HR Kilns & Fibreglass GRP Pultruded Gratings, GRP Molded Gratings, Glass Reinforced Plastics, GRP Step Covers

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GRP TRENCH BOX

A lightweight shoring solution for excavations up to 1500mm deep with widths from 650mm to 1450mm. The GRP Trench Box panels create a working area of 1500mm wide and a minimum under strut clearance of 570mm to allow services to pass. Due to the soil arch created by the hydraulic struts, GRP Trench Boxes can be set out with a clear space of up to 1500mm between boxes making an efficient solution for longer trench runs.

Designed to withstand a maximum safe working load of 16.5kN/m²,for use in made ground such as soft cohesive and loose granular fill which is generally self-supporting in the short term and where no ground water is present. Use in problematic ground such as very soft clays and silt or peat or in excavations where a high volume of
services are expected to cross the trench is not recommended.

The lightweight equipment can be rapidly assembled by hand where access is limited, without the need for an excavator. The hydraulic struts allow the full process to be achieved safely without the requirement for operatives to enter an unsupported trench.

KEY PRODUCT FEATURES:

Dimensions – 1500mm deep x 1500mm wide
SWL – 16.5kN/m2 (based on hydraulic jack and
soil arching theory)
Weight* – 78kg per unit
Max Trench Height – 1500mm
Trench Width Range – 650mm to 1450mm
Panel Width – 1500mm
Under Strut Clearance – 570mm Min.
Strut Spec 2” aluminium, single acting hydraulic rams
Strut SWL – 60kN
Strut Weight – 560 – 910mm stroke, 5.7kg (empty)
860 – 1400mm stroke, 10kg (empty)
Manufacture – UK manufactured from pultruded
GRP to BS EN 13706
Safety Features – Electrically non-conductive and
fire retardant to ASTM E84 Class 1
Ancillaries – Handrailing, GRP ladders, Lightweight
10 litre bucket pump, slings, hydraulic
release tools