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Chapter 8: Plumbing and Fire Protection
08
hot water supply
cold water supply
tub trap
vent stack
(through roof)
waste
tub
drain
shower
supply
tub
supply
cold to sink
hot to sink
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Common Bathroom Pipe Layout
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Job: 03-30364 Title: Rp-Architecture Reference & Specification
#175 DTP: 216 Page: 84
Job: 03-30364 Title: Rp-Architecture Reference & Specification
#175 DTP: 216 Page: 85
(P 285U)
08
PIPES
SUPPLY
Water Supply:
white plastic (PVC)
1/2” - 1” dia.
Water or Gas Supply:
copper
1/2” - 1” dia.
Water Supply:
galvanized iron
1/2” - 1” dia.
Gas Supply:
black iron
1/2” - 1” dia.
DRAIN
Drain and Vent:
black plastic
1-1/2” + dia.
Drain and Vent:
cast iron
1-1/2” + dia.
Plumbing and Fire Protection 85
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08
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
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24
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26
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28
29
30
Fire Protection Systems
Limitations on building area and height may be lessened when re-protection systems such as automatic
sprinklers are in place. Active re-protection systems are dened by IBC 202 as “approved devices,
equipment and systems or combinations of systems used to detect a re, activate an alarm, extinguish
or control a re, control or manage smoke and products of a re, or any combination thereof.” They are
meant to work in conjunction with the building’s passive systems (re-resistive construction) to provide
necessary protection for the occupants of any building type. Higher levels of stringency in one system
might mean lessened requirements in the other, though neither should be compromised for the sake of
cost or convenience.
The IBC requires active systems for buildings above certain sizes and occupant loads, regardless of the
type of construction. IBC Section 903 establishes these requirements based on use groups and re
areas (“the aggregate oor area enclosed and bounded by re walls, re barriers, exterior walls, or re-
resistance-rated horizontal assemblies of a building”). Alternative re-extinguishing systems may be used
when necessary, in compliance with IBC 904. Examples of reasons to use alternative systems might
include libraries and museums or telecommunications facilities, whose contents would sustain water
damage from standard water sprinkler systems. Until recently, Halon 1301 gas was widely preferred as a
re-suppression option; however, it has proven to be harmful to the ozone layer and is being replaced by
other options.
water main
reserve
tank
Sprinkler Distribution Diagram
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