Introduction of WTC Fig 1 World Trade Centre Towers Before Attack (Associated Press photo)
Introduction of WTC
Introduction of wTc Construction of WTC began 0nAug.5,1966. They were officially opened 0nApr.4,1973. They were destroyed in a terrorist attack on Sep.11,2001
Introduction of WTC Construction of WTC began on Aug. 5, 1966. They were officially opened on Apr. 4, 1973. They were destroyed in a terrorist attack on Sep. 11, 2001
The details of WTC West Eas Fig.2 Site Plan of World Trade Centre Development Showing Location of the Two Towers
The details of WTC
The details of WTC Each tower is 411m high, 63.5m x 63.5 m square on plan (h/b=6.5), 24m x 24m in core tube, with 110 stories in each tower
The details of WTC Each tower is 411m high, 63.5m x 63.5 m square on plan (h/b=6.5）， 24m x 24m in core tube, with 110 stories in each tower
Introduction of wTc In each tower, the effective floor area is 319000m2 (Building area is 443500m2,72%)and the steel work of 87000T was used, (about 196kg/m2)
Introduction of WTC In each tower, the effective floor area is 319000m² (Building area is 443500m², 72%) and the steel work of 87000T was used, (about 196kg/m²)
The details of WTC 720 中0 Fig.3 Isometric View of Building (from [1]) The numbers in the figure are taken from [1] and denote: 13-Perimeter frame 17-Core box columns 450 mm square 20-Floor slab
The details of WTC
Structural type: Tube in tube tower steel structure Vertical subsystem: Outside framed tube inside core tube Horizontal subsystem: Beam floor subsystem
Structural type: Tube in tube tower steel structure Vertical subsystem: Outside framed tube + inside core tube Horizontal subsystem: Beam + floor subsystem
Vertical subsystem: Outside framed tube is formed by four facades. Each facade: 56 box-sectional column spaced with 1.02m center and connected by deep spandrel beams to form a rigid moment-resisting system. Each column is 450mm x 450mm steel box section
Vertical subsystem: Outside framed tube is formed by four façades. Each façade: 56 box-sectional column spaced with 1.02m center and connected by deep spandrel beams to form a rigid moment-resisting system. Each column is 450mm x 450mm steel box section
The details of WTC Cross section of column Horizontal section through an exdemal cooumn ★h物ndow frame connection 42 Fig.4 Cross Section Through Exterior Box Column(from [1])
The details of WTC— Cross section of column
Vertical subsystem: Inside core tube is formed by 44 box section steel column with concrete wall. Each column is 450mm x 450mm steel box section
Vertical subsystem: Inside core tube is formed by 44 box section steel column with concrete wall. Each column is 450mm x 450mm steel box section