House Inspection Chamber

The Marshalls Civils & Drainage precast concrete household inspection chambers are available in a variety of depths, with tongue and groove joints to BS EN 1917:2002/BS 5911-4:2002.

The concrete inspection chambers are economic and versatile and meet the demands of domestic drainage installation. They are easily handled and excavation below ground level is reduced to a minimum.

Metal cover slabs

Top sections for 750mm x 600mm and larger chambers act as reducing slabs, enabling standard 600mm x 450mm covers to be fitted irrespective of the size of chambers involved.

To provide concrete top section for 1000mm x 675mm requires a top section for metal household inspection cover and frame 1000mm x 675mm i.e. reducer or a top section for concrete cover 600mm x 450mm and concrete cover slab. Please see the metal cover specification table for details.

Concrete cover slabs

House Inspection concrete cover slabs are supplied to suit the top sections, and are 695mm x 540mm overall, 60mm thick and weigh 55kgs.

Marshalls Civils & Drainage house inspection chambers (HICs) can be jointed quickly and easily with bituminous or butyl compounds providing a watertight seal without the use of a concrete surround. For depths in excess of 1.5m the use of a concrete surround is recommended. Please see the concrete cover specification table for further details.

• Made to BS EN 1917:2002/BS 5911-4:2002.
• Meet the requirements of domestic drainage installation.
• Can be supplied banded.