PRECAST CONCRETE LINTELS TO BS EN 845-2/ PRE-STRESSED COMPOSITE LINTELS/ PRE-STRESSED NON-COMPOSITE LINTELS/ REINFORCED LINTELS

Precast concrete lintels to BS EN 845-2/ Pre-Stressed Composite lintels/ Pre-Stressed Non-Composite lintels/ Reinforced lintels

*

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:

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.

* 0.6m 100 x 65mm reinforced lintels are packed in multiples of 108 per pallet.

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.

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.

Types C, D, E, F, K9, G8, U2 are designed to withstand direct imposed loads. Rafters, wall plates and floor joists may be accommodated as directly imposed loads.

products-NC-lintels-loads
BEARING: Minimum of 150mm each side or as directed by the structural engineer.
PROPPING: Propping is not required with this type of lintel.
BRICKWORK: Non-composite lintels do not require brickwork bonded to them. Point loads from girders, trusses, steel beams ect. require to be referred to our Customer Advisory Service.
POSITIONING: Lintels must be placed with wire in correct position. Lintels are marked top.
ORDERING: All sizes listed are normal stock sizes.

All lintels are designed in accordance with –
BS 5977: Part 1: 1981, BS EN 845-2: 2103, BS 8110: Part 1: 1985, BS 8110: Part 2: 1985.

REINFORCED LINTELS:

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