Keystone Lintel Manual

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

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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

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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.