Repair and Remedial Works to Boardwalk – Retaining Wall and Erosion System
- Removal and treatment of all the decking support steel members for the full extent of the boardwalk. The steel members (fabricated) off-site in factory conditions to minimise environmental risk and improve quality control. Re-assemble the treated steel decking support system onsite with additional steel support members and new steel to steel connections. Repair local sections of limestone retaining wall at location of redundant steel support point.
- Removal of concrete surround on all steel piles and disposal of off-site. Cut down steel piles leaving a 0.8 metre length projecting from the foreshore allowing for connection to the new proposed works. Grinding, blast cleaning, and painting of the exposed steel pile, prior to concrete works.
- Removal of erosion protection system (boulders, concrete, and concrete mattress) in the locality of piles and new columns taking care not to undermine of damage remaining protection system and limestone retaining wall. Provision of beach sand track on foreshore where required to aid access for machinery.
- Construction of the new combined concrete footings for new column around existing trimmed pile and for new columns located adjacent to wall (or from pile to pile). Footings to be constructed below bedrock level (where rock is at foreshore level) to minimise visual impact or at a suitable depth
- Below foreshore taking into account the historical erosion rate of the foreshore.
- Construct new concrete columns from footings to underside of decking with
- GFRP and holding down bolts.
- Reinstate erosion protection system and boulders to match existing (including concrete works and shotcreting).
- Repair works to the limestone retaining wall structure at the turning bay on the western end of Majestic Close.
