supports for sewer pipes, manholes, inlets, and other
appurtenances.
8.8
Limit sanitary trunk sewers to not less than 200 mm (8 inch)
diameter and sanitary sewer building connections to not less than
100 mm (4 inch) diameter. Establish sanitary sewer slopes to
provide minimum velocity of 0.6 mm per second (two feet per
second) when pipe is flowing full; maximum slope shall be nine
percent.
8.9
Limit storm sewers serving drainage inlets to not less than 200 mm
(8 inch) diameter and building connections to not less than 100 mm
(4 inch) diameter. Establish storm sewer slopes to provide
minimum velocity of 0.6 mm per second (two feet per second) when
pipe is flowing full. Maximum storm sewer design velocity shall
be in non-erosive range for specified pipe material.
8.10
Discharge cooling tower drains, overflows, and blow-down piping
systems to the sanitary sewerage system. Provide air gaps to
prevent cross connections between sewerage and water systems.
8.11
Use State or local standard details for manholes, inlets, endwalls
and pipe cradles. Adjust master specifications as necessary.
9.
SEWAGE PUMPING EQUIPMENT (OUTSIDE):
9.1
Design pumping system to discharge at maximum sewage flow rate
with largest pump not operating. Connect pumping system to
emergency power.
9.2
Wet well shall be large enough to allow an interval of at least 6
minutes between successive starts of same pump motor throughout
entire range of estimated flow rates. Include high water level
alarm system in wet well, and place warning bell in boiler plant
operator's office or other appropriate location.
10.
GAS DISTRIBUTION SYSTEM: Coordinate with gas company concerning housing
and/or fencing for gas metering and regulating equipment. Provide gas
filter upstream of meter.
11.
vehicles and equipment requiring fuel. Show tank, piping (from tank to
building or tank to fuel dispensers), tank and piping monitoring, pumps,
and dispensers on "W-Series" drawings. Tanks, piping, pumps, and
monitoring are described in Master Specification 15606. Interior
requirements for emergency generators are shown on electrical drawings
and described in Master Specification 16208.
12.
SUBMISSIONS: Submit calculations required under the Contract to include
the following systems:
Cathodic Protection
Storm Drainage
Water
Gas
Irrigation
Pumps
Sanitary Sewerage
Oil and Gasoline Supply
APPLICABLE DESIGN AND CONSTRUCTION PROCEDURES INDEX: Use the current VA
13.
Design and Construction Procedures relating to plumbing engineering.
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