325 Basement Block

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.

The new 325 Basement Block enables the fast construction of single skin cantilever retaining walls up to 3.8 metres high and, at 325mm wide, it is dimensioned to carry 2 x 100mm leaves plus insulation and cavity. Taller walls may also be constructed subject to design parameters.

Available in full length; half-length and plain end/corner units, 325 Basement Block is laid to half running bond and yet retains all the smooth filling benefits of the traditional system.

325 Basement Block's unique design enables horizontal reinforcement to be placed adjacent to either block face, or both if required, to ensure that maximum strength is achieved just where it's needed. And, at less than 20kg, each 325 Basement Block is well within the HSE guidelines for a single man repetitive lift. Proven in use on applications the length and breadth of the UK, this is a truly Modern Method of Construction.

Designing with Stepoc

Area of reinforcement (mm²/m) for various bar diameters to coincide with void pattern.

Specification

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 to BE EN 15435:2008

Dimensions: 325 x 325 x 225mm


Weight:  19.6kg

Characteristic Compressive Strength (fk): 18.0 N/mm²

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

Concrete Infill: 0.19m³ per m² of wall

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.