Hi people,
I've a problem with a "special case"; I need to install a sprinkler system on a ceiling with big "beams" (1,05m x 0,90m - about 41" x 36") - see attached file.
NFPA 13 provide some indication for beams (small beam 14") o for ceiling pocket (max volume 1000 ft3 - 28m3) but it's not my...