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IG Limited,Avondale Road,
Cwmbran,Gwent NP44 1XY
Tel: 01633 486486 Fax: 01633 486465E-mail: info@igltd.co.uk Website: www.igltd.co.uk
Sales Department Hotline: 01633 486460 Fax: 01633 486465Technical Department Hotline: 01633 486461 Fax: 01633 486495Specials Department Hotline: 01633 486449 Fax: 01633 486495
The information contained in this brochure was accurate at the date of going to press. The Company, however, reserves the right, while maintaining the essential
performance of the lintels described, to introduce at any time modifications and changes of details as may be considered necessary to improve the products described.
Every endeavour will be made to bring this brochure up-to-date at regular intervals, but in order to avoid any misunderstanding, any
person interested should enquire of the Company as to whether there have been any material alterations since the date of this publication.
IG Limited is part of the
NEW
IMPR
OVED
PROF
ILE CI/SfB(31.9)
April 2009
Xh2
Part of the
INTRODUCTION 2
CONTENTS 3
PRODUCT GUIDE 4-6
CAVITY WALL LINTELS
THE L1 PROFILE 7
STANDARD 50-70/70-95 CAVITY 8-9
95-110/110-150 CAVITY 10-11
WIDE INNER LEAF 50-70 CAVITY 12
70-95/95-110 CAVITY 13-14
WIDE OUTER LEAF 50-110 CAVITY 15
L1/E EAVES LINTELS 16
STANDARD & WIDE INNER 50-100 CAVITY 17
HEAVY DUTY LINTELS 50-110 CAVITY 18
EXTRA HEAVY DUTY LINTELS 50-110 CAVITY 19
TIMBER FRAME LINTELS 20
L7/50 TIMBER FRAME 40-55 CAVITY 21
L7/75 TIMBER FRAME 70-90 CAVITY 21
L8/50 CONCRETE INNER 50-65 CAVITY 21
SINGLE WALL LINTELS 22
L9/L10/L11 23
BOX LINTELS 24
STANDARD 75-200 24-25
HEAVY DUTY 100-200 26
INTERNAL LINTELS 27
LINTEL SOFFIT CLADDING 28
UNIVERSAL ARCH 28
STAINLESS STEEL LINTELS 29
SPECIAL LINTELS AND FAX BACK FORM 29-32
TECHNICAL INFORMATION 33-35
CAVITY TRAYS 36-37
KEYLITE ROOF WINDOWS 38-39
C O N T E N T S
3
LINTELLIGENCE
Forty years of successfully meeting the lintel needs
of specifiers and contractors has taught us to take
nothing for granted.
We have developed our comprehensive range of
standard lintels to ensure we cover all conventional
and timber frame constructions. The range is
continually evolving to take account of changing
building requirements such as higher standards of
insulation.
Investment in manufacturing enables us to meet a
growing need for lintels of non-standard design -
we established our special lintels department
specifically to satisfy those needs.
If our standard range does not provide the lintels
you require, we will design and manufacture lintels
to meet your specification.
Specifying lintels is not always straightforward, so
we provide a range of technical advice and support
services to make sure our lintels are always used
in the most effective and efficient manner. This
includes free lintel scheduling to help ease your
busy workload.
Product quality and consistency have always been
of prime importance - that is why we have always
ensured that our lintels meet all current standards
of performance and durability. To help make sure
that our lintels are as good tomorrow as they are
today, we have just updated our lintel factory with
the latest machinery.
Finally, we have also learnt that all the above is
only of value if our lintels are available when and
where you want them. So our network of specialist
distributors has been established to give you ready
availability throughout the UK.
Features
Benefits
2
• Standard lintels for all cavity wall constructions
• Standard lintels for timber frame construction
• Special lintels designed and manufactured tospecification
• Complete with insulation and plaster key
• Conform to all relevant Building Regulations
• Available in galvanised mild steel or stainless steel
• Technical advice and assistance readily available
• Free lintel scheduling
• Investment in manufacture to ensure consistent quality
• Continually evolving product range to meetchanging needs
• Available through a nationwide network of specialistdistributors
New Website
www.igltd.co.uk
Now that is lintelligence - only available from IG Lintels
LL11//SS 5500
Page 8
LL11//HHDD 5500
Page 8
LL11//XXHHDD 5500
Page 8
LL11//SS WWIILL 5500
Page 12
LL11//HHDD WWIILL 5500
Page 12
LL11//XXHHDD WWIILL 5500
Page 12
LL11//SS WWOOLL 5500
Page 15
LL11//EE 5500
Page 17
LL11//EE WWIILL 5500
Page 17
LL55//5500
Page 18
LL66//5500
Page 19
LL11//SS 7755
Page 9
LL11//HHDD 7755
Page 9
LL11//XXHHDD 7755
Page 9
LL11//SS WWIILL 7755
Page 13
LL11//HHDD WWIILL 7755
Page 13
LL11//XXHHDD WWIILL 7755
Page 13
LL11//SS WWOOLL 7755
Page 15
LL11//EE 7755
Page 17
LL55//7755
Page 18
LL66//7755
Page 19
LL11//SS 110000
Page 10
LL11//HHDD 110000
Page 10
LL11//XXHHDD 110000
Page 10
LL11//SS WWIILL 110000
Page 14
LL11//HHDD WWIILL 110000
Page 14
LL11//XXHHDD WWIILL 110000
Page 14
LL11//SS WWOOLL 110000
Page 15
LL55//110000
Page 18
LL66//110000
Page 19
STAN
DAR
D
(also
availabl
e as
Ste
pped
Lin
tels)
WID
E IN
NER
BLO
CK/B
RIC
K(a
lso
availabl
e as
Ste
pped
Lin
tels)
WID
E O
UTE
RBL
OCK
/STO
NE
STAN
DAR
DST
AND
ARD
For standard duty loading conditions only
N.B. *Upstand to be positioned tight to inner block. Maximum overhang 25mm on either flangeFOR INSULATED BONDED BLOCK ARRANGEMENTS CONTACT TECHNICAL DEPARTMENT
BL
OC
K
SI
ZE
50 60 70 80 95 100 105 110 130 150
100 L1/S 50 L1/S 50 L1/S 75 L1/S 75 L1/S 100 L1/S 100 L1/S 100 L1/S 110 L1/S 130 L1/S 150
115 L1/S 50 L1/S 50 L1/S 75 L1/S 75 L1/S 100 L1/S 100 L1/S 100 L1/S 110 L1/S 130 L1/S 150
125 *L1/S 50/ L1/S WIL 50 *L1/S 75/ L1/S WIL 75 L1/S 100 L1/S WIL 100 L1/S WIL 100 *L1/S 110/ *L1/S 130/ *L1/S 150/L1/S WIL 50 L1/S WIL 75 L1/S WIL 110 L1/S WIL 130 L1/S WIL 150
130 L1/S WIL 50 L1/S WIL 50 L1/S WIL 75 L1/S WIL 75 L1/S WIL 100 L1/S WIL 100 L1/S WIL 100 L1/S WIL 110 L1/S WIL 130 L1/S WIL 150
140 L1/S WIL 50 L1/S WIL 50 L1/S WIL 75 L1/S WIL 75 L1/S WIL 100 L1/S WIL 100 L1/S WIL 100 L1/S WIL 110 L1/S WIL 130 L1/S WIL 150
150 *L1/S WIL 50 *L1/S WIL 50 *L1/S WIL 75 *L1/S WIL 75 *L1/S WIL 100 *L1/S WIL 100 *L1/S WIL 100 *L1/S WIL 110 *L1/S WIL 130 *L1/S WIL 150
190 WIL 50/200 WIL 50/200 WIL 75/200 WIL 75/200 WIL 100/200 WIL 100/200 WIL 100/200 WIL 110/200 WIL 130/200 WIL 150/200
215 WIL 50/200 WIL 50/200 WIL 75/200 WIL 75/200 WIL 100/200 WIL 100/200 WIL 100/200 WIL 110/200 WIL 130/200 WIL 150/200
C A V I T Y S I Z E ( C l e a r )
L INTELS SELECTION CHART
54
EAVE
S
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
CAVITY WALL LINTELS cont.
LL77//5500
Page 21
LL11//SS 111100
Page 11
LL77//7755
Page 21
LL11//SS 113300
Page 11
LL88//5500
Page 21
LL11//SS 115500
Page 11
WID
ER C
AVIT
IES
TYPE LOAD 40-55 CAVITY 70-90 CAVITY 50-65 CAVITY
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100
L6/100
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100
L6/75
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100L6/75
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
TIM
BER
FR
AME
CON
CRET
E IN
NER
L1/S 50
L1/HD 50
L1/XHD 50
L1/S 75
L1/HD 75
L1/HD 75
L1/S 100
L1/HD 100
L1/HD 100
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
L1/S WIL 100
L1/HD WIL 100
L1/HD WIL 100
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL L1/E 50
L1/E 75
L1/E WIL50
L7/75
L1/S 110
L1/S 130
L1/S 150L8/50
L7/50
Standard
Standard
TYPE LOAD 110 CAVITY 130 CAVITY 150 CAVITY
The tables on these pages provide the specifier with a quick
guide to IG’s range of steel lintels.
Lintels are identified by type, loading characteristics and cavity
widths with reference to the appropriate page for full details.
Before consulting tabular information, specifiers are advised
to read the Technical Information pages 33-35 to verify
that properties and installation of IG steel lintels meet the
requirements of intended usage.
Standard
Heavy
Duty
Extra
Heavy
Duty
Standard
Heavy
Duty
Extra
Heavy
Duty
Standard
Standard
Heavy
Duty
Extra
Heavy
Duty
CAVITY WALL LINTELS
PRODUCT GUIDE
TYPE LOAD 50-70 CAVITY 70-95 CAVITY 95-110 CAVITY
MITRED LINTEL Page 31
ARCHES Page 28
6
Cavity Wall LintelsThe L1 Profile
7
L1 type lintels have a ‘top hat’ profile which offers distinctadvantages in terms of durability and structural characteristicsincluding:
The maintenance of the integrity of the wall structure and itsthermal properties through uniform and continuous bricklaying -the upstand of the lintel sits within the cavity;
Excellent thermal efficiency as a direct result of its design which,with the addition of an expanded polystyrene infill (standard onallL1 lintels), provides a ‘U’ value through the lintel ofsignificantly less than 0.33 W/m2 K;
Reduced maintenance costs through the elimination of crackedplaster due to the differential expansion of dissimilar materialsassociated with Box section lintels.
Semi-pierced slots on the inner flange give an excellent key for theplaster finish.
Expandedpolystyrene
Easy curtainbracket fixing.No battenrequired
Indentedflange forplaster key
Plaster keyacross cavity
dpc
SINGLE WALL Page 23 INTERNAL Page 27BOX LINTELS Page 24-25
NON-CAVITY WALL LINTELS
6644 && 110000LL99 LL1100 LL1111 BBOOXX 7755 BBOOXX 110000 BBOOXX 114400 BBOOXX 220000
SPECIAL LINTELS Pages 29-32
LINTEL SOFFIT CLADDING
UNIVERSAL ARCHES
RADIUS PLAN LINTEL Page 32ARCH LINTEL Page 30
L8/50
L7/50
L10 L11
L11L9
L8/50
L7/50
L10 L11
L11L9
L8/50
L7/50
L10 L11
L11L9
Where lintel requirements cannot be met from the standard range, please refer to our Special Lintels Service on page 29.
SOFFIT CLADDING Page 28 CAVITY TRAYS Page 36
STAINLESS STEEL LINTELS
CAVITY TRAYS
STAINLESS STEEL LINTELS Page 29
High PerformanceLintels for harshenvironments
A uniquesingle elementcavity tray system
C A V I T Y W A L L L I N T E L S 70-95 mmC A V I T Y
8
L1/S 75
L1/HD 75
L1/HD 75
‘h’ nominal
1006895
Height ‘h’ 98 89 106 130 142 168 204 204 204
Thickness ‘t’ 1.6 1.8 2 2 2 2.5 2.9 2.9 3.2
Total UDL(kN) Load ratio (1) 12 14 18 21 21 27 27 26 27
Total UDL(kN) Load ratio (2) 10 12 14 17 19 22 20 19 22
LL11//SS 7755 Manufactured Length 0600 1350 1650 1950 2250 2550 3150 3750 4200150mm increments 1200 1500 1800 2100 2400 3000 3600 4050 4800
For 70-95mm cavity wallconstruction.Standard duty loading condition.
Height ‘h’ 103 117 167 205 205 205 205
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 30 30 40 40 40 35 33
Total UDL(kN) Load ratio (2) 22 22 35 35 35 32 28
LL11//HHDD 7755 Manufactured Length 0600 1350 1650 2250 2700 3150 3750150mm increments 1200 1500 2100 2550 3000 3600 4200
For 70-95mm cavity wallconstruction.Heavy duty loading condition.L1/S 75
L1/HD 75
L1/HD 75
‘h’ nominal
1006895
Height ‘h’ 167 167 205
Thickness ‘t’ 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 50 50 55
Total UDL(kN) Load ratio (2) 45 45 45
LL11//XXHHDD 7755 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 70-95mm cavity wallconstruction.Extra heavy duty loading condition.
L1/S 75
L1/HD 75
L1/HD 75
‘h’ nominal
1006895
9
50-70 mmC A V I T Y
C A V I T Y W A L L L I N T E L S
L1/S 50
L1/HD 50
L1/XHD 50
Height ‘h’ 79 98 110 134 150 172 172 209 209 209
Thickness ‘t’ 1.6 1.8 2 2 2 2 2.5 2.9 2.9 3.2
Total UDL (kN) Load ratio (1) 12 14 19 21 21 26 27 27 26 27
Total UDL (kN) Load ratio (2) 10 12 16 17 19 22 20 20 19 22
LL11//SS 5500 Manufactured Length 0600 1350 1650 1950 2250 2550 2850 3150 3750 4200150mm increments 1200 1500 1800 2100 2400 2700 3000 3600 4050 4800
For 50-70mm cavity wallconstruction.Standard duty loading condition.
‘h’ nominal
1004895
LL11//HHDD 5500 Manufactured Length 0600 1350 1650 2250 2700 3150 3750150mm increments 1200 1500 2100 2550 3000 3600 4200
For 50-70mm cavity wallconstruction.Heavy duty loading condition.
L1/S 50
L1/HD 50
L1/XHD 50
1004895
‘h’ nominal
Height ‘h’ 171 171 209
Thickness ‘t’ 3.2 3.2 3.2
Total UDL (kN) Load ratio (1) 50 50 55
Total UDL (kN) Load ratio (2) 45 45 45
LL11//XXHHDD 5500 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 50-70mm cavity wallconstruction.Extra heavy duty loading condition.
L1/S 50
L1/HD 50
L1/XHD 50
1004895
‘h’ nominal
Height ‘h’ 105 121 171 209 209 209 209
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2 3.2 3.2
Total UDL (kN) Load ratio (1) 30 30 40 40 40 35 33
Total UDL (kN) Load ratio (2) 22 22 35 35 35 32 28
All above Lintels have continuous bottom plates. All above Lintels have continuous bottom plates.
All above Lintels have continuous bottom plates. Heavy duty and Wider Inner Leaf variants available.
C A V I T Y W A L L L I N T E L S 110-150 mmC A V I T Y
1110
Height ‘h’ 95 121 145 195 195 195
Thickness ‘t’ 2 2 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 16 22 24 27 26 25
Total UDL(kN) Load ratio (2) 13 18 18 22 19 20
LL11//SS 111100 Manufactured Length 0600 1650 1950 2250 3150 4200150mm increments 1500 1800 2100 3000 4050 4800
For 110-125mm cavity wallconstruction.Standard duty loading condition.
Height ‘h’ 103 128 190 190 190 190
Thickness ‘t’ 2 2 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 16 22 24 27 26 25
Total UDL(kN) Load ratio (2) 13 18 18 22 19 20
LL11//SS 113300 Manufactured Length 0600 1650 1950 2550 3150 4200150mm increments 1500 1800 2100 3000 4050 4800
For 130-145mm cavity wallconstruction.Standard duty loading condition.
Height ‘h’ 100 125 180 180 180 180
Thickness ‘t’ 2 2 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 16 22 24 27 26 25
Total UDL(kN) Load ratio (2) 13 18 18 22 19 20
LL11//SS 115500 Manufactured Length 0600 1650 1950 2250 3150 4200150mm increments 1500 1800 2100 3000 4050 4800
Load Ratio - see Structural Performance on page 33.
For 150-165mm cavity wallconstruction.Standard duty loading condition.
‘h’
nominal
10010895
‘h’
nominal
10012895
‘h’
nominal
10014895
95-110 mmC A V I T Y
C A V I T Y W A L L L I N T E L S
Height ‘h’ 88 88 107 125 150 162 171 200 200 200
Thickness ‘t’ 1.6 1.8 2 2 2 2.5 2.5 2.9 2.9 3.2
Total UDL(kN) Load ratio (1) 12 16 19 21 23 27 27 27 26 27
Total UDL(kN) Load ratio (2) 10 13 16 17 18 22 20 20 19 22
LL11//SS 110000 Manufactured Length 0600 1350 1650 1950 2250 2550 2850 3150 3750 4200150mm increments 1200 1500 1800 2100 2400 2700 3000 3600 4050 4800
For 95-110mm cavity wallconstruction.Standard duty loading condition.
Height ‘h’ 110 135 163 203 203 203 203
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 30 30 40 40 40 35 33
Total UDL(kN) Load ratio (2) 22 22 35 35 35 32 28
LL11//HHDD 110000 Manufactured Length 0600 1350 1650 2250 2700 3150 3750150mm increments 1200 1500 2100 2550 3000 3600 4200
For 95-110mm cavity wallconstruction.Heavy duty loading condition.
Height ‘h’ 163 163 203
Thickness ‘t’ 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 50 50 55
Total UDL(kN) Load ratio (2) 45 45 45
LL11//XXHHDD 110000 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 95-110mm cavity wallconstruction.Extra heavy duty loading condition.
L1/S 100
L1/HD 100
L1/HD 100
1008895
L1/S 100
L1/HD 100
L1/HD 100
L1/S 100
L1/HD 100
L1/HD 100
‘h’nominal
1008895
1008895
‘h’nominal
‘h’nominal
All above Lintels have continuous bottom plates.
All above Lintels have continuous bottom plates. All above Lintels have continuous bottom plates.
W I D E I N N E R L E A F
1312
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
1256895
Height ‘h’ 101 90 110 134 158 167 192 192
Thickness ‘t’ 2 2 2 2 2 2.5 3.2 3.2
Total UDL(kN) Load ratio (1) 12 13 20 19 24 27 30 27
Total UDL(kN) Load ratio (2) 10 11 17 17 20 21 26 25
LL11//SS WWIILL 7755 Manufactured Length 0600 1500 1950 2250 2550 3150 3750150mm increments 1350 1650 1800 2100 2400 3000 3600 4200
For 70-95mm cavity wallwith wide inner block/brick construction.Standard duty loading condition.
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
1256895
Height ‘h’ 130 155 192 192
Thickness ‘t’ 2.9 2.9 2.9 3.2
Total UDL(kN) Load ratio (1) 20 25 30 36
Total UDL(kN) Load ratio (2) 17 22 25 32
LL11//HHDD WWIILL 7755 Manufactured Length 0600 135 0 1950 2250150mm increments 1200 1800 2100 2700
For 70-95mm cavity wallwith wide inner block/brick construction.Heavy duty loading condition.
L1/S WIL 75
L1/HD WIL 75
L1/HD WIL 75
1256895
Height ‘h’ 157 192 192
Thickness ‘t’ 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 45 45 50
Total UDL(kN) Load ratio (2) 40 40 40
LL11//XXHHDD WWIILL 7755 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 70-95mm cavity wallwith wide inner block/brick construction.Extra heavy duty loading condition.
70-95 mmC A V I T Y
‘h’nominal
‘h’nominal
‘h’nominal
Height ‘h’ 96 110 136 162 172 196 196
Thickness ‘t’ 2 2 2 2 2.5 3.2 3.2
Total UDL(kN) Load ratio (1) 12 15 20 24 28 30 27
Total UDL(kN) Load ratio (2) 10 13 18 20 21 26 25
LL11//SS WWIILL 5500 Manufactured Length 0600 1650 1950 2250 2550 3150 3750150mm increments 1500 1800 2100 2400 3000 3600 4200
For 50-70mm cavity wallconstruction.Standard duty loading condition.
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
1254895
Height ‘h’ 95 109 161 161 200
Thickness ‘t’ 2.9 2.9 2.9 2.9 3.2
Total UDL(kN) Load ratio (1) 20 25 35 30 36
Total UDL(kN) Load ratio (2) 17 22 27 25 32
LL11//HHDD WWIILL 5500 Manufactured Length 0600 1350 1650 1950 2250150mm increments 1200 1500 1800 2100 2700
For 50-70mm cavity wallconstruction.Heavy duty loading condition.L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
1254895
Height ‘h’ 161 196 196
Thickness ‘t’ 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 45 45 50
Total UDL(kN) Load ratio (2) 40 40 40
LL11//XXHHDD WWIILL 5500 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 50-70mm cavity wallconstruction.Extra heavy duty loading condition.
L1/S WIL 50
L1/HD WIL 50
L1/HD WIL 50
1254895
‘h’nominal
‘h’nominal
‘h’nominal
W I D E I N N E R L E A F 50-70 mmC A V I T Y
W I D E O U T E R L E A F 50-110 mmC A V I T Y
14
Height ‘h’ 93 110 162 200 200 200
Thickness ‘t’ 2.5 2.5 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 14 15 23 30 32 30
Total UDL(kN) Load ratio (2) 11 13 18 22 30 26
LL11//SS WWOOLL 5500 Manufactured Length 0600 1500 1800 2250 2850 3150150mm increments 1350 1650 2100 2700 3000 3600
For 50-70mm cavity wallconstruction with wide outermasonry.Standard duty loading.
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL
10048125
150 max
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL
10088125
150 max
Height ‘h’ 93 110 162 200 200 200
Thickness ‘t’ 2.5 2.5 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 14 15 23 30 32 30
Total UDL(kN) Load ratio (2) 11 13 18 22 30 26
LL11//SS WWOOLL 7755 Manufactured Length 0600 1500 1800 2250 2850 3150150mm increments 1350 1650 2100 2700 3000 3600
For 70-95mm cavity wallconstruction with wide outermasonry.Standard duty loading.
L1/S 75 WOL
L1/S 100 WOL
L1/S 50 WOL
10068125
150 max
Height ‘h’ 93 110 162 200 200 200
Thickness ‘t’ 2.5 2.5 2.5 2.9 3.2 3.2
Total UDL(kN) Load ratio (1) 14 15 23 30 32 30
Total UDL(kN) Load ratio (2) 11 13 18 22 30 26
LL11//SS WWOOLL 110000 Manufactured Length 0600 1500 1800 2250 2850 3150150mm increments 1350 1650 2100 2700 3000 3600
Load Ratio - see Structural Performance on page 33.
For 95-110mm cavity wallconstruction with wide outermasonry.Standard duty loading.
‘h’nominal
‘h’nominal
‘h’nominal
All above Lintels have continuous bottom plates. Heavy duty and Wider Inner Leaf variants available.
15
95-110 mmC A V I T Y
W I D E I N N E R L E A F
Height ‘h’ 92 107 150 177 188 188
Thickness ‘t’ 2 2 2 2.5 3.2 3.2
Total UDL(kN) Load ratio (1) 13 17 23 24 30 27
Total UDL(kN) Load ratio (2) 11 14 18 18 26 25
LL11//SS WWIILL 110000 Manufactured Length 0600 1350 1950 2550 3150 3750150mm increments 1200 1800 2400 3000 3600 4200
For 95-110mm cavity wallwith wide inner block/brick construction.Standard duty loading condition.
1258895
Height ‘h’ 113 150 188 188
Thickness ‘t’ 2.9 2.9 2.9 3.2
Total UDL(kN) Load ratio (1) 20 25 30 36
Total UDL(kN) Load ratio (2) 17 22 25 32
LL11//HHDD WWIILL 110000 Manufactured Length 0600 1500 1950 2250150mm increments 1350 1800 2100 2700
For 95-110mm cavity wallwith wide inner block/brick construction.Heavy duty loading condition.
1258895
Height ‘h’ 165 188 188
Thickness ‘t’ 3.2 3.2 3.2
Total UDL(kN) Load ratio (1) 45 45 50
Total UDL(kN) Load ratio (2) 40 40 40
LL11//XXHHDD WWIILL 110000 Manufactured Length 0600 1650 1950150mm increments 1500 1800 2100
Load Ratio - see Structural Performance on page 33.
For 95-110mm cavity wallwith wide inner block/brick construction.Extra heavy duty loading condition.
1258895
‘h’nominal
‘h’nominal
‘h’nominal
All above Lintels have continuous bottom plates.
L1/E lintels are designed to provide support over
openings at eaves level.
To achieve the loading figures indicated on the
opposite page, the lintel must be built in with the
blockwork as shown, and a continuous wall plate
must be provided over the opening and reveals.
The loading figures are achieved by using composite
action of the inner leaf blockwork.
Providing the maximum cavity width for the
appropriate lintel is maintained the outer flange
will have a brickwork bearing of 13mm.
The lintels must be ‘built in’ with the blockwork
positioned against the upstand of the lintel
together with a continuous wall plate as shown.
L1/E Eaves Lintels
L 1 / E - S T A N D A R D A N D I N N E R L E A F 50-100 mmC A V I T Y
1716
Expandedpolystyrene
Easy curtainbracket fixing.No battenrequired
Indentedplaster key
Plaster keyacross cavity
Height ‘h’ 95 134 150 150
Thickness ‘t’ 2 2 2 2.5
Total UDL(kN) 18 20 22 25
Note: Maximum block dimensions 125mm (80mm cavity)
LL11//EE 5500 Manufactured Length 0600 1650 2250 2550150mm increments 1500 2100 2400 2700
For 50-80mm (max) cavity wallconstruction. For use at eaveslevel. Composite beam withblockwork
L1/E 50
L1/E 75
L1/E WIL50
‘h’ nominal
1004845
Height ‘h’ 95 134 150 150
Thickness ‘t’ 2 2 2 2.5
Total UDL(kN) 18 20 22 25
Note: Maximum block dimensions 125mm (100mm cavity)
LL11//EE 7755 Manufactured Length 0600 1650 2250 2550150mm increments 1500 2100 2400 2700
For 70-100mm (max) cavity wallconstruction. For use at eaveslevel. Composite beam withblockwork
Height ‘h’ 91 136 136 150
Thickness ‘t’ 2 2 2.5 2.5
Total UDL(kN) 18 20 25 20
Note: Maximum block dimensions 150mm (80mm cavity)
LL11//EE WWIILL 5500 Manufactured Length 0600 1650 2250 2550150mm increments 1500 2100 2400 2700
Load Ratio - see Structural Performance on page 33.
For 50-80mm (max) cavity wallconstruction. For use at eaveslevel. Composite beam with wideinner leaf blockwork
L1/E 50
L1/E 75
L1/E WIL50
1254845
‘h’ nominal
L1/E 50
L1/E 75
L1/E WIL50
1006845
‘h’ nominal
All above Lintels have continuous bottom plates.
Height ‘h’ 229 229 229 229 229
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2
Total UDL(kN) Load ratio 19:1 70 60 50 45 40
Note: Maximum block dimensions 125mm (70mm cavity)
LL55//7755 Manufactured Length 0600 1650 2250 3150 4200150mm increments 1500 2100 3000 4050 4800
For 70-95mm cavity wallconstruction.Heavy duty loading condition.
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100
1006895
Height ‘h’ 229 229 229 229 229
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2
Total UDL(kN) Load ratio 19:1 70 60 50 45 40
Note: Maximum block dimensions 125mm (50mm cavity)
LL55//5500 Manufactured Length 0600 1650 2250 3150 4200150mm increments 1500 2100 3000 4050 4800
For 50-70mm cavity wallconstruction.Heavy duty loading condition.
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100
1004895
Height ‘h’ 229 229 229 229 229
Thickness ‘t’ 2.9 2.9 2.9 3.2 3.2
Total UDL(kN) Load ratio 19:1 70 60 50 45 40
Note: Maximum block dimensions 125mm (95mm cavity)
LL55//110000 Manufactured Length 0600 1650 2250 3150 4200150mm increments 1500 2100 3000 4050 4800
Load Ratio - see Structural Performance on page 33.
For 95-110mm cavity wallconstruction.Heavy duty loading condition.
Extra Heavy Duty Lintels50-110 mmC A V I T YHeavy Duty Lintels 50-110 mm
C A V I T Y
1918
End bearing 200 200 200 200 200 200
Total allowable UDL (kN) 86 75 70 65 60 55
Note: Maximum block dimensions 125mm positioned flush with inner face of Universal Beam (70mm cavity)
LL66//7755 Manufactured Length 0600 5200 5400 5800 6200 6600150mm increments 4800
For large span 70-90mm cavity wallconstruction.Extra heavy duty loading condition.
End bearing 200 200 200 200 200 200
Total allowable UDL (kN) 86 75 70 65 60 55
Note: Maximum block dimensions 125mm positioned flush with inner face of Universal Beam (50mm cavity)
LL66//5500 Manufactured Length 0600 5200 5400 5800 6200 6600150mm increments 4800
For large span 50-70mm cavity wallconstruction.Extra heavy duty loading condition.
End bearing 200 200 200 200 200 200
Total allowable UDL (kN) 86 75 70 65 60 55
Note: Maximum block dimensions 125mm positioned flush with inner face of Universal Beam (95mm cavity)
LL66//110000 Manufactured Length 0600 5200 5400 5800 6200 6600150mm increments 4800
For large span 95-110mm cavity wall construction.Extra heavy duty loading condition.
L6/75
L6/75
L6/100
‘h’ nominal
‘h’ nominal
L5
L5/75L6/75
L5/50
L5/75
L6
L6/100 L5/100
1008895
‘h’ nominal
All above Lintels have continuous bottom plates. Heavy duty variants available.
207
245
207
265
207
285
Manufactured from a 203 x 133 x 30kg/m Universal Beam, with external galvanised outer flange and galvanised base plate.
Manufactured from a 203 x 133 x 30kg/m Universal Beam, with external galvanised outer flange and galvanised base plate.
Manufactured from a 203 x 133 x 30kg/m Universal Beam, with external galvanised outer flange and galvanised base plate.
Designed for use in timber frame construction, theL7 lintel provides support to the outer leaf tobrickwork over openings.
To achieve the loading figures shown, the L7 lintelmust be secured with restraining clips and a block/batten (not supplied) must be used to preventlateral deflection (twist) during the building stage.A single block/batten 300mm long at mid span willbe sufficient. Restraining clips should be fixed with3.3 x 50mm galvanised nails at no more than 500mmcentres each side of mid span.
Clips should be positioned with their vertical centresat the top of the lintel to allow for lintel movementand shrinkage of timber frame.
Timber Frame Lintels
L 7 - T I M B E R F R A M E
L 8 - C O N C R E T E I N N E R L I N T E L
2120
Retaining clipdpc
38mmtimberblock (notsupplied)
Height ‘h’ 110 110 135 185 250
Thickness ‘t’ 2.0 2.5 2.5 2.8 3.0
Total Allowable UDL (kN) 4 5 5 9 12
LL77//5500 Manufactured Length 0600 1350 1950 2550 3750150mm increments 1200 1800 2400 3600 4800
Heavy duty and wider cavity variants available.
For 45-55mm cavity timber frameconstruction. Wider or narrowercavity lintels are available but notstocked. Information on request.
L8/50
L7/50
L10 L11
L11 L9
‘h’ nominal
40
2523
95
Height ‘h’ 150 225 225 225
Thickness ‘t’ 2.5 2.5 2.9 3.2
Total Allowable UDL (kN) 7 8 10 12
Note; When specifying check height dimensions
LL88//5500 Manufactured Length 0600 2250 2550 3150150mm increments 2100 2400 3000 4800
Wider cavity variants available.
For 50-65mm cavity wallconstruction. For use with concretelintels. Wider or narrower cavitylintels are available but not stocked.Information on request.
L8/50
L7/50
L10 L11
L11 L9
404895
50-65 mmC A V I T Y
‘h’ nominal
L 7 - T I M B E R F R A M E
Height ‘h’ 165 165 240 315
Thickness ‘t’ 2.0 2.5 3.0 3.0
Total Allowable UDL (kN) 9 12 12 12
LL77//7755 Manufactured Length 0600 1950 2550 3750150mm increments 1800 2400 3600 4800
Wider cavity variants available.
For 70-85mm cavity timber frameconstruction. Wider or narrowercavity lintels are available but notstocked. Information on request.
L8/50
L7/50
L10 L11
L11 L9
6895
70-85 mmC A V I T Y
45-55 mmC A V I T Y
‘h’ nominal
2540
IG Single Wall Lintels are for the support of loadsfrom half-brick to full brick widths in solid brick orblock wall construction.
The L9 Lintel allows the face of brickwork to showon both sides of an opening in a full brick-wide wall.
Meter Box Lintel, L10 and L11 lintels allow theface of the brickwork to show on one side of anopening in half-brick wide constructions.
Meter Box Lintel lengths from 750-1350mm inincrements of 150mm.
Single skin lintels should always be propped.NHBC guidelines propose no greater than a 1m spanfor props during construction.
Single Wall Lintels
S I N G L E W A L L L I N T E L S
2322
Face brickwork
L10 lintel
Architrave
Door lining
Door stop
Door
Height ‘h’ 60 110 210 210
Thickness ‘t’ 3.0 3.0 2.8 3.0
Total Allowable UDL (kN) 4 8 10 6
Note: This Lintel must be propped during construction.
LL1100 Manufactured Length 0600 1350 1950 2850150mm increments 1200 1800 2700 3000
For use with single 102mm brickwork wall construction.Light duty loading condition.
L8/50
L7/50
L10 L11
L11 L9
95
‘h’ nominal
Height ‘h’ 150 225 225 225
Thickness ‘t’ 2.5 2.5 2.9 3.2
Total Allowable UDL (kN) 16 20 12 12
Note: This Lintel must be propped during construction.
LL1111 Manufactured Length 0600 1950 2550 2850150mm increments 1800 2400 2700 3600
To achieve loading figures indicated, lintel must be built-in with brickwork/blockwork as shown. In addition, it must be suitably restrainedduring construction. Heavier duty variants available.
For use with single leaf face brickor block wall.
L8/50
L7/50
L10 L11
L11 L9
150
95
L8/50
L7/50
L10 L11
L11 L9
225
95
Height ‘h’ 55 86 86 113
Thickness ‘t’ 2.5 2.5 2.9 3.2
Total Allowable UDL (kN) 6 8 8 10
Note: This Lintel must be propped during construction.
LL99 Manufactured Length 0600 1350 1800 2250150mm increments 1200 1650 2100 2700
For use with solid brick or blockwall construction.Light duty loading condition.
L8/50
L7/50
L10 L11
L11 L9
‘h’ nominal
200
Heavy duty and wider masonry variants available.
Heavy duty and wider masonry variants available.
Heavy duty and wider masonry variants available.
Box lintels are designed foruse over internal or externalopenings, or when tile hangingis required with solid brick orblock wall construction, or ateaves level.
Box Lintels
B O X L I N T E L S - S T A N D A R D
2524
75-215 mmB L O C K W O R K
95
Height ‘h’ 75mm wide 100 100Height ‘h’ 100mm wide 75 75
Thickness ‘t’ 1.6 2.0
Total allowable UDL (kN) 15 10
BBOOXX 7755 Manufactured Length 0600150mm increments 1650 1800
For internal openings,75 blockwork or100 blockwork.
95
Height ‘h’ 75 150 150 150 215 215 215
Thickness ‘t’ 2 1.6 2 2 2.5 2.5 2.5
Total allowable UDL (kN) 18 18 25 20 30 25 20
BBOOXX 110000 Manufactured Length 0600 1650 1950 2550 2850 3750 4350150mm increments 1500 1800 2400 2700 3600 4200 4800
For internal openings, eaves or100 block and tile hanging.
200
‘h’ nominal
Height ‘h’ 150 150 150 150 215 215 215
Thickness ‘t’ 1.6 2 2 2 2.5 2.5 2.5
Total allowable UDL (kN) 15 30 25 20 35 30 25
BBOOXX 114400 Manufactured Length 0600 1650 2250 2550 2850 3750 4350150mm increments 1500 2100 2400 2700 3600 4200 4800
For internal openings, eaves or140/150 block and tile hanging.
‘h’ nominal
145
Height ‘h’ 150 150 150 215 215 215
Thickness ‘t’ 1.6 2 2 2.5 2.5 2.5
Total allowable UDL (kN) 18 25 20 30 25 20
BBOOXX 220000 Manufactured Length 0600 1950 2550 2850 3750 4350150mm increments 1800 2400 2700 3600 4200 4800
For internal openings, eaves or215 block and tile hanging.
Care should be taken to avoid shock loading when used with concrete floor or other heavy units.Insulation available at extra cost.
NOTE: The Flange of the Box 200 (or HD Box 200) is designed to support a nominal masonry load only, up to a maximum of 3kN/m run.
75
Perforated steel for plaster key
75
‘h’ nominal
95
Perforated steel for plaster key
Perforated steel for plaster key
Perforated steel for plaster key
100-215 mmB L O C K W O R K
B O X L I N T E L S - H E A V Y D U T Y
26
Height ‘h’ 150 150 215
Thickness ‘t’ 2.5 2.5 2.5
Total allowable UDL (kN) 50 45 40
HHDD BBOOXX 114400 Manufactured Length 0600 1350 1950150mm increments 1200 1800 2700
For internal openings, eaves or140/150 block and tile hanging.
‘h’ nominal
145
Height ‘h’ 150 150 215
Thickness ‘t’ 2.5 2.5 2.5
Total allowable UDL (kN) 50 45 40
HHDD BBOOXX 220000 Manufactured Length 0600 1350 1950150mm increments 1200 1800 2700
In some circumstances these lintels may have an expanded metal lathing attached and may differ from the diagram shown.
Care should be taken to avoid shock loading when used with concrete floor or other heavy units.Insulation available at extra cost
NOTE: The Flange of the Box 200 (or HD Box 200) is designed to support a nominal masonry load only, up to a maximum of 3kN/m run.
For internal openings, eaves or215 block and tile hanging.
‘h’ nominal
‘h’ nominal
95
Height ‘h’ 150 150 215
Thickness ‘t’ 2.5 2.5 2.5
Total allowable UDL (kN) 50 45 40
HHDD BBOOXX 110000 Manufactured Length 0600 1350 1950150mm increments 1200 1800 2700
For internal openings, eaves or100 block and tile hanging.
Designed to provide a quick and safemethod of spanning small openings(up to 1000mm) in internal walls, IGinternal lintels are both economicaland easy to store, carry and use.
When a minimum height of 152mm ofbrick/blockwork with well-filled jointsof cement mortar is built over the lintel,the construction will be load-bearingfor normal domestic building purposesafter curing. The loading capacity of thelintel can be increased by increasingthe height of the walling built across it.
Internal Lintels64 & 100
27
900 700 64 - 5
1050 850 64 - 5
1100 900 64 - 5
1200 1000 64 - 5
900 700 100 5 7
1050 850 100 5 7
1100 900 100 5 7
1200 1000 100 5 7
Safe Safe Overall Maximum Width of distributed distributed
Length of span of IG Lintel loading with loading withIG Lintel opening unit 152mm coursing 229mm coursing
of 100mm thick of 75/100mm thick walling above walling above
lintel unit lintel unit
IINNTTEERRNNAALL 6644 && 110000
INT
100
(G79
0)IN
T 64
(G78
0)CA
D C
OD
ES
RenderingPlaster facing
28
Door stopstopDoor
Door liner
Architrave
100mm lintel
100
Perforated steel for plaster key
Perforated steel for plaster key
200
Perforated steel for plaster key
28
Stainless Steel LintelsHigh Performance for harsh environments
29
Special Lintel Enquiry Fax BackPlease complete and fax back the form overleaf...
IG’s Special Lintel Service is the product of awide experience in successfully meeting theneeds of architects of both domestic andcommercial buildings. It embraces everyaspect of lintel design and supply, fromcalculation of shape, size and loading to co-ordination with construction schedulingand consideration of budgetaryrequirement. IG’s ultimate aim is to providethe most cost-effective design solution tospecial lintel problems.
In order to best utilise this free service,please ensure that all relevant details areprovided i.e. wall construction (outer leaf,cavity, inner leaf), clear spans, arch rise,radius and any other factor which mayaffect the special lintel design and costing.
When loading figures are not available, thenplease provide a full set of drawingsincluding:
(a) plans(b) elevations(c) sections(d) wall construction(e) floor construction and direction
This information will enable our designengineers to calculate the relevant loadings.
Information can be sent directly to theTechnical Department by email: info@igltd.co.uk or by fax back on 01633 486495.
• IG standard lintels are available in stainless steel.
• Outstanding durability through austenitic chromium nickel steelto BS EN 10088-2 1.4301 (304S15) .
• Suitable for use in coastal and industrial environments.
• All IG galvanised steel loading tables apply.
Lintel Soffit Cladding
Universal Arch
Manufactured from rigid PVC to match UPVC window frames, the IG lintel soffitcladding is designed to clip over the front flange of the external wall lintel to providean aesthetically pleasing appearance to the exposed outer flange.
Supplied in white (type SCW) and brown (type SCB), soffit cladding is available inlengths to meet all standard openings, for example a 1500 mm length is available tofit a structural opening width of 1200 mm. The cladding simply clips into place - nospecial tools are required.
Note: When soffit cladding is used, external wall lintels must be installed with aflexible damp proof course (DPC) which must project beyond the front face of thecladding.
109mm
450-500 475 75 IGAR 475 IGAR 75600-650 625 75 IGAR 625 IGAR 75660-710 685 75 IGAR 685 IGAR 75900-950 925 75 IGAR 925 IGAR 75
1000-1050 1025 75 IGAR 1025 IGAR 751060-1110 1085 75 IGAR 1085 IGAR 751200-1250 1225 75 IGAR 1225 IGAR 751300-1350 1325 75 IGAR 1325 IGAR 751460-1510 1485 75 IGAR 1485 IGAR 751600-1650 1625 75 IGAR 1625 IGAR 751675-1725 1700 75 IGAR 1700 IGAR 751760-1810 1785 75 IGAR 1785 IGAR 751890-1940 1916 150 IGAR 1916 IGAR 1502010-2060 2035 150 IGAR 2035 IGAR 1502090-2140 2115 150 IGAR 2115 IGAR 1502250-2300 2275 150 IGAR 2275 IGAR 1502300-2350 2325 150 IGAR 2325 IGAR 1502400-2450 2425 150 IGAR 2425 IGAR 1502505-2555 2530 150 IGAR 2530 IGAR 1502700-2750 2725 150 IGAR 2725 IGAR 150
Opening Sizes Nominal Arch Rise IG Ref. CAD CodeArch Span
IG’s comprehensive range of standard lintelscovers all applications in conventionalbuilding constructions. When a buildingrequires more unconventional supportsolutions, IG has the expertise to design andmanufacture special lintels that suit allshapes and sizes. These special lintels -some of which feature below - can includeradius, natural arch, gothic arch, corner,apex, cant brick, ‘I’ beam, 200mm-wide innerleaf, feature plate and wider cavity.
When low rise arches are required inbrickwork above openings, the IG UniversalArch provides the ideal former for thebricklayer. Vacuum-formed from whitepigmented, external weathering quality,impact resistant polystyrene.
Suitable for use in cavity walls and with timberframe construction, the unit is designed to siton any steel lintel with an outer flange of90mm to 95mm. The design provides an archrise of 75mm for arch spans from 475mm to1785mm, and a rise of 150mm for arch spansfrom 1916mm to 2725mm.
30
BBAAYY LLIINNTTEELL
AAPPEEXX LLIINNTTEELL
S P E C I A L M I T R E D L I N T E L S FAX BACK
Lintel Dimensions Wall Construction Plaster Key Requirements (please tick)
(clear span) A
Important Notes:Do not allow for bearing, thiswill be added at design stage.
ELEVATION
R
C
x°
C
Dimensions Required Wall Construction Plaster Key Requirements (please tick)
BRICKREVEAL
BRICKREVEAL
A
B C
Important Notes:Do not allow for bearing, this will be added at design stage.
Dimensions Required Wall Construction Plaster Key Requirements (please tick)
BRICKREVEAL
BRICKREVEALA
B C
D
CCOORRNNEERR LLIINNTTEELL
SPECIAL MITRED LINTEL ENQUIRY FORM
Please complete all details and submit to Technical on Fax: 01633 486495. If you require further information please Tel: 01633 486461.
From: Name
Company
Tel: Fax:
Email Job reference
Clear span A mm
Rise R mm
End bearing C mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
A-B = mm
B-C = mm
A-C = mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
A-B = mm
B-C = mm
C-D = mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
31
RRAADDIIUUSS AARRCCHH LLIINNTTEELL
NNAATTUURRAALL AARRCCHH LLIINNTTEELL
S P E C I A L A R C H L I N T E L S FAX BACK
PPAARRAABBOOLLIICC AARRCCHH LLIINNTTEELL
Lintel Dimensions Wall Construction Plaster Key Requirements (please tick)
(clear span) A
ELEVATION
R
C C
SPECIAL ARCH LINTEL ENQUIRY FORM
Lintel Dimensions Wall Construction Plaster Key Requirements (please tick)
Please complete all details and submit to Technical on Fax: 01633 486495. If you require further information please Tel: 01633 486461.
From: Name
Company
Tel: Fax:
Email Job reference
(clear span) A
ELEVATION
R
C C
Lintel Dimensions Wall Construction
(clear span) A
ELEVATION
R
C C
GGOOTTHHIICC AARRCCHH LLIINNTTEELL
Lintel Dimensions Wall Construction Plaster Key Requirements (please tick)
(clear span) A
ELEVATION
R
C C
Clear span A mm
Rise R mm
End bearing C mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
Clear span A mm
Rise R mm
End bearing C mm
Inside only
Both sides
None
Plaster Key Requirements (please tick)
Clear span A mm
Rise R mm
End bearing C mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
Clear span A mm
Rise R mm
End bearing C mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
Special Lintels continued over page
Enquiries for Special Lintels should be faxed to: 01633 486495 Enquiries for Special Lintels should be faxed to: 01633 486495
The loading tables in this brochure are the result of testing
at the group’s premises under the supervision and direction
of the British Board of Agrèment.
All tests were carried out in accordance with
BS 5977 Part 2 1983 and BS EN 846–9:2000 and relate to
the strength and torsional stiffness of lintels to sustain total
uniformly distributed loads.
The loading tables shown for the L1 (where noted), L1/E, L5
and L11 lintels are the results of testing in accordance with
BS 5977 Part 2 1983 and BS EN 846–9:2000, taking into
account composite assistance from the surrounding
masonry, this masonry should be of good quality (in
accordance with BS 5628).
A lintel should not exceed a maximum vertical or horizontal
deflection of 1/325 x the effective span, when subject to the
safe working load.
Note:
Load ratio 1 - applies to loads with an inner to outer leaf ratio
of between 1 :1 and 3 :1. This ratio is normally applicable to
lintels that support:
a. masonry
b. masonry and timber floors
Load ratio 2 - applies to loads with an inner to outer leaf ratio
of between 4 :1 and 19:1. This ratio is normally applicable
to lintels supporting:
a. constructions with concrete floors
b. eaves applications
The L1 profile has been subjected to two fire tests by:
a. The fire research station, Boreham Wood.
b. The Warrington Fire Research Station.
In both cases one hour fire rating was achieved with the
load successfully supported 48 hours later. Further details
available on request.
The service life of lintels will be equal to the life expectancy
of the building when installed with a flexible DPC and within
the humidity and
condensation conditions normally experienced in habitable
buildings.
Lintels conform to the requirements of BS EN 845–2:2003
for corrosion protection, workmanship and materials.
IG lintels are rated by the Housing Association Property Mutual
as satisfying the ‘35 years to first maintenance’ durability
rating, laid down in the ‘HAPM Component Life Manual’.
Galvanised lintels - lintels are fabricated from galvanised
steel to BS EN 10142 1991 Specification for continually hot
dip zinc coated low carbon steel sheet and strip for cold
forming: Technical advisory conditions, grade Fe P01 G,
with a coating type Z600 giving a minimum coating weight
(triple spot test) of 600g/m2; including both sides but with
a minimum yield stress of 250 N/mm2.
Stainless steel - All IG lintels can be manufactured with
stainless steel.
Stainless steel lintels and expanded metal lathing are
formed from Austenitic Chromium Nickel Steel to
BS EN 10088-2 1.4301 (304S15) and require no additional
corrosion treatment. Higher grades of stainless steel can be
supplied on request - BS EN 10088-2 1.4401 (316S31).
For the lintels to perform to the quoted loading figures and to
meet the durability expectations included in this brochure,
the following information MUST be adhered to:
1. Lintels damaged in transit should not be used.
2. Check the correct lintel is being installed.
3. All bearing areas should be prepared using full
bricks/blocks or padstones.
4. Lintels should be installed with a minimum 150mm end
bearing at both ends, be fully bedded on bricklaying
mortar and levelled both longitudinally and horizontally.
When limited end bearings are unavoidable, check with
IG technical office for suitability.
5. Open back lintels should be filled with masonry in
accordance with BS 5977 and a full block built in
through the end bearing and allowed to cure before
continuing building.
6. The inner and outer leaves supported by the lintel should
be raised together to avoid excessive eccentricity of
STRUCTURAL PERFORMANCE
FIRE TEST
DURABILITY
TECHNICAL INFORMATION
Technical information continued over page
3332
INSTALLATION
PPLLAANN RRAADDIIUUSS LLIINNTTEELL
S P E C I A L P L A N R A D I U S L I N T E L S FAX BACK
SPECIAL PLAN RADIUS LINTEL ENQUIRY FORM
Lintel Dimensions Wall Construction Plaster Key Requirements (please tick)
Please complete all details and submit to Technical on Fax: 01633 486495. If you require further information please Tel: 01633 486461.
From: Name
Company
Tel: Fax:
Email Job reference
Clear span AA mm
Radius RR mm
Outer leaf mm
Cavity width mm
Inner leaf mm
Inside only
Both sides
None
CORNER POST
CANT BRICK LINTEL
TIMBER ARCH LINTEL
NOTCHED LINTEL
END PLATED LINTELS
R
A
Important Notes:Do not allow for bearing, thiswill be added at design stage.
I BEAMS
VENETIAN ARCH LINTEL
ISLAMIC ARCH LINTEL
CRANKED LINTELS
STEPPED LINTELS
For more information on other special lintels please complete details above, tick boxesbelow and Faxback or contact the Technical Department Hotline on 01633 486461.
Enquiries for Special Lintels should be faxed to: 01633 486495
loading. Masonry above lintels should be allowed to cure
before applying floor or roof loads. If this is not achievable,
temporary support in the form of props should be used.
NHBC guidelines propose no greater than a 1m span for
props during construction.
7. When installing concrete floor units or other heavy
components, care should be taken to avoid shock
loading. Temporary support in the form of props is
advisable if there is a limited amount of masonry to the
outer leaf. Pre-cast floor units should be laid on a mortar
bed to avoid load concentrations at high points in the
masonry. Floor units should not be dragged into position.
8. Point loads should not be applied directly to lintel
flanges. Lintels should have a minimum of 150mm
masonry between the flange and the application level of
any form of loading.
9. In accordance with BS 5628 and NHBC requirements,
all external wall lintels MUST be installed with a flexible
damp proof course with the exception of those
adequately protected by an eaves overhang or similar
form of protection. Stop ends should be provided as
specified by BS 5628 Part 3 1985 and the NHBC to
avoid moisture entering the cavity near the reveals.
Proprietary stop ends should be used or alternatively
the DPC should extend to the edge of the front toe and
50 - 150mm beyond the end of the lintel (depending on
coursing) to allow formation of an integral stop end at a
suitable perp joint. Weepholes should be used in the
external masonry leaf to drain moisture away from the
cavity. A minimum of 2 weepholes should be provided for
each lintel, generally at 450mm centres. Weepholes can be
formed with proprietary weep vents or by leaving perp
joints open.
10. Masonry should not overhang any flange by more
than 25mm.
11. The lintel toe must project beyond the window/door
frame and it is recommended that a flexible sealing
compound is used between the underside of the lintel
flange and the frame to avoid moisture penetration.
12. When the underside of a lintel is exposed, its appearance
can be enhanced by the addition of lintel soffit cladding,
supplied in white and brown, or by the application of a
good quality etch primer and paint after installation.
To help ensure optimum performance and economy from
lintel specifications, IG provide a free expert advisory service.
The service includes:
1. Preparation of lintel schedules from drawings supplied.
These drawings should include the following information
if future revisions to the specifications are be avoided:
a. Plans including dimensions (1:50 scale preferable)
b. Elevations (1:50 or 1:100 scale)
c. Sections (1:50 scale preferable)
d. Floor joist layouts or PC concrete floor layouts and
loadings (1:50 scale preferable)
e. Roof layout, showing positions of girder trusses
etc. (1:50 scale preferable)
f. Any other relevant information, such as steelwork
layouts etc.
2. Provision of lintel location drawings.
3. Provision of structural calculations for Building Regulation
approval. We reserve the right to supply these only in
reply to a written request from a Building Control Authority
or upon the receipt of an order/letter of intent.
4. Advice on the use of lintels in uncommon situations
such as reduced end bearings, point loads and the like.
5. Design and detailing of special lintels, see special lintel
page 29.
Total UDL - This is the safe uniformly distributed load and
indicates the total design load spread evenly along the
length of the lintel including an approximate safety factor.
Ixx - Represents the moment of inertia or the second
moment of area and is a characteristic of the lintel shape. It
TECHNICAL ADVISORY SERVICE
indicates the degree of stiffness the lintel will exhibit under
a given load and span. The greater the value of Ixx, the less
the lintel will deflect.
Zxx - This is the section modulas and is used when
calculating the effects of uneven loading. It indicates the
maximum bending stresses that the lintel section can be
subjected to without exceeding the design stress.
Web buckling - This applies to box lintels and indicates the
maximum end reaction that the lintel can sustain before the
webs fail by buckling.
British and European Standards IG lintels are designed to
meet all relevant standards: for manufacture BS 5977
Part 2:1983 and BS EN 845–2:2003; for galvanised steel BS
EN 10142 1991 Specification for continuously hot dip zinc
coated low carbon steel sheet and strip and for stainless
steel BS EN 10088-2 1.4301 (304S15) cold rolled stainless
alloys
Agrément Certificate No 97/3343:
The BBA have assessed the following lintels which are covered
by the certificate: L1/S 50, L1/S 75, L1/S 100, L1/HD 50,
L1/HD 75, L1/HD 100, L1/XHD 50, L1/XHD 75, L1/XHD 100,
L1/S WIL 50, L1/S WIL 75, L1/S WIL 100, L1/HD WIL 50,
L1/HD WIL 75, L1/HD WIL 100, L1/XHD WIL 50, L1/XHD
WIL 75, L1/XHD WIL 100, L1/ST 50, L1/ST 75, L1/ST 100,
L1/ST HD 50, L1/ST HD 75, L1/ST HD 100, L1/ST XHD 50,
L1/ST XHD 75, L1/ST XHD 100, L1/S WOL 50, L1/S WOL
75, L1/S WOL 100, L7/50, L8/50, L9, BOX 75, BOX 100,
BOX 140, BOX 200, L5/50, L5/75 and L5/100.
Quality Control
Manufacturing facilities and quality control systems at
Cwmbran have been successfully assessed by the British
Standards quality inspectorate and the company has been
awarded a Quality Assurance certificate to BS EN ISO 9002.
Tabular information in this brochure includes CAD Codes
that relate to the IG Fastrack Database. This allows architects
and specifiers using computer aided design instant access
to IG steel lintel details to produce complete and accurate
drawings quickly and easily.
Supplied on CD-ROM, the Fastrack Database is available in
AutoCAD and DXF format. Specifiers can obtain free
copies directly from IG’s Technical Services Department
01633 486499.
Hazard Identification
� There may be a risk of cuts from sharp edges or projections.
� Structural products must be installed in accordance with
their specific instructions to prevent the risk of failure.
Handling, Storage & Disposal
� Handling of materials must comply with the Manual
Handling Operation Regulations 1992.
� Protective gloves should be worn when handling or cutting
material to prevent injury from sharp edges.
� Some products may have a film of mineral cutting fluid
after manufacture, therefore carry out personal hygiene
including proper washing of hands after contact.
� Where structural products are to be removed from an
existing installation, care must be taken to ensure that the
procedure followed does not compromise the loading/
installation restrictions applicable to the products.
� No special disposal requirements, subject to local restrictions.
COSHH
We are not aware of any risk to the person, arising from
chemicals or any other substances present on or in our products.
Part L Compliance
Following numerical analysis, the British Board of Agrément
has concluded that IG’s steel lintels with continuous base
plates do comply with the cold bridging requirements of
Part L of the Building Regulations.
Environmental
The expanded polystyrene core used in IG Lintels has an
ozone depletion potential of zero.
TERMINOLOGY USED IN TABLES
HEALTH AND SAFETY !
34 35
QUALITY ASSURANCE
FASTRACK DATABASE FOR CAD USERS
LintelHeader plate
Footer plate
Prop
Unique Products with Outstanding Benefits:
• Available off-the-shelf in easy-to-handle flat packs
• Easy to calculate quantities, transport, use and adapt
• Three sizes cover all roof pitches and cavity widths
• Impact, tear and abuse resistant thermostable polypropylene 0.8mm thick
• Compatible with all building materials
• Resistant to acid, alkali and sulphate
• Meets all current Building Regulations and NHBC requirements
• Will last the lifetime of the building
• The most cost-effective cavity tray system available
• Available from a national network of stockists
Cavity TraysA UNIQUE SINGLE ELEMENT CAVITY TRAY SYSTEM GABLE ABUTMENT SYSTEM
When a stepped or staggered gable abutment is formed the
status of the external skin below the roof line changes to that
of an internal skin. Accordingly, every gable abutment must be
constructed so as to prevent dampness and rainwater from
penetrating below the abutting roof line.
The IG Gable Abutment Cavity Tray forms a stepped cavity
dpc which is incorporated into the building during bricklaying.
The completed structure is ready to receive roof lead flashing
in the conventional way.
THE IG CAVITY TRAY - TYPE GA
Manufactured from polypropylene, the IG Gable Abutment
Cavity Tray is available in three sizes to suit all roof pitches up
to 60°. It is suitable for use in all brick, block and timber-
framed constructions, the large bridging piece catering for
cavity widths from 50mm to 100mm.
Supplied flat, the pre-creased trays allow for easy on-site
folding to the required shape - catchment, left and right hand
or ridge tray. A locating lip facilitates the accurate placement
of trays during bricklaying.
CALCULATING QUANTITIES
The single-element system makes the calculation of quantities
very simple. Whether you are building with bricks or blocks
the rule is the same: you require one cavity tray per course
per slope. On a double slope roof this calculation will give you
an extra tray that can be used to lengthen the ridge tray if
required.
SIZES AND ROOF PITCHES
The IG Gable Abutment Cavity Tray is available in three sizes
as detailed below. Trays are supplied in shrink-wrapped flat
packs in the quantities indicated or as single items.
Note: All packs contain full installation instructions and folding instructionsare printed on each tray
INTERNAL/EXTERNAL CORNERS
Flat-packed foldable corners complete the IG Gable Abutment
Cavity Tray System. Both internal (GAIC) and external (GAEC)
corner trays comprise factory-jointed two-piece assemblies
that are folded on site to form right-angled corners. The
trays are pre-creased and incorporate adjustment for 50mm,
75mm or 100mm cavity widths and incorporate mastic sealant
strips for overlapping areas.
REFURBISHMENT SYSTEM
The IG Refurbishment Cavity Trays System has been
specifically developed to facilitate both the insertion of a new
tray into an existing wall and the repair or alteration of an
existing damp proof course.
WHERE TO USE
Where a new lean-to extension meets an existing building,
the original external wall becomes an internal partition
below the roof line and must be protected from dampness
and the penetration or rainwater. Similarly, when a flat roof
is resurfaced with added insulation, or is reconstructed as an
inverted roof with top paving, the roof level may be raised
and thus require the skirting and its corresponding damp
proof course to be lifted.
In addition, existing cavity trays which have been poorly
constructed or have rotted allowing water to leak through must
be replaced.
THE IG CAVITY TRAY - TYPE RFT
Available off-the-shelf in flat-packs, the IG Refurbishment
Tray combines ease of handling, transportation and use
with complete effectiveness. It meets all current Building
Regulations and NHBC requirements. Manufactured from
polypropylene, the IG Refurbishment Tray is 620mm wide
by 280mm deep and is suitable for use in all brick, block and
timber-framed constructions. The large bridging piece caters
for cavity widths from 50mm to 100mm.
Supplied flat, the pre-creased trays allow for easy on-site
folding to the required shape including forming left and right
hand end stops. A locating lip facilitates accurate placement
during installation and the mastic sealant strip (protected by
release paper) ensures easy and watertight overlap jointing.
SPECIFYING
When specifying, the following wording is recommended:
“Provide IG Refurbishment Cavity Tray System from
IG Limited, Cwmbran, Gwent NP44 1XY (01633 486486) to
be installed as manufacturer’s instructions. Trays to be folded,
as instructions on tray, to form left and right hand stop ends”.
Refurbishment Cavity Trays
Code Size in mm Packs of:RFT 620 x 280 10
Outer Leaf SizeConstruction Roof Pitch Code In mm Packs of:
Brickwork 22.5°-60°GA1 375 x 310 50 or 10
Blockwork more than 45°
Brickwork 15°-30°GA2 525 x 310 5
Blockwork 35°-45°
Brickwork less than 15°GA3 675 x 310 5
Blockwork 25°-40°
REFURBISHMENT
GABLE ABUTMENT
36 37
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Thermal Spec 01T 02T 03T 04T 05T 06T 07T 08T 09TToughened glazing system (28mm pane ‘Low E’Gas Filled) U = 1.4 w/m2k
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Standard WindowSizes
38 39
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