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1. A fire-sprinkler protection system for a combustible concealed space above which is a sloped ceiling with a pitch greater than one in twelve, the fire-sprinkler protection system comprising:
a plurality of pendent sprinklers disposed beneath the sloped ceiling, each pendent sprinkler of the plurality of pendent sprinklers having a pendent-sprinkler deflector providing a pendent-sprinkler spray pattern that is generally circular cylindrical about the pendent sprinkler, and a pendent-sprinkler hydraulic demand substantially equivalent to a projection hydraulic demand for a horizontal footprint projection of the sloped ceiling on the floor, a plurality of sidewall sprinklers disposed at structural points of maximum heat trap, each sidewall sprinkler of the plurality of sidewall sprinklers having a sidewall-sprinkler deflector providing a sidewall-sprinkler spray pattern having a generally rectangular shape and a sidewall-sprinkler hydraulic demand substantially equivalent to the projection hydraulic demand for the horizontal footprint projection of the sloped ceiling on the floor; and a piping system coupled to each pendent sprinkler of the plurality of pendent sprinklers and each sidewall sprinkler of the plurality of sidewall sprinklers by a plurality of branch lines, the piping system sized to provide each pendent sprinkler of the plurality of pendent sprinklers with the pendent-sprinkler hydraulic demand and to provide each sidewall sprinkler of the plurality of sidewall sprinklers with the sidewall-sprinkler hydraulic demand. |
