Manhole Box

A ground support system for forming a concrete manhole.

The Conquip 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.

The manhole boxes are available in a range of sizes: 2.5m, 3.5m and 4.0m external length. It is generally suitable for trench depths of up to 5.18m.

  • Available in a range of sizes: 2.5 metres, 3.5 metres and 4 metres external length
  • 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 TL103-00011 2500mm See Incremental Struts 2560mm 3000kg 128kN/m²
Extension Box TL103-00012 2500mm See Incremental Struts 1310mm 1702kg 128kN/m²
Base Box TL103-00007 3500mm See Incremental Struts 2560mm 3600kg 73kN/m²
Extension Box TL103-00008 3500mm See Incremental Struts 1310mm 2002kg 73kN/m²
Base Box TL103-00009 4000mm See Incremental Struts 2560mm 3900kg 53kN/m²
Extension Box TL103-00010 4000mm See Incremental Struts 1310mm 2162kg 53kN/m²
Base Box TL103-00001 3210mm See Variable Struts 2560mm 3000kg 128kN/m²
Extension Box TL103-00002 3830mm See Variable Struts 1310mm 1702kg 128kN/m²
Base Box TL103-00003 3830mm See Variable Struts 2560mm 3600kg 73kN/m²
Extension Box TL103-00004 3830mm See Variable Struts 1310mm 2002kg 73kN/m²
Base Box TL103-00005 3830mm See Variable Struts 2560mm 3900kg 53kN/m²
Extension Box TL103-00006 3830mm See Variable Struts 1310mm 2162kg 53kN/m²

*Excluding Struts

ITEM STRUT SECTION WORKING WIDTH WEIGHT STRUT RESISTANCE
Incremental Struts 280mm 1565mm 7kg 164kN
Incremental Struts 380mm 1665mm 9.5kg 164kN
Incremental Struts 480mm 1775mm 12kg 164kN
Incremental Struts 780mm 2065mm 21kg 164kN
Incremental Struts 780mm x 2 2165 – 2765mm 41kg 164kN
Incremental Struts 780mm x 3 2965 – 3465mm 61kg 164kN

 

ITEM STRUT EXTENSION WORKING WIDTH WEIGHT STRUT RESISTANCE
Variable Struts None 1990 – 2290mm 71kg 455kN
Variable Struts 500mm 2490 – 2790mm 91kg 240kN
Variable Struts 500mm x 2 2990 – 3290mm 102kg  230kN
Variable Struts 500mm x 3 3490 – 3790mm 113kg 225kN
Variable Struts 2000mm 3990 – 4290mm 124kg 220kN
Variable Struts 2500mm 4490 – 4790mm 135kg 220kN