Box Systems (Trenching & Shoring) / 9
Manhole Boxes GAP’s manhole boxes are designed for use in conjunction with our manhole shutters, allowing fast manhole construction without the need for a worker to enter the unsupported excavation.
Max. Lateral earth Pressure
Clearance Between Struts
Weight of Extension Panel
Manhole Box Type
Max. Trench Depth
Weight of Base Panel
Int. Trench Width
Standard 2.0m 2000mm 1532mm / 4520mm 40kN/M 2
3000mm 555kg
220kg
Backhoe 2.5m 2298mm 1485mm / 3285mm 20kN/M 2
2900mm 960kg
580kg
Standard 2.5m 2212mm 1550mm / 4520mm 55kN/M 2
5500mm 1156kg
830kg
Standard 3.0m 2712mm 1550mm / 4520mm 45kN/M 2
5500mm 1278kg
910kg
Standard 3.5m 3212mm 1550mm / 4520mm 40kN/M 2
5500mm 1395kg
985kg
Standard 4m 3749mm 3030mm / 4510mm 35kN/M 2
5500mm 1812kg
1325kg
Standard 4.7m 4449mm 3030mm / 4510mm 35kN/M 2
5500mm 1982kg
1440kg
Edge Protection for Boxes A lightweight barrier system used to provide enhanced safety on site, helping to prevent falls into excavations. Often used with GAP’s range of trench boxes, drag boxes and manhole boxes.
• Kickboards to prevent debris falling into excavations • Not intended to restrain or support excessive loads • Weight of Edge Protection Barriers: 9.2kg to 40.5kg • Size lengths: 2000mm, 2500mm, 3000mm & 3500mm
Edge Protection Type
Panel Height
Standard Box Backhoe Box
1000mm 1000mm 1000mm 1000mm 1000mm
Standard Manhole Box (2.5m) Backhoe Manhole Box (2.5m)
Drag Box (5.0m)
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