Hello . Can I have in one sprinkler system:
production and high storage zone? Production is covered by K160 and storage is covered by ESFR.
Yes. Thought the most demanding area must have it's sprinkler coverage extend 6 m into the less demanding area. Alternatively, a water curtain can be provided to separate both area's sprinkler coverage.
Unless the requirements of (1)(2)(3)(4) are met, mixed commodity
storage shall be protected by the requirements for the highest classified commodity and
(1) Up to 10 pallet loads of a higher hazard commodity of Class I-Class IV and Plastics Gr.A,B,C,
shall be permitted to be present in an area not exceeding 40,000 ft2 (3716 m2)
(2) The higher hazard commodity shall be randomly dispersed with no adjacent loads in
any direction (including diagonally).
(3) Where the ceiling protection is based on Class I or Class II commodities, the
allowable number of pallet loads for Class IV or Group A plastics shall be reduced to
(4)The protection requirements for the lower commodity class shall be permitted to be utilized in the area of lower commodity class,
where the higher hazard material is confined to a designated area and the area is protected to
the higher hazard in accordance with the requirements of this standard.
If you exceed number of pallets as described above use:
For buildings with two or more adjacent hazards or design methods, the following shall apply:
(1) where areas are not physically separated by a barrier or partition capable of delaying heat from a fire in one area from fusing sprinklers in the adjacent area, the required sprinkler protection for the more demanding design basis shall extend 15ft (4,6m) beyond its perimeter. It can be obviously more than 4,6m, basically you want to have 2 rows of sprinklers more.
(2) The requirements of point (1) shall not apply where the areas are separated by a draft curtain or barrier located above an aisle, horizontally a minimum of 2 ft (600mm) from the adjacent hazard on each side, or a partition that is capable of delaying heat from a fire in one area from fusing sprinklers in the adjacent area
(3) The requirements of point (1) shall not apply to the extension of more demanding criteria from an upper ceiling level to beneath a lower ceiling level where the difference in height between the ceiling levels is at least 2 ft (600mm), located above an aisle, horizontally a minimum 2ft (600mm) from the adjacent hazard on each side.
I don't know what situation exactly you have, I assume that you have in-rack storage with more than 10 pallets, no draft curtains, ceiling at 1 level - Solution 2 and point (1)
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