3.4.2. Where a standpipe system with valves equipped with hoses and nozzles, an automatic water extinguisher system or a combined system is installed in a building, a standpipe system with valves equipped with hoses and nozzles shall be installed progressively within 2 stories of the highest storey under construction.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.4.2; O.C. 53-90, s. 7.