UFC 4-211-01N
25 October 2004
the high roof over the OH space through a secured access panel or hatch, to
prohibit unauthorized passage. Built-up roofing, insulation, and moisture
protection should conform to the applicable guide specifications listed at the
Whole Building Design Guide DoD page (http://dod.wbdg.org/.)
3-10.1
Systems to Consider. Consider the use one of the following
systems:
3-10.1.1
Metal roof deck with rigid insulation, smooth surface built-up roof
system or mineral surface modified bitumen roof system.
3-10.1.2
Composite metal deck and lightweights concrete engineered roof
system with smooth surface built-up roof system or mineral surface modified
bitumen roof system. Composite deck supplier should be responsible for
connection of lightweight material to deck.
3-10.1.3
Metal "acoustical" roof deck with rigid insulation and a structural
standing seam metal roof system. Consider using this system over the hangar
bay.
3-10.2
Other Alternatives. Consider using one or more of these systems
as applicable.
3-10.2.1
Other types of roof systems based on cost and energy savings can
be considered.
3-10.3
Criteria to Consider. Select the most suitable roof systems from
the following criteria:
3-10.3.1
Very low slope (minimum of 13 mm per 300 mm (1/2 inch per foot)).
Where roof slopes are 13 mm per 300 mm (1/2 inch per foot), decks should be
stiff enough to prevent ponding, and a built-up roof should be smooth surfaced.
3-10.3.2
Sloped roofs (25 mm per 300 mm (1 inch per foot) or greater).
Roofing membrane, insulation, and moisture protection should be used only on
roofs with a slope of 25 mm per 300 mm (1 inch per foot) or greater.
3-10.3.3
Pitched roofs. Insulated metal roof panels should be used. Panels
should be pre-engineered or field-fabricated and filled with blanket or rigid
insulation with insulation blocks over purlins.
3-11
HANGAR DOORS. Choose one of the following types:
3-11.1
Horizontal Sliding Hangar Doors. Hangar doors should be a
series of insulated, horizontal sliding leaves with protected, preformed
(corrugated) metal or sheet-steel siding. Each sliding door leaf should be
supported on hardened wheels rolling on recessed rails with guide rails at the top
of the door. Hangar door rail support system should provide for surface
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