Hoping to gain some insight from industry here:
Working on preliminary layouts for a large industrial facility that is comprised of tilt-up precast single-story building (~40' tall) and flanked on one side by an equipment yard (think generators, switchgears, mechanical equipment) configured in two levels (think mezzanine).
Question is on fire access to the main building: The mechanical yard runs the entire length of the main building and we are considering fire access as the depth of the equipment yard is ~100ft with a limited service corridor separating the two (~12ft) for maintenance and building egress. There will be periodic gaps (~6ft wide) between equipment located at grade, however the access will require passing through the yard on foot (underneath the second level of equipment on the mezzanine) to gain access to the main building.
Per IFC 503.1.1 our fire access roads must provide continuous access to the exterior within 150ft of the building.
Would passing "through" the mechanical yard at grade meet this requirement?
Would placing "driveways" through the yard to allow a truck to pull closer to the building (but being parked underneath the second level) be kosher?
A similar question exists regarding having hydrants located directly under the second level near the extents of the yard, is this OK?
Have been unsuccessful at locating any code references regarding fire access through a "tunnel" if you would. An AHJ perspective would be much appreciated, along with any other thoughts/feedback.
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