For the office building with a floor area as shown in Figure 9.17, the facilities planner is
required to determine the plumbing requirements for each floor.

Question

For the office building with a floor area as shown in Figure 9.17, the facilities planner is required to determine the plumbing requirements for each floor.

Accepted Answer

Table 9.15 Plumbing Fixture Requirements for the Example Problem

Plumbing Fixture	Women	Men
Plumbing Fixture	Option 1	Option 1	Option 2*
Water closet	6	6	4
Lavatories	7	7	7
Urinals	—	—	2

*Note up to 1/3 water closets can be replaced by urinals

Area of floor=[latex]120^{'} [/latex]×[latex]240^{'} [/latex]

[latex]=28,800ft^{2} [/latex]

(using International Building Code Table 9.11)
Minimum recommended space is 100 ft2/person. For business use type, the maximum allowable floor population is

[latex]\frac{28,800 ft^{2} }{100 ft^{2}/person } =288 persons[/latex]

Assume 144 men, 144 women
Using Table 9.15, the minimum number of fixtures needed was obtained. The adjusted requirement for urinals is as shown in Table 9.15.
For industrial or plant operations, the facilities planner must provide
process water and drain requirements to the person planning the plumbing services. In addition, the facilities planner must also provide the composition of all process liquids. The treatment or filtering of these liquids must be carefully planned.
Plumbing services for fire protection require not only that the proper quantity
of water be available, but also that the proper water pressure be provided.
The most common approach to fire protection is automatic sprinkler systems. The facilities planner’s input into the planning of fire protection plumbing services is a facility layout and a description of the activities to be performed in various areas within the facility.

Table 9.11 (2003 IBC Table 1004.1.2) Maximum Floor Area Allowances per Occupant

Use	Floor Area per Occupant (ft2)
Agricultural building	300 gross
Aircraft hangers	500 gross
Airport terminal
Baggage claim	20 gross
Baggage handling	300 gross
Concourse	100 gross
Waiting areas	15 gross
Assembly
Gaming floors (keno, slots, etc.)	11 gross
Assembly with fixed seats	See Section 1003.2.2.9
Assembly without fixed seats
Concentrated (chairs only—not fixed)	7 net
Standing space	3 net
Unconcentrated (tables and chairs)	15 net
Bowling alleys allow five persons for each alley, including
15 of runway, and for additional areas	7 net
Business areas	100 gross
Court rooms—other than fixed seating areas	40 net
Dormitories	50 gross
Educational
Classroom area	20 net
Shops and other vocational room areas	50 net
Exercise rooms	50 gross
H-5 fabrication and manufacturing areas	200 gross
Industrial areas	100 gross
Institutional areas
Inpatient treatment areas	240 gross
Outpatient areas	100 gross
Sleeping areas	120 gross
Kitchen, commercial	200 gross
Library
Reading rooms	50 net
Stack areas	100 gross
Mercantile
Basement and grade floor areas	30 gross
Areas on other floors	60 gross
Storage, stock, shipping areas	300 gross
Parking garages	200 gross
Residential	200 gross
Skating rinks, swimming pools
Rink and pool	50 gross
Decks	15 gross
Stages and platforms	15 net
Accessory storage areas, mechanical
equipment room	300 gross
Warehouses	500 gross

Question 9.7: For the office building with a floor area as shown in Figure...

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