Lintel Manual 11
Cl/SfB (31.9) Hh2
The UK and Ireland’s leading supplier of Steel Lintels and the authority on providing lintel solutions to builders, developers, builders merchants and end-users.
Keystone Lintels Limited, the leading manufacturer of steel lintels was founded in 1989. The short history of Keystone has been one of relentless expansion and continuous innovation whilst redefining the meaning of service in the lintel industry. Production facilities in Swadlincote and Cookstown provide an efficient, flexible and ergonomic working environment, which is part of the culture of quality and service at Keystone.
Keystone Group HQ, Cookstown
Keystone Lintels, Swadlincote
Keystone… the lintel company with genuine commitment to servicing your lintel requirements. Keystone’s most important asset is its people. Every employee undergoes training on our NVQ approved premises. We have also received the Investors in People accreditation.
Keystone People • • • • •
Professional Trained and Motivated Accessible Responsive Extensive Product Knowledge
2
The Keystone support package includes: • • • • • • •
Individual design service on full range of lintels On site technical assistance and measurement Free scheduling and specification service Extensive range of steel lintels and structural supports Structural performance calculations Best delivery service in the industry Comprehensive product literature
• Interactive website with AutoCAD drawings • RIBA Assessed CPD Online “Steel Lintels – The Definitive Guide”. Visit www.keystonelintels.co.uk/cpd • BMF & NMBS Approved Merchant e-Learning - Staff Training Online Visit www.keystonelintels.co.uk/merchant
Contents Company Profile Lintel Selection Chart Technical Data Cavity Wall Lintel (50-165mm Cavity) Extra Heavy Duty Lintels Eaves Lintels Archboards Solid Wall Lintels Single Leaf Lintels Box Lintels Thin Joint Lintels Cavity Trays Extended Range RIBA Assessed CPD Special & Custom-made Lintels Full Arch Segmental Arch Venetian Arch Apex Arch Parabolic Arch Gothic Arch Corner Bow Square Bay Splayed Bay Sun Lounge Lintel Bow Sun Lounge Lintel Venetian Arch Sun Lounge Lintel Apex Sun Lounge Lintel Brick Arch Sets Windposts Keystone “Special” Projects Keylite Roof Windows
page 2 4 6 8 17 18 18 19 20 22 24 26 28 29 30 32 32 33 33 34 35 36 37 38 39 40 44 45 46 47 48 50 58
3
Lintel Selection Chart 50-70mm Cavity Wall Lintels Standard Loading
Heavy Duty Loading
70-90mm Cavity Wall Lintels Standard Loading
Heavy Duty Loading
90-110mm Cavity Wall Lintels Standard Loading
Heavy Duty Loading
110-165mm Cavity Wall Lintels 110-130mm Cavity
130-150mm Cavity
150-165mm Cavity
Extra Heavy Duty Lintels
Solid Wall Lintels
Box Lintels Standard Loading
Heavy Duty Loading
Single Leaf Lintels
Eaves Lintels and Arch Boards
4
S/K-50
S/K-50 WIL
S/K-50 WOL
Page 8
Page 8
Page 8
HD/K-50
HD/K-50 WIL
CFS/K-50
Page 9
Page 9
Page 9
S/K-70
S/K-70 WIL
S/K-70 WOL
Page 10
Page 10
Page 10
HD/K-70
HD/K-70 WIL
CFS/K-70
Page 11
Page 11
Page 11
S/K-90
S/K-90 WIL
S/K-90 WOL
Page 12
Page 12
Page 12
HD/K-90
HD/K-90 WIL
CFS/K-90
Page 13
Page 13
Page 13
S/K-110
S/K-110 WIL
HD/K-110
Page 14
Page 14
Page 14
S/K-130
S/K-130 WIL
HD/K-130
Page 15
Page 15
Page 15
S/K-150
S/K-150 WIL
HD/K-150
Page 16
Page 16
Page 16
X/K
X/K-WIL
X/K-215 WIL
Page 17
Page 17
Page 17
INT/K
SW/K
IB/K (2c)
Page 19
Page 19
Page 19
BOX/K-60 BOX/K-75
BOX/K-100
BOX/K-150
Page 22
Page 22
Page 23
HDBOX/K-100
HDBOX/K-150
HDBOX/K-200
Page 22
Page 23
Page 23
SB/K
SL/K
SW/K-100
Page 20
Page 20
Page 20
T/K HDT/K
B/K
RB/K
Page 21
Page 20
Page 21
EL/K-50
EL/K-90
Arch Boards
Page 18
Page 18
Page 18
CPD Online: www.keystonelintels.co.uk/cpd
Special & Custom-made Lintels Full Arch Lintel
Segmental Arch Lintel
Venetian Arch Lintel
Page 10
Page 32
Page 32
Page 33
CFS/K-70 WIL
Apex Arch Lintel
Parabolic Arch Lintel
Gothic Arch Lintel
Page 33
Page 34
Page 35
Corner Lintel
Bow Lintel
Square Bay Lintel
Page 36
Page 37
Page 38
Splayed Bay Lintel
Sun Lounge Lintel
Bow Sun Lounge Lintel
Page 39
Page 40
Page 44
Venetian Arch Sun Lounge Lintel
Apex Sun Lounge Lintel
Keystone “Special” Projects
Page 45
Page 46
Page 50
S/K-50 215 WIL Page 8
CFS/K-50 WIL Page 9
S/K-70 215 WIL
Page 11
S/K-90 215 WIL Page 12
CFS/K-90 WIL Page 13
CFS/K-110 Page 14
CFS/K-130 Page 15
CFS/K-150 Page 16
IBX/K Page 17
IB/K (3c) Page 19
BOX/K-200 Page 23
TJ/K & TW/K Thin Joint Lintels
Page 24 and 25
Cavity Trays Page 26
Roller Shutter Lintel Page 28
Brick Arch Sets Page 47
Windposts Page 48
the key to a brighter life
Page 58 5
Technical Data
Material
Insulation
Quality
ISO 9001 CERTIFICATE NO. FM 21541 ISO 14001 CERTIFICATE NO. EMS 553955
Structural Performance
Keystone Lintels are manufactured from high quality grade galvanised steel to BS EN 10346:2009 DX51D plus Z600 or Z275 with minimised spangle finish. In accordance with BS5977: part 2, 1983 (BS EN 845-2:2003) all cut edges are treated with corrosion resistant paint.
The Keystone Lintel core is entirely filled with ‘CFC free’ insulation, which completely fills all voids in the lintel, particularly at the apex ensuring continuity with wall insulation and reducing cold bridge effect in this area. This ensures that the Keystone Lintel range is one of the most thermally efficient lintels available with a thermal conductivity of 0.033 W/mk.
Keystone Lintels are manufactured to the highest quality and are continually assessed by the BSI to ensure our quality assurance systems comply with BS EN ISO 9001: 2008. The ‘Keystone People’ are also a highly trained and motivated workforce. Our manufacturing premises have been approved as a N.V.Q. Training Centre and the company has also received the Investors In People Accreditation. Keystone is committed to the continuous development of our Environmental Management Systems, working in partnership with our specifiers, customers and suppliers. Keystone Lintels Ltd are the first steel lintel manufacturer to be awarded BS EN ISO 14001:2004.
The Keystone Lintel range have safe working loads shown in each applicable loading table, taking into account the differential loading arrangements which are common to traditional cavity wall construction. Differential Load 3:1 ratio, 75% load on inner leaf. Differential Load 19:1 ratio, 95% load on inner leaf. Lintel Types HD/K, S/K-50 (215WIL), S/K-70 (215WIL), SK-90 (215WIL), S/K-110, S/K-130, S/K-150, SB/K, T/K, SL/K, RB/K, TJ/K, TW/K, INT/K, SW/K, IB/K, EL/K-50, EL/K-90, CFS/K, X/K have been tested as a composite unit with surrounding masonry, built in accordance with BS5628-3:2005. These composite units have been tested in accordance with the requirements of BS5977: part 2 1983 (BS EN 845-2:2003).
Testing
BBA – Extensive testing has been carried out on the Keystone range of lintels. The lintel testing procedure and Agrément Board assessment is carried out under the direct supervision of the University of Ulster. Fire Test – The Keystone S/K lintel range has been subjected to fire tests at the Warrington Fire Research Station and has achieved a one hour fire certificate by successfully supporting their imposed load for 48 hours after the tests. Durability – The service life of lintels shall be the same as that anticipated for the building within which they are used, when used in conjunction with a flexible D.P.C. and where the normal humidity and condensation levels of a habitable building exist. The Keystone Lintel range complies with the technical requirements of the Housing Association Property Mutual
6
CPD Online: www.keystonelintels.co.uk/cpd
Technical Data
Installation
Lintels should be installed with a minimum end bearing of 150mm bedded in mortar, levelled along its length and across its width. With cavity walls, both leaves should be raised together to avoid excessive eccentricity of loading and be allowed to cure before applying floor or roof loads. Blockwork is permitted to overhang the lintel flange by a maximum of 25mm. Point loads and concrete floor units should not be applied without prior consultation with our Technical Department or a Structural Engineer. Care should also be exercised in the selection of lintels for each application with regard to wall construction, cavity width and loads applied. COSHH – All components and materials in our products are considered as non-hazardous to health under normal conditions of use as determined by COSHH Regulations 1994. Due care should be taken when lifting and handling lintels with regard to weights. A table of weights for individual lintel types is available on request. For further information contact our Technical Department. A cavity tray should be installed over all openings in external cavity walls.
Support for the Specifier For queries regarding Keystone AutoCAD files please contact Fastrack on Tel: +44 (0)20 8668 4646
Keystone Lintel Profile
We provide the following: • Individual Design Service on full range of Specials • On-Site technical assistance and measurement • Specification service for Architects and Engineers • Free Take off / Scheduling Service for drawings • Structural Performance Calculations • Comprehensive product range literature and interactive website • RIBA Assessed CPD Online “Steel Lintels – The Definitive Guide”. Visit www.keystonelintels.co.uk/cpd
Negligible Cold Bridging Effect
To view or download any of our architectural details and sun lounge plans visit our website at www.keystonelintels.co.uk
Profiled Insulation ‘CFC free’
Steel Plaster Key for improved fire resistance Thermal Break Plate (Part ‘L’ Compliant) for added rigidity and structural performance 7
Standard Loading
50-70mm Cavity
S/K-50 Manufactured Length in 150mm increments
‘h’ nominal
95
100
48
S/K-50 WIL
600 1200
1350 1500
1650 1800
1950 2100
2250 2400
2550 2700
2850 3000
3150 3600
3750 4000
4200* 4800*
Height ‘h’
79
98
110
134
150
172
172
209
209
209
Thickness
1.6
1.8
2
2
2
2
2.5
2.9
2.9
3.2
Total UDL kn 3:1
12
14
19
21
21
26
27
27
26
27
Total UDL kn 19:1
10
12
16
17
19
22
20
20
19
22
600 1500
1650 1800
1950 2100
2250 2400
2550 3000
Height ‘h’
96
110
136
162
172
196
196
Thickness
2
2
2
2
2.5
3.2
3.2
Total UDL kn 3:1
12
15
20
24
28
30
27
Total UDL kn 19:1
10
13
18
20
21
26
25
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
125
48
S/K-50 215 WIL Extended fin 225mm high for lintels greater than 2100mm long
95
215mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
48
210
Fin height equals lintel height up to 2100mm long
S/K-50 WOL
78
104
121
146
171
171
209
209
Thickness
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.9
Total UDL kn 3:1
25
25
25
30
30
35
40
40
Total UDL kn 19:1
20
20
20
25
25
30
35
35
Fin Height
100
120
140
175
225
225
225
225
For standard loading conditions with 215mm wide inner leaf as a composite beam. To achieve loading figures, lintel must be built in with blockwork as shown.
150mm wide outer leaf
‘h’ nominal
8
48
600* 1350* 1650* 1950* 2250* 2550* 2850* 3150* 1200* 1500* 1800* 2100* 2400* 2700* 3000* 4000*
Height ‘h’
Manufactured Length in 150mm increments
120
3150* 3750* 3600* 4200*
100
600 1350
1500 1650
1800 2100
2250 2700
2850* 3150* 3000* 3600*
Height ‘h’
110
122
172
200
200
200
Thickness
2.5
2.5
2.5
2.9
2.9
3.2
Total UDL kn 3:1
14
15
23
30
32
30
Total UDL kn 19:1
11
13
18
22
30
26
CPD Online: www.keystonelintels.co.uk/cpd
Heavy Duty Loading
50-70mm Cavity
HD/K-50 Manufactured Length in 150mm increments
‘h’ nominal
95
48
100
HD/K-50 WIL
600 1200
1350 1500
Height ‘h’
105
121
171
209
209
209
209
Thickness
2.9
2.9
2.9
2.9
3.2
3.2
3.2
Total UDL kn 3:1
30
30
40
40
40
35
33
Total UDL kn 19:1
22
22
35
35
35
32
28
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
48
1650* 2250* 2700* 3150* 3750* 2100* 2550* 3000* 3600* 4200*
125
600 1200
1350* 1650* 1950* 2250* 1500* 1800* 2100* 2700*
Height ‘h’
95
109
161
161
200
Thickness
2.9
2.9
2.9
2.9
3.2
Total UDL kn 3:1
20
25
35
30
36
Total UDL kn 19:1
17
22
27
25
32
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-50 Manufactured Length in 150mm increments 229
95
48
100
CFS/K-50 WIL
To achieve loading figures, lintel must be built in with blockwork as shown.
150mm wide inner leaf Manufactured Length in 150mm increments
229
95
48
125
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
To achieve loading figures, lintel must be built in with blockwork as shown.
*Continuous Bottom Plate
9
Standard Loading
70-90mm Cavity
S/K-70 Manufactured Length in 150mm increments
‘h’ nominal
95
68
100
S/K-70 WIL
600 1200
1350 1500
1650 1800
1950 2100
2250 2400
2550 3000
3150 3600
3750 4000
4200* 4800*
Height ‘h’
98
89
106
130
142
168
204
204
204
Thickness
1.6
1.8
2
2
2
2.5
2.9
2.9
3.2
Total UDL kn 3:1
12
14
18
21
21
27
27
26
27
Total UDL kn 19:1
10
12
14
17
19
22
20
19
22
600 1350
1500 1650
1800
1950 2100
2250 2400
2550 3000
Height ‘h’
93
90
110
134
158
167
192
192
Thickness
2
2
2
2
2
2.5
3.2
3.2
Total UDL kn 3:1
12
13
20
19
24
27
30
27
Total UDL kn 19:1
10
11
17
17
20
21
26
25
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
125
68
S/K-70 215 WIL Extended fin 225mm high for lintels greater than 2100mm long
95
215mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
210
68
Fin height equals lintel height up to 2100mm long
S/K-70 WOL
Height ‘h’
67
100
110
142
167
167
167
204
Thickness
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.9
Total UDL kn 3:1
25
25
25
30
30
35
40
40
Total UDL kn 19:1
20
20
20
25
25
30
35
35
Fin Height
100
120
140
175
225
225
225
225
For standard loading conditions with 215mm wide inner leaf as a composite beam. To achieve loading figures, lintel must be built in with blockwork as shown.
Manufactured Length in 150mm increments
120
10
68
600* 1350* 1650* 1950* 2250* 2550* 2850* 3150* 1200* 1500* 1800* 2100* 2400* 2700* 3000* 4000*
150mm wide outer leaf
‘h’ nominal
100
3150* 3750* 3600* 4200*
600 1350
1500 1650
1800 2100
2250 2700
2850* 3150* 3000* 3600*
Height ‘h’
106
118
168
192
192
192
Thickness
2.5
2.5
2.5
2.9
2.9
3.2
Total UDL kn 3:1
14
15
23
30
32
30
Total UDL kn 19:1
11
13
18
22
30
26
CPD Online: www.keystonelintels.co.uk/cpd
Heavy Duty Loading
70-90mm Cavity
HD/K-70 Manufactured Length in 150mm increments
600 1200
1350 1500
1650* 2250* 2700* 3150* 3750* 2100* 2550* 3000* 3600* 4200*
Height ‘h’
103
117
167
205
205
205
205
Thickness
2.9
2.9
2.9
2.9
3.2
3.2
3.2
Total UDL kn 3:1
30
30
40
40
40
35
33
Total UDL kn 19:1
22
22
35
35
35
32
28
‘h’ nominal
95
100
68
HD/K-70 WIL
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
125
68
600 1350
1500* 1950* 2250* 1800* 2100* 2700*
Height ‘h’
130
155
192
192
Thickness
2.9
2.9
2.9
3.2
Total UDL kn 3:1
20
25
30
36
Total UDL kn 19:1
17
22
25
32
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-70 Manufactured Length in 150mm increments 229
95
68
100
CFS/K-70 WIL
To achieve loading figures, lintel must be built in with blockwork as shown.
150mm wide inner leaf Manufactured Length in 150mm increments
229
95
68
125
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
To achieve loading figures, lintel must be built in with blockwork as shown.
*Continuous Bottom Plate
11
Standard Loading
90-110mm Cavity
S/K-90 Manufactured Length in 150mm increments
‘h’ nominal
95
88
100
S/K-90 WIL
600 1200
1350 1500
1650 1800
1950 2100
2250 2400
2550 2700
2850 3000
3150 3600
3750 4000
4200* 4800*
Height ‘h’
88
88
107
125
150
162
171
200
200
200
Thickness
1.6
1.8
2
2
2
2.5
2.5
2.9
2.9
3.2
Total UDL kn 3:1
12
16
19
21
23
27
27
27
26
27
Total UDL kn 19:1
10
13
16
17
18
22
20
20
19
22
600 1200
1350 1800
1950 2400
2550 3000
Height ‘h’
92
107
150
177
188
188
Thickness
2
2
2
2.5
3.2
3.2
Total UDL kn 3:1
13
17
23
24
30
27
Total UDL kn 19:1
11
14
18
18
26
25
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
125
88
S/K-90 215 WIL Extended fin 225mm high for lintels greater than 2100mm long
95
215mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
210
88
Fin height equals lintel height up to 2100mm long
S/K-90 WOL
90
105
138
163
171
200
Thickness
2.5
2.5
2.5
2.5
2.5
3.2
Total UDL kn 3:1
25
25
30
35
40
40
Total UDL kn 19:1
20
20
25
30
35
35
Fin Height
100
120
175
225
225
225
For standard loading conditions with 215mm wide inner leaf as a composite beam. To achieve loading figures, lintel must be built in with blockwork as shown.
150mm wide outer leaf
‘h’ nominal
12
88
600* 1500* 1800* 2250* 2850* 3150* 1350* 1650* 2100* 2700* 3000* 4000*
Height ‘h’
Manufactured Length in 150mm increments
120
3150* 3750* 3600* 4200*
100
600 1350
1500 1650
1800 2100
2250 2700
2850* 3150* 3000* 3600*
Height ‘h’
93
110
162
188
188
188
Thickness
2.5
2.5
2.5
2.9
3.2
3.2
Total UDL kn 3:1
14
15
23
30
32
30
Total UDL kn 19:1
11
13
18
22
30
26
CPD Online: www.keystonelintels.co.uk/cpd
Heavy Duty Loading
90-110mm Cavity
HD/K-90 Manufactured Length in 150mm increments
‘h’ nominal
95
88
100
HD/K-90 WIL
110
135
163
203
203
203
203
Thickness
2.9
2.9
2.9
2.9
3.2
3.2
3.2
Total UDL kn 3:1
30
30
40
40
40
35
33
Total UDL kn 19:1
22
22
35
35
35
32
28
150mm wide inner leaf
‘h’ nominal
88
1350* 1650* 2250* 2700* 3150* 3750* 1500* 2100* 2550* 3000* 3600* 4200*
Height ‘h’
Manufactured Length in 150mm increments
95
600 1200
125
600 1200
1350* 1650* 1950* 2250* 1500* 1800* 2100* 2700*
Height ‘h’
113
135
165
165
188
Thickness
2.9
2.9
2.9
2.9
3.2
Total UDL kn 3:1
20
25
35
30
36
Total UDL kn 19:1
17
22
27
25
32
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-90 Manufactured Length in 150mm increments 229
95
88
100
CFS/K-90 WIL
To achieve loading figures, lintel must be built in with blockwork as shown.
150mm wide inner leaf Manufactured Length in 150mm increments
229
95
88
125
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
To achieve loading figures, lintel must be built in with blockwork as shown.
*Continuous Bottom Plate
13
Wide Cavity Lintels
110-130mm Cavity
S/K-110 Manufactured Length in 150mm increments
‘h’ nominal
95
108
100
S/K-110 WIL
Height ‘h’
95
121
145
195
195
195
Thickness
2
2
2.5
2.9
3.2
3.2
Total UDL kn 3:1
16
22
24
27
26
25
Total UDL kn 19:1
13
18
18
22
19
20
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
108
600* 1650* 1950* 2250* 3150* 4200* 1500* 1800* 2100* 3000* 4000* 4800*
125
600* 1350* 1950* 2550* 3150* 1200* 1800* 2400* 3000* 4000*
Height ‘h’
95
107
142
185
185
Thickness
2
2
2.5
2.9
3.2
Total UDL kn 3:1
13
17
23
24
24
Total UDL kn 19:1
11
14
18
18
17
SK-110 WIL range are also available to suit 215mm wide inner leaf e.g. specify S/K-110 215WIL. Contact Keystone Technical Team for load tables.
HD/K-110 Manufactured Length in 150mm increments
‘h’ nominal
95
108
100
600* 1650* 2250* 3150* 3750* 1500* 2100* 3000* 3600* 4000*
Height ‘h’
125
145
195
195
195
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 3:1
30
30
35
32
30
Total UDL kn 19:1
20
22
30
28
26
HD/K-110 range is also available to suit 150mm wide inner leaf e.g. specify HD/K-110 WIL.
CFS/K-110 Manufactured Length in 150mm increments 229
95
14
108
100
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-110 range is also available to suit 150mm wide inner leaf e.g. specify CFS/K-110 WIL. To achieve loading figures, lintel must be built in with blockwork as shown.
CPD Online: www.keystonelintels.co.uk/cpd
Wide Cavity Lintels
130-150mm Cavity
S/K-130 Manufactured Length in 150mm increments
‘h’ nominal
95
128
100
S/K-130 WIL
Height ‘h’
103
128
190
190
190
190
Thickness
2
2
2.5
2.9
3.2
3.2
Total UDL kn 3:1
16
22
24
27
26
25
Total UDL kn 19:1
13
18
18
22
19
20
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
128
600* 1650* 1950* 2250* 3150* 4200* 1500* 1800* 2100* 3000* 4000* 4800*
125
600* 1350* 1950* 2550* 3150* 1200* 1800* 2400* 3000* 4000*
Height ‘h’
90
118
178
178
178
Thickness
2
2
2.5
2.9
3.2
Total UDL kn 3:1
13
17
23
24
24
Total UDL kn 19:1
11
14
18
18
17
SK-130 WIL range are also available to suit 215mm wide inner leaf e.g. specify S/K-130 215WIL. Contact Keystone Technical Team for load tables.
HD/K-130 Manufactured Length in 150mm increments
‘h’ nominal
95
128
100
600* 1650* 2250* 3150* 3750* 1500* 2100* 3000* 3600* 4000*
Height ‘h’
115
155
190
190
212
Thickness
2.9
2.9
3.2
3.2
3.2
Total UDL kn 3:1
30
30
35
30
30
Total UDL kn 19:1
20
22
30
25
26
HD/K-130 range is also available to suit 150mm wide inner leaf e.g. specify HD/K-130 WIL.
CFS/K-130 Manufactured Length in 150mm increments
229
95
128
100
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-130 range is also available to suit 150mm wide inner leaf e.g. specify CFS/K-130 WIL. To achieve loading figures, lintel must be built in with blockwork as shown.
*Continuous Bottom Plate
15
Wide Cavity Lintels
150-165mm Cavity
S/K-150 Manufactured Length in 150mm increments
‘h’ nominal
95
148
100
S/K-150 WIL
Height ‘h’
100
125
180
180
180
180
Thickness
2
2
2.5
2.9
3.2
3.2
Total UDL kn 3:1
16
22
24
27
26
25
Total UDL kn 19:1
13
18
18
22
19
20
150mm wide inner leaf Manufactured Length in 150mm increments
‘h’ nominal
95
148
600* 1650* 1950* 2250* 3150* 4200* 1500* 1800* 2100* 3000* 4000* 4800*
125
600* 1350* 1950* 2550* 3150* 1200* 1800* 2400* 3000* 4000*
Height ‘h’
88
115
168
168
168
Thickness
2
2
2.5
2.9
3.2
Total UDL kn 3:1
13
17
23
24
24
Total UDL kn 19:1
11
14
18
18
17
SK-150 WIL range are also available to suit 215mm wide inner leaf e.g. specify S/K-150 215WIL. Contact Keystone Technical Team for load tables.
HD/K-150 Manufactured Length in 150mm increments
‘h’ nominal
95
148
100
600* 1650* 2250* 3150* 3750* 1500* 2100* 3000* 3600* 4000*
Height ‘h’
125
160
180
180
200
Thickness
2.9
2.9
3.2
3.2
3.2
Total UDL kn 3:1
30
30
35
30
30
Total UDL kn 19:1
20
22
30
25
26
HD/K-150 range is also available to suit 150mm wide inner leaf e.g. specify HD/K-150 WIL.
CFS/K-150 Manufactured Length in 150mm increments 229
95
16
148
100
600 1500
1650 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
229
229
229
229
229
Thickness
2.9
2.9
2.9
3.2
3.2
Total UDL kn 19:1
70
60
50
45
40
CFS/K-150 range is also available to suit 150mm wide inner leaf e.g. specify CFS/K-150 WIL. To achieve loading figures, lintel must be built in with blockwork as shown.
CPD Online: www.keystonelintels.co.uk/cpd
Extra Heavy Duty Lintels
50-110mm Cavity
X/K-50/70/90 203 x 133 x 30kg/m UB inner leaf
Galvanised steel flange to outer leaf
Manufactured Length to 600 customers requirements 4800
5200
5400
5800
6200
6600
End bearing
200
200
200
200
200
200
Total UDL kn
86
75
70
65
60
55
To achieve loading figures, lintel must be laterally restrained. Lintel must be suitably propped during construction. X/K lintel range is available to suit 110-165mm cavity widths, e.g. specify X/K-110, X/K-130 and X/K-150.
Nominal
X/K-50/70/90 WIL 203 x 133 x 30kg/m UB inner leaf
Galvanised steel flange to outer leaf
150mm wide inner leaf Manufactured Length to 600 customers requirements 4800
5200
5400
5800
6200
6600
End bearing
200
200
200
200
200
200
Total UDL kn
86
75
70
65
60
55
To achieve loading figures, lintel must be laterally restrained. Lintel must be suitably propped during construction. X/K WIL lintel range is available to suit 110-165mm cavity widths, e.g. specify X/K-110, X/K-130 and X/K-150.
Nominal
X/K-50/70/90 215 WIL 203 x 133 x 30kg/m UB inner leaf
Galvanised steel flange to outer leaf
215mm wide inner leaf Manufactured Length to 600 customers requirements 4800
5200
5400
5800
6200
6600
End bearing
200
200
200
200
200
200
Total UDL kn
86
75
70
65
60
55
To achieve loading figures, lintel must be laterally restrained. Lintel must be suitably propped during construction. X/K 215 lintel range is available to suit 110-165mm cavity widths, e.g. specify X/K-110, X/K-130 and X/K-150.
Nominal
IBX/K
215mm wide solid wall
Galvanised steel flange to outer leaf
230 x 90 x 32.76kg/m PFC inner leaf
Manufactured Length to 600 customers requirements 4800
5200
5400
5800
6200
6600
End bearing
200
200
200
200
200
200
Total UDL kn
86
75
70
65
60
55
To achieve loading figures, lintel must be laterally restrained. Lintel must be built in with block/brickwork as shown and suitably propped during construction.
195
*Continuous Bottom Plate
17
Eaves Lintels and Arch Boards
EL/K-50
To suit cavity 50-80mm Manufactured Length in 150mm increments
40
48
100
EL/K-90
600 1500
1650 2100
2250 2400
2550 2700
Height ‘h’
95
134
150
150
Thickness
2
2
2
2.5
Total UDL kn
18
20
22
25
The EL/K-50 range can be supplied to suit 150mm inner leaf e.g.specify EL/K-50 WIL. For standard loading conditions at eaves level as a composite beam. To achieve loading figures lintel must be built in with blockwork and wall plate as shown.
To suit cavity 85-120mm Manufactured Length in 150mm increments
40
88
100
Arch Board
The Keystone Arch Board is available from stock in white plastic. This product is also available in a soft wood e.g. specify AB0925SW.
18
600 1500
1650 2100
2250 2400
2550 2700
Height ‘h’
95
134
150
150
Thickness
2
2
2
2.5
Total UDL kn
18
20
22
25
The EL/K-90 range can be supplied to suit 150mm inner leaf e.g.specify EL/K-90 WIL. For standard loading conditions at eaves level as a composite beam. To achieve loading figures lintel must be built in with blockwork and wall plate as shown.
Opening Size (mm)
Nominal Arch Span
Rise (mm)
Plastic Code
450-500
475
75
AB 0475P
600-650
625
75
AB 0625P
655-705
680
75
AB 0680P
725-775
750
75
AB 0750P
800-850
825
75
AB 0825P
900-950
925
75
AB 0925P
1025-1075
1050
75
AB 1050P
1075-1175
1135
75
AB 1135P
1200-1250
1225
75
AB 1225P
1325-1375
1350
75
AB 1350P
1460-1510
1485
75
AB 1485P
1500-1550
1525
75
AB 1525P
1600-1650
1625
75
AB 1625P
1675-1725
1700
75
AB 1700P
1760-1810
1785
75
AB 1785P
1900-1950
1925
150
AB 1925P
1950-2000
1975
150
AB 1975P
2100-2150
2125
150
AB 2125P
2225-2275
2250
150
AB 2250P
2300-2350
2325
150
AB 2325P
2400-2450
2425
150
AB 2425P
2550-2600
2575
150
AB 2575P
CPD Online: www.keystonelintels.co.uk/cpd
Solid Wall Lintels
INT/K-100 100
28
Overall Length
900
1050
1100
1200
Max Span
700
850
900
1000
Total UDL kn with 150mm coursing
5
5
5
5
Total UDL kn with 225mm coursing
10
10
10
10
For standard loading conditions to support internal openings in 100mm thick walls. The INT/K range can be supplied to suit 75mm wide walls e.g. specify INT/K 60.
SW/K Manufactured Length in 150mm increments
‘h’ nominal 195
600 1200
1350 1650
1800 2100
2250 2700
Height ‘h’
55
86
86
113
Thickness
2.5
2.5
2.9
3.2
6
8
8
10
Total UDL kn
For light duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction.
IB/K (2c) Manufactured Length in 150mm increments
600 1800
1950 2100
2250 3000
Height ‘h’
152
152
152
Thickness
2.5
2.9
3.2
Total UDL kn
30
30
30
152
195
For heavy duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction.
IB/K (3c) Manufactured Length in 150mm increments
227
195
600 1800
1950 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
227
227
227
227
227
Thickness
2.5
2.5
2.9
3.2
3.2
Total UDL kn
45
40
40
40
35
For heavy duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction.
19
Single Leaf Lintels
SB/K Manufactured Length in 150mm increments
‘h’ nominal
600 1350
1500 1800
1950 2250
2400 2700
Height ‘h’
80
100
150
200
Thickness
3.2
3.2
3.2
3.2
Total UDL kn
2.5
5
7
8
For use to support the outer leaf of cavity wall construction. The SB/K lintel should be suitably propped during construction. The SB/K lintel can be supplied with no top bend (e.g.specify ANG/K). 95 Optional factory fitted Cavity Closer (spec. SB/Kcc)
SL/K Manufactured Length in 150mm increments
‘h’ nominal
95
600 1350
1500 1800
1950 2400
2550 2700
2850 3000
Height ‘h’
150
150
225
225
225
Thickness
2.5
2.5
2.5
2.9
3.2
Total UDL kn
16
20
20
12
12
For use to support single leaf or outer leaf of cavity wall construction. To achieve loading figures, lintel must be built in with brickwork as shown and be suitably propped during construction.
SW/K-100 Manufactured Length in 150mm increments
600 1200
1350 1650
1800 2100
2250 2700
Height ‘h’
55
86
86
113
Thickness
2.5
2.5
2.9
3.2
6
8
8
10
Total UDL kn
‘h’ nominal
Suitable for 100mm and 150mm wide solid walls. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction.
95
B/K-50/70/90 Manufactured Length in 150mm increments
‘h’ nominal
2250 2400
2550 3000
3150 4800
Height ‘h’
150
225
225
225
Thickness
2.5
2.5
2.9
3.2
7
8
10
12
Total UDL kn
95
20
600 2100
Nominal
For use with inner leaf concrete lintel. The B/K lintel must be used in conjunction with a tight fitting timber batten, as shown, to prevent twisting. The B/K range can be supplied to suit wider cavities: e.g. specify B/K-70, B/K-90.
CPD Online: www.keystonelintels.co.uk/cpd
Single Leaf Lintels
T/K-50/70/90 Lateral restraint clips at 500mm centres fixed with 4mm x 50mm galvanised nails
Manufactured Length in 150mm increments
600 1650
1800 2400
2550 3000
3150 4800
Height ‘h’
102
155
185
250
Thickness
2.5
2.5
2.9
3.2
5
8
9
12
Total UDL kn ‘h’ nominal
For use with timber frame construction. The T/K lintel must be used in conjunction with lateral restraint clips and a tight fitting timber batten, as shown, to prevent twisting. The T/K range can be supplied to suit wider cavities: e.g. specify T/K-70, T/K-90. 95
Nominal
HDT/K-50/70/90 Lateral restraint clips at 500mm centres fixed with 4mm x 50mm galvanised nails
‘h’ nominal
Manufactured Length in 150mm increments
600 1650
1800 2400
2550 3000
Height ‘h’
155
185
250
Thickness
2.5
2.9
3.2
Total UDL kn
10
12
12
For use with timber frame construction. The T/K lintel must be used in conjunction with lateral restraint clips and a tight fitting timber batten, as shown, to prevent twisting. The T/K range can be supplied to suit wider cavities: e.g. specify T/K-70, T/K-90. 95
Nominal
XHDT/K-50/70/90 Lateral restraint clips at 500mm centres fixed with 4mm x 50mm galvanised nails
‘h’ nominal
Manufactured Length in 150mm increments
600 3000
3150 4800
Height ‘h’
250
250
Thickness
2.9
3.2
Total UDL kn
18
18
For use with timber frame construction. The T/K lintel must be used in conjunction with lateral restraint clips and a tight fitting timber batten, as shown, to prevent twisting. The T/K range can be supplied to suit wider cavities: e.g. specify T/K-70, T/K-90. 95
Nominal
RB/K-50/70/90 Manufactured Length in 150mm increments
600 1500
1650 2400
2550 3000
3150 4800
Height ‘h’
175
200
250
250
Thickness
2.5
2.9
2.9
3.2
Total UDL kn/m
7.5
7.5
7.5
7.5
For use with integral concrete ring beams. The RB/K type lintel must be bolted to the concrete ring beam at 400mm c/c using M16 rawl bolts. The RB/K type range can be supplied to facilitate various cavity widths: e.g. specify RB/K-50, RB/K-70, RB/K-90. 95
Nominal
21
Box Lintels
BOX/K-60 75
Manufactured Length in 150mm increments
600 1500
1650 1800
Height ‘h’
95
95
Thickness
1.6
1.6
Total UDL kn
15
10
95
Perforated steel for plaster key
Used to support internal openings in 75mm wide walls. (Can be insulated as optional extra).
BOX/K-75 95
Manufactured Length in 150mm increments
75
Perforated steel for plaster key
600 1650
1800
Height ‘h’
75
75
Thickness
1.6
2
Total UDL kn
15
10
Used to support internal openings in 100mm wide walls. (Can be insulated as optional extra).
BOX/K-100
95
95
95
Manufactured Length in 150mm increments 215
150
75
Perforated steel for plaster key
600 1500
1650 1800
1950 2400
2550 2700
2850 3600
3750 4000
4200 4800
Height ‘h’
75
150
150
150
215
215
215
Thickness
2
1.6
2
2
2.5
2.5
2.5
Total UDL kn
18
18
25
20
35
30
24
Used to support internal or external openings with 100mm wide walls. (Can be insulated as optional extra).
HDBOX/K-100 Manufactured Length in 150mm increments ‘h’ nominal
600 1200
1350 1800
1950 2700
Height ‘h’
150
150
215
Thickness
2.5
2.5
2.5
Total UDL kn
50
45
40
95 Perforated steel for plaster key
22
For heavy duty loading conditions to support internal or external openings with 100mm wide wall. (Can be insulated as optional extra).
CPD Online: www.keystonelintels.co.uk/cpd
Box Lintels
BOX/K-150 145
Manufactured Length in 150mm increments
‘h’ nominal
600 1800
1950 2400
2550 2700
2850 3600
3750 4000
4200 4800
Height ‘h’
150
150
150
215
215
215
Thickness
1.6
2
2
2.5
2.5
2.5
Total UDL kn
18
25
20
35
30
24
Perforated steel for plaster key
Used to support internal or external openings with 150mm wide walls. (Can be insulated as optional extra).
HDBOX/K-150 Manufactured Length in 150mm increments ‘h’ nominal
600 1200
1350 1800
1950 2700
Height ‘h’
150
150
215
Thickness
2.5
2.5
2.5
Total UDL kn
50
45
40
145
For heavy duty loading conditions to support internal or external openings with 150mm wide wall. (Can be insulated as optional extra).
Perforated steel for plaster key
BOX/K-200 Manufactured Length in 150mm increments
‘h’ nominal
600 1800
1950 2400
2550 2700
2850 3600
3750 4000
4200 4800
Height ‘h’
150
150
150
215
215
215
Thickness
1.6
2
2
2.5
2.5
2.5
Total UDL kn
18
25
20
35
30
24
Used to support internal or external openings with 215mm wide wall. (Can be insulated as optional extra). 200 Perforated steel for plaster key
HDBOX/K-200 Manufactured Length in 150mm increments
‘h’ nominal
600 1200
1350 1800
1950 2700
Height ‘h’
150
150
215
Thickness
2.5
2.5
2.5
Total UDL kn
50
45
40
For heavy duty loading conditions to support internal or external openings with 215mm wide wall. (Can be insulated as optional extra).
200 Perforated steel for plaster key
23
Standard Loading
Thin Joint Cavity Lintel System A New Development in Cavity Wall Construction The TJ/K lintel range enables fastrack construction of the structural internal leaf before the external leaf is built*
Fully Insulated Cavity Thermal Break Plate Part ‘L’ Compliant
Award-winning Earthdome specifies Keystone TJ/K Lintel The Secretary of State for Trade and Industry, presented the Earthdome project with top environmental award. Earthdome is a pioneering project where super thermally efficient, ecologically sound and hypo-allergenic homes are being constructed using the most thermally efficient materials available - Keystone’s Thin-Joint lintels fitted the bill! The Earthdome Eco project won the prestigious Green Apple Environment Award. It was selected to be ‘British Green Champion’ - top of it’s class for Fuel Power & Energy’. Winning this award is likely to give this innovative project access to European Environmental Awards.
TJ/K-50 Lateral restraint clips at 500mm centres fixed with 4mm x 50mm galvanised nails Level uniform surface for 3mm joint
Extended C section 225mm high for lintels greater than 1800mm
‘h’ nominal
95
48
Thermal Break Plate Part ‘L’ compliant
24
100
Manufactured Length in 150mm increments
600 1500
1650 1800
1950 2100
2250 2700
2850 3000
A
B
C
D
E
Height ‘h’
130
160
225
225
225
Thickness
5
5
3.2
5
5
10
15
18
27
25
3
5
8
9
10
Specification
Total UDL (Kn) Internal Leaf Total UDL (Kn) External Leaf
For standard loading conditions in 50mm wide thin joint cavity wall construction. To achieve loading figures lintels must be built in as shown with firmly butted perpendicular joints. The TJ/K lintel range can be supplied to suit wider cavities e.g. specify TJ/K-70, TJ/K-90.
Note: For other loading conditions contact the Keystone Technical Dept.
*Subject to structural conditions
CPD Online: www.keystonelintels.co.uk/cpd
Thin Joint Solid Wall Lintels The TW/K lintel range has been developed by Keystone for use over openings in thin joint solid wall construction.
Thermal Break (Part ‘L’ Compliant) External Cladding Warm Inner Surface
Cold Outer Surface
TW/K-215 Manufactured Length in 150mm increments
‘h’ nominal
600 1200
1350 1650
1800 2100
2250 2700
Height ‘h’
55
86
86
113
Thickness
2.5
2.5
2.9
3.2
6
8
8
10
Total UDL kn 195 Thermal Break
For light duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction. The TW/K lintel range is available to suit 250 to 300mm wide walls e.g. specify TW/K-250, TW/K-300.
HDTW/K-215 Manufactured Length in 150mm increments
150
600 1800
1950 2100
2250 3000
Height ‘h’
152
152
152
Thickness
2.5
2.9
3.2
Total UDL kn
20
22
27
For heavy duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction. The HDTW/K lintel range is available to suit 250 to 300mm wide walls e.g. specify HDTW/K-250, HDTW/K-300. 195 Thermal Break
ITW/K-215 Manufactured Length in 150mm increments
600 1800
1950 2100
2250 3000
3150 4000
4200 4800
Height ‘h’
227
227
227
227
227
Thickness
2.5
2.5
2.9
3.2
3.2
Total UDL kn
45
40
40
40
35
For heavy duty loading conditions for 215mm solid wall construction. To achieve loading figures, lintel must be built in with block/brickwork as shown and suitably propped during construction. The ITW/K lintel range is available to suit 250 to 300mm wide walls e.g. specify ITW/K-250, ITW/K-300.
227
195 Thermal Break
25
Cavity Trays A Unique Single Element Cavity Tray System
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 26
Gable Abutment
Refurbishment
CPD Online: www.keystonelintels.co.uk/cpd
Cavity Trays
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 Keystone 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 Keystone Cavity Tray - Type GA Manufactured from polypropylene, the Keystone 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 Keystone gable abutment cavity tray is available in three sizes. Trays are supplied in shrink-wrapped flat packs in the quantities indicated or as single items.
Outer Leaf
Roof
Construction
Pitch
Brickwork
22.5º-60º
Blockwork
more than 45º
Brickwork
15º-30º
Blockwork
35º-45º
Brickwork
less than 15º
Blockwork
25º-40º
Code
Size
Packs
in mm
of:
GA1
375x310
50or10
GA2
525x310
5
GA3
675x310
5
Note: All packs contain full installation instructions and folding instructions are printed on each tray
Internal / External Corners
In addition, existing cavity trays which have been poorly constructed or have rotted allowing water to leak through must be replaced.
The Keystone Cavity Tray - Type RFT Available off-the-shelf in flat-packs, the Keystone 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 Keystone 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.
Flat-packed foldable corners complete the Keystone gable abutment cavity tray system. Both internal (GAIC) and external (GAEC) corner trays comprise factory-jointed twopiece 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.
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.
Refurbishment System The Keystone 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.
When specifying, the following wording is recommended: “provide Keystone refurbishment Cavity Tray system from Keystone Lintels Limited, (+44 (0)1283 200150) to be installed as per manufacturer’s instructions. Trays to be folded, as instructions on tray, to form left and right hand stop-ends”.
Where to Use
Refurbishment Cavity Trays
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 of 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.
Code
Size in mm
Packs of:
RFT
620 x 280
10
Specifying
27
CPD Online: www.keystonelintels.co.uk/cpd
Extended Range
Stainless Steel Lintels The following lintels are also available in 3mm thick stainless steel, grade 304S15. Similar load tables apply for stainless steel (SS) lintels as for galvanised lintels. The stainless steel range is available to suit all cavity widths
S/K (SS)
S/K 215 WIL (SS)
HD/K (SS)
S/K WIL (SS)
HD/K WIL (SS)
SB/K (SS)
SL/K (SS)
B/K (SS)
CFS/K (SS)
X/K (SS)
CFS/K WIL (SS)
SW/K (SS)
BOX/K (SS)
RB/K (SS)
Soffit Lintel
Cant Brick Lintel
Stepped Lintel
A Soffit plate can be supplied on all lintel profiles to suit 50-165mm wide cavities.
The Cant Brick Lintel can be supplied to suit all Lintel profiles for 50-165mm wide cavities.
All cavity Lintels in the Keystone range can be supplied with a 20mm step upon request.
‘h’ nominal
20 95
Roller Shutter Lintels The Roller Shutter Lintel can be supplied to suit all wall constructions and loading conditions. Contact Keystone Technical Department for full specification.
A
B
C
dpc
Dimensions Required:
28
A=
mm
B=
mm
C=
mm
H=
mm
Lintel Length =
mm
H
95
nominal
100
From Europe’s largest manufacturer of Steel Lintels
29
30
Your custom-made world by
Welcome to the wonderful world of Keystone ‘Special’ Lintels. Keystone Lintels is a well-established brand within the construction industry, and renowned for providing lintel solutions to architects, builders, merchants, and end-users. As part of Keystone Group, Keystone Lintels is leading the way in bespoke Steel Lintel design and manufacture. The Technical Team at Keystone are pushing back the boundaries in Steel Lintel design, providing custom-made lintels with short lead-times. For further information on the following lintels or to discuss your ‘special ideas’ please contact our technical department.
31
Full Arch Lintel
R
(clear span) a
c
c
Elevation
Lintel Dimensions:
Wall Construction:
Clear span a =
mm
Outer leaf
mm
Radius R =
mm
Cavity width
mm
End bearing c =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
Segmental Arch Lintel
r (clear span) a
c
c
Elevation
Lintel Dimensions:
Wall Construction:
Clear span a =
mm
Outer leaf
mm
Rise r =
mm
Cavity width
mm
End bearing c =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
32
CPD Online: www.keystonelintels.co.uk/cpd
Venetian Arch Lintel
Elevation
r
(arch span) a2 (overall clear span) a1
c
Lintel Dimensions:
c
Wall Construction:
Overall clear span a1 =
mm
Outer leaf
mm
Arch span a2 =
mm
Cavity width
mm
Rise r =
mm
Inner leaf
mm
End bearing c =
mm
Plaster Key Requirements: (please tick)
Arch Type: (please tick)
Inside only
Full Arch
Both sides
Segmental Arch
None
Parabolic Arch Apex Arch
Support Posts: (if required) Height
mm
Gothic Arch
Apex Arch Lintel
r
c
(clear span) a
c
Elevation
Lintel Dimensions:
Wall Construction:
Clear span a =
mm
Outer leaf
mm
Rise r =
mm
Cavity width
mm
End bearing c =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
33
Parabolic Arch Lintel
To construct a Parabolic Curve
F
1 A
C
E
D
r
B
Draw rectangle ABCD Make DE = DA Make CF = CE Bisect AF to make point 1 Project a right angle off AF at point 1 to find small radius r, and project further to find large radius R
R
r
(clear span) a
c
c
Elevation Lintel Dimensions:
Wall Construction:
Clear span a =
mm
Outer leaf
mm
Rise r =
mm
Cavity width
mm
End bearing c =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
34
CPD Online: www.keystonelintels.co.uk/cpd
Gothic Arch Lintel (Single Radius)
r
(clear span) a
c
c
Elevation Lintel Dimensions:
Radius
Wall Construction:
Clear span a =
mm
Outer leaf
mm
Rise r =
mm
Cavity width
mm
End bearing c =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick)
Radius: (if known)
Inside only
mm
Radius
Both sides None
Gothic Arch Lintel (Double Radius)
r
Small Radius
c
(clear span) a Elevation
c Large Radius
Radius: (if known)
Lintel Dimensions: Clear span a =
mm
Large Radius
mm
Rise r =
mm
Small Radius
mm
End bearing c =
mm
Plaster Key Requirements: (please tick) Inside only Both sides
r
Small Radius
None Wall Construction: Outer leaf
mm
Cavity width
mm
Inner leaf
mm
Double Radius
Large Radius
35
Corner Lintel The Keystone Corner Lintel is supplied as a ‘one piece’ fully mitred and welded structural unit for easy installation.
Section through corner and post supported on substructure
Fully Filled Insulated Cavity
Factory mitred and welded corner lintel Location Spigot
Spot Welded Plaster Key Factory fitted Location Spigot
Steel Corner Post dimension by Keystone Technical Dept.
Steel Corner Post supplied with Lintel Dimensions by Keystone Technical Dept.
Cill notched around post Base Plate bolted to substructure using 12mm dia fixing bolts
DPC stepped across cavity, laid under and turned up back of cill
Cill detail
Heavy Duty Corner Lintel
Base Plate
A
Dimensions Required: A-B =
mm
B-C =
mm
A-C =
mm
Brick Reveal
Brick Reveal Plaster Key Requirements: (please tick)
B
Inside only Both sides None
Wall Construction: Outer leaf
mm
Cavity width
mm
Inner leaf
mm
Support Post: Height
36
C Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
mm
CPD Online: www.keystonelintels.co.uk/cpd
Bow Lintel (Projecting Reveals) Span C Outshot
A
B
D Brick Reveal
Brick Reveal Straight Edge Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Wall Construction:
Dimensions Required: A-B =
mm
Outer leaf
mm
C-D =
mm
Cavity width
mm
Inner leaf
mm
Plaster Key Requirements: (please tick)
Support Posts:
Inside only
Height
mm
Both sides None
Bow Lintel (Non Projecting Reveals) Span C
A
B
Outshot Brick Reveal
D Straight Edge
Brick Reveal
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Dimensions Required:
Wall Construction:
A-B =
mm
Outer leaf
mm
C-D =
mm
Cavity width
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only
Support Posts: Height
mm
Both sides None
37
Square Bay Lintel Keystone provide arches and bow lintels, corner and sun lounge lintels, as well as solutions for splayed and square bay lintels.
Exploded isometric view of Square Bay Lintel supported on substructure
250 Base Plate Post dimensions by Keystone Technical Dept.
350
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Brick Reveal
Brick Reveal
A
D
B
C
Dimensions Required:
Wall Construction:
A-B =
mm
Outer leaf
mm
B-C =
mm
Cavity width
mm
C-D =
mm
Inner leaf
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
38
Support Posts: Height
mm
CPD Online: www.keystonelintels.co.uk/cpd
Splayed Bay Lintel (Projecting Reveals) Brick Reveal
Brick Reveal
A
D To Clients specification
B
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Xยบ
C Base Plate
250
Post dimensions by Keystone Technical Dept.
250
Wall Construction:
Dimensions Required: A-B =
mm
Outer leaf
mm
B-C =
mm
Cavity width
mm
C-D =
mm
Inner leaf
mm
A-D =
mm
A-C =
mm
Support Posts:
B-D =
mm
Height
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
Splayed Bay Lintel (Non Projecting Reveals) Brick Reveal
Brick Reveal
A
D To Clients specification
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Xยบ C Base Plate
B
Dimensions Required:
Post dimensions by Keystone Technical Dept.
250 250
Wall Construction:
A-B =
mm
Outer leaf
mm
B-C =
mm
Cavity width
mm
C-D =
mm
Inner leaf
mm
A-D =
mm
A-C =
mm
Support Posts:
B-D =
mm
Height
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
39
Keystone Sun Lounge Lintel
Did you know? It is universally recognised amongst home owners and house builders that a Sun Lounge is a more practical, user friendly room than a conservatory. Furthermore it is agreed that a Sun Lounge floor area can be included in the overall measurement of your house size, adding much more value to your home. A Sun Lounge Lintel is an easy way to add space at low cost when building a new house, or extending a property. An extra room rather than an add-on, a Sun Lounge is comfortable all year round while allowing you to watch the seasons come and go in comfort.
What does a Sun Lounge offer you? A Sun Lounge will blend with the existing appearance of your home. It’s easy to construct, using materials similar to your house. Also it adds genuine floor space, it is structurally sound and adds value immediately.
Is the Sun Lounge the same as a conservatory? No! A Sun Lounge is more competitively priced than a conservatory, is more visually appealing, is easier to clean, and is not a bolt on “extra”. • Much better heat retention in winter • Protection from the blazing summer sun • Noise reduction associated with rainfall on a conservatory roof
What do Keystone offer? The construction of a Sun Lounge has been simplified by the introduction of an Keystone Lintel. It is a one piece unit which removes the need for local engineering, allows architects to design the Sun Lounge to suit the property, and will keep the cost sensible. The Keystone Sun Lounge Lintel is designed and delivered ready for erection. 40
CPD Online: www.keystonelintels.co.uk/cpd
Spot Welded Plaster Key
Fully Filled Insulated Cavity
Steel Corner Posts Dimensions by Keystone Technical Dept. Includes Base Plate
Factory Fitted Location Spigots
It’s as easy as... 1
3
2
FASTRACK autoCAD files can be downloaded from our website at: www.keystonelintels.co.uk
Standard Sizes: Width (W) Length (L)
The Sun Lounge Lintel can be supplied in any size to suit your requirements
Sun Lounge Int Width (W) Int Length (L) A 3m 3m B 3m 3.6m C 3.6m 3.6m D 3.6m 4m E 4m 4m F 4m 4.6m 41
Standard Sun Lounge Lintel - Construction Data Roof Construction: Slates or tiles to match existing on 25x50mm battens on one layer sarking felt on 38x150mm rafters @ 400mm CRS with 38x50mm battens to U/S of rafters to maintain 50mm airgap within roof construction when incorporating 150mm fibre glass quilt insulation. 50x100mm Ridge Plate shot fixed to T/S ridge beam. 50x100mm Wall Plate securely strapped down to wall using 5x30mm galv ms straps by Cullen or equal @ 1200mm CRS. 100x25mm diagonal bracing positioned both sides of roof. 38x100mm collar ties @ 400mm CRS. 50x250mm hip rafters. TG and V redwood sheeting ceiling painted with Class 1 SSF varnish. All structural timber to be C16 or greater and must be stamped accordingly.
Lintel Specification: Keystone HD/K factory Sun Lounge Lintel supported on MS posts designed by Keystone Tech. Dept. located as indicated on plan.
Structural Rigidity: • Roof Anchorage - First rafter and collar tie to be bolted to main wall at 450mm CRS using Rawl bolts or similar proprietary fixing. • MS support posts and factory fitted Base Plate to be bolted down on top of solid footings built up to 300mm below finished floor level. • Wracking resistance provided using 9mm plywood secured to U/S of rafters and collar ties prior to any decorative finishes. • Where a raised or vaulted ceiling is required a Keystone Ridge Beam Cradle must be used.
Construction Details: Provide 150mm fibreglass quilt insulation between roof rafters and collar ties. Insulation to be carried over top of cavity wall and pushed into soffit box to prevent a cold bridge. Install Cullen G400 eaves ventilators to provide a continuous air path for roof space ventilation between roof and insulation and roof underlay at eaves equivalent to 10,000mm2/m with Cullen G1200 over facia ventilator to provide ventilation to roof space equivalent 10,000mm2/m in accordance with Bld. Regs. Approved Document F2 1995 and or BS 5250: 1989. Fixed in accordance with manufacturers instructions. Provide stepped cavity tray across wall directly above Code No.4 flashing, where new roof abuts wall. Note all lead to be treated with patination oil. Rainwater goods facia and soffit to match existing. RC cill with DPC @ rear, ends and under. Wall DPC located min. 150mm above ground level. 300mm solid blockwork footings. 250mmx600mm concrete foundation. Form new opening from existing dwelling into Sun Lounge to client’s requirements. Provide vertical DPC where Sun Lounge window abuts existing wall. Where new wall abuts existing, new cavity to be continuous with existing cavity. Provide 35mm polystyrene insulation between MS post and against inner leaf where post is inside cavity, to prevent a cold bridge. All glazed panels to doors and side panels with glazing less than 1500mm above floor or ground level to be glazed with safety glass to BS 6206: Class B and C. Provide 300mm cavity wall construction with 60mm Rigid Polystyrene Insulation - Wall ties with insulation clips to be spaced 750mm horizontal and 450mm vertical CRS. Form new external steps @ doorway to comply with current Bld. Regs. Any new heating pipes to be insulated with an insulation of thickness of not less than the diameter of the pipe - insulation to BS 5422:1977. Provide 100mm dia stormwater drain, laid to fall 1:60, drain pipe to be surrounded with 150mm pea gravel. All drain pipes to comply with BS 4660 - connected to existing system.
Specification: Keystone HD/K factory fabricated Sun Lounge Lintel - mitred and welded complete with factory fitted location spigots for easy installation - on MS posts designed by Keystone Technical Dept complete with Base Plates secured to solid footing 300mm below finished floor level. On large Sun Lounges and in exposed locations the Keystone Inverted Support Frame is supplied as specified by Keystone Technical Department. 42
CPD Online: www.keystonelintels.co.uk/cpd
Standard Sun Lounge Lintel - Measurement Sheet
Brick Reveal
Brick Reveal
Base Plate
F
A
Xยบ
250
Post dimensions by Keystone Technical Dept.
Dimensions Required:
E
B
C
D
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
To Clients specification
250
Plaster Key Requirements: (please tick)
A-B =
mm
Inside only
B-C =
mm
Both sides
C-D =
mm
None
D-E =
mm
E-F =
mm
Wall Construction:
A-F =
mm
Outer leaf
mm
A-E =
mm
Cavity width
mm
B-F =
mm
Inner leaf
mm
B-E =
mm
C-E =
mm
Support Posts:
B-D =
mm
Height
mm
Raised Ceiling - Optional extra Exploded Isometric View
Fixing Detail
Keystone Ridgebeam Cradle
Ridgebeam Cradle secured to internal flange of lintel using 2 no. M12 bolts
HD/K factory fabricated Sun Lounge Lintel MS posts designed by Keystone Tech. Dept. c/w Base Plate
Where a Cathedral or Vaulted ceiling is required the Keystone Ridgebeam Cradle is supplied to support the roof structure and resist roof spread.
Footing Foundation
43
Bow Sun Lounge Lintel Exploded Isometric View
Keystone Bow Lintel as specified by Technical Dept., factory fabricated and fitted with location spigots. MS posts designed by Keystone Technical Dept. c/w Base Plate secured to substructure 300mm below finished floor level.
Brick Reveal A
Brick Reveal D
Base Plate Post dimensions by Keystone Technical Dept.
250
250 X
B
C
Y Z
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required. Dimensions Required: mm
Outer leaf
mm
B-C =
mm
Cavity width
mm
C-D =
mm
Inner leaf
mm
X-Y =
mm
X-Z =
mm
Plaster Key Requirements: (please tick) Inside only Both sides None
44
Wall Construction:
A-B =
Support Posts: Height
mm
CPD Online: www.keystonelintels.co.uk/cpd
Venetian Arch Sun Lounge Lintel
Specify: Keystone factory mitred and welded Venetian Arch Square Bay Lintel and posts with factory fitted location spigots for easy installation.
250 Base Plate Post dimensions by Keystone Technical Dept.
350
A
Brick Reveal
B
Brick Reveal
D
C
Arch Span (s)
Keystone Sun Lounge Sample Plans
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Dimensions Required:
Wall Construction:
A-B =
mm
Outer leaf
mm
B-C =
mm
Cavity width
mm
C-D =
mm
Inner leaf
mm
Arch Dimensions:
Support Posts:
Arch Span (s) =
mm
Rise (r) =
mm
Height
mm
Arch Type: (please tick) Full Arch
mm
Segmental Arch
mm
Inside only
Parabolic Arch
mm
Both sides
Apex Arch
mm
None
Gothic Arch
mm
Plaster Key Requirements: (please tick)
45
Apex Sun Lounge Lintel Exploded Isometric View
Steel purlin supporting Wall Plate bolted to framework
Eaves beam supporting Wall Plates bolted to framework
H
SHS Apex gable support frame to be sized by Keystone Tech. Dept. on Base Plates bolted to substructure Main Wall of House A
Brick Reveal
E Brick Reveal
B
C
w
Important Notes: Do not allow for bearing, this will be added at manufacturing stage. Very accurate measurements required.
Dimensions Required: A-B=
mm
B-C=
mm
C-D=
mm
C-E=
mm
Height from top of substructure to underside of lintels (H) External frame width of patio doors if applicable (W) Roof pitch
46
D
mm mm
Brick Arch Sets Information Required
Keystone provide a variety of special lintels and ‘brickwork support systems’. A new addition to the range is Keystone ‘Brick Arch Sets’, where the brick-slips are tapered onto a pre-furbished lintel.
Brick type (r)
Width of joint
Clear Opening (s)
Keystone offer a ‘brick matching’ service where the complete brick arch set is designed and customised to your specific needs. Pre-formed, factory-finished steel lintels by Keystone are cost-effective and less time-consuming on-site. • • • • • • •
Angle of skew (a)
Gothic Arch
Height of brick arch (h)
1 11/2 Other
Type of brick arch
Precision cut bricks Load bearing lintel Lightweight for fast build programmes Optional brickclad soffit Optional centrestone feature Optional insulation Various shapes available
Flat
(r)
Parabolic*
Clear Opening (s)
Gothic* Full
Parabolic Arch
Segmental* Bulls Eye Clear brickwork opening (s) Brick rise (r)*
(r) Clear Opening (s)
Clear Opening (s)
Select from section below if soffit is required returned or non returned - Please tick box
Segmental Arch
100mm
100mm
Galvanised powdercoated arch set
Full Arch (Bullseye)
Non Returned Soffit
(h)
Galvanised powdercoated arch set
Returned Soffit
a
Optional Extras - Please tick box if required
Clear Opening (s)
Flat Arch 11/2 brick deep Brick Centrestone
Clear Opening (s)
t
(h)
a
Stone Centrestone
1. Projecting Top Distance (t)
mm
Clear Opening (s)
Full Arch
2. Projecting Front
Flat Arch
Distance (f)
mm
f
3. Projecting Bottom Distance (b)
mm
b
47
Windposts Windpost Design Keystone Windposts are manufactured from grade 304 stainless steel (grade 316 is available if required). The Keystone Technical Team will provide full product specification and schedules. All three Windpost designs are available in shorter lengths to provide the same level of stability to parapets or below windows, commonly termed Parapet or Spandrel Posts respectively. These posts are designed as cantilevers.
Keystone Windpost Systems U type windpost for cavity installation
Keystone Windposts span vertically between floors to provide additional lateral support for large panels of brickwork or large panels with openings. It is often difficult to provide suitable justification that masonry walls have lateral stiffness and therefore construction would traditionally be strengthened by the addition of thicker walls or by including columns, to effectively shorten the span of the masonry panel.
LP type windpost for installation into the inner leaf of the blockwork
e
U Ti
L50
Tie
5
L7
Tie
Keystone U type windpost shown fixed at the base to concrete and at the top to the underside of a steel beam. A range of top and base connectors can be designed to suit specific project requirements.
L Shear Tie
L10
0T
ie
Keystone manufacture three types of windpost. The U Windpost is installed within the cavity and will normally span between floor structures, with the same principle applying to the DU Windpost. Both designs leave the inner leaf of the cavity wall undisturbed. The LP Windpost is designed to be built into the inner skin of the cavity wall and normally span between floor structures.
DU type windpost for cavity installation
All Keystone Windposts are supplied with specifically designed base and upper connections and fixings. They are also supplied with a suitable number of wall-ties which will vary in relation to the post type used and the cavity width. There are five types: U Tie – For use with U & DU Windposts. L50 Tie – For use with LP Windposts (50mm cavity). L75 Tie – For use with LP Windposts (75mm cavity). L100 Tie – For use with LP Windposts (100mm cavity). L Shear Tie – For use with LP Windposts. L Shear Tie can be supplied with a de-bonding sleeve if the windpost is positioned at a vertical movement joint.
48
CPD Online: www.keystonelintels.co.uk/cpd
Windposts Windpost Types
LP Windpost
DU Windpost
U Windpost
Diagrams show a typical wall construction at intermediate floor level showing the three Keystone Windpost types bolted to a concrete building frame.
Windpost Loadings The loadings quoted for the windposts are derived from an allowable stress value of 181N/mm2 and a deflection limit of span/360 (the lesser of the two resultant figures is used as the quoted figure). Please note the quoted loadings are working/characteristic loads. Keystone Windpost profiles and dimensions.
U Windpost and Ties
LP Windpost and Ties
DU Windpost and Ties
b
b a
t
a t
U Tie
a t
t
L Shear Tie
t
b L50/L75/L100 Tie
U Tie
Proportions and performance of U, DU and LP windposts. Windposts can be made to order at various sizes on a project basis. Post taken as a simply supported beam. SWL’s quoted are assuming adequate base and top fixing to concrete. For other substrates please contact the Keystone Technical Team. 49
Keystone “Special” Projects
Britain’s Most Expensive New Home Lintels: Special Arch Lintels & Colonnade Supports Updown Court, a neo classic Georgian style home designed by US architects John B Scholz, provided enormous opportunities for creative lintel design. Keystone designed and manufactured hundreds of Special Arch Lintels and Colonade Supports throughout this magnificent mansion. We also supplied numerous Standard, Heavy Duty and Extra Heavy Duty Straight Lintels. At £70 million it is reported to be the most expensive new home ever built in Britain.
Keystone Take “Pride in the Job” Lintels: Special Bow & Corner Lintels Keystone supplied bespoke lintel solutions to ‘Knockantern Green’, an NHBC award-winning project. “Patton Homes acknowledges the invaluable support provided by Keystone Lintels, who worked as a member of the site team.” David M. Patton Chairman, Patton Homes
50
CPD Online: www.keystonelintels.co.uk/cpd
Keystone “Special” Projects
Award-winning Quay-stone Lintels: Special Bow Lintels This project received a UK Award for the “Best Use of a Brown Field Site.”
“The Greggs Quay development called for apartments designed to a very high specification. Creative lintel designs helped bring the original design concept to a reality” Mr Colin Stewart Partner, McAdam Stewart Architects
“Too often, using ‘special’ designs in a project is an invitation for delays. Using Lintels from Keystone however gave my site foreman confidence. The steel lintels required for the unusual window head features were supplied correctly and on time.” Mr Des Savage Director, Savage Bros.
Mission Impossible Lintels: Cantilevered Segmental Arched Corner Lintel Keystone produce Special Lintels in 3-5 days... The impossible takes 7!
“Ordering this special cantilevered arched corner was a pleasure. Details like this can often cause expensive delays between site measurement, design and manufacture. Using Lintels from Keystone, we alleviated these problems and have now constructed an entrance which was at first thought to be impossible!” Gerry Gray Contracts Manager, Felix O’Hare Contractors
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Keystone “Special” Projects
Commercial Creativity Lintels: Balcony Support Details on Large Commercial Project
Plans “Keystone’s ability to design and deliver standard and custom made lintels quickly and efficiently has made this job so much easier. A product and service we highly recommend.” Mr S Jones McAleer & Rushe
The Key to the Manor Lintels: Gothic Arch Lintels This private residence is a mixture of medieval inspiration and modern lintel design.
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CPD Online: www.keystonelintels.co.uk/cpd
Keystone “Special” Projects
Curve It Like Keystone Lintels: Special Bow Bay, Arch & Square Bay Lintels Keystone provided a unique lintel solution for this prestigeous development - a ‘bow-bay’ lintel.
“Keystone supplied a bespoke ‘bow-bay’ lintel for this project. We were extremely satisfied with the outcome, and this design has generated much acclaim.” Adam McAteer Kevin Cartin Architects Ltd
Restoration Excellence Lintels: Cantilevered Corbelled Brickwork Support System
“When converting this old dwelling into flats, we discovered the timber brickwork support detail on the second floor had deteriorated badly. After several restoration proposals were considered non-feasible, we called in Keystone. Their engineer made one site visit and came up with this solution. Five days later they delivered the goods. An excellent product with an excellent service.” Arthur Rogers, A & J Rogers
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Keystone “Special” Projects
Access All Areas Lintels: Extra Heavy Duty Flat Parabolic Arch Lintel Three acre housing development sites near busy town centres are hard to find, and all too often have limited access. When Development Architect Roger Sally approached this access problem he contacted Keystone for assistance. “Keystone’s Technical Department designed these 8000mm span Flat Parabolic Arch Lintels to support the apartment above and provide an attractive archway to the landscaped courtyard of townhouses behind.” Roger Sally Teague & Sally Architects
Make a Grand Entrance Lintels: Venetian Gothic Arch Lintel
“This prestigious hotel development required a lot of brickwork support systems and intricate lintel details. Ordering these with Keystone gave our Contracts Manager peace of mind. Once agreed the lintels were delivered to site without delays.” Vincent McGlew HJ O’Boyle
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CPD Online: www.keystonelintels.co.uk/cpd
Keystone “Special” Projects
Every Lintel Helps Lintels: Full Arch Lintels When ‘shopping-around’ for the perfect lintel, ‘check-out’ Keystone - the lintel experts!
Step It Up Lintels: Heavy Duty Corbelled Lintels
“When presented with this corbelled detail in my client’s brief I contacted Keystone’s creative Technical Department. I am delighted with their solution and excellent technical service.” Jennifer Johnston Project Architect, Ostrick & Williams
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Keystone “Special” Projects
Keystone Swing into Action Lintels: Arch, Corner & Bay Lintels
“The prestigious and internationally acclaimed Royal Portrush Golf Club required something special in its design. The help and advice given by Keystone’s Technical Department encouraged me to include some quite complex details. I am delighted with what has been achieved.” Mr Kieran Mullan Senior Partner, GM Design
Thatch Magic Lintels: Special Tapered Arch Lintel Keystone designed and supplied the featurepiece tapered arch on the front of this house, as well as square bay and corner lintels. Their solution for this bespoke arch was technically brilliant removing the need for complicated and expensive conical formwork.
Plans
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CPD Online: www.keystonelintels.co.uk/cpd
Keystone “Special” Projects
Always Accommodating Lintels: Special Bow & Arch Lintels Supplied to Large Commercial Developments
“Ordering the standard and custom-made bow lintels on this project was made easy by using Keystone’s fast and efficient scheduling service. Once agreed, the lintels were delivered to site without any delays.” Mr K Clarke Louisville Properties
“Keystone deliver their lintels quickly and efficiently direct to site. Even the special arched lintels were designed and delivered within five days. This combination of product and service was invaluable to our on-site team.” Mr C Crossley Glenistar Properties
Let the Sunshine In Lintels: Arched Sun Lounge Lintel Supplied to Private Development
“Keystone’s ‘Can Do’ attitude certainly shone through on this project. We had been told that this couldn’t be achieved without building substantial piers at each corner. Keystone provided a lintel solution delivered to site in days.” Colin Smyth Contracts Manager
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Ballyreagh Industrial Estate, Sandholes Road, Cookstown, BT80 9DG Tel: +44 (0)28 8676 2184 Fax: +44 (0)28 8676 1011 Email: info@keystonelintels.co.uk Ryder Close, Cadley Hill Industrial Estate, Swadlincote, South Derbyshire, DE11 9EU Tel: +44 (0)1283 200 150 Fax: +44 (0)1283 223 352 Email: info@keystonelintelsuk.com Unit 30, Rosemount Business Park, Ballycoolin Road, Finglas, Dublin 11 Tel: +353 (0)1 822 3333 Fax: +353 (0)1 822 3366 Email: info@keystonelintels.ie
www.keystonelintels.com
Certificate No FM 21541
The information contained in this brochure was accurate at the date of publication. Keystone Lintels Limited, however, reserve the right, while maintaining the essential performance of the lintels described, to introduce at any time modifications and changes of details as may be deemed necessary to improve the lintels described.