fcllc
REGISTERED
Has anyone dealt with ISO (probably fire Marshals) we will be building a small 3600 SqFt building, 1story with a basement. Since it is non sprinklered we were given, by the town engineer, the ISO guide for determination of needed water flow. Based on the calculations for the hydrant in the street (provided by engineering), versus the building as calculated by the ISO guide we do not have enough hydrant flow for the size of the building. ISO allows an area modification for “division walls”; this is from the ISO guide.
b. Modification for division walls:
Sometimes the floor of a building is separated into different fire divisions. An acceptable division wall shall be constructed entirely of noncombustible materials with a fire-resistance rating of not less than one hour, or of masonry materials, and shall:
.
(1) Extend from one exterior wall to another (or form an enclosed area within the building).
(2) Extend from one masonry or fire-resistive floor to masonry or fire-resistive floor or from a masonry or fire-resistive floor to a roof of any construction.
(3) Have all openings through the wall protected by an automatic or self-closing labeled Class B (not less than one-hour) fire door.
With the division wall modification we meet needed flow. My question is what are we supposed to build, based on this? A true fire wall like you would have in a town home? This description does not seem to be tied to any building code, and at this point I would usually go to the commentary. My go to people aren’t sure either. It would be easy if they cited a code to go by. Any help would be appreciated
b. Modification for division walls:
Sometimes the floor of a building is separated into different fire divisions. An acceptable division wall shall be constructed entirely of noncombustible materials with a fire-resistance rating of not less than one hour, or of masonry materials, and shall:
.
(1) Extend from one exterior wall to another (or form an enclosed area within the building).
(2) Extend from one masonry or fire-resistive floor to masonry or fire-resistive floor or from a masonry or fire-resistive floor to a roof of any construction.
(3) Have all openings through the wall protected by an automatic or self-closing labeled Class B (not less than one-hour) fire door.
With the division wall modification we meet needed flow. My question is what are we supposed to build, based on this? A true fire wall like you would have in a town home? This description does not seem to be tied to any building code, and at this point I would usually go to the commentary. My go to people aren’t sure either. It would be easy if they cited a code to go by. Any help would be appreciated
