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Victor Buyck Steel Construction
Canary Wharf Building HQ2
Presentation Agenda
Project Over-view
Canary Wharf Standards
Interface concrete to steel
DLR Structure
Project Overview
• 1.65m sq ft of which approx 1m nett lettable office space
• 33 storey tower
• 9 storey podium building
• 5 storey air-rights structure over the DLR
• 3 storey concrete basement
Project Overview
• Simple & elegant massing• Uncompromising strength and
clarity
European Headquarters for Lehman Brothers
Project Overview
Adjacent West Winter Garden compliments the building
Project Overview
Curtain Wall:
• Delicate interplay between transparent glass and tapestry of stainless steel elements
• Provides texture and formal order
• Density of stainless steel elements increases towards top to form crowning gesture
Project Overview
• Concrete core, steel gravity frame
• Steel braced satellite cores in podium
• 9m x 13.5m steel grid
• 4.15m storey height increasing to 4.45 on trading floors
• Interface with HQ1, WWG, RT3, and station
Canary Wharf Standard
• Clear span column-free interior• separate structural and services
zones • Orthogonal corners (no curves!)
Primary objective is to provide space people will want to lease
Canary Wharf Standard
• ‘Standard’ false floor and floor to ceiling heights
• 130mm lightweight slab provides 90 minutes fire separation
• Separate structure & service zones
• Structural beam depths constrained to 470mm
• Plate Girders vs Trusses vs Westok beams etc.
Canary Wharf Standard
Key Design Issues:
• Core Issues – steel vsconcrete
• Floor vibration on long span beams
• Perimeter beam deflections – curtain wall stack joint is often critical design criteria
25 Canada Square (DS5)
Concrete/Steel Interface
Primary Issues:
• Overlap & sequencing• Connection Detail• Craneage
25 Canada Square (DS5)
Concrete/Steel InterfaceCorbel Details
HQ2
Concrete/Steel InterfaceCast-in Plate Detail
HQ2 Extension over DLR
LAUNCH DATA
• Maximum Launch Weight 468 Tonnes
• Skates 12 No 65 Tonne Capacity
• Maximum Recorded Load 22 Tonnes
• Maximum Coeff of Friction 5%
• Jack Capacity 2 x 15 = 30 Tonnes
• Typical Launch Speed 12m in 3 hours