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clearances around each piece of equipment. Equipment may share
service access space to minimize mechanical room floor area. Isolate
natural draft fuel-fired equipment from air-handling equipment to
prevent down drafting of flue gasses. Ventilation air intakes and
exhaust air intakes must be a minimum of 9.1m (30 ft.) apart. Intakes
must be 3.05m (10 ft.) above grade due to AT-FP requirements, and
be on a different building face from exhausts. Intakes must also be as
far as possible from cooling towers, plumbing vents and any other
source of contamination. Army Reserve policy is to minimize roof
penetrations and roof-mounted mechanical equipment for both
practical and aesthetic reasons. Fresh air intakes will be located to
maintain this intent while complying with antiterrorism requirements.
3.8.6 Consider providing screen walls for exterior mechanical or
electrical equipment, to screen them from view to improve the
appearance of the facility. If screen walls are provided, their design
must comply with AT/FP standards. Recommend and provide
manufacturer equipment ventilation. Typical screen walls are 2450
mm (8 ft) tall, of a solid material with a lockable gate, and the
screened area normally has a rock mulch or similar ground cover. It
may be necessary to provide a screen top to the enclosure for AT/FP
purposes.
3.9
Plumbing
3.9.1 MDS/AR Approved Materials and Systems
3.9.1.1 The plumbing materials are those typically used for
commercial construction where the building owner intends to occupy
the building. The MDS program includes the application of a
compressed air piping system for maintenance bay service tools.
Other options may include hard piped lube/oil and AT fluid distribution
systems, compressed air drops, battery charging, emergency safety
fixtures and water drops. These may be shared by adjacent workbays
to reduce cost.
3.9.1.2 Provide factory fabricated plumbing equipment. This includes
grease traps, oil/water separators, compressed air plants and trench
drains. Select piping materials that will provide 25 years of service.
Consider the durability required to withstand periodic and emergency
cleaning with plumbing snakes. Select plumbing fixtures and
equipment to provide the lowest life cycle cost. Refer to ETL 110-3-
465 for water meter criteria. Refer to ETL 1110-3-466 for selection
of oil/water separators. TM 5-810-4, 5 and 6 provide design
guidance for compressed air, plumbing and gas piping systems,
respectively. TM 5-813-5 provides design guidance for water supply
UFC 4-171-05
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