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

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

Area of floor=120^{'} ×240^{'}

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

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