MMAH Supplementary Standard 58.7 Guards forHousing ...€¦ · (3) Guards located insideabuilding shallbeconstructed inconformance with Seclion2orSection 3ofthis Supplementary Standard

l>OntarioMinistry of Municipal Affairs and HousingBuilding and Development Branch

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MMAH Supplementary Standard 58.7

Guards for Housing and Small BuildingsC)

September 14, 2012

'~J'"\: --~

2012

COMMENCEMENT

MMAH Supplementary Standard S8-7 POntario

MMAH Supplementary Standard SB-7 comes into force on the 1st day of January, 2014.

@Copyright

o Copyright Queen's Printer for Ontario 2012

All rights reserved.

Questions regarding copyright, including reproduction and distribution, may be directed to the Director,Building and Development Branch of the Ministry of Municipal Affairs and Housing.

,.

2012 MMAH Supplementary Standard 58.7 £;>Ontario

S8 ..7 Guards for Housing andSmall Buildings

Section 1 General

1.1. Introductiono 1.1.1. Scope (See Appendix A)

(1) TI,is Supplementary Standard includes details for the construction of wood guards,

(2) Guards located on the exterior of a building, where they may be subject to deterioration, shall be constructed inaccordance with Section 2 of this Supplementary Standard, (See Appendix A,)

(3) Guards located inside a building shall be constructed in conformance with Seclion 2 or Section 3 of thisSupplementary Standard.

1.2. Design of Guards

o 1.2.1. Cantilever Action (See Appendix A)

(I) The construction details for guards in this Supplementary Standard are based on the assumption that the guard actsas a cantilever in resisting lateral loads.

1.2.2. Classification (See Appendix A.)

(t) The structural systems of guards described in this Supplementary Standard are grouped into the followingclassifications:(a) Post and Rail Systems, and(b) Cantilevered Picket Systems.

Section 2 Exterior Guards

2.1. Materials

(')""'" .

2.1.1. LumberGrades (See Appendix A)

(1) The minimum grade of softwood dimension lumber for posts, rails and joists shall be Northern Species, NO.2.

(2) The minimum grade of softwood dimension lumber for pickets shall be Northern Species, NO.2 Picket grade.

(3) Wood for pickets shall be free of loose knots.

SB-7 • Page 1

2012 MMAH Supplementary Standard S8-7 POntario

2.1.2. Lumber Dimensions

(I) Except as permitted in Sentence (2), the minimum sizes of load bearing elements of wood guards shall conform toTable 2.1.2.

Table 2.1.2.Minimum Size of Loadbearing Elements

Guard Element MinimumSize, mm (in)

Post 89x89(4"x 4" nominal)

Top Rail 38x89(2' x 4' nominal)

Bottom Rail 38x89(2" x 4' nominal)

Picket I Baluster 32x32(19M x 19/,,")

Column 1 2

(2) Where a bottom rail is bevelled, the minimum sizes shown in Table 2.1.2. may be reduced to allow for a bevel, asdetailed in Figure 2:1.2. .

I '1<~9ml"Q.~ .'

Figure 2.1.2.Bevel Delail

2,1.3. Floor Construction (See Appendix A.)

(I) The minimum dimensions of wood fioor joists and \vood decking shall conform to Table 2.1.3.

(2) Except as provided in Details EA-! to ED-5, wood decking shall be fastened to each fioor joist with nailingconfonming to Table 2.1.3.

Page 2 • SB-7

2012 MMAH Supplementary Standard 58-7

Table 2.1.3.Minimum Size of Floor Elements

POntario

~o.'-

Floor Element Minimum size, mm (in)

25 x 140('14" x 6' nominal),

Dimension Lumber Deckingwhen each plank is fastened with 2 - 63 mm (2Y,') nails

38 x89(2' x 4" nominal),

wnen each plank is fastened with 2 - 76 mm (3") naiis

Dimension Lumber Joists 38 x 184(2" x 8' nominal)

Column 1 2

2.1.4. Connectors (See Appendix A.)

(1) Nails, screws, lag bolts and machine boits shali not cause splitting of wood elements.

(2) Fasteners shali be resistant to corrosion.

(3) All nails shali be common spiral.

(See also A-2.1.4. inAppendix A for glued joints.)

f),,~. 2.1.5. Decay-Resistant Lumber (See Appendix A.)

(I) Lumber for guard systems and floor systems shall be(a) a species resistant to decay,(b) preservative treated to prevent decay, or(c) pressure-treated.

(2) All cut ends of preservative treated lumber shall be treated to prevent decay.

2.2. Structural Details

&.(.'" .),.<:;J2.2.1. Post and Rail System

(I) An exterior guard constructed as a Post and Rail System shall conform to the applicable connection details listed inrable 2.2.1.

2.2.2. Cantilevered Picket System

(-) (I) An exterior guard constructed as a Cantilevered Picket System shali conform to the applicable coJinectiondetails;~ [isted in Table 2.2.2.

SB-7 • Page 3

2012 MMAH Supplementary Standard S8-7

Table 2.2,1.Exterior Post and Rail System Connection Details

POntario

ConnecUon Detail Detail Number Description

EA-1 Top rail nailed to postTop Rail to Post EM Top/bollom rail skew nailed to posll'lilh 76 mm (3') nails

and I or EA-3 Topiboltom rail skew nailed to post with 63 mm (2'10') nails

Bollom Rail to Posl EA4 Toplbollom rail face nailed or screwed to post

EA-5 Topibottom rail faslened to posl with framing anchors

EB-1 Post nailed to rim jolsl

EB-2 Post screwed to rim joist

EB.3 Post balled to floor joist I'Iilh 8 mm ('/t6) machine boltsPosllo Floor

EB4 Post boiled to floor Joist I'Iith 9.5 mm ('Is') machine bolls

EB-S Post balled to 2 floor joists

EB.6 Post fastened tb floor, where guard Is parallel to floor joists

EC-1 Picket nailed 10endcap; endcap screwed 10rail

EC-2 Pickel nailed 10railInflll Picket

EC-3 Pickel screwed to rail

EC-4 Picket screwed to top rail and rim joisl

Column 1 2 3

Table 2.2.2.Exterior Cantllevered Picket System Connection Details

Connection De:ail Delail Number Descripllon

Cantilevered PickelED.! Picket screwed to rim joist

(Douglas Fir-Larch, Spruce.Pine-Fir, Hem.Fir Species) ED.2 Picket screwed 10rim joisl, where guard is parallel to floorjoisls

Cantilevered PickelEO.3 Pickel screwed to rim joist and deck .

{Northem Species) ED4 Pickel screwed to rim joist and deck, where guard isparallel 10floor joists

Cantilevered Picket(Douglas Fir-Larch, Spruce-Pine-Fir, Hem-Fir Species, ED-5 ComerNorthern Species)

Column 1 2 3

Page 4 • SB.7

..-_.~.

2012 MMAH Supplementary Standard S8.7 [>Ontario

C'~)... .';j~-.,.- .-' Section 3 Interior Guards

3.1. Materials

3.1.1. Lumber and Wood Products

(1) Lumber species used for a primary loadbearing element in a guard shall be a species listed in the Table 3.1.2.

(2) Except as provided in Sentence (4), the minimum grade of softwood dimension lumber for posts, rails and joistsshall be Northern Species, NO.2.o (3) Except as provided in Sentence (4), Ihe minimum grade of softwood dimension lumber for cantilevered pickets shall

'- be Northern Species, NO.2 Picket grade.

(4) White pine and hemlock lumber used for posts, ralls and non-cantilevered pickets shall be clear straight grainmateria!.

(5) Oak, maple and yellow poplar lumber used for posts, rails and pickets shall be clear straighl grain materia!.

3.1.2. Lumber Dimensions

(1) The minimum sizes ofloadbearing elements of wood guards shall conform to Table 3.1 .2.

o 3.1.3. Floor Construction

(I) The minimum dimensions of wood floor joists and wood subfloorlng shall conform to Table 3.1.3. (See A-2.1.3. inAppendix A.)

3.1.4. Connectors

(') Nails, screws, lag bolts and machine bolts shall not cause splitting of the wood elements. (See A-2.IA. inAppendix A.) (See also A-2.1.4. in Appendix A for glued joints.)

3.2. StructuralDetails

3.2.1. Post and Rail Systemo (I) An interior guard constructed as a Post and Rail System sh.1I conform to the applicable connection details listed inTable 3.2.1.

()3.2.2. Cantilevered Picket System

(I) An interior guard constructed as a Cantilevered Picket System shall conform to the applicable connection det.llslisted in Table 3.2.2.

3.2.3. Guards for Stairs

(1) An interior guard for a stair shall conform to the appropriate connection details listed in Table 3.2.3.

SB-7 • Page 5

2012 MMAH Supplementary Standard S8.7

Table 3.1.2.Minimum Size of LoadbearingEhiments

f;.> Ontario

•Guard Element Species Minimum Size, mm (in) Detail Numberlll

Oak, Maple 70 x 70 (23/," x 23/4")Base, IB-l, IG-l, IG-2, IG-3Posl

45 (1'/,') Tumed Diameter

Hemlock, White Pine, Yellow 82 x 82 (3"" x 3'/4") Base, 18-1, IG-l, 1G-2,IG-3Poplar 50 (2") Tumed Diameter

Post in a Volute Oak, Maple 70 x 70 (2'/" x 2'/,') Base. 1G-450 (2') Turned Diameter

Top Rail Oak, Maple 41 x 67 (1'I,' x 2'/,")

41 x 67 (1'/a' x 2'/,") IA-l,IF-1Bottom Rail Oak, Maple 19 x 67 ('J •• x 25Ja"),

~ continuously supported

Oak, Maple 20 ('/,') Diameter

InfiDPicket Yellow Poplar 22 ('/,') Diameter IC-l,IC-2

White Pine, Hemlock 24 (31/32") Diameler

Oak, Maple 32 x 32 (1'1,," x 1'132') Base, IG-420 ("") Tumed Diameter

Picket in a Volute Yellow Poplar 45 x 45 (1'/" x 13/") Base,22 (7Js") Tumed Diameter

45 x 45'(131" x 1'/,') Base,1G-5,1G-6

White Pine, Hemlock 24 (31/,,") Tumed Diameler

Northern Species,

Cantilevered Picket Douglas Fir-Larch, 32 x 32 (19/,,' x 19132') IE-I, IH.1Spruce-Pine-Fir. Hem-Fir,

Hardwood

Column 1 2 3 4

Noles to Table 3.1.2,;1, This column lists details Ihat incorporate the guard elements specified In this Table.

Table 3.1,3.Minimum Size of Floor Elements

Floor Element Minimum size, mm (in)

Subfloor 15.5 ('/,') plywood or equivalent

Dimension Lumber Joists 38 x 184 (2" x 8' nominal)

Column 1 2

Page 6 • SB.7

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I.

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Table 3.2.1-Interior Post and Rail System Connection Details

POntario

f)

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Connection Delail Delail Number Description

Top andlor Bottom Rail to Posl IA-1 Rail glued and screwed 10 posl

Post 10 Floor 18-1 Notched post glued and boiled to rim joist

IC.l Pickelsellnto railsInfill Picket

IC-2 Pickel dowelled inlo rails

Stud Wall 10-1 Wood stud and gypsum board

Column 1 2 3

Table 3.2.2.Interior Cantilevered Picket System Connection Details

Connection Delail DetaDNumber Description

Pickel 10 Floor IE.1 Picket screwed 10 rim joist

Column 1 2 3

Table 3.2.3.Interior Stair Guard Connection Details

Connection Detail Delail Number Description

Rail 10 Post IF.1 Top or bottom rail glued and screwed to posl

1G-1 Notched post glued and screwed to stringer and riser

Posllo Floor IG-2 Post glued and wewed 10 slringer

IG-3 Post glued and screwed to stringer and slud wallandlor

104 Posl and picket volule, oak or maplePickel Volute to Floor IG-5 Pickel volule, 260 mm (10'1() wide

1G-6 Picket volule, 240 mm (9'/'") wide

Infill Picket DelaillC-l or 1C-2in Table 3.2,1., modified to suit a sloping installation, may be used.

Cantilevered Pickel IH-l Picket screwed to stair stringer

Column 1 2 3

SB-7 • Page 7

2012 MMAH Supplementary Standard 58.7 POntariO

PLAN

AXONOMETR/C

;/- 76 mm (0'1 NAILS

FRONT ELEVATION

/Of' IlM

/

POST

SIDE ELEVATION

Detail' EA.1Exterior Connection: Top Rail Nailed to Post

Notes:1. The top rail musl be continuous. Use Detaii EA-5 at the end spans, where continuny ends,

MAXIMUM SPAN OF RAIL BETWEEN POSTS

Species Maximum Span, m (n-in)

Douglas Fir-Larch, Hem.Fir, Spruce-PIne-Fir 1.52 (5'-0")

Northern Species 1.52 (5'-0')

Column 1 2

Page 8 • SB-7

o


2- 76 mm lJ1 NAILSIP81 CONNECTION

PLAN

£>Ontario

o

12 MIN19 MAX

12 MIN19M\)(

FRONT ELEVATION

AXONOMETRIC

RAILS/;

SIDE ELEVATION

0,',",-""I

Detail EA.2Exterior Connection: Top/BoUom Rail Skew Nailed to Post. 76 mm (3") Nalls

Noles:1. The maximum span is more often gOVl!rnedby post spacing.2. Provide support \0 bottom rail at Inlervals not more than 2.0 m (6'-7').3. The bottom rail may be bevelled as detailed In Figure 2.1.2.4. Dimensions shown are in mm unless otherwise specified.

MAXIMUM SPANOF RAIL BETWEEN POSTSSpecies Maximum Span, m (ft.ln)

Douglas F~-larch, Hem-Fir, Spruce-Pine-Fir 2.72 (8'.11')Northern Species 2.18 (7'-2')

Column 1 2

SB-7 • Page 9

2012

POST

MMAH Supplementary Standard SB-7

3. 63 rrm 12 1/2'1 NAlLSi PEl( CONNECTION

PLAN

POntario

(

(

(

AXONOMETRIC

12 MIN19 MAX.

12MIN19 MAX,

'. ....'; RAilS

// (

FRONT ELEVATION SIDE ELEVATION

Detail EA.3Exterior Connection: Top/Bottom Rail Skew Nailed to Post - 63 mm (2%") Nalls

Noles:1. Provide supporllo bollom rail al intervals nol more ihan 2.0 m (6'-7'),2. The haltom rail may be bevelled as detailed in Figure 2.1.2.3, Dimensions shovm are In mm unless otherwise specified.


Species Maximum Span, m (fl-in)

Douglas Fir-Larch, Hem-Fir, Spruce-Pine-fir 2.72 (8'-11')

Northem Species 2.18(7'-2')

Column 1 2

Page 10 • SB-7

( )

\

2012 MMAH Supplementary Standard S8-7

DECK SIDEPOSTS

\\ 2 - #8 x 76 rrml31 SC1lE\W

[;.>Ontario

o••

PLAN

•~ ,

AXONOMETRIC

/~L

FRONT ELEVATION SlOE ELEVATION

Detail EA-4Exterior Connection: Top/Bottom Rail Face Nailed or Screwed to Post

Notes:1. If Ihe rails ere located on the deck side 01the posts, 76 mm (3") nails may be used in place of the screws.(j'" 2. Where the top rail is continuous, the top rail may be fastened 10each post vAth3 • #8 x 76 mm (3') screws.

",., . 3. Dimensions shown are in mm unless otherwise specified.

MAXIMUM SPAN OF RAIL BETWEEN POSTSSpecies Maximum Span, m (ft~n)

Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir 1.77 (5'.10')

Northern Species 1.41 (4'-8')

Column 1 2

SB-7 • Page 11


\ MINIMcM 20 GUAGE\ FRAMING ANCHOR\. • N'JLS AS RECOMMENDED, BY MANUFACTURER\ [!mCALlY 3.6 mm x 3B mm)

bCORROSION RESISTANT

FRAMING ANCHORPOSTFRAMING ANCHOR

RAll

>t-7D1~

PLAN

FRONT ELEVATION

AXONOMETRIC

• 0 0

SIDE ELEVATION

Detail EA-SExterior Connection: Top/Bottom Rail Fastened to Post with Framing Anchors

Notes:1. Provide support to bottom rail at intervals not more than 2.0 m (5'-?").2. The bottom raii may be beveiled as detailed in Figure 2.1.2.3. Dimensions shown are in mm unless otherwise specified.


Species Maximum Span, m (ft.in)

Douglas Fir-Larah, Hem.Fir, Spruce.Pine.Fir 2.72 (8'.11")

Northem Species 2.18 (7'-2")

Column 1 2

Page 12 • SB-7

2012 MMAH Supplementary Standard SB-7 [>OntariO

,n; ."', .'

406 ---.1

o

2 - 76mm [3' NAJLS./"

A.OOR JOISTRIM JOISTPOST

AXONOMETRIC

4 - 76 mm (31 NAIlS PER SIDE

300200

SEENOTES 2 & 3 FOR ATTACHMENT Of FIRSTBOARD

\DECKING

PLAN

I • , I • I L1~J•I • • I I I

I • , I I I

I• 01 I.' • 0'"

'"NFRONT ELEVATION SIDE ELEVATION

o

Detail EB-1Exterior Connection: Post Nailed to Rim Joist

r- Notes:U 1. Decking is omitted from the plan view and tile axonometrlc view for cJanty.2. Fasten 25 mm x 140 mm ("" x 6" nominal) .ouler deck board 10 rim joist with 63 mm (2'/,') nails at 300 mrn (12").3. Fasten 25 mm x 140 mm ("'" x 6' nominal) outer deck board 10floor joist with 1 - 63 mm (21/,') nail at each joist.4. The posl may be posiUoned anywhere between the joists.5. Dimensions shown are in mm unless othelWlse specified.


Species Maximum Span, m (ii-in)

Douglas Rr-Larch, Hem-Fir, Spruce-Pine-Fir 1.22 (4'.()")

Northem Species 1.20 (3'-11')

Column 1 2

SB-7 • Page 13

2012 MMAH Supplementary Standard S8.7f):-">f,Y Ontario

~ .. 4_a6_ ""-"---1RIMJO~TPOST

/4 - 76 mm [3') NAILS

-"-"----.-.4 -1I'lx76 mm 131

SCI1EWS PER SIDE

(

(PLAN AXONOMETRIC

i,n r" 1

.,N

SEE NOTES 2 & 3FOR CONNECnOOOF THERRST BOAllD \

\\/,DECKING

/

.1

.1

I

I

I 0I

I.

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Detail EB.2Exterior Connection: Post Screwed to Rim Joist

Notes:1. Decking is omilled (rom the plan view and the axonametnc view for clanty,2, Fasten 25 mm x 140 mm ('14' x 6" nominal) outer deck board to rim joist with 63 mm (2'/'") nails at 300 mm (12'),3, Fasten 25 mm x 140 mm (5/," x 6" nominal) outer deck board 10 floor joist with 1 • 63 mm (2'12') nail at each joist.4, Thepost may be positioned anywhere between Ihe joists,5, #9 screws may be replaced by #8 screws if the maximum spacing between posts is not more than 1,20 m (3'.11'),6, Dimensions shown are in mm unless otherwise specified,

('-.


Species Maximum Span, m (ft-in)

Douglas Fir.Larch,l1em-Fir, Spruce.Pine.Fir 1,56 (5'.1")

Northern Species 1.20 (3'.11"). Column 1 2

Pngc 14 • 88.7

2012 MMAH Supplementary Standard S8.7 POntario

0:"'" .

I'A06

Fl.OOIl JOISTPOSTRIM JOIST

3- 82 mm [3 141N!'JLS

PLAN

/2-6rTrnX 152mm

(5/16', 6'1! tMCHlNE BOLTS &/ A-32mm11 WI

OUTSIDE DIM1.FENDER WASHERS

AXONOMETRIC

o"J

'"<'<,

lll,

-t.,,", J= I

-11:LFRONT ELEVATION SIDE ELEVATION

Detail EB-3Exterior Connection: Post Bolted to Floor Joist - 8 mm (5/16'" Bolts

Notes:tJ.~' 1, Decking Isomitted from the plan view and the axonomelric view for clarity.". 2. 38 mm (1'h") post projection is not required where the maximum spacing between posls does not exceed 1.20 m (3'-11").

3, Joists may be spaced at610 mm (24") o.c. or 406 mm (16') o.C.4. Where floor joists are spaced at610 mm (24") o.c., decking shall have a minimum thickness of 38 mm (1';'") and shall be fastened to

the flocr with 2 - 76 mm (3") nails,5. Dimensions shown are in mm unless otherwise specified,

or")"~•••••

MAXIMUM SPACING BETWEEN PCSTSSpecies Maximum Span, m (f1-in)

Douglas Flr-Larch, Hem-Fir, Spruce-Pine-Fir 1.29 (4'-3")

Northem Species 1.20 (3'-11")Column 1 2

SR-7 • Page 15


AXONOMETRIC

'I,

'--.•.....•..- '~,'?, I,\2' 9,5mm x 152mm [31S' x 6'1

MACHINE SOlTS &4-38mm(1 'h')

fENDER WASHERSPLAN

flOOR JO~TPOSTRIM JOIST

401\

3-82 mml3 '1.1'NAIlS -""

1<-

"

FRONT ELEVATION

"'"I.., i:"

'"M "'"20

SIDE ELEVATION

Detail EB-4Exterior Connection: Post Bolted to Floor Joist. 9.5 mm (3/8") Bolts

Notes:1, Decking is omitted from the plan view and the axonometric view for clarity,2, 36 mm (1'11") post projection is not required where tlle maximum spacing between posts does not exceed 1.20 m (3'.11"),3, Joists may be spaced al610 mm (24") o,c, or406 mm (16") o,c,4, Where floor joists are spaced al610 mm (24') o:c" decking shall have a minimum thickness of 38 mm (1'{2') and shall be fastened 10

tlle floor wiih 2 - 76 mm (3") nails,5, Dimensions shown are in mm unless otllerwise specified,

MAXIMUM SPACING BETWEEN POSTS

Species Maximum Span, m (n.in)

Douglas Fir.Larch, Hem-Fir, Spruce-Pine.Fir 1.49 {4'-11"J '

Northern Species 1,20 (3'.11")

Column 1 2

Page 16 • SB' 7

2012 MMAH Supplementary Standard S8.7 [;>OntariO

',r.);~ .

()

406

FLOOR JOl5TP05rRIM JOIST

"'--...

PLAN

1

~,

\2.9.5 rM1x205 rrm [3/8'1<81MACHINE BOlTS 8<

4.3Bmm(l V,1FENDER WASHERS

AXONOMETRIC

20."N

SIDE ELEVATION

.,j--N'

DECKING ""

"

FRONT ELEVATION

o

Detail EB.5Exterior Connection: Post Bolted to 2 Floor .Joists

()

Notes:1. Decking is omitted from lhe plan view and Ihe axonometric view for clarity.2. 38 mm (1'1,') post projection is not required where the maximum spacing between posts does not exceed 1.20 m (3'.11').3. Joists may be spaced al610 mm (24") o.c. or 408 mm (16') o.c..4. Where floor joists are spaced al610 mm (24") o.c. decking shall have a minimum thickness of 38 mm (1112') and shall be fastened 10

the floor with 2 • 76 mm (3') nails.5. Dimensions shown are in mm unless otherwise specified.

MAXIMUM SPACING BETWEEN POSTSSpecies Maximum Span, m (ft.in)

Douglas Fir-Larcl1, Hem-Fir, Spruce-Pine-Fir 2.14 (7'-0')

Northem Species 1.20 (3'-11')

Column 1 2

SB.7. Pagel7

2012 MMAH Supplementary Standard 58.7 POntario

I,I

\

RIM JOISTFLOOR JOIST~,4

/\ BLOCKINGI ./

3 - 82 mm [3 \/'] N!>JLS

PLAN AXONOMETRIC

(

:r.'IIII

01

yy . /."~'.,' .:"

"

, .

_ t---L .i---1 10'

"" '"N I

ELEVATION B-B ELEVATION C-C

Detail EB.6Exterior Connection: Post Fastened to Floor, Guard Parallel to Floor Joists

Notes:1. Use any of the connection delails shown on Details EB-1 to EB-5 allocation 'A". Connection Detail EB-4 is shown in this detail, as an

example,2. Maximum spacing be~veen posts is determined from connection delail used at location "A',3, Decking is omitted from the plan view and the axonometrtc view for clarity,4. Blocking shall be nolless than 38 mm x 184 mm (2" x 8' nominal).5. Dimensions shown are in nun unless othei'Mse specified.

Page 18 • 8B-7

2012 MMAH Supplementary Standard S8.7 .[:.>Ontario

()

()..•... ~

'J'-t ..

BOTTOM RAIl,---ENDCAP

,,

i~PICI<ET

PlANBOTTOM RAIL

1#7 x 50 rru:n [2'J SCRewsI

/ 2 - 50 mm 12') NAlLS

FRONT ELEVATION

AXONOMETRIC

----- RAl--19x36(I"X21

ENDCI'P

SIDE ELEVATION

oDetail EC.1

Exterior Connection: Infill Picket Nailed to Endcap . Endcap Screwed to Rail

Notes:1. Faslen eacl1 end of each picket 10 endcaps wil112 - SOmm (2') nails.2. Fasten endcaps to rails wilh #7 x 50 mm (2") screws al300 mm (12') o.C.3. See Table 2.1.2. for minimum sizes of pickets.

SB-7 • Page 19


RAIL

r-PICKETI

PLANBOTTOM RAIL

AXONOMETRIC

",II

TOP RAIL-- 19 x 32 BLOCKING

2.32mm(1 W)FINISHING NAn.S ,I

2. SDrrm [21FINISHING _s ~,

• •

SEE DETPJl 2,1.2 .-/"


Detail EC-2Exterior Connection: Inflll Picket Nailed to Rail

Notes:1, See Table 2,1.2, for minimum sizes of pickels,2, Dimensions shown are in mm unless otheJWise specified,

Page 20 • SB.7

o2012 MMAH Supplementary Standard 58-7 [>Ontario

'.0"If .•. '_

o

DECKSIDE.-RAIL

\ ~Cl<ET\'7X63mm[2 ~1SCREW

.PLAN

AXONOMETRIC

o

o

o

o

o


Detail EC-3Exterior Connection: Inllll Picket Screwed to Rail

SB-7 • Page 21

2012 MMAH Supplementary Standard $8.7 POntariO

DECKSIDE

"\

AXONOMETRIC

82 mm (3 Vl1NAlLS @ 300 "-

TOP Il.'Jl '" .""....••..•... ,.. "

# 7 x 63 mm [2W;'" -... , .SCREW ---...

~'- ".36,69{2","Il.'Jl

•

PLAN

o

PICI<ET ...

o •#7x63 mm [2 'hiSCREW '_ •• ___...---._~

RIM JOIST


Detail EC-4Exterior Connection: Infill Picket Screwed to Top Rail and Rim Joist

Note:1. Dimensions shown are in mm unless otherwis6 specified.

)

Poge 22 • SB-7

2012 MMAH Supplementary Standard S8.7 E>Ontario

PLAN •

#7x 76mm IS1SCREw.>@ sao '"lao RAIL__ '''"-'-..----#7x03mm[2111SCREW _

S8x89(Tx4') -RAIl ---~-_.,--- ,. ..•

RIM JOIST

AXONOMETRIC

1"'8x03mm(2 \\'1

SCIlEWS@ 200(B')- SEENOTE6

2 - #B x 03 mm (:l II') SCREWS/ P81 CONNECTION WIIH JOlSlS

/ ~25xl40(614'x61

/DECI<lNG (0lJIB1 BOARD ONLY)- SEENOTE5

8

2-#7x76[3']SCREw.>~

oo

{.J.\.

o oJ05l1;@406


Detail ED-1Exterior Connection: Cantilevered Picket Screwed to Rim Joist

Noles:1. Provide a suilable post, return, or solid support at each end of [he guard.2. Wood for cantilevered pickets shall be Douglas Fir-Larch, Spruce-Pine-Fir, or Hem-Rr Species.3. Faslen rim Joisllo each floor Joistwith 3 - 82 mm (3'1,') nails.4. Dimet1sionsshown are in mm unless otherwise specified.5. The outer deck board shall nol be less than 140 mm (6' nominal) wide. Where 38 mm (2' nominal) lhick boards are used, the iength of

the wood screws shall be nolless than 76 mm (3').

8B.7 • Page 23

2012 MMAHSupplementary Standard S8.7 POntariO

a----;Et.-- ---- --

PLAN

#7x76mm(3jSCREWS @ 300 '---. ~'-TO!' RAll ,_--=:~~"""'.#7x63 mm 12W)SCREW- __ "--,-.36 x 8912" x 4"JRAJl

AXONOMETRIC

o 0

o o

2-#7x76[31SCREWS

8

.L

12.#8x63mm[2Jh1.I SCREWS AT EACH

I,25 x 140 (514" x 61 BOAAD-SEE NOTE 5

. _.. RIM JOIST

/'/

FRONT ELEVATION

BlOCl<lNG@ 400 mm (16"J/

SIDE ELEVATION

Detail ED-2Exterior Connection: Cantilevered Picket Screwed to Rim Joist,

Guard Parallel to Floor Joists

Notes:1. Provide a suitable posl, relurn, or solid support al each end of the guard.2. Wood lor canUievered pickets shall be Douglas Fir"Larch, Spruce-Pine-Fir, or Hem-Fir Species.3. Faslen rim joisllo blocking with 3 - 82 mm (3",) nails.4. Dimensions shovm are in mm unless olhalwise specified.5. Where 36 mm (2" nominal) thick boards are used, the length of the woD<!screws shall be nolless than 76 mm (3").

Page 24 • SB- 7

(

't2012 MMAH Supplementary Standard S8-7 f:.>Ontario

PLAN

#7x76mm[3,SCREWS@300

AXONOMETRIC101' RAIL

#7 x63 mm (2!h'SCREW

38x 89(2".4')RAIl

'.'~"'" J

P:)'" g------.-i£t---\~, - -- --- -• : I--

",")...~---.•..

o

• •

• •

PICl<ETS

2-#7.76[3,SCREWS

8

JOISTS@406


oDetail ED-3

Exterior Connection: Cantilevered Picket Screwed to Rim JoIst and Deck

Notes:1. Provide a suitable post, return, or solid support at each end of Ihe guard.2. Wood for cantilevered pickets shail be Northern Species.3. Faslen rim joist 10each floor joist with 3- 82 mm (3'/,") nails.4. Dimensions shown are in mm unless otherwise specified.

SB-7 • Page 25


a-~--tf-- ---- -• • • I

PLAN

#7 x76mm(31SCREWS@300

lOP IWl

#7X63~'SCREW

AXONOMETRIC

P1CI<ETS

2. #8 X 761TVTl (31 SCREWS/ N EACH 38 x 140 12" x 6"} BCl'JlD

#7 x 76 (31 SCREW

SIDE ELEVATION

#9X8913W]SCREW

0 0

8~ 0

0 0 ~ ~ -r-:\ BloaaNG@4OO1161

FRONT ELEVATION

Detail ED.4Exterior Connection: Cantllever~dPicket Screwed to Rim Joist and Deck,

Guard Parallel to Floor Joists

Noles:1. Provide a suitable post, relurn, or solid support at each end of the guard.2, Wood for cantilevered pickets shall be Northern Species.3, Faslen rim joist 10blocking with 3.82 mm (3 "") nails.4. Dimensions shown are In mm unless otherwise specified.

Page 26 • S B-7

2012 MMAH Supplementary Standard SB.t . £t>Ontario

C)

oPLAN TOP RAIL

3-#8x76mm(3")SCREWS

o

AXONOMETRIC

ONE FASTENER IN HORIZONTALLY ORIENTATED PORTION OF TOP RAILAND lWO IN VERTICALLY ORIENTATED PORTION,

FRONT TOP RAIL SIDE TOP RAIL

oO~"'."

,~;

o

Detail ED.5Exterior Connection: Comer Joint

Notes:1, Screws fastening pickels are omilled for clarity,2, Provide a minimum of 10 picllels beyond the retum if end restraint of the guard is provided by this return detail only,

SB-7 • Page 27

2012 MMAH Supplementary Standard 58-7 POntariO

IlA/L GLUED IN PlACE TO POST

POsT

AXONOMETRIC

67

PLAN

/ #10x89mm13 WI SCREW,

45


DetaillA.1Interior Connection: Rail Glued and Screwed to Post

Notes:1. Other top rail systems may be used provided the section modulus is not less than 24,000 mm'. measured about the x-x axis.2. Pickets omitted on drawing for clarity.3. Connection details for fastening of pickets 10 rails are shown on Details IC-1 and IC-2.4. Dimensions shown are in mm unless otheiWise specified.


Species

oak. Maple

Column 1

Maximum Span, m (ft~n)

3.30 (10'-10")

2. -,"

Poge 28 • SB-7


!3 • 82 ITV11(3 V.1:' ~LS POST

\'POST GlUED IN PlACE 10 JOIST

PLAN AXONOMETRIC

2- #10.63 mm (2\\1SCREW.l,

\ .••.." ,•.. "

\, "" ,•. ,

\" .•.

o ,,,,, ,'0 ,

,'J ~J1\ "'\ /:, : I

Ii:, J' ,, ,, ,L J

A

,9,6 rrrn (3181 BOlIWITH/2- 32 mm(l '1<1 FENDERWASHERS

'0' 3' ,:: ~, ,, ,, ,, ,'0,

-FRONT ELEVATION SECT/ON.A

DetaillB.1Interior Connection: Notched Post Glued and Bolted to Rim Joist

Notes;I, Minimum dimension of post is 82 mm x 82 mm (3'14" x 3'14"),2, Nolch posl38 mm x 152 mm (1'12' x 6") at rim joist.3, Dimensions shown are in mm unless otherwise specified,


PoslSpecies Maximum Span, m (n-in)

Oak, Maple, Yellow Poplar, Hemlock, While Pine 3,30 (10'.10')

Column 1 2

SB-7 ' Page 29

2012 MMAH Supplementary Standard 5B.7 POntario

t:N::::::NfPLAN

AXONOMETRIC

SPACER'

(

,.l,


Detail IC.1, Interior Connection: Infill Picket Set into Rails

Noles:1. See Table 3.1.2, for minimum sizes of pickets.2. For top and botlom rail provide 6 mm ('/<") deep rabbe!.

,Page 30 • SB-7

~.

2012 MMAH Supplementary Standard 58.7 £;.>Ontario

()

t)..,'\., J

f=m_-~f-~-----~-

PLAN

.-.,

•••• 1

.-.,

AXONOMETRIC

lOPFW..

19mm(314")DI'o'A,x19mm (314')DOI\BS

roroMPAlL-


[)C'\---

DetalllC-2Interior Connection: In'lII Picket Dowelled into Ralls

Notes:1. see Table 3.1.2 for minimum sizes ofpickels,2. Pickels dowelled 19 mm ('I<'') deep inlo rails with 19 mm ("") diameter dowels.

SB-7 • Page 31

2012 MMAH Supplementary Standard S8.7 [>Ontario

AXONOMETRIC,

\ 38 x 89 (2~x 4") lOP FlA1E.

./ 12.7mm rhiG'tffi.M BJI'IU/' /3. #8x 76 mm (31 S:::f8'\S

/ / 9.Hl!lOR

! 38 ,89 (2' x4') WlODSlWS

!1i

" 3 . 82 mm (3 W} NAlLS

PLAN


DetaillD.1Interior Connection: Wood Stud and Gypsum Board Guard

Notes:1. Fasten plywood subftoor to joists \11th 50 mm (2") nails al150 mm (6') oc along edges and at 300 mm (12') oc along intermediate

supports.2. Gypsum board omitled on plan, front elevation, and axonomelric for clarity.3. Dimensions shown are in mm unless otherwise spoofied.4. Provide a suitable post, return, or solid support al each end ollhe guard.

MAXIMUM SPACING BETWEEN WOOD STUDS

Slud Species Maximum Spacing, mm (in)

Douglas Fir-Larch, Hem.Fir, Spruce-Pine-Fir, Northern Species 406 (16')

Column 1 2 .....

Page32 • SR-?

2012 MMAH Supplementary Standard 58.7 [;.> Ontario

()LANDING

PLANo

o

•

•

o

oo

,AXONOMETRIC

/45 x 1'aI TOP RAIL

2 ,#10 x50 (2") SCREWSCOUNTERSUNK a mm ("'161 \

••••,,',,'J'",~\ ..

o 0

• 0

o 0

, • #10 x 50 (Z') SCREWSCOUNTERSUNK Bmm (51161 \.

/ SUBFlOOR


.t,J","-~'t., .. '_'

o

Detail IE.1Interior Connection: Cantilevered Picket Screwed to Rim Joist

Notes:1, Provide a suitable post, return, or solid support at each end of the guard.2. See Table 3.1.2. for minimum sizes of pickets.3. Dimensions shown are In mm unless otherwise specified.4. Rim joist and lop rail of oak or maple.

SB-7 • Page 33


PLAN

45

Ri'Jl

67

><l'/.

f f;i ~ ~f/.- '-'

TOP RAIL SECTION

~#lOX69mmI3 '111/ SOlE\'!

/ TOP Ri'Jl GW:D IN PlACE 10 POSI

•

AXONOMETRIC


DetaillF.1Interior Stair Guard Connection: Top/Bottom Rail Glued and Screwed to Post

Noles:1. Maximum permilled span is based on a slope belween 35' and 45' from the horizontal.2. Minimum section modulus of top rail shall be 24,000 mm', measured about the x-x axis.3. Pickets omilled on drawing, for clarity.4. DelaillC-1 or DelaiIIC-2, modified 10 suit 8 sloping application may be used for picket to rail connections.

MAXIMUM SPAN OF RAIL, MEASURED ALONG THE SLOPE

Pnge 34 • SB-7

Rail Species

Oak, Maple

Column 1

Maximum Span, m (ft.in)

4.30(14'-1")

2

2012 MMAH Supplementary Standard S8.7 f;.> Ontario

C).0-"-•-..•. '

()1 " "TO x 50 rrrn (2") SCIIDY/COJNTERSlJNJ( 6 rrrn (61161

PLAN

NEMl P05T NOlCIfED#I)GUJED 10 SlRlNG8l AND RJS8l

AXONOMETRIC

~I"o."r" "

JI10II10

/

3" "TOx 89 mm (3 'h1SC1lEWScaJNIElStR.IJ( 10 rrrn 13181

-- 28 mm (11/81SlAJRSTRI'lG8l

"'J IIo


()

O.

! ..'."'

Detail IG-1Interior Stair Guard Connection: Notched Post Glued & Screwed to Stringer & Riser

Notes:1. Stringer shaDbe oak or maple.2. Notch post 38 mm x 60 mm (l'/" x 2'/s') to fit over stair stringer,3, Only the first riser and tread are shown, for clarity.4, Minimum thickness of riser shall be 12 mm ('/,'),5, DetaillC.1 or Delail IC.2, modified to suit a sloping application may be used for pickel to rail connections,6, Dimensions sho'lll1 are in mm unless olherwise specified.

C'h;;~


Post Species Maximum Span, m (ft-ln)

Oak, Maple, Yellow Poplar, Hemlock, While Pine 3.30(10'-10')

Column 1 2

SB-7 • Page 35

2012 MMAH Supplementary Standard 58.7 POntariO

PLAN

(

80

lI

'#10 ,89 mm (3 Yo, SCREWCOUNTERSUNK 10 mm (:lIB')

/2 • 28 mm IT 118') STTlINGERSI W1TH SHOE

/I

i

'-------_ •..._------" i1 !

I

AXONOMETRIC

II,1 --- ••.•••••

u--------,°r'IIIIIIIIII

NEWEl POST"7 GWED 'N PlACE 10 SmlNGEJl

/,I

-3. #10, 89mm (3 'h,SCREWS/ COUNTERSll~K <s mm IT 3/41

"I III, ',', , ,Irt-I 101I I ,10' II , ,I 101,


DetaillG.2Interior Stair Guard Connection: Post Glued and Screwed to Stringer

Noles:1. StrInger shall be oak or maple.2. Only the firsl riser and tread are shown, for clarity.3. Minimum thickness of rIser shall be 12 mm (W).4. DelaillC-1 or DetaillC-2, modified 10 suil a sloping appncation may be used for pickel 10 rail connec~ons.5. Dimensions shown are in mm unless otherwise specified.


Posl Species Maximum Span, m (It.in)I. Oak, Maple, Yellow Poplar, Hemlock, While Pine 3.30 (10'.10')

Column 1 2

~..

~

( )

Page36 • 88-7

2012 MMAH Supplementary Standard S8.7 [;.>Ontario

~).r . - .,:t,,_._

38 mm(l WISTAIR SffilNGER

PLAN12.7 mm (14')GYPSUM BOARD

AXONOMETRIC

'-" 2-#10xS9mm(3Y.t")SCREWS

NEWEL POST GLUED IN PLACETO STRINGER AND WOOD STUD

•..• 3-#10x89mm(31,oSW), SCRE

x) ....--38x89(2'"x4')...____t- ~ WOOD STUDS (TYPICAL)

I

IIrI

-ld-

o


DetaillG.3Interior Stair Guard Connection: Post Glued and Screwed to Stringer and Stud Wall

Notes:I, Minimum thickness of riser shall be 12 mm (Yo').2. DetaillG-1 or DetaillG-2, modified to suit a sloping application may be used for picket to rail connections.3. Dimensions shown are 111 mm unless othei'Mse specified.

~O."'~'-'~"~-


Post Species

Oak, Maple, Yellow Poplar, Hemlock, White Pine

Column 1

Maximum Span, m (ft-in)

3.30 (10'-10')

2

SB-7 • Page 37


\lOWE NEl\B.FOsr

f'Ct<E1WIH OOVIB.SGum INFlACE"O lI£All-

PLANAXONOMETRIC

\{)W1E NBIIEL f'J5f/ GU.ID INFlACE'0 lI£All

/ / 12mm (W) aPM. S:f&\lCONNe::nRWlH/ 38 mm (1 W) DIA\t x 2 mm (3/32.) W6.S-ffi

'. '

19

FRONT ELEVATION

AV

<: >

,!. ' ..

SIDE ELEVATION

DetaillG-4Interior Stair Guard Connection: Oak or Maple Posl and Picket Volute

Notes:1. Maximum permilled span is measured from Ihe centre of the volute 10a post or other said support.2. Olher lop rail syslems may be used provided Ihal Ihe seclion modulus is nolless than 24,000 mm', measured about tile vertical axis.3 Newel post and pickets In Ihe volute shallbe oak or maple. See Table 3.1.2. for minimum sizes of pickets. .4. DelalllC-1 or DetaillC-2, modined to suit a sloping application may be used for pickel 10rail conneclions.5. Dimensions shown are in mm unless olherwise specified.

MAXIMUM SPAN OF RAIL, MEASURED ALONG THE SLOPE

Posl and Pickel Spedes Maximum Span, m (h.in)

Oak, Maple 4.30 (14'.1')

Column 1 . 2

Page 38 • SB-7

l', .....

2012 MMAH Supplementary Standard S8.7 fj;>Ontario

()

o~~..~.JE E E E

PLAN

"- 45 mm (1 314") BASESQUARE PICKETS WITH19 rom (314") DIAM, x 19 rom (314')DOWELS GLUED IN PLACE AXONOMETRIC

f\~J


DetaillG.5Interior Stair Guard Connection: Picket Volute, 260 mm (10'/:') Wide

Notes:",)" 1. Maximum permitted span is measured from the centre of the volute to a post or other solid support\,,. 2. Other lop rail systems may be used provided that the section modulus is not less than 24,000 mmJ, measured about the verticai axis,

3. see Table 3.1.2. for minimum sizes of pickets. '4, DelaillC.l or Delall IC-2, modified 10 suit a sloping applicaUon may be used for picket to rail conneclions.5, Dimensions shown are in mm unless otherwise specified.

() MAXIMUM SPAN OF RAIL

Pickel Species

Yellow Popiar, Hemlock, White Pine

Column 1

Maximum Span, m (fl.in)

1.80 (5'.11')

2

SB-7 • Page 39

2012 MMAH Supplementary Standard S8.7 P>Ontario

B,S/ B

~.I'/./

/ 45mm (l 3/4') BASEsa UARE PICKETS WITH19 mm (3/4') DIAM. x 19 mm (3/4')DOV;l;lS GlUED IN PLACE

PLAN AXONOMETRIC

,,,,


DetaillG-6Interior Stair Guard Connection: Picket Volute, 240 mm (9"2") Wide

Notes:1, Maximum permitted span is measured from lJle centre of the volute to a post or other solid support. l.2. Otlier top rail systems may be used provided lJlat Ihe section modulus is not less lJlan 24,000 mm'. measured aboullhe vertical axis.3. See Table 3.1.2. for minimum sizes of pickets.4. DetaillC,1 or DelaiIIC-2, modified to suit a sloping application may be used for pickel 10 rail oonnections.5. Dimensions shown are in mm unless otherwise specified,

MAXIMUM SPAN OF RAIL

Sp~cies Maximum Span, m (ft-in)

YeRow Poplar. Hemlock, White Pine 1.80 (5'-11")

Column I 2

Page 40 • SB-7

2012 MMAH Supplementary Standard 58-7 POntario

\45X 136lOP RAIl

45 )(255STIlI'IGE""

'"

PICKETS --- .,

2. #IOx50mm (T)SCREWS COUNTERSUNK6 mm (5I16.J

AXONOMETRIC

3-#10x50mm (21SCREW, COUNlffiSUNK6mm{5/161

PLAN

1.:...\, ,

o


DetaillH-1o Interior StaIr Guard Connection: Cantilevered Picket Screwed to Stair Stringer

Noles:1, Stair stringer shall be oak or maple,2, Provide a suitable post, return, or solid support at eacl1 end or the guard,3, See Table 3,1.2, for minimum sizes of pickets.o 4, Dimensions shown are In mm unless olherwise specified.

SB-7 • Page 41


2012

() Appendix A

MMAH Supplementary Standard 58.7 [?ontario

0",~.. -

Explanatory Material for 58.7

Appendix A 10 Ihis Supplemenlary Slandard is Included for explanalory purposes only and does nol form pari ofIhe requirements. The bold.faced reference numhers Ihat inlroduce each item apply to Ihe requirements in thisSupplementary Standard.

A.1.1.1. Scope. A guard constructed in conformance with this Supplementary Standard is deemed to satisfy therequirements of Sentence 9.8.8.8.(2) of Division B.

Guard design in this Supplementary Standard is based on a height of 1 070 mm and a maximum clear spacing of 100 mmbetween pickets or balusters.

A.1.1.1.(2) Guards located on the exterior of a building are subject to deterioration as a result ofhygrothermal,electrochemical or biochemical action.

A.1.2.1. Cantilever Action. Where guards incorporate wood posts that are continuous from the top of theguard to the ground, or where the tops of the posts are attached to a superstructure that is connected to the building, lbecantilever assumption in the Supplementary Standards is no longer valid. An example of a continuous post is shown inFigure A.1.2.1.

89 x 89 WOOD POSTCONTINUOUS FROMTOP OF FOOTINGTO TOP OF GUARD

DECK

iI}

GRADE

oFigura M.2.1.

Typical Continuous Post

SB-7 • Page 43


A-1.2.2. Classification. A Post and Rail System consists of a top rail that transfers horizontal loads to posts.The posts transfer the loads from the rail to the floor system, This system may incorporate a bottom rail that is anchored ateach end to the posts. Infill panels or infill pickets are installed between the top rail and the floor or bottom rail. Examplesof Post and Rail Systems are shown in Figure A-1.2.2.A.

The term "infill pickets" refers to an assembly of vertically oriented elements that span between the floor or bottom rail andthe top rail. For the purpose of,this Supplementary Standard, the words "picket" and "baluster" both relate to theseindividual elements .

. The spacing of the posts in a Post and Rail System is detailed in this Supplementary Standard and is dictated by the ability'ofthe posts to accept the design loeds. The maximum spanning capacity of the rails is often not realised because it isdictated by the post spacing.

A Cantilevered Picket System consists ofa top rail that transfers horizontal loads to pickets. The pickets transfer the loadsfrom the top rail to the floor system. An example of a Cantilevered Picket System is shown in Figure A-I.2.2.B.

A guard classified as a Post and Rail System or a Cantilevered Picket System need not always tenninate at a post if:(a) the top rail is connected adequately to all element capable of accepting the forces applied to it, or(b) the guard changes direction and the rails are adequately fastened at the return.

1l)r R"IL OSLY

Figure M.2.2.ATypical Post and Rail Systems

Figure M.2.2.BCantilevered Picket System

A.2.1.1. Lumber Grades. Whereas Northern Species is specified as the minimum lumber grade, Spruce-Pine-Fir, Douglas Fir-Larch and Hem-Fir may also be used since their structural properties exceed those of Northern Species.Cedar falls within the classification of Northern Species Group.

A.2.1.3. Floor Construction. The lateral loads acting on a guard are transferred from either the posts onhepickets to the floor system. Therefore, the floor system must be sufficiently strong to transfer these loads.

A.2.1.4. Connectors. Pre-drilling of wood elements may be required in order to avoid splitting of structuralwood elements. Where a glued joint is required, an adhesive confonning to CSA Standard 01 12.4-M 1977 (PolyvinylAdhesives for Wood) and CSA Standard 0 112.B-M 1977 (Polyvinyl Adhesives - Cross Linking, for Wood) is acceptable,

A.2.1.5. Decay-Resistant Lumber. Cedar.is a species considered resistant to decay.

Page 44 • SB-7

"'.- '

)

Documents

MMAH Supplementary Standard 58.7 Guards forHousing ...€¦ · (3) Guards located insideabuilding shallbeconstructed inconformance with Seclion2orSection 3ofthis Supplementary Standard