Birtley Lintels Brochure PDF Brochure

CI/SfB (31.9)
Hh2
(M2)
JULY 2012
Birtley Building Products Ltd
Mary Avenue, Birtley, County Durham DH3 1JF.
Tel: 0191 410 6631 Fax: 0191 410 0650
Email: [email protected] Internet: www.birtley-building.co.uk
A member of the Hill & Smith Holdings Plc Group. Registered No:00602575 England.
Registered Office: Springvale Business & Industrial Park, Bilston, Wolverhampton WV14 0QL
The only complete range of lintels hot-dip galvanized after manufacture
Contents
Commitment to Quality:
Supergalv Performance Features
Lintel
Reference
4-6
AT 50
Constructive Innovation:
Product Specification
7
Custom-built Versatility:
Purpose Made Lintels
Technical Advisory Service
8-9
10
Firm Foundations:
Design and Building Practice
11 - 12
Supergalv:
The Complete Range of Lintels
13 - 30
Accessories:
Archform and Soffit Cover
31
Bay 6:
Corner Window Support System
32 - 33
Custom Specification:
Fax Back Specification Form
Page
No
Lintel
Reference
Page
No
25
HDX 50
14
AT 70
25
HDX 70
15
AT 90
25
HDX 90
16
HDX 110
17
CB 50
14
HDX 130
18
CB 70
15
HDX 150
19
CB 90
16
HDX 50/130
20
CB 110
17
HDX 70/130
21
CB 130
18
HDX 90/130
22
CB 150
19
INT 100
30
CB 50/130
20
INT 100 HD
30
CB 70/130
21
LA
28
MBL
28
OB 190
27
SB 100
26
CB 90/130
22
CB 125/90/100
24
CB 50 HD
14
CB 70 HD
15
CB 90 HD
16
CB EV 50
24
CB EV 90
24
SB 100 HD
26
DC 200
27
SB 100 HDX
26
DC 200 HDX
27
SB 140
26
SB 140 HD
26
SB 140 HDX
26
SBL 200
27
34 - 35
EV 100
28
HS 50
14
SEMICIRCULAR
HS 70
15
ARCHES
30
HS 90
16
SX 90
23
HS 110
17
HS 130
18
TF 50
29
HS 150
19
TF 50 HD
29
HS 50/130
20
XHD 90
23
HS 70/130
21
HS 90/130
22
HS 90/200
23
ACCESSORIES:
HS 125/90/100
24
ARCHFORM
31
SOFFIT COVER 31
RENDER KEY
BAY6
2
3
31
32-33
Commitment to Quality
Performance Features
Corrosion Protection
With over 40 years experience in the specification, design and
manufacture of steel lintels, Birtley Building Products stands at the
forefront of technological change and innovation.
All Supergalv lintels are protected by hot-dip galvanizing the
complete lintel after fabrication. This process out performs all
other protection systems by:
Investment in manufacturing technology continues to underpin
Birtley’s commitment to the UK lintel market, and to ensure that the
Supergalv range maintains its leading position when measured by
quality, performance, durability, design and cost-effectiveness.
Fully protecting every surface, cut edge and weld with a
metallurgically bonded zinc coating, where other systems
actually remove zinc during fabrication and do not provide
full protection to all surfaces.
At the heart of Birtley’s lintel production today is a fully automated,
computer-controlled manufacturing line that processes the product
from raw coil to finished item in a single sequence. This maintains a
consistent, precision, quality lintel while achieving extraordinary levels
of output. The plant was custom designed to Birtley’s specification
and manufactured by Europe’s leading suppliers of metal-forming
machinery, and this multi-million pound investment underlines the
long-term commitment of Birtley to the lintel industry.
Creating a build-up of zinc coating at the most vulnerable
points (edges etc.) which are more susceptible to damage
on site and are the least protected in other systems.
Depositing a minimum zinc coating thickness of 65µm
in a metallurgical bond over the base steel.
Optional ‘Ultragalv 2000’ (U2k) corrosion protection system.
This achieves a coating thickness of 150µm by shotblasting
the steel prior to galvanising. This is up to 7 times more Zinc
corrosion protection than other lintels, and the life of a Zinc
coating is directly proportional to its thickness.
Insulation
All external cavity wall lintels are insulated with expanded
polystyrene blocks to BS EN 13163. The insulation is CFC,
HCFC and HFA free and these agents are not used at any stage
in manufacture. All lintels comply with Parts L1 and L2 of the
Building Regulations approved documents.
The insulation has an ozone depletion potential of zero, and
being blown with pentane achieves a BREEAM credit for having
a global warming potential of zero.
Beyond the automated lintel line lies the state-of-the-art technology
built in to the Company’s galvanizing facility, the UK’s first fullyautomated, hot-dip galvanizing plant. Commissioned at a cost of over
£2.5 million, it incorporates one of the UK’s largest galvanizing baths.
This computer-controlled facility utilises proven European technology
to achieve a level and consistency of quality never before seen in this
country, while substantially increasing Birtley’s capacity and lowering
manufacturing costs.
We have a fully-computerised lintel scheduling function where the
expertise of our Technical Advisory Service provides support and
advice in the specification of lintels, including the provision of structural
calculations for building regulation submissions, and the design of
special lintels or steelwork to suit particular projects or unusual forms
of construction.
All this is supported by extensive stocks held at Birtley of all the
most popular lintel types, offering ready availability at all times.
Flexible production systems ensure a rapid response to all other lintel
requirements. Most important of all, though, is the close partnership
which exists between Birtley and its nationwide network of builders’
merchants and distributors, whose commitment to stocks of Supergalv
lintels allows them to provide an excellent level of service, whenever
and wherever required.
4
The underside of the insulation is ridged to act as an efficient
plaster key and the absence of a baseplate removes any
possibility of a coldbridge occurring at the window head.
Structural Performance
The structural performance of Supergalv lintels is supported
by systematic and extensive in-house testing and confirmed by
independent testing. Lintels have been tested for structural
performance, flexural strength and shear load resistance by the
University of Wales School of Engineering and the University of
Teesside Heavy Structures Test facility. The safe working loads
shown are derived from calculations on the physical properties
supported by tests, and refer to uniformly distributed loads
applied in the ratio of:
‘CB’ range
1:1 to 1:3
‘CB HD’ range 1:1 to 1:5
‘HS’ ‘AT’ range 1:5 to 1:19
‘HDX’ range
1:5 to 1:19
‘SX’ range
1:5 to 1.19
‘XHD’ range
1:5 to 1:19
For loads ratios beyond this range, or for any unusual loading
conditions, please contact our Technical Department for advice.
5
Regulatory Authority
Relative Performance of Corrosion Protection
Systems as Applied to Steel Lintels
Supergalv lintels are designed and manufactured
taking into account the requirements of:
The current British/European standard (BS EN 8452:2003) allows various grades of corrosion protection,
with the responsibility for compliance resting with the
specifier, who must take into account exposure
categories and local climatic conditions. Don’t be
caught out, specify the correct system for the job.
- BSI
- NHBC
- HAPM (Housing Association Property Mutual)
- Zurich Municipal
Life to First Maintenance Chart
- BRE
Based on category 3 exposure (moderate to severe),
as defined by ‘Galvanizers Association’ (1.5µm per
annum Zinc atmospheric corrosion rate).
All lintels conform fully to EN 845-2:2003.
The Supergalv CB Range - feature-packed
design for the 21st Century.
The CB range is designed for ease of installation
and to exceed the performance requirements of all
existing standards. In applying state of the art technology
to improve design standards, we have also recognised
our duty to the environment by selecting an insulation
system which is 100% CFC-free, HCFC free and has
both an ozone depletion of zero, and a global warming
potential of zero.
110
YEARS
Thermal values of wall construction maintained
through lintel.
Easily installed, locating entirely within cavity.
The Supergalv range is considered non-hazardous to health
under normal conditions of use, as laid down by the COSHH
regulations 1994. Please refer to page 11 for advice on the
correct storage, handling and installation of lintels.
60
Manufacture
50
Supergalv lintels are produced from decoiled slit steel, cut
to length and cold formed by press-braking. Where appropriate,
seam welding to BS6265 1982 or spot welding to BS 1140 1980
completes fabrication.
All lintels are then hot-dip galvanized following an extensive
chemical pre-treatment, by immersion in our own galvanizing
bath operating at a temperature of 450˚C. Lintels are then
allowed to air cool to avoid any risk of distortion.
20
10
Fully insulated lintel - no air gaps, no interruptions,
pure insulation.
Although the Supergalv and Ultragalv processes offer the
highest level of corrosion protection available, there may be
instances where the use of stainless steel may be more
appropriate, e.g. certain industrial applications, or marine
environments. To satisfy these requirements we can offer our
full range of lintels fabricated from stainless steel to
BS EN 10088-2 (304 S15). Other grades may also be available,
please contact Technical Department for advice.
80
30
Design provides firm location for masonry to
maintain dimensions and integrity of cavity.
Corrosion protection is provided by zinc to BS EN 1179: 2003
Health & Safety
40
Simple plastering and curtain-batten fixing etc.
to blockwork.
Supergalv lintels are manufactured from steel to BSEN
10025 Fe 430 A, having a minimum yield stress of 300 N/mm2.
90
70
No need to cut blocks.
Material
Where appropriate external wall lintels are insulated with
CFC-free expanded polystyrene manufactured under
BS EN ISO 9001 and BS 13163.
100
Just compare the features of the CB:
Constructive Innovation
0
High-grade, flame retardant EPS insulation.
Birtley ‘Ultragalv 2000’ (optional)
Risk of cold bridging eliminated by thermal barrier
of insulating foam and absence of steel bridge
between outer and inner skin.
Integral plaster-key in base flange eliminates need
for messy and dangerous mesh.
150µm
Birtley ‘Supergalv’ (standard)
65µm
Other manufacturers
42µm
Fire Resistance
Supergalv lintels have been tested and approved to BS476 :
Part 20 : 1987 for determination of the fire resistance of loadbearing elements of construction. Test reports are available on
request.
Zinc Corrosion Rates
Category
Category
Category
Category
Category
Base of insulating material provides additional
plaster-key.
Single thickness of steel simplifies locating within
brickwork joint.
1
2
3
4
5
:
:
:
:
:
0.5µm
1.0µm
1.5µm
2.0µm
2.5µm
per
per
per
per
per
annum
annum
annum
annum
annum
For other information and localised conditions,
see the ‘Architects and Engineers Guide to Hot-Dip
Galvanizing’, published by the Galvanizers Association,
or check the web site www.galvanizing.org.uk
The CB is designed to suit standard duty
applications up to 3900mm long, with a Medium Duty
range to 3000mm for loads up to 36kN.
6
Quality Assurance
Birtley Building Products is a British Standards Institute (BSI)
registered firm, with a quality system conforming to BS EN ISO
9001 : 2008, covering procedures for lintel manufacture and
galvanizing. This commitment to quality is reinforced by the
award of the BSI Kitemark to lintels within the range. All
Supergalv lintels fully satisfy the requirements of EN 845-2:2003.
7
Custom-built Versatility
Custom Options
Purpose Made Lintels
When the building design demands something out of the
ordinary, Supergalv lintels can be custom-designed and
manufactured to suit a wide variety of opening shapes,
dimensions and loadings. Typical special applications include:
Arch lintels, e.g.
Natural Arch, Gothic Arch, Radius Arch
Corner lintels
Curved in Plan lintels
Apex lintels
Cant brick lintels
Extra heavy duty lintels
Roller shutter lintels
Extra long span lintels (to 9.5m)
Purpose-made lintels are designed and manufactured in
close liaison with the specifier and contractor, including the
provision of full structural calculations where required,
ensuring that all requirements are satisfied and that installation
is straightforward.
As well as an infinite range of special lintel designs to
suit any architectural design or loading requirement,
Supergalv lintels are available in all cavity wall styles
adapted to suit special circumstances. Please contact
our Technical Advisory service for details and information
on price and availability. Examples of these special service
lintels are:
CP
Where the underside of the lintel is completely
exposed, e.g. porches, driveways, etc., a closer plate
can be welded prior to galvanizing to provide a neat,
aesthetically pleasing finish to the soffit of the lintel.
To specify, add ‘CP’ to the end of the lintel reference,
e.g. CB50 CP. (Lintel will be supplied uninsulated, unless
specified otherwise).
NM
Where the inner leaf of a cavity wall is fair-faced
and the inner flange of the lintel is not plastered, the
plaster key on this flange can be omitted.
To specify, add ‘NM’ to the end of the lintel reference,
e.g. CB50 NM.
Manufactured within Birtley utilising CAD and CNC
fabrication facilities, all purpose-made lintels comply fully with
EN 845-2:2003, are manufactured within the QA systems of
BS EN 9001 and, very importantly, are finished to the same
standard of corrosion protection as the standard range of
Supergalv lintels - i.e. 65µm zinc coating to all surfaces, applied
by hot-dip galvanizing after fabrication. Optional ‘Ultragalv 2000’
offers minimum of 150µm of Zinc projection. Purpose made
lintels are also available in stainless steel to BS EN 10088-2.
ND
To minimise the mortar bed thickness at the end
bearings, e.g. when using stone heads and surrounds,
the weather drip on the front flange of the lintel can be
omitted.
To specify, add ‘ND’ to the end of the lintel reference,
e.g. CB50 ND.
U2K ‘Ultragalv 2000’ maximum corrosion protection
with 150µm Zinc coating. To specify add ‘U2K’ to the
end of the lintel reference, e.g. CB50 U2K.
Our technical department can also offer guidelines for installation
of special lintels, as some designs, such as curved on plan
and lengths over 4.8m which may need to be propped during
installation.
Patents
Supergalv lintels and Birtley Building Products are protected by
the following Patents and Trade Marks:
2 019 250
2 063 331
2 063 953
2 083 093
2 103 680
2 185 764
2 271 367
7 936 481
2001478
120787 Eire
8
9
Technical Advisory Service
Birtley Building Products provides comprehensive technical
support to designers, specifiers, builders and merchants covering
all aspects of the design, specification and installation of Supergalv
lintels. The service includes :
Computer-based preparation of Lintel Schedules from drawings
supplied (preferably plans, elevations and sections including
floor joist layout and loadings, concrete floor directional spans
and loading, and roof layout as appropriate).
Provision of structural calculations for Building Regulation approval
by individual calculation for specific locations.
Advice on the use of lintels for unusual situations, e.g. reduced
end bearings, point loadings, use of lintels in refurbishment
projects, etc.
Detailed drawings to illustrate the use of lintels in particular
situations.
Design & Building Practice for Steel Lintels
Specifications
NHBC Standards
BS 5977: Part 1: 1981 (1986) AMD. 4796 Method for
Assessment of Load.
Part
EN 845-2:2003 Specification for Prefabricated Lintels.
BS 476: Parts 20 - 23 Test methods and criteria for the
fire resistance of elements of building construction.
BS EN ISO 1461:1999 Specification for Hot Dip
Galvanized Coatings on Iron and Steel Articles.
BS7668, BS EN 10029, BS EN 10025 Parts 1, 3, 4 and 5,
and BS EN 10210 Part 1 Weldable Structural Steels.
BS EN ISO 14713-2:2009 Protective Coating of Iron and
Steel Structures Against Corrosion.
6: SUPERSTRUCTURE
6.1 External Masonry Walls
Clause
D6 (b)
Design
D9
Design
M8
Materials
Sitework
S6
6.2 External Timber Framed Walls and Wall Panels
Clause
8.2 (b)
6.3 Internal Walls
Clause
D5
Design
S3 (F)
Sitework
Design Considerations
PD 6697:2010 Recommendations for the design of
masonry structures to BS EN 1996-1-1 and BS EN 1996-2.
All Supergalv Lintels are designed to satisfy the following
requirements:
Loadings
Building Regulations
• The proportion of Live Load to Total Load carried by
the Lintel must not exceed 50%. A safety factor of 1.6
is allowed in all published Safe Loads.
REGULATION 4: Requirements relating to building work.
REGULATION 6: Requirements relating to material
change of use.
• Point Loads are permissible in certain circumstances.
REGULATION 7: Materials and workmanship.
Schedule
Part A:
Part B:
Part C:
Part L:
1 Requirements
Structure
Fire
Resistance to Moisture
Conservation of Fuel and Power
Approved
A1:
B3:
B4:
C4:
L2:
L3:
Documents
Loading
Internal Fire Spread (Structure)
External Fire Spread
Resistance to Weather and Ground Moisture
Resistance to the Passage of Heat (Dwellings)
Resistance to the Passage of Heat (Buildings
other than Dwellings)
• A lintel shall have a maximum Horizontal or Vertical
Deflection of 1/200 x the Effective Span* when
subjected to the Safe Working Load.
*(Effective Span = Distance between the Centres of
Bearings)
Dimensional Deviations
Length
Width & Height
Straightness or bow
+/- 15mm
+/- 5mm
0.5% of the length,
up to a maximum of 10mm
Bearings
• The end bearings for lintels should normally be not less
than 100mm. In no case should the lintel tray extend less
than 50mm beyond the cavity side of the solid masonry
return to drain clear of a vertical dpc.
Materials and Workmanship to Support Regulation 7.
• The width of a lintel bearing on an inner leaf should be
equal to at least 80% of the thickness of that leaf.
• The overhang of masonry supported by lintel should not
exceed 25mm.
• The cavity widths shown in our tables are maximum
dimensions and must not be exceeded.
For details of which lintel ranges
have been assessed see website
10
11
Design & Building Practice for Steel Lintels
Damp Proof Systems
HAPM Rating
• Good building practice encourages the use of a
separate damp proof course to a lintel in all external
wall-situations, and Birtley Building Products endorses
this approach in all circumstances.
• The HAPM Component Life Manual assesses the life
to first maintenance for Supergalv lintels as 45 years
when used in accordance with the manufacturer’s
instructions. This exceeds the maximum 35+ year rating
of Class A standard.
• Regardless of lintel profile or corrosion protection system,
BRE and NHBC require the application of a separate
dpc in all buildings in Scotland, Northern Ireland and
all coastal regions and areas of Severe Exposure (as
defined in BRE Digest 127) in England.
Material Compatibility
• Mortar must comply with the requirements of BS 5628
(Part 3: 1985).
• Timber preservatives used for the protection of joinery
components (e.g. windows) are unlikely to affect
galvanized steel except that preservatives based on
copper-chrome-arsenic (CCA) and inorganic flame
retardants may attack galvanized steel
(ref. BRE IS 11/77).
• The cavity tray should have a vertical height of at least
140mm with a minimum rise of 100mm from the front
of the cavity. The length of the tray should be such that
it extends 150mm beyond the inner face of the cavity
closer. The cavity tray should extend beyond the front
toe of the lintel to protect door and window heads,
with the upstand returned into the inner leaf masonry.
• If possible, provision of all necessary fixing holes should
be arranged so as to be carried out at the time of
fabrication and before galvanizing.
• Stop ends should be provided by turning up the ends
of the tray, or by the use of separate self-adhesive units.
A minimum of two bedweeps should be used at
450mm centres.
Installation Advice
• Do not use damaged lintels, inspect at delivery stage.
Fire Resistance
• Do not bear lintels onto cut blocks, always use full
masonry units or padstones.
• The BRE Fire Research Station ‘Guidelines for the
Construction of Fire Resisting Structural Elements’ gives
design recommendations applicable to lintels.
• Do not dry bed lintels on bearings. Mortar beds should
be used to prevent lintel settling under load.
• Independent test reports in accordance with BS 476 are
available from Supergalv Lintels.
• Do use an additional DPC.
Thermal Insulation
• Do use stop ends and bedweeps (at 450mm centres)
to all lintels in fairfaced masonry walls.
• Normally the thermal conductivity of an exposed wall is
limited to a maximum U Value of 0.35 W/m2K in
dwellings and other residential buildings, industrial or
storage buildings, where the prescribed maximum area
for glazing and minimum standards of insulation for
solid areas are adhered to.
THE ONLY COMPLETE
RANGE OF
L I N T E L S
HOT DIP GALVANIZED
AFTER MANUFACTURE
• Do ensure that open back lintels are filled with properly
bonded masonry before work proceeds over.
• Do ensure that both leaves of the cavity wall are raised
equally to avoid eccentric loading of lintel flanges.
• To avoid cold bridging over the wall face area behind the
lintel, the masonry or insulation system of the designed
value should be maintained to the head level of the lintel.
• Do position concrete floor units carefully and gently to
avoid impact damage and shock loads which may
temporarily over stress the lintel with resultant excessive
deflection or distortion.
• Do make sure that the lintel toe projects beyond the
window head to prevent water ingress.
• Lintels of Open Back design achieve the same U value
as the wall by being filled with the same blockwork and
insulation material. This allows an increase in single
glazed window area. Lintels of Box design can be
supplied with expanded polystyrene blocks for
additional insulation.
• Do ensure that the maximum cavity width is not
exceeded, and that masonry does not overhang by
more than 25mm.
Supergalv Lintels cannot be held responsible for any errors or omissions
in this listing, nor for any consequences which may arise directly or
indirectly from its use. As part of our policy of continuous product
improvement we reserve the right to change specifications without notice.
12
13
Cavity Walls
Cavity Walls
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
Outer Leaf
Cavity
Inner Leaf
250 to 270
STANDARD DUTY
Overall Width
100
Outer Leaf
50 to 70
Cavity
100 to 115
Length Range
mm
CB 50
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
750 - 1200
Inner Leaf
Max UDL Depth
kn
mm
15
112
Weight
kg/m
5.8
1350 - 1650
15
112
7.3
1800 - 2100
20
143
8.1
270 to 290
100
70 to 90
100 to 115
Length Range
mm
CB 70
STANDARD DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1200
15
106
5.8
1350 - 1650
15
106
7.3
1800 - 2100
20
148
8.1
2250 - 2400
22
148
9.9
2250 - 2400
22
148
10.1
2550 - 2700
26
175
11.0
2550 - 3000
26
185
11.6
2850 - 3000
26
190
11.6
3300 - 3900
26
200
14.2
3300 - 3900
26
205
Not recommended for the support of P.C.Concrete floors
14.2
Not recommended for the support of P.C.Concrete floors
CB 50 HD
MEDIUM DUTY
750 - 1500
36
153
10.1
1650 - 2100
36
205
14.2
2250 - 3000
36
205
CB 70 HD
MEDIUM DUTY
750 - 1500
36
148
10.1
1650 - 2100
36
200
14.2
2250 - 3000
36
208
14.6
Not recommended for the support of P.C.Concrete floors
14.5
Not recommended for the support of P.C.Concrete floors
HS 50
HEAVY DUTY
HDX 50
EXTRA HEAVY DUTY
750 - 1200
70
225
19.4
1350 - 1800
70
225
19.4
HS 70
HEAVY DUTY
750 - 1200
70
225
19.4
1350 - 1800
70
225
19.4
1950 - 2100
60
225
19.4
1950 - 2100
60
225
19.4
2250 - 2700
60
225
19.4
2250 - 2700
60
225
19.4
2850 - 3000
55
225
19.4
2850 - 3000
55
225
19.4
3300 - 3900
50
2225
19.4
3300 - 3900
50
225
19.4
4200 - 4500
40
225
19.4
4200 - 4500
40
225
19.4
4800
35
225
19.4
4800
35
225
19.4
5100
25
225
19.4
5100
25
225
19.4
750 - 2100
100
225
31.1
2250 - 3300
80
225
31.1
3600 - 4200
70
225
31.1
750 - 2100
100
225
31.1
2250 - 3300
80
225
31.1
HDX 70
EXTRA HEAVY DUTY
3600 - 4200
70
225
31.1
4500 - 4800
60
225
31.1
4500 - 4800
60
225
31.1
5100
45
225
31.1
5100
45
225
31.1
Denotes Plaster Key
14
Denotes Plaster Key
15
Cavity Walls
Cavity Walls
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
Outer Leaf
Cavity
Inner Leaf
290 to 310
STANDARD DUTY
Overall Width
100
Outer Leaf
90 to 110
100 to 115
Length Range
mm
CB 90
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
750 - 1200
Max UDL Depth
kn
mm
15
106
Weight
kg/m
5.9
1350 - 1650
15
106
7.4
1800 - 2100
20
138
8.4
2250 - 2400
22
151
10.4
2550 - 3000
26
187
12.0
3300 - 3900
26
202
14.2
310 to 330
100
Cavity
110 to 130
Inner Leaf
100 to 115
Length Range
mm
CB 110
STANDARD DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1500
20
138
8.6
1650 - 2100
20
143
10.7
2250 - 2700
25
173
11.8
2850 - 3300
30
195
14.9
Not recommended for the support of P.C.Concrete floors
Not recommended for the support of P.C.Concrete floors
CB 90 HD
MEDIUM DUTY
750 - 1500
36
138
10.5
1650 - 2100
36
195
13.9
2250 - 3000
36
202
14.2
HS 110
HEAVY DUTY
Not recommended for the support of P.C.Concrete floors
HS 90
HEAVY DUTY
HDX 90
EXTRA HEAVY DUTY
750 - 1200
70
225
19.4
1350 - 1800
70
225
19.4
1950 - 2100
60
225
19.4
HDX 110
EXTRA HEAVY DUTY
750 - 2100
60
225
21.7
2250 - 2700
60
225
21.7
2850 - 3000
55
225
21.7
3300 - 3900
50
225
21.7
4200 - 4500
40
225
21.7
4800
35
225
21.7
5100
35
225
21.7
750 - 2100
100
225
31.1
2250 - 3300
80
225
31.1
3600 - 4200
70
225
31.1
2250 - 2700
60
225
19.4
4500 - 4800
60
225
31.1
2850 - 3000
55
225
19.4
5100
45
225
31.1
3300 - 3900
50
225
19.4
4200 - 4500
40
225
19.4
4800
35
225
19.4
5100
25
225
19.4
750 - 2100
100
225
31.1
2250 - 3300
80
225
31.1
3600 - 4200
70
225
31.1
4500 - 4800
60
225
31.1
5100
45
225
31.1
Versions also available for 125 to 140 inner leaf
Denotes Plaster Key
16
Denotes Plaster Key
17
Cavity Walls
Cavity Walls
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
Outer Leaf
330 to 350
STANDARD DUTY
Overall Width
100
Outer Leaf
HEAVY DUTY
HDX 130
EXTRA HEAVY DUTY
100
130 to 150
Cavity
150 to 170
Inner Leaf
100 to 115
Inner Leaf
100 to 115
750 - 1500
Max UDL Depth
kn
mm
20
129
Weight
kg/m
8.6
1650 - 2100
20
137
10.7
2250 - 2700
25
166
11.8
2850 - 3300
30
188
14.9
Length Range
mm
CB 150
STANDARD DUTY
750 - 2100
60
225
21.7
2250 - 2700
60
225
21.7
2850 - 3000
55
225
21.7
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1500
20
115
8.6
1650 - 2100
20
118
10.7
2250 - 2700
25
152
11.8
2850 - 3300
30
174
14.9
Not recommended for the support of P.C.Concrete floors
Not recommended for the support of P.C.Concrete floors
HS 130
350 to 370
Cavity
Length Range
mm
CB 130
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
HS 150
HEAVY DUTY
750 - 2100
60
225
21.7
2250 - 2700
60
225
21.7
2850 - 3000
55
225
21.7
3300 - 3900
50
225
21.7
3300 - 3900
50
225
21.7
4200 - 4500
40
225
21.7
4200 - 4500
40
225
21.7
4800
35
225
21.7
4800
35
225
21.7
5100
25
225
21.7
5100
25
225
21.7
750 - 2100
100
225
34.7
750 - 2100
100
225
34.7
2250 - 3300
80
225
34.7
3600 - 4200
70
225
34.7
2250 - 3300
80
225
34.7
3600 - 4200
70
225
34.7
HDX 150
EXTRA HEAVY DUTY
4500 - 4800
60
225
34.7
4500 - 4800
60
225
34.7
5100
45
225
34.7
5100
45
225
34.7
Versions also available for 125 to 140 inner leaf
Versions also available for 125 to 140 inner leaf
Denotes Plaster Key
18
Denotes Plaster Key
19
Cavity Walls
Cavity Walls
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
Outer Leaf
Cavity
Inner Leaf
275 to 310
STANDARD DUTY
Overall Width
100
Outer Leaf
50 to 70
Cavity
125 to 140
Length Range
mm
CB 50/130
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
750 - 1200
Inner Leaf
Max UDL Depth
kn
mm
15
108
Weight
kg/m
5.9
1350 - 1500
15
108
7.4
1650 - 1800
20
140
8.5
295 to 330
100
70 to 90
125 to 140
Length Range
mm
CB 70/130
STANDARD DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1200
15
100
7.6
1350 - 1650
20
128
10.3
1800 - 2400
22
140
12.5
1950 - 2400
22
148
10.4
2550 - 2850
30
177
14.3
2550 - 2850
26
177
11.6
3000 - 3900
26
192
15.0
3000 - 3900
26
185
Not recommended for the support of P.C.Concrete floors
13.9
Not recommended for the support of P.C.Concrete floors
HS 50/130
HEAVY DUTY
HDX 50/130
EXTRA HEAVY DUTY
750 - 1200
60
225
16.5
1350 - 2100
60
225
18.0
2250 - 2700
60
225
19.5
HS 70/130
HEAVY DUTY
750 - 1200
60
225
16.5
1350 - 2100
60
225
18.0
2250 - 2700
60
225
19.5
2850 - 3000
55
225
19.5
2850 - 3000
55
225
19.5
3300 - 3900
50
225
19.5
3300 - 3900
50
225
19.5
4200 - 4800
40
225
19.5
4200 - 4800
40
225
19.5
5100
25
225
19.5
5100
25
225
19.5
750 - 2100
100
225
34.5
750 - 2100
100
225
34.5
2250 - 3300
80
225
34.5
3600 - 4200
70
225
34.5
2250 - 3300
80
225
34.5
3600 - 4200
70
225
34.5
HDX 70/130
EXTRA HEAVY DUTY
4500 - 4800
60
225
34.5
4500 - 4800
60
225
34.5
5100
45
225
34.5
5100
45
225
34.5
Denotes Plaster Key
20
Denotes Plaster Key
21
Cavity Walls
Cavity Walls
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
Outer Leaf
Cavity
Inner Leaf
315 to 350
STANDARD DUTY
Overall Width
100
Outer Leaf
90 to 110
Cavity
125 to 140
Length Range
mm
CB 90/130
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
750 - 1200
Inner Leaf
Max UDL Depth
kn
mm
15
90
Weight
kg/m
7.6
1350 - 1650
20
118
10.3
1800 - 2400
22
130
12.5
HEAVY DUTY
100
90 to 110
190 to 215
Length Range
mm
HS 90/200
HEAVY DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1350
60
225
22.4
1500 - 2100
60
225
27.2
2250 - 3300
60
225
31.0
2550 - 2850
30
167
14.3
3600 - 4800
50
225
32.6
3000 - 3900
26
182
15.0
5100
35
225
32.6
Not recommended for the support of P.C.Concrete floors
HS 90/130
380 to 425
750 - 1200
60
225
16.5
1350 - 2100
60
225
18.0
2250 - 2700
60
225
19.5
Versions also available for other cavity widths
SX 90
HEAVY DUTY
750 - 4200
90
212
40.9
4500 - 4800
80
212
40.9
5100 - 5400
70
212
40.9
2850 - 3000
55
225
19.5
5700
65
212
40.9
3300 - 3900
50
225
19.5
6000
55
212
40.9
4200 - 4800
40
225
19.5
6300
50
212
40.9
5100
25
225
19.5
6600
45
212
40.9
Versions also available for other cavity widths.
To achieve above loads lintels should be laterally
restrained and propped during installation.
HDX 90/130
EXTRA HEAVY DUTY
750 - 2100
100
225
34.5
2250 - 3300
80
225
34.5
3600 - 4200
70
225
34.5
4500 - 4800
60
225
34.5
5100
45
225
34.5
XHD 90
EXTREME DUTY
750 - 4200
120
240
56.6
4500 - 4800
100
240
56.6
5100 - 5400
90
240
56.6
5700 - 6600
65
240
56.6
Versions also available for other cavity widths.
To achieve above loads lintels should be laterally
restrained and propped during installation.
Note: This lintel is supplied uninsulated. If required this
should be carried out on site.
Denotes Plaster Key
22
Denotes Plaster Key
23
Cavity Walls
Attic Truss
(Stonework)
Supports attic trusses in open eaves condition
We recommend the use of an
additional cavity tray with all
external cavity wall lintels
Overall Width
320 to 350
Overall Width
Outer Leaf
125 to 150
Outer Leaf
Cavity
Inner Leaf
95 to 110
100 to 115
Length Range
mm
750 - 1500
CB 125/90/100
MEDIUM DUTY
Cavity
Inner Leaf
Max UDL Depth
kn
mm
25
150
Weight
kg/m
9.5
1650 - 2400
30
190
13.9
2550 - 3000
30
210
17.0
250 to 285
100
50 to 70
100 to 115
Length Range
mm
AT 50
HEAVY DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1800
35
150
9.8
1950 - 2400
35
150
12.2
2550 - 2700
35
150
14.7
750 - 1800
35
150
9.8
1950 - 2400
35
150
12.2
2550 - 2700
35
150
14.7
750 - 1800
35
150
9.8
1950 - 2400
35
150
12.2
2550 - 2700
35
150
14.7
Not recommended for the support of P.C.Concrete floors
Versions are also available for other cavity widths
HS 125/90/100
HEAVY DUTY
750 - 2100
60
225
17.7
2250 - 3300
50
225
17.7
3600 - 4200
40
225
19.0
4500 - 4800
35
225
19.0
Overall Width
Outer Leaf
270 to 305
100
Versions also available for other cavity widths
Cavity
Inner Leaf
Eaves
AT 70
(Closed)
Cavity
Inner Leaf
Cavity
Inner Leaf
100 to 115
50 to 90
100 to 115
750 - 1200
CB EV 50
CB EV 90
HEAVY DUTY
70 to 90
15
103
5.2
1350 - 1500
15
103
6.4
1650 - 1800
20
131
7.4
1950 - 2100
20
138
7.6
2250 - 2700
26
192
11.3
Overall Width
Outer Leaf
Cavity
90 to 130
Inner Leaf
100 to 115
750 - 2100
20
160
7.9
2250 - 2700
20
185
13.0
AT 90
HEAVY DUTY
290 to 325
100
90 to 110
100 to 115
Denotes Plaster Key
24
Denotes Plaster Key
25
100 Internal Walls
200-215 Solid Walls
Plastered both sides
Lintels can be supplied insulated
(extra charge)
Length Range
mm
SB 100
STANDARD DUTY
SB 100 HD
HEAVY DUTY
SB 100 HDX
Max UDL Depth
kn
mm
750 - 1500
15
73
Weight
kg/m
5.1
1650 - 1800
20
140
6.6
1950 - 2700
20
140
8.3
Length Range
mm
SBL 200
MEDIUM DUTY
Max UDL Depth
kn
mm
Weight
kg/m
750 - 1500
20
142
9.0
1650 - 2100
20
142
10.1
2250 - 2700
20
142
11.3
2850 - 3600
25
215
11.2
2850 - 3000
25
218
13.8
3900 - 4500
30
215
16.8
3300 - 3600
40
219
17.2
4800
28
215
16.8
3900 - 4500
35
220
20.3
5100
24
215
16.8
4800
30
220
20.3
5100
28
215
20.3
750 - 1500
25
140
6.6
1650 - 2700
40
215
14.0
2850 - 3600
45
215
16.8
750 - 1500
60
140
11.5
1650 - 2700
60
215
16.8
Can be supplied pre-insulated at small extra charge
OB 190
MEDIUM DUTY
750 - 1500
9
90
5.7
1650 - 2100
12
95
9.3
2250 - 2550
20
160
10.2
2700 - 3000
20
160
12.2
EXTRA HEAVY DUTY
140 Internal Walls
DC 200
Plastered both sides
SB 140
STANDARD DUTY
SB 140 HD
HEAVY DUTY
750 - 2100
25
140
8.2
2250 - 2700
25
140
10.2
2850 - 3600
25
215
13.0
3900 - 4200
45
215
19.5
4500 - 4800
35
215
19.5
5100
28
215
19.5
750 - 1500
35
140
10.2
1650 - 2700
40
215
16.3
2850 - 3600
45
215
19.5
HEAVY DUTY
DC 200 HDX
EXTRA HEAVY DUTY
SB 140 HDX
EXTRA HEAVY DUTY
750 - 1500
60
140
14.5
1650 - 2700
60
215
19.5
750 - 2100
60
225
15.3
2250 - 3000
50
225
15.3
3300 - 3900
50
225
18.4
4200 - 4800
30
225
18.4
750 - 2100
100
225
31.1
2250 - 3900
60
225
31.1
4200 - 4800
50
225
31.1
5100
30
225
31.1
Note:
Max UDL figures may reduce if end bearings are less
than 150mm. If in doubt check Technical Department
Denotes Plaster Key
26
Denotes Plaster Key
27
100 External Walls
Length Range
mm
MBL
LIGHT DUTY
Lintels above 1500 long
should be propped.
See notes opposite
LA
MEDIUM DUTY
Lintels above 1500 long
should be propped.
See notes opposite
EV 100
HEAVY DUTY
Lintels above 3000 long
should be propped.
See notes opposite
750 - 900
Timber Frame
Max UDL Depth
kn
mm
2
Weight
kg/m
50
2.4
1050 - 1350
4
80
2.7
1500 - 2100
5
85
4.7
Use in lightly loaded locations such as meter boxes,
garage personnel doors etc.
Length Range
mm
TF 50
Weight
kg/m
750 - 2100
8
185
4.6
2250 - 3000
10
185
5.9
3300 - 3900
10
185
7.0
Versions also available for other cavity widths
Pinch batten must be used
with TF 50 lintels
750 - 1500
6
90
4.5
1650 - 1800
6
119
5.3
1950 - 2400
10
158
6.2
2550 - 3000
13
215
7.5
3300 - 3900
8
215
7.5
TF 50 HD
with cavity closer
750 - 2100
12
185
8.8
2250 - 300
15
185
10.1
3300 - 4800
10
185
11.2
Versions also available for other cavity widths
Use to carry outer leaf and provide support for cavity
tray where inner leaf is existing or supported separately.
750 - 1500
15
150
5.2
1650 - 2100
20
150
7.7
2250 - 3000
15
225
9.6
3300 - 4800
20
225
15.5
Lintels above 1200 long should be propped until lintel is fully loaded and
brickwork has matured. Use horizontal timber spreader to avoid distorting lintel.
Use single central prop for openings up to 2100.
For larger openings use multiple props (max spacing 1200).
Restraining clips (supplied) should be fixed to timber frame using
3 No 3.3mm Dia x 50 long galvanised nails.
Clip should overlap lintel by 12mm as indicated by line on clip.
Pinch batten must be
used with TF 50 lintels
28
Max UDL Depth
kn
mm
29
Internal Walls
Accessories
Non load bearing
Length Range
mm
900 - 1200
INT 100
Max UDL Depth
kn
mm
5
Weight
kg/m
20
1.9
LIGHT DUTY
750 - 2100
INT 100 HD
10
50
MEDIUM DUTY
Supports arched soldier
course over standard door
and window openings. Can
be used with all standard
external wall lintels.
Semicircular Arches
Outer Leaf
Cavity
Inner Leaf
Lintel Reference
Opening Width
Rise
Span
Opening Width
Rise
475
450 - 500
75
2125
2100 - 2150
150
625
600 - 650
75
2225
2200 - 2250
150
675
650 - 700
75
2375
2350 - 2400
150
775
750 - 800
75
2425
2400 - 2550
150
925
900 - 950
75
1025
1000 - 1050
75
1075
1025 - 1100
75
1125
1100 - 1150
75
1225
1200 - 1250
75
1375
1350 - 1400
75
1525
1500 - 1550
75
1675
1650 - 1700
75
1775
1750 - 1800
75
1925
1900 - 1950
150
3.3
ARCHFORM
Overall Width
Span
275 to 315
100
75 to 100
Lengths Available
SOFFIT COVER
100 to 125
900
Max UDL Weight Opening Radius Length
kn
kg
mm
mm
mm
SC600
20
10
600
300
900
SC 630
20
11
630
315
930
SC 900
20
15
900
450
1200
SC 915
20
15
915
457.5
1215
SC 1200
20
20
1200
600
1500
SC1500
20
25
1500
750
1800
1200
1500
1800
2100
Manufactured from UPVC, the soffit cover fits over the front
flange of standard lintels to provide an aesthetically pleasing
finish to the exposed soffit of the lintel.
Available in white only.
2400
2700
4500
Other sizes and cavity widths can be made to order
Lengths Available
RENDER KEY
900
SLEEVE
1200
1500
1800
2100
140 wide mesh
to inner leaf
A separate shaped cavity
tray should be used with
all semicircular lintels
This heavier gauge version of the soffit cover has keying
ribs on the underside to accept a rendered finish, thus
avoiding the need for special lintels, and the Health &
Safety implications of welded mesh.
2400
2700
4500
Denotes Plaster Key
30
31
The Birtley
The Birtley
BAY 6
BAY 6
The easy way to support cavity walls above
corner windows, bay windows etc.
Bay 6 system is designed to support vertical loads
only in standard duty loading conditions i.e. normal
domestic construction with timber floor loads.
Corner Window Support System
Corner Window Support System
• Uses standard components available ex-stock
• Easy to transport and handle
Bay 6 system can be used for sun lounges on the
basis that separate provision is made for horizontal
or windloads by structural engineer.
• No special drawings or design work needed
• Suits most standard wall constructions
Maximum vertical load per support post : 10kn.
• Hot-dip galvanized after fabrication
System is intended for use in domestic loading conditions with
timber floors and roofs. Do not use to support pre-cast concrete
floors. If in doubt contact technical department for advice.
Standard ex-stock lintels have hole
punched in each end of rear flange
for galvanizing purposes, this
locates over dowel on top plate
of post cap
part
number
description
P1645
support post - 1645 long
recommended
lintel
9
P3000
support post - 3000 long
T90/250
90° cap plate - 250-270 walls
CB50
14
8
T90/270
90° cap plate - 270-290 walls
CB70
8
T90/290
90° cap plate - 290-310 walls
CB90
8
T135/250
135° cap plate - 250-270 walls
CB50
7
T135/270
135° cap plate - 270-290 walls
CB70
7
T135/290
135° cap plate - 290-310 walls
CB90
7
S10
spacer shim - 10 deep
All measurements are shown in millimetres.
Cap plate manufactured in 6 types, to suit
90˚ and 135˚ angles, and for 50, 70, and 90
cavity widths, 150 long spigot on underside
locates into post
Spacer shims for height adjustment
Post stocked in two lengths, 1645 long for below
sill fixing and 3000 long for fixing at foundation level
(cut to required length on site) 48.3 dia x 5 circular
section allows post to be rotated to desired position
All components are hot-dip galvanized after fabrication
to BS1461.
With baseplate set 10mm from face of wall,
post sits in cavity immediately behind outer leaf.
This is the optimum position to accommodate post
within junction of window frames.
Unique baseplate
shape allows use
with 90˚ and 135˚
angles and 50 to
100 cavity widths
All measurements are shown in millimetres.
32
weight
(kg)
33
Note: Due to manufacturing limitations and
tolerances, it is possible that in some instances
the locating dowels may not quite line up with
the punched holes in lintels. If this occurs please
open up or re-drill holes in lintels. This will not
affect the structural performance of the product.
Fax Back
Fax Back
Please fill in required dimensions and fax to 0191 411 2558
Please fill in required dimensions and fax to 0191 411 2558
Semicircular Arch
Apex Lintel
PLASTER/RENDER REQUIREMENT.
Please tick: No Mesh
Half Mesh
Full Mesh
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
PLASTER/RENDER REQUIREMENT.
REMARKS
Please tick: No Mesh
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
Fax back to
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
PLASTER/RENDER REQUIREMENT.
Half Mesh
Full Mesh
Full Mesh
REMARKS
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
Extended Semicircular Arch
Please tick: No Mesh
Half Mesh
Arched Lintel
Fax back to
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
Name
Company
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
Project
Fax No
PLASTER/RENDER REQUIREMENT.
REMARKS
Please tick: No Mesh
Half Mesh
Full Mesh
Project
Fax No
Telephone
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
e mail
Gothic Arch
e mail
Three-Centred Lintel
PLASTER/RENDER REQUIREMENT.
Please tick: No Mesh
Company
REMARKS
Telephone
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
Name
Half Mesh
Full Mesh
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
WALL CONSTRUCTION
Outer Leaf:
Cavity Width:
Inner Leaf:
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
LOADING CONDITIONS
Unless stated otherwise, we will select
a steel thickness which will give the
following safe loads.
Up to 2100 long 20Kn
2100 to 3000 long 30Kn
Above 3000 long Check with technical
dept or supply
working drawings.
REMARKS
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
MARY AVENUE, BIRTLEY,
CO.DURHAM DH3 1JF
Telephone:
0191 410 6631
General Fax: 0191 410 0650
Sales:
0191 410 0132
Technical:
0191 411 2558
e mail:
[email protected]
Internet:
www.birtley-building.co.uk
www.lintels.com
34
PLASTER/RENDER REQUIREMENT.
Please tick: No Mesh
Half Mesh
Full Mesh
REMARKS
Lintel is hot-dip galvanized after manufacture.
Minimum coating weight 920G/M2 (Inc. both sides).
We recommend the use of an additional damp proof tray with this lintel.
MARY AVENUE, BIRTLEY,
CO.DURHAM DH3 1JF
Telephone:
0191 410 6631
General Fax: 0191 410 0650
Sales:
0191 410 0132
Technical:
0191 411 2558
e mail:
[email protected]
Internet:
www.birtley-building.co.uk
www.lintels.com
35