Drainage and services below footprint Waterproofed lift pits
Cast in HD bolt assemblies for steel frame columns
Construct 4nr retaining walls including external works wall ï Design and construct 3nr. lift pits using waterproofed concrete
Supply and install under-slab drainage (foul and stormwater)
Supply and install proprietary gas venting system under structural slab Proprietary anti-heave precautions
