Will a gas water heater be installed?
Will a pressure regulating valve be
installed?
Are water treatment devices, such as filters
and water softeners, going to be a part of
the system?
Where will valves and water hammer
arrestors be installed?
Where are hose bibbs to be located on the
exterior of the building?
For this example, assume the following:
The water supply enters the building near
the same location as the building sewer.
The meter yoke has been installed and the
outlet of the yoke is about 3′ above the
finished concrete floor.
The water heater will be located in the
laundry area, so it will be close to both the
kitchen and the laundry area. This arrange-
ment also makes use of the floor drain in
the laundry area for any discharge from the
T/P valve.
The water heater is electric and does not
require a gas pipe or a flue to vent combus-
tion fumes.
A pressure regulating valve is not required
since the pressure at the meter is 65 psi.
A whole-house, cartridge-type filter will be
installed near the water meter.
Hose bibbs are needed near two opposite
corners of the house.
The schematic drawing, Figure 20-1, shows
the runs of pipe from the point of entry to the
kitchen/laundry and bath areas, along with the
cold water lines to the hose bibbs. Water
supply piping is attached to the underside of
the floor framing or is run between joists. None
of this piping, therefore, goes below the
concrete floor.
346
Section 3 Plumbing System Design and Installation
Figure 20-1. Schematic drawing of the hot and cold water piping for a house.
To hose bibb B
To hose bibb A
To water main
Water
filter
Water
meter
W.C.
Lav.
Bathtub
Sink
Lau.
tub
Clothes
washer
Water
heater
W.C.
Lav.
Bathtub
Cold water
Hot water
Valve
Stop & waste valve
Optional ball valve
Stop & waste
valve
1.9fu 6′-1⁄2″
1.8fu 6′-1⁄2″
1.0fu 6′-1⁄2″
2.8fu 4′-1⁄2″
3.7fu 2′-1⁄2″
14.7fu 20′-3⁄4″
7.0fu 21′-1⁄2″
3.0fu 21′-1⁄2″ 2.5fu 15′-1⁄2″
2.5fu 15′-1⁄2″
17.2fu 8′-3⁄4″
1.8fu
5′-1⁄2″
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