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 MIL-HDBK-1013/1A
of assets. Transparent bullet-resistant
doors/frames usually are constructed
of steel or aluminum sections with
glazing panels of transparent armor
consisting of glass, glass/plastic
composites, or glass and plastic
separated by an air gap. Each of the
transparent armor types can be sized to
different types of ballistic threats
shown in Table 45. Installation (or
replacement)of the transparent armor is
critical in the overall protection
afforded by
the door assembly.
A transparent bullet-resistant door
is not an attack-resistant door unless
specifically designed against a
forced-entry threat. Many of the
features
Table 47
Wall Construction Capable of Defeating the MIL-SAMIT Very High Threat
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*
*
Construction
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*8-inch (203-mm) cast concrete wall. Rebar [5/8 inch (16 mm)] placed in
*
*the center of the wall both horizontally and vertically on 6-inch (152-mm) *
*centers. Single sheet of 10-gauge (3.4-mm) steel on the outside face.
*
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*10-inch (254-mm) cast concrete wall. Rebar [5/8 inch (16 mm)] placed in
*
*the center of the wall both horizontally and vertically on 6-inch
*
*(152-mm) centers. Single sheet of 10-gauge (3.4-mm) steel on the outside *
*face.
*
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*12-inch (305-mm) grout-filled CMU block. Rebar [5/8 inch (16 mm)] placed *
*the full height of the wall in each block opening. Single sheet of 10-
*
*gauge (3.4-mm) steel on the outside face.
*
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incorporated into bullet-resistant doors are very beneficial to resist
attack; however, the glazing systems of some transparent bullet-resistant
doors are still vulnerable to tool attacks. Tests have shown that some
transparent armors and framework can be penetrated within a short time when
basic attack tools are used against the glazing.
A bullet-resistant door should provide protection with all door
components. The lock area, frame, and sill plate should be armored to
protect against the same type of threats as the door itself. Full length
hinges or
205
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