Structural grade cast in-situ concrete staircase for internal use.
Structural grade cast in-situ concrete staircase for internal use, available with a polished or textured face. Surfaces sealed to reduce staining. Cast to individual site requirements, available stand-alone, cantilever, exposed and stepped soffit.
C28/35 to C50 self-compacting concrete to BS EN 206-1 and BS 8500-2
Cement: CEM 1 to BS EN 197-1, minimum cement content of 330 kg/m³, contains GGBS and PFA cement substitute up to 30%
Aggregate: Maximum of 20–30 mm dependent on the desired effect, with 45–48% fine aggregate
Additive: Water reducing admixture (WRA) or superplasticizer
L30/30 Proprietary stairs
In-situ Concrete Staircase
Insert requirement, 100 mm minimum.
Insert RAL colour requirement.
Standard product features
C28/35 to C50 self-compacting concrete to BS EN 206-1 and BS 8500-2.
High yield, high bond bars complying with the requirements of BS 4449 and BS 4466.
Drying shrinkage (maximum):
Lazenby can advise on spiral, curved or straight staircases, with or without landings.