IBC 714.4 / NFPA 110 Section 7.2.2

IBC 403.4.7 / NEC Article 700

IBC Section 403.4.7 requires stairwell pressurization systems to be connected to emergency or standby power. If the fan loses power during a fire, the stairwell loses its smoke-free status, trapping occupants in a smoke-filled egress path. The fan must operate for the duration of the fire event on emergency power per NEC Article 700.

IBC 714.3 / ASTM E814

This is a proper fire-rated penetration seal. UL-listed firestop systems tested to ASTM E814 and matching the installed configuration are required by code. The critical requirements are: the system must be tested/listed for the specific pipe material, size, and wall type; it must match the manufacturer's tested configuration; and the entire annular space must be filled. Steel pipe penetrations must maintain the wall's fire rating per IBC 714.3.

IBC 714.4 / ASTM E814

IBC Section 714.4 requires all penetrations through fire-resistance-rated floor assemblies to be firestopped with a listed through-penetration firestop system. Unsealed bus duct penetrations create vertical smoke and fire migration paths through the entire building, defeating the purpose of rated floor/ceiling assemblies.

IBC 909.11 / IBC 403.4.7

IBC Section 909.11 requires smoke control systems to be connected to both normal and emergency power. Smoke damper actuators that fail during a power outage cannot reposition, rendering the smoke control system non-functional. All smoke control components, including damper actuators, must be on emergency power per IBC 403.4.7.

IBC Section 3006

This passes code with conditions. IBC Section 3006.2 requires enclosed elevator lobbies or an approved alternative at each floor in high-rise buildings to prevent smoke from entering the hoistway. The lobby does not necessarily require its own pressurization system if the building's smoke control system (per IBC 909) prevents smoke from migrating through the lobby to the hoistway. Smoke detectors for Phase I recall are separately required per NFPA 72. Note that general elevator hoistway venting is no longer a code requirement — old Section 3004 (Hoistway Venting) was removed/reserved in the 2015 IBC and later editions because lobby and hoistway-opening protection (Section 3006) supersede it, so venting at the top is optional, not mandated. The building's approach of using the floor smoke control system in lieu of individual lobby pressurization is permitted if the smoke control engineer of record demonstrates adequate protection.

IBC Section 403.1 / IBC 905.3.1

This fails code. IBC Section 403.1 defines a high-rise building as having an occupied floor located more than 75 feet above the lowest level of fire department vehicle access. At 72 feet, this building is NOT classified as a high-rise under IBC. However, some jurisdictions amend the threshold to 55 or 60 feet. The question states 72 feet — technically under the IBC threshold of 75 feet, but local amendments may apply. More critically, IBC Section 905.3.1 independently requires a Class III standpipe system where the floor level of the highest story is located more than 30 feet above the lowest level of fire department vehicle access. So while the building may avoid IBC 403 high-rise requirements, it still requires standpipes per IBC 905.3.1 (NFPA 14 governs how that standpipe is installed and sized, not where it is mandated). The owner's blanket statement that none of these systems are required is incorrect.