Lightweight Manhole Box

A lightweight trench support system for forming a concrete manhole.

The Conquip Lightweight Manhole Box is a simple to assemble, two sided trench lining support system designed to be installed by an excavator using the ‘dig and push’ technique, or by simply carrying out the excavation and then lowering each box into place.

It is for use with smaller excavators or potentially backhoe excavators.  The manhole box is available in approximately 3 metres length and is is generally suitable for trench depths of up to 3 metres.

For more products, visit the Trench Shoring page.

  • Suitable for trench depths of up to 3 metres and trench widths of up to 5 metres (using Conquip Variable Struts)
  • Designed for use with both Conquip Incremental and Conquip Variable Struts
  • Manufactured from high quality British and European steel.
  • Can be supplied with a full range of suitable lifting and extraction chains, edge protection and trench access accessories.
ITEM PRODUCT CODE LENGTH WORKING WIDTH HEIGHT WEIGHT* LIMIT STATE DESIGN LOAD
Base Box TL104-00013 2500mm See Incremental Struts 2000mm 1225kg 23.5kN/m²
Extension Box TL104-00014 2500mm See Incremental Struts 1000mm 840kg 23.5kN/m²
Base Box TL104-00015 3000mm See Incremental Struts 2000mm 1300kg 22.5kN/m²
Extension Box TL104-00016 3000mm See Incremental Struts 1000mm 900kg 22.5kN/m²

*Excluding Struts

ITEM STRUT SECTION WORKING WIDTH WEIGHT STRUT RESISTANCE
Incremental Struts 280mm 1375mm 7kg 164kN
Incremental Struts 380mm 1475mm 9.5kg 164kN
Incremental Struts 480mm 1575mm 12kg 164kN
Incremental Struts 780mm 1875mm 21kg 164kN
Incremental Struts 780mm x 2 1160 – 1760mm 41kg 164kN

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