UFC 4-211-01N
25 October 2004
fabricated from steel bar gratings, diamond tread steel deck or more esoteric
materials. Design these surfaces according to the applicable codes for the loads
and criteria determined by the design professional.
4-5.11
Doors. Doors should meet the criteria defined in paragraph 3-11.
Design hangar doors in accordance with components and cladding, wind
pressure coefficients determined in accordance with UFC 1-200-01. Consider
the full operating range of the roof structure and wind uplift to design door guide
system.
4-5.11.1
Horizontal Rolling Hangar Doors. Horizontal rolling hangar doors
typically support their own gravity load and only impart lateral (wind, seismic)
loads to the main structural system through a track system at the door head.
Furthermore, an extensive structure is required at grade to support the bottom
door tracks as well as some means to ensure that the bottom tracks remain clear
of obstructions. See also paragraph 3-11.1.
4-5.11.2
Vertical Lift Fabric Hangar Doors. Vertical lift fabric doors are
lighter than rolling doors, but the entire weight is carried by the superstructure.
Additionally, beyond a practical limit of about 15 m (49 ft) multiple door leaves
are required. A complicated swinging mullion with additional overhead
equipment is required for every vertical lift fabric door beyond the first. However,
vertical lifting fabric doors do not require door pockets to entirely clear the hangar
opening nor do they require extensive support at grade. See also paragraph 3-
11.2.
50
Previous Page
