AL Lintels are able to offer a vast range of concrete lintels from stocked Pre-Stressed Concrete sections* to bespoke Pre-Cast and fairfaced sections.
Lintels are manufactured largely by the Slip-Form Method with the following materials specification applying to them:
Concrete: Cube strength = 50N/mm2 at 28 days.
Cement: Portland Cement to BS 12.
Aggregates - crushed rock: Sintered P.F.A and washed sand.
Prestressing Strand on Pre-Stressed concrete lintels: 9.3 dia. and 7.9 dia., wire strand to BS 3617, 1971.
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Lighter to handle than conventional prestressed lintels.
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Not dependent upon composite action with the brickwork.
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Most Supreme textured lintels do not need strutting.
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Lightweight aggregate concrete has a greater resistance to heat transmittance than dense aggregate concrete.
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Quality and strength are maintained by strict supervision and the use of modern machinery.
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*Pre-stressed concrete section have wire strand embedded in each section.

