2.2
Show plumbing work on drawings using a minimum scale of 1:100
(1/8" = 1'0"). Exceptions shall be indicated at a scale of 1:50
(1/4" = 1'0").
2.3
Identify rooms on plans with name and number.
2.4
Investigate and, if feasible, connect new services to existing;
otherwise, provide new services.
2.5
Identify on the plumbing drawings all equipment requiring
connections to the plumbing systems by appropriate symbol number.
Do not use the designation N.I.C. on the drawings.
2.6
All equipment shall be placed on housekeeping pads.
2.7
Due to the space requirements of plumbing systems and ductwork,
closely coordinate the layout of these systems. Where areas of
interference are apparent, prepare cross section of building
showing method of installation.
2.8
Piping over food preparation, serving or storage areas, and
electrical rooms containing main distribution panels or motor
control centers shall be avoided where possible. When piping is
necessary in these areas, indicate leakage protection on drawings
or in specifications.
3.
EQUIPMENT SCHEDULES
Provide schedules, including capacity, control settings, services and
sizes, for all plumbing equipment and other equipment requiring plumbing
services, including but not limited to the following:
Plumbing Fixtures
Pumps
Water Heaters
4.
PLUMBING FIXTURES
4.1
Plumbing fixture numbers, description, fixture units and minimum
branch sizes are indicated in Article, PLUMBING FIXTURE SCHEDULES.
4.2
Plumbing fixtures shall be located where indicated by VA Program
Guide 7610 (Equipment Guide List).
5.
WATER DISTRIBUTION SYSTEMS
5.1
See Article, PLUMBING FIXTURE SCHEDULES, for fixture units and
minimum fixture branch sizes.
5.2
Size the piping for the hot and cold water systems not to exceed
the maximum velocity allowed by the National Standard Plumbing
Code. Provide water hammer arrestors in accordance with ASSE 1010
for sealed wall installations without an access panel. Size and
locate per Plumbing Drainage Institute (PDI) requirements.
5.3
Provide wall hydrants a maximum of 60 m (200 feet) apart, at
loading docks and at building entrances, with a minimum of one
wall hydrant on each exterior wall.
5.4
Maintain a minimum of 240 kPa (35 psig) at plumbing fixtures on
top floor.
4
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