TIMBER BEARERS NAILED TO TRUSS WITH 2 No 75mm WIRE NAILS.
TRI-STRAP WRAPPED AROUND
TRUSS AND TOP HAT AT EVERY
BEARER FULLY NAILED WITH
32mm CLOUT NAILS.
TYPICAL 38x76 (GRADE5) HORIZONTAL BRACING. MIN 3 No. 75mm NAILS PER CONNECTION.
REV.: 113-05-2010
SPACED AT TRUSSSPACING
SPACED AT
TRUSS SPACING
TYPICALBEARERS
38x76
TIMBERSCABS
TYPICALTOP HAT (PIGGY-BACK)TRUSS
DETAIL REF.: DORMER 1
OLD ENGLISH DORMER – GABLE & HIP
FRENCH DORMER
PAGE 39REV.: 0
01-07-2001
DETAIL REF.: DORMER 2
EYEBROW DORMER
MODERN ENGLISH DORMER
PAGE 40REV.: 0
01-07-2001
Part Two Bracing Details
PAGE 41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
CONTENTSPAGE # DETAIL REF. DESCRIPTION
TCBRACE1
TCBRACE2
TCBRACE3
TCBRACE4
TCBRACE5
TCBRACE6
TCBRACE7
TCBRACE8
TCBRACE9
TCBRACE10
FRAME1
FRAME2
FRAME3
FRAME4
RUNNER1
RUNNER2
RUNNER3
BCBRACE1
WEB1
WEB2
MBRACE1
MBRACE2
MBRACE3
MBRACE4
MBRACE5
MBRACE6
MBRACE7
MRUNNER1
MRUNNER2
MRUNNER3
MRUNNER4
MRUNNER5
MRUNNER6
MBRACE8
MBRACE9
MBRACE10
MBRACE11
MBRACE12
T. C. bracing-tiles-<6.6m span
Stub /cantilever heels-tiles-<6.6m
T. C. stability bracing-tiles->6.6m
T. C. stability bracing-tiles->9. 0m
Stub /cantilever heels-tiles->6.6m
Dutch hip top chord bracing
T. C. stiffener-tiles->9. 0m
T. C. stiffener-tiles->9. 0m
Top chord bracing-sheeting-15.0m span
Stub & cantilever heels-sheeting
Bracing/stiffener frame connections
Bracing/stiffener frame splices
Bracing/stiffener frame standard heel details
Bracing/stiffener frame stub heel details
General runner requirements
Runner girder connection & splices
Runner girder connection
Bottom chord runners & bracing
Web runners & bracing
Web "T'-bracing
Top chord metal brace - general
Top chord metal brace batten/purlin
Top chord metal brace heels
Top chord metal brace heels
Top chord metal brace dutch hip
Bottom chord metal brace details
Web metal brace details
Bottom chord metal runner details
Web metal runner details
Bottom chord metal runner & brace
Web metal runner & metal brace
Metal runner special detail
Metal runner special detail
Top chord metal brace battens
Top chord metal brace purlins
Top chord metal brace dutch hip
Bottom chord metal brace details
Web metal brace details
DETAIL REF.: TCBRACE 1
ISOMETRIC VIEW
APEX DETAIL
HEEL DETAIL
ISOMETRIC VIEW
BLOCK SPLICE DETAIL AND
HEEL DETAILSIDE VIEW
HEEL DETAIL
PLAN VIEW
STABILITY BRACING & TOP CHORD STIFFENER – TILED ROOFS TRUSS SPANS UP TO 6.6m - MAXIMUM SPACING - 14.3m
PAGE 42
N.B.: SPLICE (WHEN NECESSARY) TO OCCUR IN UPPER HALF OF BRACE (i.e. CLOSER TO APEX)
FIX TOP CHORD BRACE TO WALL PLATE WITH THREE 100mm WIRE NAILS
RULES:FOR TRUSSES UP TO 6.6m SPAN– BATTENED ROOFS REQUIRED EVERY 14.3m OR LESS ON TRUSS RUNS WITH THE SAME SPAN.(16½ - ¹/3SPAN) = 14.3m
38x76 (GRADE 5)DIAGONAL TOP CHORD BRACING
BLOCK SPLICEIF REQUIRED
DIAGONAL BRACE TO TRUSS CONNECTION
200mm BLOCK SIX WIRE NAILS 2 No. 75mm
WIRE NAILS
38x76 (GRADE 5) DIAGONAL TOP CHORD BRACING
TIMBER BLOCK SIX 75mm NAILS
WALL PLATEFIX TOP CHORD BRACE TO WALL PLATE WITH THREE 100mm NAILS
REV.: 226-05-2010
BRACE TO TRUSS CONNECTION
DETAIL REF.: TCBRACE 2
CANTILEVER WALL DETAILS OF STABILITY BRACING – TILED ROOFS FORTRUSS ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS 6.6m & LESS
STUB WALL DETAIL OF STABILITY BRACING – TILED ROOFS FOR TRUSS
ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS 6.6m & LESS
PAGE 43
NOTE:USE THIS DETAIL FOR STABILITY BRACING TOP CHORD STIFFENER FOR TRUSS SPANS OF 6.6m AND LESS
38X76 (GRADE5) D I A G O N A L T O P CHORD BRACING
38X114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)
200mm BLOCKSIX WIRE NAILS
TWO HURRICANE CLIPSAT E A C H E N D O FD I A G O N A L B R A C E
200mm BLOCKSIX WIRE NAILS
38 X 114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)
TWO HURRICANE CLIPS AT EACH END OF DIAGONAL BRACE
FOR CANTILEVERS OVER 1.8mCONTINUE T.C. BRACE TO HEEL
38X114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)
200mm BLOCKSIX WIRE NAILS
TWO HURRICANE CLIPSAT E A C H E N D O FD I A G O N A L B R A C E
38X76 (GRADE5) DIAGONALTOP CHORD BRACING
38X114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)
200mm BLOCKSIX WIRE NAILS
NOTE:USE THIS DETAIL FOR STABILITY BRACING TOP CHORD STIFFENER FOR TRUSS SPANS OF 6.6m AND LESS
REV.: 126-03-2003
DETAIL REF.: TCBRACE 3
STABILITY BRACING AND TOP CHORD STIFFENER – TILED ROOFS – TRUSS SPANS OVER 6.6m UP TO 9.0m MAXIMUM SPACING = (16.5m – (TRUSS SPAN(m) X 0.3) )
PAGE 44
APEX DETAIL
BLOCK SPLICE AND BRACE TO TRUSS CONNECTION
STANDARD-HEEL SHELF BRACING FOR TILED ROOFSSPANS OVER 6.6m UP TO 9.0m
STANDARD-HEEL BRACING CONNECTION WHERE BEAMFILL IS NOT USED. (SPANS OVER 6.6m UP TO 9.0m)
38x114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX
TRUSS RAFTERWEBS
3 NO. 75mmWIRE NAILS
N.B.: SPLICE (WHEN NECESSARY) TO OCCUR IN UPPER HALF OF BRACE (i.e. CLOSER TO APEX)
200 LONG TIMBER BLOCK (TO SUIT WALLPLATE SIZE) TO BUTT AGAINST TRUSS AND NAILED TO WALL PLATE WITH A MIN OF 6 No. 75mm NAILS
38x114 (GRADE5) RAFTER BRACING BOLTED TO U/S OF SHELF WITH 2 No. M12 BOLTS & 36x4 WASHERS BOTH SIDES
38x114 (GRADE5) BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS
38x152 (GRADE5) OR 38x228 (GRADE5) VERTICAL SHELVES FITTED TIGHTLY BETWEEN TWO TRUSSES ON EITHER SIDE OF BRACING SHELF AND NAILED TO WALLPLATE WITH 5 NO. 75mm NAILS
N.B. – IF NO BEAMFILL OCCURS THEN REFER TO DETAIL BELOW
RAFTER BRACING FOR TILED ROOFSSPANS OVER 6.6 UP TO 9.0m
3 8 x 1 1 4 ( G R A D E 5 ) CONTINUOUS BRACING MEMBER WITH BLOCK SPLICE IF NECESSARY, NAILED TO UNDERSIDE OF RAFTERS AT APPROX. 45° SO THAT IT DOES NOT CONFLICT WITH THE WEBS OF THE TRUSSES
APEX DETAIL
BRACING SHELF
SPLICE
BLOCK
38x114 (GRADE5) BLOCK SPLICE
NAILED TO BRACING MEMBER
REV.: 113-05-2010
38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH END OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER. FULLY NAILED WITH 32mm CLOUT NAILS
38X228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.
DETAIL REF.: TCBRACE 4
STABILITY BRACING ONLY OF TOP CHORD – TILED ROOFS ALL TRUSS SPANS OVER 9.0m MAXIMUM SPACING = (16.5m – (TRUSS SPAN(m) X 0.3) )
PAGE 45
APEX DETAIL
STANDARD-HEEL SHELF BRACING FOR TILED ROOFSSPANS OVER 9.0m
STANDARD-HEEL BRACING CONNECTION WHERE BEAMFILL IS NOT USED. (SPANS OVER 9.0m)
38x114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX
TRUSS RAFTERWEBS
3 NO. 75mmWIRE NAILS
38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH END OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER. FULLY NAILED WITH 32mm CLOUT NAILS
200 LONG TIMBER BLOCK (TO SUIT WALLPLATE SIZE) TO BUTT AGAINST TRUSS AND NAILED TO WALL PLATE WITH A MIN OF 6 No. 75mm NAILS
38x114 (GRADE5) RAFTER BRACING BOLTED TO U/S OF SHELF WITH 2 No. M12 BOLTS & 36x4 WASHERS BOTH SIDES
38x114 (GRADE5) BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS 38X228 (GRADE5) SHELF FIXED
BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.
38x152 (GRADE5) OR 38x228 (GRADE5) VERTICAL SHELVES FITTED TIGHTLY BETWEEN TWO TRUSSES ON EITHER SIDE OF BRACING SHELF AND NAILED TO WALLPLATE WITH 5 NO. 75mm NAILS
N.B. – IF NO BEAMFILL OCCURS THEN REFER TO DETAIL BELOW
RAFTER BRACING FOR TILED ROOFSSPANS OVER 9.0m
3 8 x 1 1 4 ( G R A D E 5 ) CONTINUOUS BRACING MEMBER WITH BLOCK SPLICE IF NECESSARY, NAILED TO UNDERSIDE OF RAFTERS AT APPROX. 45° SO THAT IT DOES NOT CONFLICT WITH THE WEBS OF THE TRUSSES
APEX DETAIL
BRACING SHELF
SPLICE
BLOCK
38x114 (GRADE5) BLOCK SPLICE
NAILED TO BRACING MEMBER
BLOCK SPLICE AND BRACE TO TRUSS CONNECTION
N.B.: SPLICE (WHEN NECESSARY) TO OCCUR IN UPPER HALF OF BRACE (i.e. CLOSER TO APEX)
REV.: 113-05-2010
DETAIL REF.: TCBRACE 5
STUB OR CANTILEVER SHELF FOR STABILITY BRACING – TILED ROOFS
TRUSS ENDS BUILT INTO BRICKWORK – TRUSS SPANS OVER 6.6m
PAGE 46
BRICK BEAMFILL (NB: BOTH TOP AND BOTTOM CHORD NIBS MUST BE SECURELY BUILT INTO THE BRICKWORK)
38x114 (GRADE5) RAFTER B R A C I N G M E M B E R BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS & 36X4mm WASHERS BOTH SIDES
38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF SHELF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.
38X114 (GRADE5) BRACING MEMBERS TO EACH SIDE OF SHELF BAY (FROM RAFTER TO TIEBEAM) C/W ABUTMENT BLOCK – CONNECTION TO RAFTER AND TIEBEAM – USE 2 No. HURRICANE CLIPS FULLY NAILED AT EACH END WITH 32mm CLOUT NAILS.
200 LONG TIMBER BLOCK (TO SUIT WALL PLATE SIZE) TO B U T T A G A I N S T TRUSS AND NAILED TO WALL PLATE WITH 6 NO. 75mm NAILS
N.B. – IF NO BEAMFILL OCCURS THEN REFER TO DETAIL BELOW
STUB OR CANTILEVER SHELF FOR STABILITY BRACING – TILED ROOFS
TRUSS ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS OVER 6.6m
38x114 (GRADE5) RAFTER BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS & 36X4mm WASHERS BOTH SIDES
38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF SHELF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.
REV.: 126-03-2002
DETAIL REF.: TCBRACE 6
TOP CHORD BRACING OF DUTCH HIP (LOUVRE HIP) END TILED ROOFS AND SHEETED ROOFS (OR USE TOP CHORD BRACING FOR SHEETED ROOFS IN SIMILAR FASHION TO BRACE THE LOUVRE PART)
PAGE 47
NOTE: FOR TILED ROOFS
FOR TRUSS SPANS OF 6.6m AND LESS THE HIP AND BRACING WILL ACT AS STABILITY AND ANTI-BUCKLE BRACING. THE HIP AND NEXT DIAGONAL TOP CHORD BRACING WILL BE A MAXIMUM OF 5.5m (CENTRE TO CENTRE) APART.
FOR TRUSS SPANS OF GREATER THAN 6.6m THE HIP AND BRACING WILL ACT AS STABILITY BRACING ONLY. THE HIP AND NEXT DIAGONAL TOP CHORD BRACING WILL BE A MAXIMUM OF 9.5m (CENTRE TO CENTRE) APART.
38 X 114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX
3 N0. 3. 5mm DIA. X 75mm WIRE NAILS PER CONNECTION
TRUSS RAFTER WEBS
3 NO. 3.5mm DIA. X 75mm
WIRE NAILS
38X114 (GRADE5) RAFTER BRACINGTO EXTEND PAST GIRDER AND FIRST JACK
DUTCH GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS LESS THAN 1/4 SPAN STANDARD GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS GREATER THAN 1/4 SPAN
REV.: 001-07-2001
PAGE 48
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TOP CHORD BRACING FOR SHEETED ROOFS TRUSS SPANS LESS THAN 15m
DETAIL REF.: TCBRACE 9PAGE 50
PURLINS
TRUSSES
WALL PLATE
BRACING MUST BE FIXED ABOVE WALL PLATE
EACH CONN. 3 No. 75mm NAILS
BRACING MEMBERS TO BE 38x76 (GRADE5) NAILED TO TOP SIDE OF TOP CHORD
PLAN VIEW
APEXDETAIL
TOP CHORDSTANDARDDETAIL – SEE PAGE 51 APEX CONNECTION
DETAIL
RAFTER
38X76 (GRADE5) BRACING MEMBER
3 No. 75mm WIRE NAILS
PURLIN
HURRICANE CLIP
APEX PURLINS 50X76 ON EDGE
PURLINS 50X76 ON EDGE
EAVE PURLIN 50X76 ON EDGE
APEX PURLIN DETAIL
WALLPLATE
CANTILEVER HEEL DETAIL (DIAGONAL BRACES NOT SHOWN FOR CLARITY)TOP CHORD BRACING
38X76 (GRADE5) THREE 75mm WIRE NAILS PER CONNECTION
ISOMETRIC VIEW
NO HEEL DETAIL REQUIRED IF BEAM FILLING IS DONE USE DETAIL TCBRACE10 - PG51 (SHALLOW STUB DETAIL) IF NO BEAM FILLING IS DONE
EAVE PURLIN 50X76 ON EDGE
REV.: 127-05-2010
AT 45 DEGREES
TOP CHORD BRACING FOR SHEETED ROOFS – STUB AND CANTILEVER HEELS – TRUSS SPANS LESS THAN 15m
DETAIL REF.: TCBRACE 10PAGE 51
TIMBER BLOCK RAFTER
PURLIN
EACH CONNECTION 3 No. 75mm WIRE NAILS
38X76 (GRADE5) BRACING MEMBER FIXED TO TOP SIDE OF RAFTER AS CLOSE AS POSSIBLE TO PURLIN AT APPROX. 45°
TIMBER BLOCK
DIAGONAL RAFTER BRACE MUST BE FIXED ABOVE WALLPLATE AS SHOWN
BRACE TO RAFTER C O N N E C T I O N
BRACE TO RAFTER CONNECTION DETAIL
TIMBER BLOCK 200 L O N G ( T O S U I T W A L L P L AT E S I Z E ) NAILED TO WALLPLATE USING 6 No. 75mm NAILS
2 No. 38X76 (GRADE5) BRACING MEMBERS TO FIT TIGHTLY BETWEEN 3 TRUSSES AND FIXED TO RAFTER AND TIEBEAM OF TRUSSES. EACH CONNECTION USE 2 No. HURRICANE CLIPS FULLY NAILED WITH 32mm CLOUT NAILS. (WHERE BEAM INFILL OCCURS AND IS OF A STRUCTURALLY ACCEPTABLE CONSTRUCTION THESE 2 No. BRACING MEMBERS MAY BE OMITTED.)
TYPICAL PURLINC O N N E C T I O N
BRACE TO RAFTER CONNECTION
POINT OF INCOMING RAFTER BRACE
PURLIN
RAFTER
38X114 (GRADE5) BRACING MEMBER
2 NO. HURRICANE CLIPS AT EACH CONN. OF BRACING TO TRUSS, FULLY NAILED WITH 40mm CLOUT NAILS
WALLPLATE
BLOCK 200 LONG (TO SUIT WALL PLATE SIZE) FIXED TO WALLPLATE WITH 6 No. 75mm NAILS. (OMIT IF T R U S S N I B I S S U I TA B LY B U I LT I N T O WA L L )
NOTE: VERTICAL BRACINGS IS NOT REQUIRED IF BRICKWORK BEAMFILL IS BUILT TO THE TOP OF THE TRUSS
HURRICANE CLIP
REV.: 127-05-2010
TOP & BOTTOM SINGLE BAY BRACING FRAME DETAILS
(FRAMES ARE USED ON THE TOP CHORDS ONLY AS STIFFENERS ON TILED ROOFS WITH TRUSS SPANS OVER 9.0m AT SPACINGS AS INDICATED ON THE ROOF PLAN)
DETAIL REF.: FRAME 1PAGE 52
CHORD
CHORDEND VERTICALS
TIM
BE
R B
LO
CK
TYP DETAIL ‘X’
TRUSS
TRUSS
TYP DETAIL ‘Y’
DETAIL ‘X’
SINGLE BAY FRAME DETAILS
BRACING FRAME 38X38 CONTINUOUS BEARER NAILED AT 300c/c WITH 3.5X75mm NAILS
ISOMETRIC VIEW SINGLE BAY / TOP CHORD FRAME ONLY
APEX CONNECTION SEE DETAIL PAGE 53
HEEL CONNECTION SEE DETAILS PAGES 54 AND 55
RAFTER LENGTH
BRACING FRAME TO TRUSS AND BATTEN CONNECTION
SEE R
OO
F PLA
N FO
R IN
TERVA
L
TOPCHORD
BOTTOMCHORD
BRACINGFRAMES
TRUSSES
BATTEN
DETAIL ‘Y’
REV.: 227-05-2010
TYPICAL BOTTOM CHORD BRACING FRAME SPLICE CONNECTIONAT CENTRE OF TRUSS BOTTOM CHORDS – SHEETED ROOFS ONLY
BRACING / STIFFENER FRAME CONNECTION DETAILS AT APEX
DETAIL REF.: FRAME 2PAGE 53
BOLT EDGE DISTANCE
PLAN VIEW OF APEX SPLICETYPICAL SECTION THROGH BRACING FRAMES
ISOMETRIC VIEW OF APEX SPLICE
1.TWO PIECES OF 38X152 (GRADE 5) TIMBER CONNECTED WITH TWO 150X150mm (MINIMUM PLATE SIZE) FACTORY PRESSED NAIL PLATES ON ONE SIDE ONLY
2.MEMBERS BENT TO SUIT TRUSS PITCH
3.CONNECTOR PIECES BOLTED TO THE UNDERSIDE OF THE BRACING FRAMES WITH M12 BOLTS WITH 36X4mm WASHERS EACH SIDE. THREE BOLTS PER FRAME. BOLTS MUST BE POSITIONED TO CLEAR APEX BATTEN. MIN. EDGE DISTANCE OF 25mm.
38X38 BATTEN SUPPORT BATTEN CUT SHORT OF APEX
38X152 (GRADE5) 38X228 (GRADE5) OR SPLICE CONNECTOR AS ABOVE
FRAMES MUST BUTT AGAINST EACH OTHER
CEILING 38X38 BATTEN
B.C. CHORD
TYPICAL SECTION THROUGH BRACING FRAMESPLAN VIEW ON SPLICE
REV.: 231-05-2010
SINGLE BAY PREFABRICATED BRACING / STIFFENER FRAME STANDARD HEEL SUPPORT
DETAIL REF.: FRAME 3PAGE 54
WALLPLATE
PREFABRICATED BRACING FRAME TO BE FIXED TO RAFTER AND TIE BEAM ON 38X38 MEMBERS MEMBERS WITH 75mm WIRE NAILS AT 300mm c/c
38X38 BATTEN TO BE NAILED AT 300 c/c TO RAFTER AND TIE BEAM TO SUPPORT PRE-FABRICATED FRAME
TIMBER BLOCK 38X114 (GRADE5) X 200mm TO BE NAILED TO WALL PLATE WITH 6 X 75mm WIRE NAILS
38X114/152/228 (GRADE5) TIMBER MEMBER(TO SUIT TOP CHORD SIZE) TIGHTLY FITTED BETWEEN TRUSSES AND FIXED WITH TWO FULLY NAILED HURRICANE CLIPS EACH END
NOTE:PROCEDURE OF FIXING TOP CHORD BRACING FRAME TO BE APPLIED WHEN FIXING BOTTOM CHORD BRACING FRAME.
REV.: 231-05-2010
DETAIL REF.: FRAME 4PAGE 55
PREFABRICATED BRACING FRAME TO BE FIXED TO RAFTER AND TIE BEAM ON 38X38 BEARERS WITH 75mm WIRE NAILS AT 300mm c/c
PRE-FRABICATED FRAME TO BE FIXED BETWEEN STUB-END TRUSSES WITH HURRICANE CLIPS.
38 X 114 (GRADE5) BRACING MEMBER (NOT REQUIRED WITH BEAM FILLING) TO EITHER SIDE OF SHELF BAY TO BE FIXED WITH 4 X HURRICANE CLIPS
38 X 38 BATTEN TO BE NAILED AT 300 c/c TO RAFTER AND TIE BEAM TO SUPPORT PRE-FABRICATED BRACING FRAME
TIMBER BLOCK 38 X 114(GRADE5) X 200mm TO BE NAILED TO WALL PLATE WITH 6 X 75mm WIRE NAILS
1.TWO PIECES OF 38X152 (GRADE 5) TIMBER CONNECTED WITH TWO 150X150mm (MINIMUM PLATE SIZE) FACTORY PRESSED NAIL PLATES ON ONE SIDE ONLY
2.MEMBERS BENT TO SUIT TRUSS PITCH
3.CONNECTOR PIECES BOLTED TO THE UNDERSIDE OF BRACING FRAMES WITH M12 BOLTS WITH 4X36mm WASHERS EACH SIDE. THREE BOLTS PER FRAME. BOLTS MUST AVOID APEX BATTEN. MIN. EDGE DISTANCE OF 25mm.
REV.: 231-05-2010
GENERAL RULES FOR BOTTOM CHORD RUNNER/BINDER
AND WEB RUNNER/BINDER REQUIREMENTS
DETAIL REF.: RUNNER 1PAGE 56
CONTINUOUS WEB RUNNERS AS PER TRUSS DESIGN REQUIREMENTS (SEE NOTE 4 BELOW) WEB DIAGONAL BRACING
AT BRACED BAY ONLY
CONTINUOUS BOTTOM CHORD RUNNERS (SEE NOTES BELOW)
BOTTOM CHORD BRACING AT BRACED BAY ONLY
RUNNERS/BINDERS ARE ESSENTIAL IN THE FOLLOWING CASES.
RUNNERS ARE ALSO REFERRED TO AS BINDERS.
1) ON BOTTOM CHORDS OF CANTILEVER TRUSSES OVER CANTILEVER SECTION AND ADJACENT BAY. HERE THE BOTTOM CHORD IS IN COMPRESSION THEREFORE RUNNERS MUST BE AT 1800mm MAX. CENTRES.
2) ON BOTTOM CHORDS OF TRUSSES WITH LIGHT-WEIGHT ROOF COVERING BEFORE PERMANENT CEILINGS ARE INSTALLED DIRECTLY TO UNDERSIDE OF TIE BEAM. THE BOTTOM CHORD IS IN TENSION THEREFORE RUNNERS MUST BE AT 2600mm MAX. CENTRES.
3) ON BOTTOM CHORDS OF ROOFS WITH SUSPENDED CEILINGS OR WITHOUT CEILINGS.THE BOTTOM CHORDS IS IN TENSION THEREFORE RUNNERS MUST BE AT 2600mm MAX. CENTRES.
4) ON TENSION WEBS LONGER THAN 2600mm AND COMPRESSION WEBS LONGER THAN 1800mm U.O.S.
UNLESS OTHERWISE SHOWN:-
1) MAXIMUM SPACING OF RUNNERS FOR 38 MM TIE-BEAM = 2600 mm
2) MAXIMUM SPACING OF RUNNERS FOR 50 MM TIE-BEAM = 3450 mm
REV.: 131-05-2010
CONNECTION OF B.C. RUNNER / BINDER TO GIRDER B.C.
RUNNER / BINDER SPLICING DETAILS
DETAIL REF.: RUNNER 2PAGE 57
38x76 B.C. RUNNER
2 NO. 75mm WIRENAILS
STANDARD TRUSSGIRDER TRUSS
4 NO. 100mm WIRE NAILS
38x76x300 LONG TIMBER BLOCK
MIN. 35mm OVERLAP
MIN. 35mm OVERLAP
TRUSS TIE BEAM OR WEB
600
2 No. 75mm WIRE NAILS (PER RUNNER) AT EVERY CONNECTION
38x76 (GRADE5) RUNNERS
38x76 (GRADE5) RUNNERS
38x76 (GRADE5) 600mm LONG BLOCK SIX 75mm WIRE NAILS EACH SIDE OF JOINT
REV.: 131-05-2010
RUNNER / BINDER JOINING DETAIL FORVARYING BOTTOM CHORD DEPTHS
DETAIL REF.: RUNNER 3PAGE 58
A
A TRUSS BOTTOM CHORD
TRUSS TOP CHORD
TRUSS BOTTOM CHORD
SECTION A-A
PACK
TR
S A
TR
S A
TR
S A
TR
S B
TR
S B
4 x 75mm WIRE NAILS TO BE NAILED TO TOP AND BOTTOM
TRUSS TYPE “B” LONGITUDINAL RUNNER OR BRACE
36mm OR 2 No. 36mm PACK TO SUIT DIFFERENCE IN BOTTOM CHORD DEPTHS
TRUSS TYPE “A”LONGITUDINAL RUNNER OR BRACE
CHORD‘A’
114
114
152
152
228
228
NONE
50x76
50x38
ONE
TRUSS
SPACE
CHORD‘B
PACKSIZE
LENGTHmm
REV.: 231-05-2010
BOTTOM CHORD RUNNER / BINDER AND BRACING DETAILS TILED ROOFS = ALL SPANS; SHEETED ROOFS = MAX 15m SPAN. (RUNNER DETAILS REMAIN WHEN BRACING FRAMES ARE SPECIFIED)
DETAIL REF.: BCBRACE 1PAGE 59
RUNNER SPLICE REFER TO DETAIL BELOW AND DETAILS ON PAGE 57
GENERAL NOTES:TIEBEAM BRACING AND RUNNERS ARE REQUIRED FOR LIGHT WEIGHT ROOFS, TRUSSES WITH SUSPENDED O R N O C E I L I N G S A N D A S TEMPORARY BRACING UNTIL SUCH TIME THAT CEILINGS ARE INSTALLED (IF REQUIRED BY THE ENGINEER)
DETAIL BELOW
MAX. 2600 cc
BR
AC
ED
BAY
TIEBEAM BRACING AND RUNNERS
BOTTOM CHORD RUNNERS MUST BE PLACED AT BOTTOM CHORD NODE POINTS. SHOULD THE DESIGNER REQUIRE INTERMEDIATE RUNNERS THESE WILL BE SHOWN AS ADDITIONAL MEMBERS ON THE DRAWINGS
38 x 76 (GRADE5) BRACING MEMBERS TO BE NAILED TO TOP SIDE OF TIEBEAM OVER THREE OR FOUR TRUSSES AT APPROX. 45 DEGREES. 2 No. 75mm NAILS PER CONNECTION
38 x 76 (GRADE5) CANTILEVER BRACING MEMBER WITH 38 x 76 (GRADE5) TIEBEAM RUNNER AS SPECIFIED BY THE DESIGNER
38 x 76 (GRADE5) TIEBEAM RUNNERS AT MAXIMUM 2600mm OR 1800mm FOR CANTILEVERS OR AT CENTRES AS SPECIFIED BY THE DESIGNER 2 No. 75mm WIRE NAILS PER CONNECTION
TRUSSES
WALLPLATE
18
00
TIEBEAM
DETAIL BELOW
26
00
TIE
BE
AM
PLAN VIEW – STANDARD HEEL PLAN VIEW – CANTILEVER HEEL
TIE RUNNER
TIEBEAM
TIEBEAM BRACING CONNECTION
38x76 (GRADE5) BRACING MEMBER FIXED TOP SIDE OF T I E B E A M A S C L O S E A S POSSIBLE TO TIEBEAM RUNNER
EACH CONNECTION 2No. 75mm WIRE NAILS
TIEBEAM RUNNER SPLICE
2 No. 75mm WIRE NAILS (PER RUNNER)
TIEBEAM
38x76 (GRADE5) RUNNERS
REV.: 131-05-2010
WEB RUNNER / BINDER AND BRACING DETAILS FOR WEBS NEEDINGRESTRAINTS WHERE THREE OR MORE WEBS LINE UP / ARE IN PLANE
DETAIL REF.: WEB 1PAGE 60
38x76 (GRADE5) WEB RUNNERS SEE TRUSS D E S I G N S F O R W E B RUNNER REQUIREMENTS
BR
AC
ED
BAY
38x76 (GRADE5) CROSS BRACING AT MEMBERS ACCESSIBLE FROM ONE SIDE ONLY
38x76 (GRADE5) CROSS BRACING TO BE FIXED TO THREE, FIVE O R S E V E N T R U S S E S AT APPROXIMATELY 45 DEGREES
RUNNER SPLICE
WEB AND RUNNER BRACING
PURLIN OR BATTEN
45°ORLESS
TIEBEAMS
RAFTERS
SINGLE WEB RUNNER
WEB RUNNER AND BRACEON THE SAME SIDE
RAFTERS
TIEBEAMS
2 NO. 3.5mm DIA. x 75mm W I R E N A I L S P E R CONNECTION
38x76 (GRADE5) DIAGONAL BRACING MEMBER NAILED TO WEBS AT EACH BRACED BAY, OR AS INDICATED B Y T H E D E S I G N E R
D I A G O N A L BRACES TO BE AT A P P R O X . 4 5 D E G R E E S . D I S T A N C E B E T W E E N R U N N E R S DIVIDED BY TRUSS SPACING, PLUS O N E E Q U A L S T R U S S E S T O CROSS
PURLIN OR BATTEN
38x76 (GRADE5)WEB RUNNERS
AB
+ 1 = No. X
THIS MEMBER
CAN ALSO BE MOVED
TO DOTTED
LINE POSITION
RAFTERS
TIEBEAMS
B
X X
A
WEB BRACING WHERE TWO RUNNERS OCCUR WEB RUNNER SPLICE
2 NO. 3.5mm DIA. x 75mm WIRE NAILS (PER RUNNER)
38x76 (GRADE5) WEB RUNNERS
WEB
REV.: 131-05-2010
WEB STIFFENER OR T-BRACING ON WEBS AS PER TRUSS DESIGN REQUIREMENTS – USED WHEN LESS THAN THREE WEBS NEEDING LATERAL RESTRAINT LINE UP / ARE IN PLANE
DETAIL REF.: WEB 2PAGE 61
WEB STIFFENERS
WEB STIFFENERS TO BE FULLY NAILED TO ALL PLIES OF MULTIPLE MEMBERS
X
X
3 8 x 7 6 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
WEB
DETAIL T1X-X T2X-X DETAIL
WEBS
DETAIL T3X-X
WEBS
T4
WEBS
DETAILX-X
3 8 x 1 5 2 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
FIRST NAIL AT 50mm F R O M E N D . MAXIMUM END AWAY FROM JOINT = 100mm
REMEDIAL DETAIL WHEN WEBS DO NOT LINE UP – (MAXIMUM 15mm OUT ALLOWED) USE T-BRACE BOTH SIDES
WEBS
3 8 x 1 1 4 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
3 8 x 1 1 4 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
3 8 x 1 5 2 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
3 8 x 1 5 2 ( G R A D E 5 ) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
38x152 (GRADE5) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES
REV.: 131-05-2010
TOP CHORD BRACING WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS
DETAIL REF.: MBRACE 1PAGE 62
No. OF RETURN SECTIONS DETERMINED BY RAFTER LENGTH
BRACED BAY FOR HEEL FIXING DETAILS REFER DETAILS – PAGES 64 & 65
BATTENS (TYPICAL)
WALLPLATE
ANGLE LESS THAN 45° IN ROOF PLANE
TRUSSES (TYPICAL)
RETURN POINT CONNECTION TO BE WITHIN 200mm OF BATTENS. REFER – DETAIL PAGE 63
EACH CONNECTION TO TOP OF RAFTER NAILED AS PER M A N U F A C T U R E R S SPECIFICATION.
WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF SPEEDBRACE
RIDGE LINE
SP
AN
TOP CHORD METAL BRACING LAYOUT FOR TILED ROOFS UP TO 11.5m SPAN BRACING BAY SPACING AS PER DESIGNER – SEE ROOF PLAN
RIDGE LINE
SP
AN
No. OF RETURN SECTIONS DETERMINED BY RAFTER LENGTH
BRACED BAY FOR HEEL FIXING DETAILS REFER DETAILS – SBHA AND SBHB
RETURN POINT CONNECTION TO BE WITHIN 200mm OF PURLIN R E F E R – D E T A I L P G 6 3
WALLPLATE
PURLINS (TYPICAL)
TRUSSES (TYPICAL)
EACH CONNECTION TO TOP OF R A F T E R N A I L E D A S P E R MANUFACTURERS SPECIFICATION
ANGLE LESS THAN 45° IN ROOF PLANE
WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF SPEED BRACE
TOP CHORD METAL BRACING LAYOUT FOR SHEETED ROOFS UP TO 15m SPAN BRACING BAY SPACINGS AS PER DESIGNER – SEE ROOF PLAN
REV.: 131-05-2010
TOP CHORD BRACING WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS
DETAIL REF.: MBRACE 2PAGE 63
75mm OR 100mm NAIL THROUGH BATTEN RAFTER. (NAIL CAN BE DRIVEN THROUGH METAL BRACE)
BATTEN MUST OCCUR ON OR ADJACENT (WITHIN 200mm) TO METAL OVERLAP
NAILS AS PER MANUFACTURERS SPECIFICATION INTO TOP OF RAFTER 3 RINGSHANK NAILS
NAILS AS PER MANUFACTURERS SPECIFICATION INTO SIDE OF RAFTER 4 RINGSHANK NAILS
RAFTER
METAL ANGLE BRACE RAFTER BRACING
RETURN POINT CONNECTION FOR TILED ROOFS
RAFTER
NAILS AS PER MANUFACTURERS SPECIFICATION INTO TOP OF RAFTER 3 RINGSHANK NAILS
PURLIN MUST OCCUR ON OR ADJACENT (WITHIN 200mm) TO M E TA L B R A C E O V E R L A P.
STANDARD PURLIN TO RAFTER C O N N E C T I O N D E T A I L
NAILS AS PER MANUFACTURERS SPECIFICATION INTO SIDE OF RAFTER 4 RINGSHANK NAILS
RETURN POINT CONNECTION FOR SHEETED ROOFS
REV.: 131-05-2010
METAL ANGLE BRACE RAFTER BRACING
PAGE 64
This
page
Inte
ntiona
lly
left
blank
METAL ANGLE BRACE WALL CONNECTION FOR CANTILEVER TRUSSES
METAL ANGLE BRACE WALL CONNECTION FOR STUB-END TRUSSES
HEEL END CONNECTION OF TOP CHORD BRACING WITH ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS
METAL
DETAIL REF.: MBRACE 4PAGE 65
NAILED AS PER MANUSPECIFICATION 3 RINGSHANK NAILS INTO THE TOP, AND 4 RINGSHANK NAILS INTO T HE SIDE
FACTURERS
VERTICAL BRACE IN THE PLANE OF THE SUPPORT STRUT WEB. NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS
WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF METAL BRACE
200mm LONG TIMBER BLOCK (TO MATCH WALL PLATE SIZE) FIXED TO TOP OF WALL PLATE WITH 6 No. 75mm WIRE NAILS
CONTINUE BRACE TO TRUSS HEEL IF CANTILEVER ISGREATER THAN 900mm
NAILED AS PER MANUFACTURERS SPECIFICATION
VERTICAL BRACE NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS
NAILED AS PER MANUFACTURERS SPECIFICATION
200mm LONG TIMBER BLOCK
200mm LONG TIMBER BLOCKFOR HIGHER STUB
TRUSSES EXTEND METAL BRACE FURTHER AS SHOWN HERE
NAILED AS PER MANUFACTURERSSPECIFICATION 3 RINGSHANK NAILS INTO THE TOP, 6 RINGSHANK NAILS INTO THE SIDE
NAILED AS PER MANUFACTURERS SPECIFICATION
NAILED AS PER MANUFACTURERS SPECIFICATION
METAL BRACE (VERTICAL BRACE) TO BE AT A SLOPE LESS THAN 45° TO THE HORIZONTAL
WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF METAL BRACE)
VERTICAL BRACE NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS
200mm LONG TIMBER BLOCK (TO SUIT WALL PLATE SIZE) FIXED TO TOP OF WALL PLATE WITH 6 No. 75mm WIRE NAILS
NAILED AS PER MANUFACTURERS SPECIFICATION
VERTICAL BRACE NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS
REV.: 131-05-2010
TOP CHORD BRACING OF “DUTCH” HIP END WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS
DETAIL REF.: MBRACE 5PAGE 66
EACH CONNEC-T I O N A S P E R MANUFACTURES SPECIFICATION W I D T H O F B R A C E D B AY
DETERMINED BY ANGLE AND LENGTH OF SPEEDBRACE
EACH CONNECTION AS PERMANUFACTURERS SPECIFICATION
ANGLE LESS THAN 45° IN PLANE OF ROOF
BATTEN/PURLIN (TYPICAL)
JAC
K
GIR
DER
F IRST CONNECTION MUST BE AT LEAST TWO B A T T E N / P U R L I N SPACES BELOW HIP TRUSS INTERSECTION
BRACED BAY
DUTCH GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS LESS THAN ¼ SPAN.STANDARD GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS GREATER THAN ¼ SPAN.
REV.: 001-07-2001
BOTTOM CHORD BRACING WITH METAL BRACING FOR TILED ROOFS AND SHEETED ROOFS
ANGLE
DETAIL REF.: MBRACE 6PAGE 67
TRUSSES
TIE
BE
AM
DETAILBELOW
38x76 (GRADE5) RUNNER
RUNNER SPLICE
WALLPLATEN A I L E D A S P E R MANUFACTURERS S P E C I F I C A T I O N 3 RINGSHANK NAILS
S I M I L A R C O N -F I G U R A T I O N ACROSS TRUSSES UP TO OPPOSITE WALLPLATE
PLAN VIEW
WEB
2 NO. 75mm WIRE NAILS (PER RUNNER)
38x76 (GRADE5) TIEBEAM RUNNERS
TIEBEAM RUNNER SPLICE
38x76 (GRADE5) TIEBEAM RUNNER EACH CONNECTION 2 No. 3.5mm 75mm NAILS
N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C A T I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE
METAL BRACE CONNECTION
METAL BRACE
TIEBEAM
METAL BRACE SPLICE
300 OVERLAP
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2 . 5 m m W I R E T I E S T H R O U G H CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
TIEBEAM BRACING WITH METAL BRACE FOR HEAVY TILED ROOFS
TRUSSES
TIE
BE
AM
DETAILBELOW
WALLPLATE
NAILED AS PER MANUFACTURERS SPECIFICATION 3 RINGSHANK NAILS
S I M I L A R C O N -FIGURATION ACROSS T R U S S E S U P T O OPPOSITE WALLPLATE
38x76 (GRADE5) RUNNER REFER TO DETAIL RS FOR RUNNER SPLICE
PLAN VIEW
38x76 (GRADE5) TIEBEAM RUNNERS
TIEBEAM RUNNER SPLICE
2 NO. 75mm WIRE NAILS (PER RUNNER)
WEB
METAL BRACE
38x76 (GRADE5) TIEBEAM RUNNER EACH CONNECTION 2 No. 3.5mm 75mm NAILS
N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C AT I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE
METAL BRACE CONNECTION
TIEBEAM
METAL BRACE SPLICE
300 OVERLAP
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2 . 5 m m W I R E T I E S T H R O U G H CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
TIEBEAM BRACING WITH METAL BRACE FOR LIGHT WEIGHT ROOFS
REV.: 001-07-2001
WEB BRACING WITH LIGHT GUAGE METAL BRACING FOR TILED ROOFS AND SHEETED ROOFS
ANGLE
DETAIL REF.: MBRACE 7PAGE 68
BR
AC
ED
BAY DETAIL WC
METAL BRACE ON WEB
TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH 38x76 (GRADE5) RUNNERS AND BRACING TO STANDARD DETAILS
DETAIL BELOW
DETAIL BELOW
PURLIN OR BATTEN
RAFTERS
38x76 (GRADE5) CONTINUOUS WEB RUNNER
METAL BRACE ON WEB
RUNNER SPLICE
WEB BRACING WITH METAL BRACE – BRACED BAY SPACING AS PER ROOF PLAN
METAL BRACE SPLICE
300 OVERLAP
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2 . 5 m m W I R E T I E S T H R O U G H CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
METAL BRACE TO BE AS CLOSE TO END OF WEB INTERSECTION AS POSSIBLE
NAILED AS PER MANUFACTURES SPECIFICATION 3 RINGSHANK NAILS INTO TOP, 4 RINGSHANK NAILS INTO SIDE
WEB CONNECTION
WEB
38x76 (GRADE5) WEB RUNNERS
2 NO. 75mm WIRE NAILS (PER RUNNER)
WEB RUNNER SPLICEWEB AND RUNNER CONNECTION
NAILED AS PER MANUFACTURERS SPECIFICATION 3 RINGSHANK NAILS
38x76 (GRADE5) RUNNER FIXED WITH 2 No. 75mm WIRE NAILS (CAN BE NAILED THROUGH METAL BRACE)
REV.: 001-07-2001
BOTTOM CHORD RESTRAINTS WITH “M” METAL RUNNERS FOR A MAXIMUM TRUSS SPACING OF 1 200mm
DETAIL REF.: MRUNNER 1PAGE 69
PROFILED METAL RUNNER
DETAIL BELOW2600 MAX
BR
AC
ED
BAY
METAL RUNNER SPLICE
BRACED BAY INTERVAL AS PER ROOF PLAN GENERAL NOTES:T I E B E A M B R A C I N G A N D RUNNERS ARE REQUIRED FOR LIGHT WEIGHT ROOFS, TRUSSES WITH SUSPENDED OR NO CEILINGS AND AS TEMPORARY BRACING UNTIL SUCH TIME THAT CEILINGS ARE INSTALLED.
TIEBEAM BRACING AND RUNNERSTILES – SPANS LESS THAN 11.5m • SHEETING – SPANS LESS THAN 15m
TRUSSES
WALLPLATE
PLAN VIEW – STANDARD HEEL PLAN VIEW – CANTILEVER HEEL
38x76 (GRADE5) BRACING MEMBERS TO BE NAILED TO TOP SIDE OF TIEBEAM OVER THREE OR FOUR TRUSSES AT APPROX 45°. 2 No. 75mm NAILS PER CONNECTION
38x76 (GRADE5) CANTILEVER BRACING MEMBER WITH METAL RUNNER AS SPECIFIED BY DESIGNER
PROFILED METAL RUNNER AT MAXIMUM 2600mm CENTRES AT CENTRES AS SPECIFIED BY THE DESIGNER 2 No. 75mm NAILS PER CONNECTIONT
IEB
EA
M
DETAIL BELOW DETAIL BELOW
TIEBEAM
RUNNER SPLICE
TIEBEAM
PROFILED METAL RUNNER
38x76 (GRADE5) BRACING MEMBER FIXED TOP SIDE OF TIEBEAM AS CLOSE AS POSSIBLE TO TIEBEAM RUNNER
2 No. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A BOTTOM CHORD, BY OVERLAPPING
TIEBEAM
PROFILED METAL RUNNER
EACH CONNECTION 2 No. 3.5mm WIRE NAILS
BRACING CONNECTION
REV.: 102-06-2010
WEB RESTRAINTS WITH PROFILED “M” METAL RUNNERS FOR A MAXIMUM TRUSS SPACING OF 1 200mm
DETAIL REF.: MRUNNER 2PAGE 70
METAL RUNNERS ON WEB AS REQUIRED REFER DETAIL BELOW
BR
AC
ED
BAY
PROFILED METAL RUNNER
RUNNER SPLICE
38x76 (GRADE5) CROSS BRACING TO BE FIXED TO THREE, FIVE OR SEVEN TRUSSES AT APPROX. 45° REFER TO DETAIL BELOW
PROFILED METAL RUNNER & TIMBER BRACING ON WEBS
2 No. 3.5mm DIA. x 75mm WIRE NAILS PER CONNECTION
TIEBEAMS
METAL RUNNER
TIEBEAMS
OR LESS
RAFTERS RAFTERS
PURLIN OR BATTEN PURLIN OR BATTEN
RUNNER & BRACINGOPPOSITE SIDES
RUNNER & BRACINGON THE SAME SIDE
38x76 (GRADE5) BRACING MEMBERS NAILED TO WEBS AT EACH BRACED BAY, OR AS PER THE DESIGNER
WEB
PURLIN OR BATTENRAFTER
WEB
TIEBEAM45°
OR LESS
2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.
STEEL ‘M’ RUNNER
M E TA L R U N N E R (NEAR S IDE OF W E B ) C O N N E C T WITH 2 No. 75mm WIRE NAILS TO WEB OF EACH TRUSS
38x76 (GRADE5) CROSS BRACING (FAR SIDE OF WEB) AT EACH BRACED BAY OR AS INDICATED BY THE DESIGNER. CONNECT WITH 2 No. 75mm WIRE NAILS TO WEBS OF 4 OR 6 TRUSSES AT APPROX. 45°
WEB BRACING WHERE TWO RUNNERS OCCUR RUNNER SPLICE
38 X 76 (GRADE5) CROSS BRACING AT MEMBERS ACCESSIBLE FROM ONE SIDE ONLY, REFER TO DETAIL BELOW
TYPICAL CONNECTION
REV.: 1021-06-2010
TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH 38x76 (GRADE5) R U N N E R S A N D B R A C I N G T O STANDARD DETAILS
BOTTOM CHORD BRACING WITH “M” RUNNERS & SPEEDBRACE” BRACINGFOR TILED AND SHEETED ROOFS – MAXIMUM TRUSS SPACING 1 200mm
DETAIL REF.: MRUNNER 3PAGE 71
3 RINGSHANK NAILS INTO THE TOP
SPLICE DETAIL
METAL RUNNER
SIMILAR CONFIGURATION ACROSS TRUSSES UP TO OPPOSITE WALLPLATE
2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A BOTTOM CHORD, BY OVERLAPPING.
METAL RUNNER
TIEBEAM
RUNNER SPLICE
METAL SPLICE
TYPICAL CONNECTION
TRUSSESWALLPLATE
3 PERM-FIX NAILS INTO THE TOP
DETAILBELOW
45°
45°
TIE
BE
AM
PLAN VIEW
METAL BRACE SPLICE
METAL BRACE
TIEBEAM
N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C A T I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE
M E T A L R U N N E R E A C H CONNECTION 2 No. 75mm NAILS
METAL BRACE CONNECTION
TIEBEAM BRACING WITH METAL BRACING & RUNNERS FOR HEAVY TILED ROOFS
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2.5mm WIRE TIES THROUGH CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
300 OVERLAP
3 RINGSHANK N A I L S I N T O THE TOP
METAL RUNNER
SIMILAR CONFIGURATION ACROSS TRUSSES UP TO OPPOSITE WALLPLATE
TRUSSESWALLPLATE
DETAILBELOW
45°
TIE
BE
AM
PLAN VIEW
2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS S P L I C E O N A B O T TO M CHORD, BY OVERLAPPING.
TIEBEAM
METAL RUNNER
RUNNER SPLICE
METAL RUNNERTYPICAL CONNECTION
N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C A T I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE
M E T A L R U N N E R E A C H CONNECTION 2 No. 75mm NAILS TIEBEAM
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2.5mm WIRE TIES THROUGH CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
METAL BRACE300 OVERLAP
METAL BRACE CONNECTIONMETAL BRACE SPLICE
TIEBEAM BRACING WITH METAL BRACING & RUNNERS FOR LIGHT WEIGHT ROOFS
REV.: 001-07-2001
WEB BRACING WITH “M” RUNNERS & METAL ANGLE BRACING FOR TILED AND SHEETING ROOFS WITH A MAXIMUM TRUSS SPACING OF 1 200mm
DETAIL REF.: MRUNNER 4PAGE 72REV.: 1
02-06-2010
RAFTERS
METAL BRACE ON WEB
METAL RUNNER
RUNNER SPLICE
BRACE BAY SPACING AS PER ROOF PLAN
PURLIN OR BATTEN
DETAILBELOW
BRANDERING
DETAIL BELOW
TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH RUNNERS AND BRACING TO STANDARD DETAILS
DETAIL BELOW
BR
AC
ED
BAY
NAILED AS PER MANUFACTURERS SPECIFICATION 3 R I N G S H A N K NAILS, INTO TOP, 4 RINGSHANK NAILS INTO SIDE
METAL BRACE TO BE AS CLOSE TO END OF WEB INTERSECTION AS POSSIBLE
METAL RUNNERS AND BRACING ON WEBS
TYPICALCONNECTION
METAL BRACE ON WEB METAL RUNNER
METAL BRACE SPLICE
IF REQUIRED, JOIN METAL BRACE USING 3 No. 2.5mm WIRE TIES THROUGH CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS
300mm OVERLAP
WEB CONNECTION
2 NO. 3.5mm DIA. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.
WEB
METAL RUNNER
WEB AND RUNNER CONNECTION RUNNER SPLICE
METAL RUNNER FIXED WITH 2 No. 75mm WIRE NAILS (CAN BE NAILED T H R O U G H M E TA L B R A C E . )
NAILED AS PER MANUFACTURERS SPECIFICATION, 3 RINGSHANK NAILS INTO TOP, 4 RINGSHANK NAILS INTO SIDE
RAFTERS
PURLIN OR BATTEN
BRANDERING
TIEBEAM RUNNER
WEB RESTRAINTS WITH “M” RUNNERS & TIMBER BRACING WHERE THE RUNNER AND BRACING CROSS AWAY FROM THE TRUSS. MAXIMUM TRUSS SPACING OF 1 200mm
DETAIL REF.: MRUNNER 5PAGE 73
BRACING BLOCK WITH THE SAME DEPTH AS THE WEB, CONNECTED WITH 2 No. 75mm WIRE NAILS AT EACH END INTO WEB AND CONNECTED TO METAL RUNNER WITH 10 No. 75mm NAILS. (5 NO ON RIDGE AND 5 NO IN GROOVE AS CONNECTION ABOVE.)
METAL RUNNER WITH TIMBER BRACING CONNECTION WHERE RUNNERS AND BRACING DO NOT INTERSECT ON A TRUSS MEMBER
SEE DETAIL RS
WEB
TYPICAL CONNECTION
38x76 (GRADE5) BRACING MEMBER FIXED TO UNDERSIDE OF WEB WITH 2 NO. 3.5mm DIA. x 75mm WIRE NAILS PER W E B C O N N E C T I O N & B L O C K CONNECTION.
METAL RUNNERMETAL RUNNER
PURLIN OR BATTEN
RAFTERS2 NO. 75mm WIRE NAILS PER CONNECTION.
38x76 (GRADE5) CROSS BRACING MEMBERS NAILED TO WEBS AT EACH BRACED BAY, OR AS INDICATED BY THE DESIGNER
METAL RUNNER
TIEBEAMS
±45°
BRACE FIXING DETAIL
RUNNER SPLICE
METAL RUNNER
WEB
2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.
REV.: 102-06-2010
WEB RESTRAINTS WITH “M” RUNNERS & METAL ANGLE BRACING WHERE THE RUNNER AND BRACING CROSS AWAY FROM THE TRUSS MAXIMUM TRUSS SPACING OF 1 200mm
DETAIL REF.: MRUNNER 6PAGE 74
SEE DETAIL BELOW
METAL RUNNER
METAL RUNNER
WEB
TYPICAL CONNECTION
BRACING BLOCK WITH THE SAME DEPTH AS THE WEB, CONNECTED WITH 2 NO. 75mm WIRE NAILS AT E A C H E N D I N T O W E B A N D CONNECTED TO METAL RUNNER WITH 10 No. 75mm NAILS. (5 No. ON RIDGE AND 5 NO IN GROOVE AS CONNECTED ABOVE.)
METAL RUNNER & BRACING CONNECTION WHERE RUNNERS AND BRACING DO NOT INTERSECT ON A TRUSS MEMBER
METAL RUNNER
NAILED AS PER MANUFACTURERS SPECIFICATION
PURLIN OR BATTEN
RAFTERS
TIEBEAMSDETAIL WB
METAL BRACING NAILED TO TOP CHORDS AT EACH BRACED BAY, OR AS INDICATED BY THE DESIGNER
BRACE FIXING DETAIL
WEB
2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON WEB, BY OVERLAPPING.
METAL RUNNER
RUNNER SPLICE
NAILED AS PER MANUFACTURERS S P E C I F I C AT I O N
REV.: 102-06-2010
Part 3 Site Inspection Checklist
PAGE 75
A: PROJECT INFORMATION1. NHBRC Enrolment Number
2. Site Address
3. Erf
4. Builders Name, NHBRC Reg. No. & Tel. No.
5. Owner's Name & Tel.
6. Fabricator & Tel.
B: GENERAL ITEM CONFORMS T0 DESIGN COMMENTS
1. Loading Information N/A YES NO
2. Truss / Beam to plan N/A YES NO
3. Hangers / cleats to plan N/A YES NO
4. Dimensions to building N/A YES NO
5. Overhang dimensions N/A YES NO
C: STRUCTURAL ITEM CONFORMS TO DESIGN COMMENTS
1. TRUSSES
a. Spacing N/A YES NO
b. Plumbness N/A YES NO
c. Plies as per drawing N/A YES NO
d. Nailing of multiple plies N/A YES NO
e. Internal supports N/A YES NO
f. Holding down detail N/A YES NO
g. Plate positioning N/A YES NO
h. Timber grades N/A YES NO
i. Timber treatment (coast) N/A YES NO
2. GIRDERS
a. Connections N/A YES NO
b. Nailing of connections N/A YES NO
c. Nailing and bolting of
multiple plies N/A YES NO
d. T-bracing (1/2/3/4 ply) N/A YES NO
e. Connection of batten/ N/A YES NO
purlin to each ply
f. Torsional restraint N/A YES NO
g. Truss to girder strapping N/A YES NO
3. SPECIAL TRUSSES
a. Valley support detail N/A YES NO
b. Valley runners N/A YES NO
c. Valley web bracing N/A YES NO
d. Cantilever trusses N/A YES NO
B.C. runners & bracing
PAGE 76
C. STRUCTURAL ITEM CONFORMS TO DESIGN COMMENTS 4. TOP CHORD BRACING
a. Size N/A YES NO
b. Connections (nailing) N/A YES NO
c. Shelf details and fixing N/A YES NO
d. Prefab-frames apex con. N/A YES NO
e. Prefab-frame to truss con. N/A YES NO
f. Prefab-frame vertical N/A YES NO
bracing installed
5. BOTTOM CHORD BRACING
a. Size N/A YES NO
b. Connections N/A YES NO
c. Spacing N/A YES NO
d. Splicing N/A YES NO
e. Cross bracing installed N/A YES NO
f. Prefab-frames installed N/A YES NO
g. Ceilings directly N/A YES NO
attached (heavy roofs)
6. WEB BRACING
a. Size N/A YES NO
b. Connections N/A YES NO
c. Cross bracing N/A YES NO
d. Number per web N/A YES NO
e. T-Bracing N/A YES NO
7. PURLINS / BATTENS
a. Size N/A YES NO
b. Spacing N/A YES NO
c. Splicing N/A YES NO
d. Connections N/A YES NO
e. Holding down details N/A YES NO
8. GENERAL STRUCTURAL DETAILS
a. Holding down details (wall) N/A YES NO
b. Special bracing for hip/ N/A YES NO
valley crank situation
c. Batten / Purlin to 45 deg. N/A YES NO
hip girder connection
d. Special loading condition N/A YES NO
(geysers, etc. )
e. Sliding shoes where specified N/A YES NO
f. Site remedials / repairs N/A YES NO
g. Cantilever hip support N/A YES NO
conditions (eave beam)
h. Piggy back connections N/A YES NO
i. Piggy back bracing (flat part) N/A YES NO
j. Site splicing N/A YES NO
INDEXPart Four Standard Remedials
PAGE 77
Page Detail Ref. Discription
83 Remedial Repair to a broken chords
84 Remedial2 Repair to a broken web
85 Remedial 3 Incorrect cantilevers
86 Remedial 4 Trusses built into internal walls
87 Remedial 5 Truss overhangs too short
87 Remedial 6 Mono-pitch bottom chord extension
88 Remedial 7 Bowed webs
88 Remedial 8 Notching of members
89 Remedial 9 Crank hip/val. girder top chord restraint
DETAIL REF.: REMEDIAL 1PAGE 78
REPAIR TO CRACKED OR BROKEN CHORDS NB: ONLY FOR SINGLE PLY TRUSSES,
ONE BREAK PER TRUSS USE ONLY M12 BOLTS AND MIN. 36X4mm WASHERS
300
MAX. TENSION FORCE = 15.kN
NODE
min.
NTS 9090 NTS 60 60 150 150 60 60DAMAGE
min. ZONE
NODE
36X149 = 5 M12 BOLTS EACH SIDE
75
300 NODE TO NODE 300
36X111 = 4 M12 BOLTS EACH SIDE
MAX. TENSION FORCE = 12.4 kNMAX. TENSION
FORCE = 12.4kN
NAILED WITH 75mm WIRE NAILS AT 150mm STAGGERED CENTRESDAMAGED
ZONEADDITIONAL MEMBER 300mm PAST NODE OR TO END OF TRUSS USE SAME SIZE AND GRADE AS BROKEN TRUSS MEMBER
END
NODE TO NODE
NAIL WITH 75mm WIRE NAILS AT 150mm STAGGERED CENTRES
DAMAGED ZONE
A D D I T I O N A L MEMBER 300mm PAST NODE OR TO END OF TRUSS USE SAME SIZE AND GRADE AS BROKEN TRUSS MEMBER
BOLTARRANGEMENT AS BELOW
BOLTARRANGEMENT AS BELOW
NODENODE
55
56
50
50
50
75
36X225 = 8 M12 BOLTS EACH SIDE
NODE
90NTSmin.150DAMAGE
ZONENODE
90 150NTS 60 60 6060
MAX. TENSION FORCE = 20.kN
60
10
56
0
150 60 60DAMAGEZONE
150606090 NTS 90NTS
REV.: 1 07-06-2010
NB: A REMEDIAL DETAIL PROVIDED BY AN ENGINEER WILL REPLACE THESE DETAILS
DETAIL REF.: REMEDIAL 2PAGE 79
REPAIR TO CRACKED OR BROKEN WEB NB: ONLY ONE REPAIR PER TRUSS; ONLY FOR SINGLE PLY TRUSSES; ONLY FOR 38X76 OR 38X114 SIZE WEBS
DETAIL A
DETAIL B
ONE ADDITIONAL 38X152 (GRADE5) WEB FIXED OVER BROKEN WEB, BOLTED AT THE ENDS INTO THE TOP AND BOTTOM CHORDS WITH TWO M12 BOLTS, ONE M12 BOLT INTO THE WEB AT EACH END AND NAILED LONG THE LENGTH OF THE WEB
DETAIL A
3775
37
BREAKIN WEB
2/3
1/3
ONE M12 BOLT WITH 36x4mm WASHERS BOTH SIDES INTO WEB
TOP EDGEDISTANCE
TWO M12 BOLTS WITH 36x4mm WASHERS BOTH SIDES INTO TOP CHORD
7638
114
MIN. 90mm
NAIL WITH 75 WIRE NAILS AT 300mm CENTRES TO THE ENTIRE WEB LENGTH
DETAIL B
ONE M12 BOLT WITH 36x4mm WASHERS BOTH SIDES INTO WEB
BOTTOM EDGEDISTANCE
1/3
2/3
TWO M12 BOLTS WITH 36x4mm WASHERS BOTH S I D E S I N T O BOTTOM CHORD
76
38
3775
37
REV.: 0 01-07-2001
REMEDIAL TO FIX INCORRECTLY CANTILEVERED TRUSSES
DETAIL REF.: REMEDIAL 3PAGE 80
38X114 (GRADE5) MAX 1.5m 38X152 (GRADE5) MAX 2.1m WEB CUT TO A TIGHT FIT BETWEEN CHORDS
P R E - P U N C H E D S T R A P LOOP 10 CLOUT NAILS INTO EACH MEMBER, BOTH SIDES
PRE-PUNCHED STRAP LOOP 10 CLOUT NAILS I N T O E A C H M E M B E R , BOTH SIDES
VERY IMPORTANT:THIS JOINT PLATE MUST BE CHECKED
CANTILEVER TRUSS ERECTED THE WRONG WAY
38X114 (GRADE5) ADDITIONAL WEB CUT TO TIGHT FIT BETWEEN CHORDS (NO GAPS)
38 X 114 (GRADE 5) GUSSET NAILED WITH 4-75mm NAILS PER MEMBER CONNECTED
MAXIMUM ¼ TRUSS SPAN UP TO 2000mm
LONG CANTILEVER DETAIL
M12 BOLTWITH 36X4mm WASHERS EACH SIDE
38X152 (GRADE5) ADDITIONAL WEB CUT TO TIGHT FIT BETWEEN CHORDS (NO GAPS)
38X114 (GRADE5) GUSSET NAILED WITH FOUR NAILS PER MEMBER CONNECTED M12 BOLT WITH
36X4mm WASHERS EACH SIDE
SHORT CANTILEVER DETAIL
VERY IMPORTANT:THIS JOINT PLATE MUST BE CHECKED
REV.: 0 01-07-2001
M12 BOLT WITH 36X4mm WASHERS EACH SIDE
REMEDIAL TO FIX COMPLETELY BRICKED IN TRUSSESi.e. INTERNAL SUPPORT POINT WITHOUT A TRUSS NODE
DETAIL REF.: REMEDIAL 4PAGE 81
NB: IF ADDITIONAL WEBS EXCEED 1.8m IN LENGTH, WEB T-BRACING MUST BE INSTALLED
BOTH TOP AND BOTTOM CHORDS COMPLETELY BUILT IN BY A LOAD BEARING INTERNAL WALL. NO TRUSS NODE ADJACENT TO EITHER TOP OR BOTTOM CHORD SUPPORT POINT AT INTERNAL WALL.
TWO M12 BOLTS WITH 36X4mm WASHERS EACH SIDE
TWO M12 BOLTS W I T H 3 6 X 4 m m WASHERS EACH SIDE
TRUSS TOP CHORD SUPPORTED HERE
TWO M12 BOLTS WITH 36X4mm WASHERS EACH SIDE
37 75
37
84
84
NAIL ADD. WEB WITH 75mm NAILS W H E R E POSSIBLE
38X152 (GRADE5) ADDITIONAL WEB
38X152 (GRADE5) ADDITIONAL WEB
84
TWO M12 BOLTS WITH 36X4mm WASHERS EACH SIDE
T R U S S B O T T O M CHORD SUPPORTED HERE
SEE ALSO BROKEN WEB REMEDIAL – PAGE 84
REV.: 1 09-06-2010
REMEDIAL TO FIX MONO-PITCH TRUSSES / HIP JACK TRUSSESWHICH ARE TOO SHORT – MAXIMUM EXTENSION 300mmS H E E T E D A N D T I L E D R O O F S U P T O 6 0 k g / s q . m
REMEDIAL TO FIX TRUSSES WHERE OVERHANGS ARE TOO SHORTMAXIMUM 650mm OVERHANG (i.e. TWO CONCRETE TILES)
DETAIL REF.: REMEDIAL 5&6PAGE 82
USE SAME SIZE AND GRADE TIMBER AS TRUSS TOP CHORD FOR ADD-ON OVERHANG WHICH MUST EXTEND TO PAST THE FIRST TOP CHORD NODE
NOTE: CONSULT THE SYSTEM ENGINEER WHEN LONGER THAN 650mm OVERHANGS ARE NEEDED.
NAIL WITH 75mm NAILS AT 150mm S T A G G E R E D CENTRES
TRIM TRUSS CHORD TO WITHIN WALL SO THAT T H E B E A M F I L L I N G C A N B E D O N E
NOTE: CONSULT THE SYSTEM ENGINEER WHEN LONGER THAN 300mm NIBS ARE NEEDED OR WHEN TOTAL SPAN EXCEEDS 4500mm.
M12 BOLT WITH 36X4mm WASHERS EACH SIDE
STANDARD FIXING DETAIL
USE 38X114 (GRADE5/7) UP TO 3 5 0 0 m m T O T A L S P A NUSE 38X152 (GRADE5/7) UP TO 4 5 0 0 m m T O T A L S P A N
ADDITIONAL BOTTOM CHORD MUST EXTEND TO PAST THE SECOND BOTTOM CHORD NODE
S U P P O R T P O I N T T R U S S HANGER OR WALL PLATEMAX. 200mm NIB
(GRADE5) TIMBER MAX. 300mm NIB GRADE7 TIMBER
NAIL WITH 75mm NAILS AT 150mm S T A G G E R E D CENTRES
MAXIMUM TOTAL SPAN
REV.: 1 11-06-2010
150mm
150mm
REMEDIAL TO FIX A WEB WITH EXCESSIVE BOWING(i.e. THE WEB IS BOWED BEFORE ANY LOAD IS APPLIED)
REMEDIAL TO NOTCH TIMBER TO ACHIEVE REQUIRED LEVELS
DETAIL REF.: REMEDIAL 7&8PAGE 83
NAILED ON WEB T-BRACE SEE ALSO DETAIL WEB 2 ON PAGE 61
STRAIGHTEN BOWED WEB AS MUCH AS POSSIBLE AND THEN NAIL ON 38X114 (GRADE5) WEB T-BRACE
38x114 (GRADE5) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. X 75mm NAILS AT 300mm CENTERS
DETAIL
WEB
X-X T-1
FIX TWO H. CLIPS
FLY RAFTER
3 8 X 3 8 B L O C K 200mm LONG EACH SIDE FIXED WITH TWO 75mm NAILS
FIX TWO H. CHIPS BEFORE BLOCK IS INSTALLED
38X76 BLOCK 200mm LONG FIXED WITH FOUR 75mm NAILS
TRUNCATED TOP CHORD
BATTENS / PURLINS: DO NOT NOTCH THE TRUSS TOP CHORD NOTCH THE BATTEN / PURLIN
IMPORTANT: ALWAYS NOTCH THE LESSER MEMBER.HIPS: DO NOT NOTCH THE TRUNCATED GIRDER / TRUSS NOTCH THE FLY RAFTER.
NAIL BATTEN TO EACH BLOCK
F I X H . C L I P S BEFORE BLOCK
50X76 BLOCK 200mm LONG EACH SIDE FIXED WITH FOUR 100mm NAILS TOP CHORD
5 0 X 7 6PURLIN
TOP CHORD
REV.: 0 11-06-2010
DETAIL REF.: REMEDIAL 9PAGE 84
REMEDIAL / ALTERNATIVE GIRDER TOP CHORD RESTRAINT FOR VALLEY SIDE OF CRANK
MAX. CENTRES AS NOTED BELOW
TENSIONED PRE-PUNCHED STRAP OR METAL ANGLE BRACING TO BE FIXED TO TOP OF GIRDER & TRUSS TOP CHORDS WITH 2 NO. CLOUT NAILS AT EACH CONNECTION. ENDS TO BE FOLDED OVER AND FIXED WITH A FURTHER 3 NO. CLOUT NAILS
END FOLDED OVER CHORD EDGE
SECTION B-B
STANDARD TOP CHORD BRACING
HIP SIDE
GIRDER TRUSSMAIN TRUSSES
CUT-BACKTRUSSES
RIDGE LINE
RIDGE LINE
STANDARD TOP CHORD BRACING
GIRDER TRUSS
VALLEY SIDE
END FOLDED OVER CHORD EDGE
END FOLDED OVER CHORD EDGE
PURLIN ORBATTEN
STANDARD TOP CHORD BRACING
TRUSS
GIRDERTRUSS
STANDARD TOP CHORD BRACING
SECTION A-A
NOTES:TENSIONED PRE-PUNCHED STRAP OR METAL ANGLE BRACING TO BE FIXED TO TOP OF GIRDER & TRUSS TOP CHORDS WITH 2 NO. CLOUT NAILS AT EACH CONNECTION.
ENDS TO BE FOLDED OVER AND FIXED WITH A FURTHER 4 NO. CLOUT NAILS.
THE STRAP MUST EXTEND OVER A MINIMUM OF FULL THREE TRUSSES.
THE TRUSS TOP CHORDS MUST ALWAYS BE BRACED ON BOTH SIDES OF THE VALLEY
RUNNER CENTRESLIGHT ROOF COVERING = 1200 MAX.HEAVY ROOF COVERING = 600 MAX.
END FOLDED OVER CHORD EDGE
REV.: 0 01-04-2003
PAGE 85
GLOSSARY OF TERMS AND DEFINITIONS
Apex: The top of the truss where the two top chords meet.
Batten: Small section timber members (usually 38x38 or 38x50) nailed across the top chords at a spacing of less than 540mm to carry concrete tiles, slates, metal tiles etc.
Binder: See Runner.
Block Splice: Nailed timber block used to join butting bracing members and purlins. Bottom Cord: Also tie-beam. That part of the truss that forms the bottom edge, and
joins the two heel joints, supports the ceiling, and usually flat . Sloped in scissor trusses. Abbreviated B.C.
Braced Bay: That section of roof where the diagonal bracing members are fixed. Bracket: See Cleat.
Bracing: Timber members (or of other material e.g. light gauge mild steel) fixed to several adjacent trusses usually at a 45 degree angle to make the roof stable, and to prevent buckling of compression members.
Brandering: Similar to battens but fixed to the bottom chord, to support the ceiling.
Cantilever: When the truss support on the bottom chord is some distance inside the heel joint.
Clear Span: The distance between the supporting walls (or inside face of the supports). See also span.
Cleat: Mild steel heavy-duty bracket fixed with bolts and used to support large heavy trusses / girder on a girder.
Crank: When the support wall direction change is less than 90 degrees. The roof forms a bastard hip on one side, and a valley on the other in double-pitched roofs.
Clout Nails: Wire nails 32mm long, 2.8mm in diameter, with a large head used to fix hangers, hurricane clips and pre-punched strapping. (i.e. light gauge metal to wood)
Double Pitch: Trusses where the top chords slope up to the apex at the same angles (pitches) from both ends of the truss.
Dual Pitch: Trusses where the top chords slope up to the apex at two different angles (pitch) from each end of the truss.
Dutch Hip: A hip end where the end slope does not reach the apex but the top part of the hip forms a small gable. Also called a louvre hip.
Fly Rafter: The top chord overhang at the high end of the mono pitch jack
truss which extends over the truncated hip girder and trusses. (May also be a separate loose rafter)
Gable: When the building end is vertical, the same shape as the truss, usually constructed of brickwork.
Gablet: Small gable on the roof slope, usually formed by a valley set.
Girder Truss: A truss (single or multiple ply) used to support other trusses.
Hanger: A U-shaped bracket made of light gauge galvanized mild steel used to support trusses on a girder, usually fixed with 32mm clout nails or similar. When specified, may also be fixed with bolts and 36x36X4mm washers.
Part Five
PAGE 86
Heel: The truss end joint where the top and bottom chords connect, or where the end web joins the bottom chord in stub and mono-pitch trusses.
Heel Shelf: A means of fixing the diagonal top chord bracing at the wall plate using timber, bolts, washers, nailed hurricane clips and thrust block.
Hip: When the building ends in a sloped roof (as compared to a gable).
Hoop Iron: Galvanized metal strips built into brickwork used to hold down trusses.
Hurricane Clip: A light gauge galvanized mild steel angle bracket used to fix two timber members at 90 degrees to each other.
Jack Rafter: The smallest end part of a hip corner construction using only single pieces of timber (loose rafter).
Jack Truss: The mono pitch trusses of the hip, which are supported at the high end by the hip girders.
Member: A part, or component, which together with other members make up the structure. (i.e. truss members are the top chords, bottom chords and webs which form the truss)
Mono Pitch: A truss where there is only one rafter slope. (half of a double pitch truss)
Multiple Plies: Two to four trusses nailed and bolted together to form one unit. Usually as girders.
Nails: See Clout nails and Wire nails.
Nib: Extensions of the bottom chord past the truss end, usually to support in brickwork or on a truss hanger.
Node: Also node point or joint. The places on the truss where two or more truss members are connected to each other (but not chord splices)
Overhang: That part of the truss top chord that extends past the truss heel. Measured horizontally from the truss heel on the truss, but also from the outside wall face on the building.
Pitch: Also slope, the angle between the top chord and the horizontal line from the support point. Can also be the slope of the bottom chord in a scissors truss.
Plumb: Trusses to be in a straight vertical line, i.e. 90 degrees to the floor (horizontal) level and parallel to the gable wall.
Plumb Cut: Top chord overhangs cut off vertical, i.e. up / down, to allow the fixing of fascia boards and/or square gutters at the roof truss ends.
Polynesian: Trusses with a pitch change in each top chord from a lower pitch to steeper pitch going from heel to apex.
Purlin: Timber sections (usually 50x76) fixed across the top chords at a spacing of up to 1200mm to carry metal and fibre cement sheeting.
Rafter: See Top Chord.
Runner: Bracing members that are run continuously through the entire roof or set of the same trusses, to connect the same point of each truss. Runners must be diagonally braced at every braced bay to have any effect on the stability of the roof structure.
PAGE 87
Spacing: The distance between the centres of two of the same elements, i.e. trusses.
Span: Truss span is the distance along the bottom chord between the truss ends (heels). See also Clear Span.
Splice: The joining of two members in a straight line so that these members act as one component, e.g. truss top and bottom chords, and runners. Truss webs may not be spliced (Unless approved by an engineer).
Stub End: Also stub heel. Where the top and bottom chords are some distance apart and connected by the first truss web.
Support: The point where the truss is carried by the building below. The wall (or beam) should be built to carry the truss, and there should always be a node at the support point of the truss.
Tie Beam: See Bottom Chord.
Top Chord: Also rafter. That part of the truss, which forms the top edge, usually at a slope and has the battens or purlins fixed to it to carry the roof covering. Abbreviated: T.C.
Truncated: A hip truss or girder, which has a part flat top chord, at a height so that the fly rafters of the jack trusses can just pass over the top. Also the lower truss of the 'piggy-back' or 'top-hat' truss system, i.e. when large high trusses are split horizontally into two halves for manufacturing, handling and transport purposes.
Truss: A number of timber members joined together in a triangular pattern to form a sturdy frame to carry the roof covering and any other loads that it is designed for.
Labels: All trusses should be labeled on the roof layout plan and on the truss itself. Common labels are A1, TR1, GX1, TG1, HG1, HM1, etc.
Under-gable: Formed by two adjacent double pitched trusses of different spans, where both heels are on the same wall on one side only.
Valley: A set of special trusses with decreasing spans which are supported on the length of their bottom chord by the top chords of the trusses underneath and fixed at 90 degrees to these trusses.
Valley Truss: A truss, which is supported by other trusses underneath.
Wall Plate: A timber member laid flat over the supporting wall to level the bearing surface and spread the load.
Webs: The truss members that connect the top and bottom chords, usually in a triangular pattern.
Wedges: Triangular timber blocks used in pairs to level the trusses.
Wire Nails: 75mm or 100mm long, 3 to 4mm diameter wire nails with a head, used to connect two timber members together.
Wire Ties: Two strands of wire built into the brickwork used to hold down the trusses.
TYPICAL STUB HEEL TYPICAL CANTILEVER SUPPORT
DETAIL REF.: GLOSSARY 1PAGE 88REV.: 0
01-07-2001
NODE BOTTOM CHORD(TIE BEAM)(TRUSS MEMBER)BOTTOM CHORD OR TRUSS SPAN
HOOP IRONWALL PLATE
CEILINGBRANDERING
PITCHSLOPE
WEB
WEB
WEB (TRUSSMEMBER)TILTING
BATTEN
HEELNODE
BATTENS
NODE
TOP CHORD
( R A F T E R )
( TR
US
S
ME M
B E R )
APEX NODETOP CHORD
( R A F T E R )
( TR
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ME M
B E R )NODE
BATTENS
HEELNODE TILTING
BATTEN
OVERHANG
SUPPORT WALL
OVERHANG
HOOP IRON
WALLPLATE
CLEAR SPAN (DISTANCE BETWEEN TRUSS SUPPORTS)
NODE
OVERHANG
SUPPORT WALL
CLEARSPAN
BOTTOMCHORD SPAN
BOTTOM CHORD(TIE BEAM) (TRUSSMEMBER)
WALLPLATE
HOOPIRON
HIGH BEAMFILLING
HEEL NODEWEBS
WEB
APEX NODEBATTENS
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B E R )
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ME M
B E R )
BATTENS
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CANTILEVERD I S TA N C E
BOTTOM CHORD SPAN
NODE
BOTTOM CHORD(TIE BEAM) (TRUSSMEMBER)
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BRANDERING
TYPICAL DOUBLE PITCH TRUSS
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DETAIL REF.: TYPICAL CORBELLING DETAILPAGE 89REV.: 0
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PAGE 90
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DETAIL REF.: GEYSER PERPENDICULARPAGE 91REV.: 1
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PAGE 92
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DETAIL REF.: GEYSERREV.: 0
01-11-2010
NOTES
PAGE 93
Part Six
PAGE 94
Annexure A
FULL NAME OF APPLICANT: ..................................................................................
NAME LEGAL BODY/ERECTOR’S NAME: .............................................................
TRADING NAME (if applicable): ..............................................................................
NAME TO APPEAR ON CERTIFICATE: ..................................................................
STREET ADDRESS: .................................................................................................
.............................................................................................. CODE: .....................
POSTAL ADDRESS: ..............................................................................................
.............................................................................................. CODE: .....................
TEL NO: ( ) ..................................... FAX NO: ( ) ....................................
CELL NO: .............................................. E-mail: ...................................................
Signature of Applicant: ............................................... Date: ...................................
PAGE 1 02 12 2010
Prepared for the industry by The Institute for Timber Construction South Africa
SAFCA Building6 Hulley RoadPO Box 686Isando, 1600Tel: +27 (0) 11 974 1061Fax: +27 (0) 11 392 6155Email: [email protected]
Head OfficeSouth Eastern CapePO Box 2038Knysna, 6750Ian KeeveyTel: +27 (0) 44 382 7360Fax: +27 (0) 44 382 7360Email: [email protected]
RegionsKwazulu-NatalPO Box 37515Overport, 4067Colin ArmstrongTel: +27 (0) 31 209 2045Fax: +27 (0) 31 209 2046Email: [email protected]
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Branch CommitteesFree StatePiet BothmaTel: +27 (0) 51 435 6518
MpumalangaPeet FourieTel: +27 (0) 13 741 4437
LimpopoAndre van der KolffTel: +27 (0) 15 291 3104