The Manhole Box is always used when wider manholes have to be installed within a working trench.
The trench shoring plate body is designed as a U-form and the wings have a thickness of 0,40 m. Thus, a 0,80 m wide manhole is formed.
Ahead and behind the manhole, normal trench shoring boxes ensure the trench safety. The spindles and accessories are identical to those of the trench shoring boxes.
|Max installation depth:||4.00m|
|Trench width:||2.00 – 5.28m|
|Strut clearance height:||1.69m|
|Mobile and chain excavator:||18 – 30ft|