Heads up: There are no suggested sections in this chapter.
Heads up: There are no amended sections in this chapter.
The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

CALIFORNIA MECHANICAL CODE - MATRIX ADOPTION TABLE
APPENDIX G - EXAMPLE CALCULATION OF OUTDOOR AIR RATE
(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
Adopting Agency BSC BSC-CG SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
1 2 1-AC AC SS SS/CC 1 1R 2 3 4 5
Adopt Entire Chapter
Adopt entire chapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
Chapter / Section
This state agency does not adopt sections identified with the following symbol:
The Office of the State Fire Marshal's adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.
Determine the outdoor air rate required for a single zone AC unit serving an interior 2000 square feet (185.81 m2) conference/meeting room with a design occupancy of 100 people. The system supplies and returns air from the ceiling. (See Chapter 4 of this code for guidelines)

Solution:

In accordance with Table 403.2.2, the zone air distribution effectiveness is 1.0 since the system supplies cooling only from the ceiling. Using the rates from Table 402.1 for a conference/meeting room, the minimum system outdoor air rate is calculated to be:

Vot = (Equation G 101.1)
=
= 620 cubic feet per minute (ft3/min)

Where:
Az = zone floor area: the net occupiable floor area of
the zone in square feet.
Pz = zone population: The largest number of people
expected to occupy the zone during typical usage.
Where the number of people expected to occupy
the zone fluctuates, Pz shall be permitted to be estimated
based on averaging approaches described in
Section 403.6.1. Where Pz cannot be accurately
predicted during design, it shall be estimated based
on the zone floor area and the default occupant
density in accordance with Table 402.1.
RP = outdoor airflow rate required per person in accordance
with Table 402.1.
Ra = outdoor airflow rate required per unit area in accordance
with Table 402.1.
Ez = zone air distribution effectiveness in accordance
with Table 403.2.2.
For SI units: 1 square foot = 0.0929 m2, 1 cubic foot per minute = 0.00047 m3/s
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