The design structural loadings are specified on the Design Loads tab, the standard stabilised vertical loadings applied between ducts: Walkways: 1.50kN/m, Fingers: 1.00kN/m
The system has a minimum unladen freeboard of 500mm.
A lighter construction for the less extreme conditions experienced in sheltered and inland waterways. Each component has a welded steel frame structure comprising standard sections and a specially rolled edge section. The frames are hot dip galvanised in single sections to BS EN ISO 1461:1999.
Hardwood decking with a machined anti slip profile is provided as standard.
In addition to hardwoods a range of alternative decking options are available including, treated softwoods, synthetic boards manufactured from re cycled plastics and anti slip deck panels with a bonded aggregate surface.
Walkways are designed for fitting Intermarine standard cast aluminium cleats at 1m centres. Fingers up to 7m long have 4 No. cleats fitted as standard and fingers of 8m and longer have 6 No. The cleats have a 2.5 tonne breaking load. Intermarine heavy duty cleats with a breaking load of 5 tonnes can be fitted to the walkway by prior design.
Service ducts are provided down both sides of all walkways as standard. The duct size is 220×9 0mm deep.
Duct covers are anodised aluminium in 2m sections. A continuous PVC service support tray can be provided in the duct as an optional extra