UFC 4-133-01N
24 February 2005
Including changes 1 and 2, 7 March 2007
2-5.7.1
Roof Loads
a. Snow Load: Per UFC 1-200-01, Design: General Building
Requirements or applicable local codes, whichever is more
stringent.
b. Roof Live loads per UFC 1-200-01.
c.
ice.
2-5.7.2
Floor Loads
Table 1 Floor Loads
AREA
ENGLISH
METRIC
7.2 Kn/m2
Tower Cab Floor
150 PSF
100 PSF 4.80 Kn/m2
Office Areas
50 PSF 2.40 Kn/m2
Restrooms
50 OSF 2.40 Kn/m2
Locker Rooms
Public Areas (corridors/Stairs/Walkways) 100 PSF 4.80 Kn/m2
250 PSF 12.00 Kn/m2
Mechanical and Electrical Rooms
250 PSF 12.00 Kn/m2
UPS
125 PSF 6.00 Kn/m2
Storage Rooms (Light)
150 PSF 7.20 Kn/m2
Electronics Equipment Rooms
2-5.7.3.1
Wind Loads.
Design ATCTs with a height-to-width ratio less than or equal to 5, in accordance
with UFC 1-200-01 using the 50-yr. recurrent wind speed.
Provide calculations signed by a registered professional structural engineer for
government review in the following cases.
a. Structures with a height-to-width ratio larger than 9 and having a
minimum plan dimension less than 10.3 m (34 ft.).
b. Structures with a height-to-width ratio equal to 5 that are located in
special wind regions or in regions having a 50-year recurrent wind
speed greater than 100 mi. per hour (161 km per hour).
c.
Structures located in hurricane zone.
Per FAA Order 6480.7, ATCT will be designed to have a limiting drift ratio (story
lateral deflection/story height) of 0.002 or less due to design wind loads.
2-5.7.3.2
Design Special Loads.
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