WAC 51-54A-0909. Section 909 — Smoke control systems

909.21.12 Hoistway venting. Hoistway venting need not be provided for pressurized elevator shafts. 909.21.13 Machine rooms. Elevator machine rooms shall be pressurized in accordance with this section unless separated from the hoistway shaft by construction in accordance with Section 707 of the International Building Code .