Technical SPECIFICATIONS
The World Tech Center (WTC) embodies the pinnacle of modern engineering, with technical specifications and structural improvements that ensure safety, sustainability, and resilience. Each Twin Tower features a robust 1-meter-thick central core crafted from ultra-high-performance concrete (UHPC), offering exceptional strength with compressive strengths exceeding 150 MPa, far surpassing traditional concrete.
The floor structure relies on A514 high-performance structural steel I-beams (1-meter web depth), clad with advanced fireproofing compounds that expand under heat to protect against fire for up to six hours—exceeding Chicago’s stringent building codes. Liquid tuned mass dampers located near the top floor, each holding 1,000 tonnes of water in steel tanks, counteract wind-induced sway and double as firefighting reservoirs, with water pumped to extensive sprinkler and foam systems across all floors. The towers’ 26 local and 12 express double-decker elevators, designed larger than typical, enhance efficiency, while four pressurized stairwells and a dedicated fire service elevator ensure rapid evacuation.
Structural innovation extends to the 1969-foot antenna tips, symbolizing the moon landing, and anti-aircraft lasers on the roofs, providing a cutting-edge defense against airborne threats. Powered by 100% renewable energy through hydrogen fuel cells and solar panels, the WTC recycles its waste and minimizes its carbon footprint, setting a new standard for sustainable large-scale infrastructure.
Engineering Drawings (more to follow)
Building Statistics
Twin Towers
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Height: 460 m (1510 ft) to roof (both towers)
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Spire height: 600.15 m (1969 ft)
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Tower width (both sides of square): 63 by 63 m (206.7 ft)
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Floors: 110 (including 5 basement levels)
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Estimated mass: 450,000 metric tonnes
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Core dimensions: 29 by 41 m (95 by 134 ft)
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Number of elevators: 36 doubled decker, 4 single deck.
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Number of stairwells: 4
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Typical ceiling height: 3 m (10ft)
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Typical floor depth thickness: 1m (3.3 ft)
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Foundation depth: 30 m (101 ft)
General information
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Number of major buildings: 8
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Auxiliary buildings: 5
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Overall campus site footprint: 412 by 350 m (1148 by 1350 ft) or 35 acres
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Trees: at least 100
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Estimated number of future tenants: 600-800
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Power supply method: hydrogen fuel cell and solar, with offsite facility
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Self-recycling and energy recovery facilities
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Materials: Ultra-High Performance Concrere (UHPC) for core, ASTM-A514 and -A992 structural steel.
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Fireproofing: Intumescent materials with minimum 4 hours rating.
Documents
General tower structural floorplan with dimensions
Horizontal box beam on tower's perimeter
General tower structural and external elevations
Inner floor longitudinal beam
Towers' vertical concrete-filled perimeter box column
Lateral beam (type 4)
Example Laboratory and office/workshop floor plan with safety corridor
Core's corridor beam connector
Structural Engineering CAD work in CATIA V5
Assembly
Steel members assembly
Overview assembly
UHPC core and floor plates
Simple Finite Element Analysis (FEA) test on vertical box column (without concrete infill or beams atached)