MIL-HDBK-1011/1
Section 10: SPECIALTIES
Scope. This section covers louvers and vents for exterior
10.1
conditions, identifying devices, sun control, toilet compartment cubicles, and
toilet room accessories.
10.2
Louvers and Vents for Exterior Conditions. It is recommended that
all louvers and vents be aluminum, 6063-TS or 3003 alloy, welded or fuse-
welded frames, with an anodized coating of not less than 0.7 mil. Blades
should be drainable and stormproof type. Design structural framework for wind
loads occurring within the various areas of the tropical zone.
10.3
Signage
10.3.1
Fiberglass. These materials are fiber-reinforced, internally
colored resinous plastics and will withstand most of the aggressive elements
when used for exterior purposes. However, bright colors tend to fade when
exposed to constant sunlight. Direct sun also causes delamination over the
long run but this is not a problem for fiberglass used as signs. Fiberglass,
unlike most other plastics used in signage, can be readily painted.
10.3.2
Acrylic Plastic and Phenolic.
Use these for interior purposes
only.
10.3.3
Porcelain Enamel. Porcelain enamel can be factory baked on to
either steel or aluminum. Use aluminum backing since damage to porcelain
enamel over steel can be extensive (often causing the enamel frit to separate
from the steel backing in an area 2 to 10 times the size of the point of
impact). Use aluminum backing, specifying that the porcelain enamel be
applied to both sides of the substrate and that mounting holes be made before
baking will adequately protect the substrate.
10.3.4
Installation.
For exterior applications and interior use in heavy
traffic areas, firmly attach signage to structure walls with tamper-proof
fasteners. Mount large exterior signs on two posts set in concrete. Adhere
interior signage on doors to the door surface with waterproof silicone
adhesive.
10.3.5
Colors. Coordinate choice of colors with manufacturer's
information as regards to color fastness when signs are subject to exterior
environment.
Coordinate exterior color selections with recommendations in
Base Exterior Architectural Plan (BEAP), if one exists.
10.4
Sun Control. Interior and exterior sun control devices are
categorized as interior blinds, both metal and woven fabrics, and woven
fiberglass screens. Limit metals for sun control devices to prefinished
aluminum with a minimum thickness of 0.032 inch for recommended spans.
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