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Figure 4-42 Small Arms Repair Room with Arms Vault
4.5.2.2 The typical crane is a 6.8 metric ton (7.5 ton), single-girder,
top-running crane, equipped with a low-headroom, bottom-running
trolley with a wire rope hoist. Structural columns with a supporting
haunch must be strategically placed to support the crane girder and
rail, which supports the bridge crane. The maximum span of the
bridge crane itself will be 18,000 mm (60 ft). It is not economically
feasible to span the entire 24,000 mm (80 ft) width of the building.
Verify clear hook height required with the Tenants, based on the
equipment they service. Some units servicing heavier equipment may
require a crane with a larger lifting capacity.
4.5.2.3 The crane will be Class C, moderate service CMAA Duty
Classification. Provide push button pendant festoon. Minimum and
maximum speeds: hoist .076 m/s (15 fpm) and .127 m/s (25 fpm);
trolley .229 m/s (45 fpm) and .381 m/s (75 fpm); and bridge .382
m/s (75 fpm) and .762 m/s (150 fpm). Provide warning horn and
light when crane is in motion, and warning alarm and light when
crane malfunctions or is overloaded.
4.5.2.4 Space Design Information see OMS workbays, Section
4.3.9 above. See 4.3.9.4 if welding is authorized.
4.5.3 Small Arms Shop and Vault
4.5.3.1 The shop and vault provide space for the repair and storage
of small arms such as rifles, machine guns, grenade launchers, etc.
The shop should be located adjacent to the arms vault with access
to the vault through the shop, similar to the armorer's and arms vault
spaces in a training center.
4.5.3.2 A 110 volt continuous power strip should be provided over
the work benches.
4.5.3.3 Construction of the vault must be in compliance with AR
190-11. See Section 4.2.11 for additional vault design information.
UFC 4-171-05
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