UFC 3-420-01
25 October 2004
this guidance or referenced standards specify different materials, methods of
construction or other requirements, the most restrictive requirement will govern. In
leased facilities where the local jurisdiction controlling the lessor has adopted a different
plumbing code, the more restrictive requirement will govern.
1-8.1
Fire Protection. If a conflict exists between this UFC and UFC 3-600-01,
Fire Protection Engineering for Facilities, including its referenced standards (National
Fire Protection Association (NFPA), Underwriters Laboratories, Inc. (UL), Factory
Mutual Corporation (FM), etc.), UFC 3-600-01 and its referenced standards take
precedence.
1-8.2
Petroleum Fuel Facilities. If a conflict exists between this UFC and the
current issue of UFC 3-460-01, Design: Petroleum Fuel Facilities, including its
referenced standards (American Petroleum Institute (API), American National
Standards Institute (ANSI), NFPA, UL, FM, etc.), the current issue of UFC 3-460-01 and
its referenced standards take precedence.
1-9
GENERAL POLICY. Design plumbing systems to provide economy and
reliability. Provide simple, functional designs.
1-9.1
Economy. Design systems to provide the lowest life-cycle cost, and to
maximize water conservation and energy efficiency.
1-9.2
failure of a system would drastically reduce the efficiency of a facility, provide dual-fuel
capability and/or redundant system components.
1-9.3
Piping Arrangement. Conceal piping in permanent-type structures. In
limited life structures, piping may be installed exposed, except when specific project
criteria justify concealment or where concealment does not increase the cost of the
project. Exposed piping attached to or near fixtures or equipment, or subject to high
heat or frequent washing, must be copper, brass, or chromium plate. Prime other
exposed piping with paint suitable for metal surfaces and finish-paint with color to match
background. Arrange piping runs to minimize interference with personnel and
equipment. For critical piping services such as medical gas systems, route piping so
that it is not on exterior walls or walls shared with mailrooms in accordance with UFC 4-
010-01 DoD Minimum Antiterrorism Standards for Buildings.
1-9.4
Siting. Whenever possible, site and design buildings, sewers, and water
mains to avoid the need for sewage lifts or water booster pumps.
1-10
DESIGN ANALYSIS. Unless directed otherwise, the design analysis will
include the following:
1-10.1
Design Basis. Basis for design will consist of:
(1) Building population (number of males and number of females).
(2) Plumbing fixture determination, listing quantity and types of fixtures
(3) Fixture units for drainage, venting, cold and hot water piping.
1-3
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