They are present in all tall buildings including the world s tallest skyscrapers with significant.
Wtc mechanical floors.
On the 41st and 42nd floors both towers will house mechanical equipment.
A few clips show the operations control center occ on b1 level below wtc2 south tower shopping mall at concourse level refrigeration plant below w.
To accommodate the heavy loads the floors are designed as structural steel frame slabs.
Most of the drawings are dated august 31 1967.
It was destroyed along with the north tower 1 world trade center in the september 11 attacks.
The new 2 world trade center currently on hold has the same flat roof with no observation deck and no mechanical floors.
All other floors from the ninth to the top except for 75 and 76 which will also carry mechanical equipment have typical truss floor joists and steel decking.
This paper focuses on aspects of the structural design of the wtc buildings which played a critical role in the outcome of the attacks of september 11 2001 such as the floor system in wtc 1 and wtc 2 and the floor connections around column 79 in wtc 7.
Mechanical is the most commonly used term but words such as utility technical service and plant are also used.
A mechanical floor mechanical penthouse mechanical layer or mechanical level is a story of a high rise building that is dedicated to mechanical and electronics equipment.
