Catalogue - Forticrete

Stepoc®

From 1st July 2009 the Civil Engineering products range was integrated into Anderton Concrete, also a CRH company, based in Northwich, Cheshire. For all sales enquiries please call 01606 535300 or email civils@andertonconcrete.co.uk.

Stepoc is a system of highly-engineered and dimensionally co-ordinated building modules which are designed to readily accept both vertical and horizontal reinforcement for use where structural performance is the prime consideration.

Stepoc combines the ease of blockwork with the versatility of in-situ concrete, and yet is faster to apply than both, making it an ideal component in fast-track construction for:

Retaining Walls
Basement Walls
Swimming Pools
Sheer Walls
Laterally-loaded panels
Blast Panels
Storage Bays

The system is available in widths of:

200mm
256mm
325mm

The blocks are laid in a running bond, which automatically creates the correct pattern to produce the 'waterfall' effect. Corners, T-junctions and cross junctions are created using a combination of units and specific data sheets are available to illustrate these.

All sales enquiries for Stepoc should be directed to our Customer Service office on 01606 535300 or email civils@andertonconcrete.co.uk .

Composition and Manufacture:
Stepoc blocks are manufactured to fine tolerances using aggregates which satisfy BS EN 12620:2002 and cement to BS EN 197-1:2000. They are manufactured in accordance with BS EN 15435:2008

Dimensions:
Stepoc blocks are available in the following sizes:

400 x 200 x 225mm
400 x 256 x 225mm
325 x 325 x 225mm

Weight:
Stepoc average weights per block are as follows:

400 x 200 x 225mm: 17.3kg
400 x 256 x 225mm: 19.8kg
325 x 325 x 225mm: 19.0kg

Characteristic Compressive Strength (f_k):
200mm - 14.0 N/mm²
256mm & 325mm - 18.0 N/mm²

Manufacturing Tolerances (mm):
Height: +2, -2
Length: +2, -2
Width: +2, -2

Concrete Infill:
200mm - 0.11m³/m²
256mm - 0.15m³/m²
325mm - 0.19m³/m²

Fire Resistance:
Minimum fire resistance: 2 hours. For specific applications refer to BS 8110 Part 1 1997.

Resistance to Frost Damage:
The Stepoc system is resistant to the freeze-thaw conditions that are likely to occur below a damp proof course.

Resistance to Sulphate Attack:
Stepoc has adequate resistance to Class DS-3 sulphate ground conditions.

Step by step Construction Sequence

The concrete foundation needs to be level.
Vertical reinforcing bars are cast into the foundation at specific spacings.
The first course is bedded on mortar.
The horizontal reinforcing bars are tied to the vertical bars using tie wire.
The blocks are stacked dry to the height of the first pour.
The vertical faces should be checked on alternative courses for plumb.
Concrete is preferably pumped into the blocks, using a minimum C35/28 concrete with a minimum slump of 150mm and a maximum aggregate size of 10mm

Alternative methods to pumping may be used, provided that the fresh concrete can flow in a similar manner to pumped concrete and that the method of transportation and placing does not incur an additional risk to the stability of the wall. Mechanical vibration is unnecessary, and should not be used.

For further details please contact the Anderton Technical department on 01606 530159 or 07884 234909

Details of recent projects completed using Stepoc:

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