Strut Designation Overall Length (mm) Pin to Pin Length (mm) External Box Width (mm) Internal Box Width (mm) Weight (kg) Allowable axial compressive force (kN) Allowable axial tensile force (kN)
1.25m 1250 1168 3008 2788 75

+500.0

(FOS = 1.6) 

-266.0

(FOS = 1.6)
1.75m 1750 1668 3508 3288 90
2.25m 2250 2168 4008 3788 110

    Every Hi-Clear Manhole Box hire is backed by Groundforce’s technical expertise, with our engineering team on hand to advise on the right configuration for your soil type, excavation depth, and size.

    We manage the full process in-house, from technical consultation through to delivery and collection using our FORS-accredited transport fleet, ensuring your equipment arrives safely, on time, and ready to use.

    With 18 depots nationwide, our customers benefit from availability, reliable stock, and support throughout their hire period.

    Groundforce also supply a wide range of other shoring box systems, including the Standard Trench Box.

FAQs

Related Files

(2.21 MB)
Manhole Box Technical Literature
(3.85 MB)
Manhole Box User Guide
(1.53 MB)
Quick Start User Guide for Manhole Boxes
(3.18 MB)
Box Spindles and Struts Technical Literature

Trench Boxes: Typical Installation Methodology

This quick and easy method ensures ground stability within a trench and helps minimise the excavation area to avoid damage to neighbouring structures and utilities in the ground. This methodology is best suited for trench boxes with shorter struts, if you use a trench box with long struts then other methods may be more suited, if you have any questions on different methods you can use contact our technical department.

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