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
|PANEL LENGTH - L(m)||PANEL HEIGHT - H(m)||PIPE CLEARANCE LC(m)||PIPE|
|MAX. PERM. EARTH PRESSURE (kN/m2)||WEIGHT PER BOX (kg)|