06-06M
PLUMBING DESIGN MANUAL
FOR REGIONAL OFFICE
AND WAREHOUSE 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" (see VA Design and Construction Procedures, "Drawings").
1.2 Piping shall be shown on the same plan as the fixtures being served.
1.3 Pipe size shall be indicated on both floor plan and riser diagram.
1.4 Most VA plumbing fixture units are less than that indicated in standard
plumbing codes (see Article, PLUMBING FIXTURE SCHEDULES).
1.5 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. Fixture unit count at base of each soil and waste stack and for each
sanitary sewer at outside building wall.
C. Invert elevations for all sewers at outside building wall.
D. Centerline elevation for all pressure systems at outside building
wall.
E. Floor elevation at each level.
1.6 Floor drains and hose bibbs shall not be installed in toilet areas.
1.7 Sub-soil drainage is not a plumbing item and shall be indicated on
architectural drawings.
1.8 Investigate if credit can be obtained from the public utility company
for water consumed, but not discharged into the sanitary sewerage
system.
If so, and adequate pressure is available, provide meters for
these users.
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"). Exceptions shall be indicated at a scale of 1:50 (1/4" = 1'0").
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