450mm X 450mm POLE Boxes – ( 475mm Overall Depth )

Duct Access Chamber / Draw Box Although it is aimed primarily at the Street Lighting and Traffic Signals industries, it is suitable for most applications where a duct access chamber is required to give access to an adjacent pole, i.e. CCTV or comunications. The robust design means that the boxes are not prone to deformation whilst being backfilled with concrete, unlike some other systems on the market, giving the contractor and client peace of mind. Contractor Benefits The benefits to the contractor are: • Robust Design • Speed and ease of installation • Light weight design • Pre-Trepanned guide holes for easy access • Cost competitive against traditional products • Can be installed with or without concrete surround Recommended Installation Guide The Access Chamber should be bedded on a base of 100mm thick C20 drymix concrete and the base be chamfered to obtain a natural soakaway outlet. Alternatively use a pre-formed base set in no-fines semi porous concrete mix. The sides can be backfilled with dug material, granular material or concrete. Duct inspection chamber are be manufactured from 32mm thick, high density polyethylene and have a smooth inner wall with reinforcing ribs on the external wall for extra rigidity. Assembled Pole Boxes are capable of withstanding a 12.5 tonne wheel load, without the need for structural concrete surround. Boxes are supplued ready made in one size Box Sections come complete with pre-formed knock out sections to accommodate duct sizes of 50mm, 66mm and 110mm outside diameters. Boxes can be supplied with a pre-formed GRP base unit for ease and speed of installation which should be bedded in a no-fines, semi porous, concrete mix to allow any ground water to flow away. The Access box should be bedded on a base of 100mm thick C20 drymix concrete and the base be chamfered to obtain a natural soakaway outlet. Alternatively use a pre-formed base set in no-fines semi porous concrete mix. The sides can be backfilled with dug material, granular material or concrete.