01-06
PLUMBING DESIGN MANUAL
FOR PARKING STRUCTURES PROJECTS
DEPARTMENT OF VETERANS AFFAIRS
1. CRITERIA UNIQUE TO VA
1.1 Plumbing design and plumbing seismic design shall only be indicated on
"PL-Series" drawings (see VA Design and Construction Procedures,
"Drawings").
1.2 The following shall be indicated on the plumbing drawings:
A. Drainage area in square meters (footage) for each roof drain and
totals for building at outside building wall.
B. Invert elevations for all sewers at outside building wall.
C. Centerline elevation for all pressure systems at outside building
wall.
D. Floor elevation at each level.
1.3 Sub-soil drainage is not a plumbing item and shall be indicated on
architectural drawings.
2. GENERAL
2.1 Design the plumbing system to comply with this criteria, and the
current edition of VA Design and Construction Procedures, VA Program
Guides, VA Program Guides, and VA Master Specifications.
Design shall
also meet the provisions of the current edition of the National
Standard Plumbing Code as published by the National Association of
Plumbing-Heating-Cooling Contractors, and the National Fire Codes as
published by the National Fire Protection Association (NFPA), unless
VA criteria indicates otherwise.
If state or local codes are more
stringent than above requirements, discuss with VA Contracting
Officer.
2.2 Show plumbing work on drawings using a minimum scale of 1:100 (1/8" =
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.
3. WATER DISTRIBUTION SYSTEMS
3.1 Size the cold water system not to exceed the maximum velocity allowed
by the National Standard Plumbing Code.
Provide necessary water
hammer arrestors.
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