Core strengthening works to Blocks A and B, roof works to Block A and reinforced concrete works to Block C.
Block A Core Strengthening works
RC infills to existing riser openings in existing slabs.
RC infills to existing mezzanine hanger holes.
Reinforcement and concrete infill floor slabs to demolished staircase from level 5 to level 15.
RC to new floor slab and staircase to core area from level 5 to level 15.
RC infill to existing opening in core wall to staircase from level 1 to level 15.
Reinforcement and concrete infill floor slabs to demolished 2 car lift shaft from level 6 to level 15.
Reinforcement and concrete infill floor slabs to demolished goods lift shaft from level 6 to level 15.
RC to new floor slab at mezzanine level.
Temporary working platforms within existing shafts to Levels 5-15 for steel and concrete demolition works to be safely undertaken.
Platforms across the entire level to be completed concurrently where possible.
Temporary waterproofing measures to Level 15 slab after the roof has been demolished.
New roof, upstands and plinths.
New columns and walls from 16 to roof.
New level 16.
Extend columns and walls from 15 to 16.
Backprop levels 13 + 14.
Infill works to level 1.
Block B and Block C RC works
The works comprise the supply and installation of in-situ and precast concrete works to Blocks A, B and C.
The works to the existing basements (B2, and B1) are considered to be site wide to all blocks.
The extent to which new concrete works in basements B2 and B1 are required, these works will be undertaken with temporary propping to the existing basement walls in place.
Block A structure above ground floor is a retained structure. Any works to B2, B1, Ground and 1st Floors of Block A will be undertaken with the retained structure above.
Block B is a completely new steel framed building from B2 to level 7 Roof with in-situ concrete core, and composite concrete/metal deck floor slabs. Block C is a completely new reinforced concrete framed building from B2 basement level to level 3 Roof.