Standard Engineering Specification
All lighting columns are to be supported by a steel screw piling system designed and certified in accordance with AS4100 and AS2159. The screw piling system supporting the specified lighting columns must be capable of achieving the following design parameters.
Ultimate moment capacity kN/m (refer to table on technical drawing or product specification table). Ultimate sheer capacity kN (refer to table on technical drawing or product specification table) The screw piling system is required to be fitted with replaceable hold down bolts attached to the screw pile assembly to enable adjustment of the lighting columns for vertical tolerance.
The central shaft and welded figments are to be capable of withstanding the required installation torque without deformation. The screw pile is to incorporate at least one (1) base helix and a base mounted point attack bit to centralise the screw pile during installation. (The shaft cut at a 45° angle will not be accepted.)
A reinforced cable entry slot of sufficient size to accommodate the specified electrical conduct is to be provided. The cable slot entry is to be a minimum of 400mm in depth from the finished ground surface after installation.
A drive plate is to be provided welded to the top of the screw pile shaft subject to safely engage the installation equipment and capable of withstanding the required installation torque.
The installation drive plate is to be utilized to connect the screw pile to the lighting column. The design of the screw piling system is to be such that the screw pile is prevented from unwinding in the ground after installation.
Written certification by a registered professional engineer is required stating compliance with the relevant design parameters and compliance with the relevant code.