Precast concrete lintels to BS EN 845-2

Pre-stressed composite / pre-stressed non-composite / reinforced

Section dimensions: 65 x 100mm
Weight per linear metre: 15.5kg/m

Section dimensions: 100 x 150mm
Weight per linear metre: 34kg/m

Section dimensions: 150 x 100mm
Weight per linear metre: 34kg/m

Section dimensions: 215 x 100mm
Weight per linear metre: 51kg/m

SWIPE LEFT TO VIEW ENTIRE TABLE
COMPOSITE LINTEL maximum uniformity distributed load kN/m
Lintel length (m) 0.90 1.05 1.20 1.35 1.50 1.80 2.10 2.40 2.70 3.00
Effective span (m) 0.75 0.90 1.05 1.20 1.35 1.65 1.95 2.25 2.55 2.85
Clear span (m) 0.60 0.75 0.90 1.05 1.20 1.50 1.80 2.10 2.40 2.70
65 x 100mm 5.9 4.8 4.0 3.4 2.9 2.2 1.8 1.4 1.2 1.0
65 x 100mm 2 courses 19.9 13.8 10.1 7.7 6.0 4.0 2.8 2.1 1.6 1.2
65 x 100mm 5 courses 26.9 18.6 13.6 10.4 8.2 5.4 3.8 2.9 2.2 1.7
65 x 100mm 8 courses 40.8 28.3 20.8 15.9 12.5 8.3 5.9 4.4 3.4 2.7
SWIPE LEFT TO VIEW ENTIRE TABLE
The table above is for safe working, uniformly distributed loads applied to the composite construction in kN/m exclusive of self weight of brickwork within the construction and the weight of the lintel. The design is based on the brickwork having a limiting crushing strength of 10.4 N/mm2.
Section h x w (mm) 65 x 100
Weight/linear metre (kg) 16
Linear metre/tonne 62
No per pack 27*
* 0.6m 100 x 65mm reinforced lintels are packed in multiples of 108 per pallet.
SWIPE LEFT TO VIEW ENTIRE TABLE
NON-COMPOSITE LINTEL maximum uniformity distributed load kN/m
Lintel length (m) 0.90 1.05 1.20 1.35 1.50 1.80 2.10† 2.40 2.70† 3.00 3.30† 3.60
Effective span (m) 0.75 0.90 1.05 1.20 1.35 1.65 1.95 2.25 2.55 2.85 3.10 3.40
Clear span (m) 0.60 0.75 0.90 1.05 1.20 1.50 1.80 2.10 2.40 2.70 2.90 3.20

150 x 100mm
18.0 14.7 12.3 10.5 9.1 7.0 5.6 4.6 3.8 3.2 2.7 2.3

100 x 150mm
11.9 9.7 8.1 6.9 6.0 4.7 3.8 3.1 2.6 2.2 1.9 1.6

215 x 100mm
29.9 24.9 21.3 18.5 16.3 14.8 13.3
SWIPE LEFT TO VIEW ENTIRE TABLE

The table above is for safe working, uniformly distributed loads applied to the non-composite lintels in kN/m exclusive of the weight of the lintel.

† 215 x 100mm lintels in 2.1m, 2.7m and 3.3m lengths are non-stock items.

Section h x w (mm) 150 x 100 100 x 150 215 x 100
Weight/linear metre (kg) 34 34 51
Linear metre/tonne 29 29 19

PRE-STRESSED COMPOSITE LINTELS

These lintels utilise the composite action of the concrete and brick/blockwork together to provide their load-bearing capacities as shown in the table.

Three courses of brickwork are equivalent to two courses of blockwork. As the brickwork mortar matures, lintels of over 1200mm spans should be propped at 1200mm centres. Bearings at each end must be at least 150mm. A damp-proof course, when used, must be strong and plastic enough to avoid cracking and be placed so as not to break the lintel/blockwork bond. Ideally the d.p.c. should not be included in the composite wall joist at all, but if essential then it should be only tucked in 30mm.

PRE-STRESSED NON-COMPOSITE LINTELS

Where a higher load-bearing capacity is required, or there is insufficient brickwork above to allow adequate composite action, non-composite lintels are the solution.

No propping is necessary during construction and also wall plates, trusses and floor joists can be accommodated as directly imposed load in accordance with the table opposite. Bearings at each end must be at least 150mm and for lintels of over 3 metres, 200mm long bearings are recommended.

Non-composite 215mm x 100mm lintels must be installed with the triangle of reinforcement in the bottom the lintel.

REINFORCED LINTELS

Reinforced 0.6m 100mm x 65mm lintels are normally used to bridge services in blockwork foundations.


DOWNLOAD
PDF DATA SHEET
FOR THIS PRODUCT
PDF Data Sheet

All products are available ex works.
Prices on application.
Telephone our sales office for further information and quotations.