1.2.3.3
Unit of Measure
Unit of measure:
per kilometer mile.
1.3
SYSTEM DESCRIPTION
Design, furnish, and install [_____][identical] vertical axial-flow or
mixed-flow, single [or two-]stage impeller-type pumps.
1.3.1
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NOTE: Select appropriate alternate paragraph for
subparagraph "d". A discharge line is used for all
applications, except for stations that have the
discharge system integral with the wall of the
pumping station.
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a.
Pumps are for the purpose of pumping [_____] from [_____] into
[_____]. Water pumped will not exceed [_____] degrees C F, will
be relatively turbid, and may contain sand, silt, and vegetative
trash capable of passing trashrack. Trash-racks will have [_____]
mm inch clear openings. Pumps shall be designed to operate in the
dry.
b.
Pumps shall be driven by the [vertical] [horizontal] [induction]
[synchronous] [motors described in Section [[_____]] [16221A
ELECTRIC MOTORS, 3-PHASE VERTICAL INDUCTION TYPE] [16222A ELECTRIC
MOTORS, 3-PHASE VERTICAL SYNCHRONOUS TYPE]] [horizontal crankshaft
diesel engines described in Section [[_____]] [15133A [DIESEL] /
[NATURAL GAS FUELED] ENGINE PUMP DRIVES],] [through right angle,
vertical shaft, reducers described in Section [[_____]] [15005A
SPEED REDUCERS FOR STORM WATER PUMPS]].
c.
Design pump so that no major modifications, alterations, or
additions will be required to the pumping station or suction bays
to accommodate it. However, requests for changes in setting of
pump, supports, and accessories, which would involve only minor
modifications, will be considered. Design pump so that pump parts
will fit within the limiting horizontal and vertical dimensions
shown and so installation and maintenance can be accomplished by
[interior; overhead traveling crane,] [truck crane using hatch in
roof.] Pumps, [or pump parts assembled at pumping station] shall
be capable of being lowered through floor openings shown with
minimum of 25 mm 1 inch clearance around each side.
[d.
Pump shall discharge into discharge system shown. System loss
curve, which includes friction losses from pump discharge elbow to
[end of discharge line], [beginning of down [riverward] leg of
discharge line], including bend losses, exit loss, and velocity
head, is included as Figure 1 at end of this section to permit
determination of total head. Losses within pump shall be
determined by Contractor.]
[d.
Pump discharge system downstream of pump [discharge elbow]
[diffuser] shall be designed by pump manufacturer. It shall be of
type shown and shall fit within limiting dimensions and elevations
shown. The Contractor shall determine all losses for discharge
SECTION 15131A
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