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In-situ Polished Concrete Staircase

Verified by manufacturer 6 months ago

Lazenby

Structural grade cast in-situ concrete staircase with a polished finish to the treads. Can be laid as a topping over an existing sub base or as a free standing structure.

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Application

Formwork is constructed on site to the size and dimensions specified. Smooth faced ply boards are used on all surfaces that will be cast face.

Steel reinforcement (to structural engineers spec) is then installed and tied into place.

The concrete is poured into the formwork. Treads are finished by hand and can achieve a polished finish. All surfaces which are not exposed will be left with a cast face finish. A poker is used to vibrate the concrete and remove large pockets of air.

Following a curing period the formwork can be removed and the surfaces sealed.

Description

Structural grade cast in-situ concrete staircase for internal use.


Features and benefits:

  • 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.
  • Provide a continuation of a polished concrete floor between levels.
  • Formwork, steel and concrete all set up and installed in-situ.
  • Minimum thickness 100mm
  • Various nosing details can be incorporated into the treads if required.

General information

Color

Finish

Matt

Satin

Gloss

Material

Concrete

Guidance for specification option:

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.

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Ss_35_10_40_42 Internal composite material stair systemsPrimary

CAWS

L30/20 Stairs

L30/270 Stairs

L30/30 Proprietary stairs

L30/310 Proprietary stairs

Specification data - Internal composite material stair systems

Treads

-

Material

Concrete.

Guidance for specification option:

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.

Design

As drawing.

Guidance for specification option:

Insert reference.

Manufacturer guidance

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

Thickness

Guidance for specification option:

Insert requirement, 100 mm minimum.

Colour

Basalt.

Black.

Cool grey.

Cream buff.

Dark grey.

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Sealer

Gloss.

Matt.

Guidance for specification option:

Standard.

Satin.

Reinforcement

High yield, high bond bars.

Guidance for specification option:

Complying with the requirements of BS 4449 and BS 4466.

Consistence class

S3.

Chloride Ion content

CL 0.40.

Manufacturer guidance

(Chloride class).

Shrinkage

0.075%.

Manufacturer guidance

Drying shrinkage (maximum).

Finishes

Smooth.

Guidance for specification option:

Polished.

Textured.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recyclability

Can be broken down and recycled

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