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Description

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.

General information
Finish

Smooth

Polished.

Textured

Material

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

Uniclass 2015 Internal stair systems (Ss_35_10_40_42)
Specification data
Product Reference

In-situ Concrete Staircase

Design

As drawing

Insert reference.

Thickness

Insert requirement, 100 mm minimum.

Finish

Smooth

Polished.

Textured

Colour

Basalt

Black

Cool grey

Cream buff

Dark grey

Henley buff

Imperial grey

Iron grey

Light natural

Mayfair grey

Moss green

Off white

Oyster white

Stone buff

Walnut

Special order

Insert RAL colour requirement.

Sealer

Gloss

Matt

Standard.

Satin

Standard product features

Material:

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.

Reinforcement:

High yield, high bond bars complying with the requirements of BS 4449 and BS 4466.

Consistence class:

S3.

Chloride class:

CL 0.40.

Drying shrinkage (maximum):

0.075%.

Product Options

Design:

Lazenby can advise on spiral, curved or straight staircases, with or without landings.