Unformatted text preview: shall be equipped with a clapperchecks and substantial plugs. All Siamese inlet connections shall be recessed in the wall or otherwise
(6) Outlets – All dry standpipes shall extend from the ground floor to and over the roof and
shall be equipped with a 63 millimeters outlet not more than 1.20 meters above the floor level at each
storey. All dry standpipes shall be equipped with a two-way 63 millimeters outlet above the roof. All
outlets shall be equipped with gate valves.
(7) Signs – An iron or bronze sign with raised letters at least 25 millimeters high shall be
rigidly attached to the building adjacent to all Siamese connections and such signs shall read:
“CONNECTION TO DRY STANDPIPE”.
(c) Wet Standpipes – Every Group H and I Occupancy of any height, and every Group C
Occupancy of two or more storeys in height, and every Group B, D, E, F, and G Occupancy of three or
more storeys in height and every Group G and E Occupancy over 1,800 square meters in area shall be
equipped with one or more interior wet standpipes extending from the cellar or basement into the
topmost storey: Provided, that Group H buildngs having no stage and having a seating capacity of less
than 500 need not be equipped with interior wet standpipes.
(1) Construction – Interior wet standpipes shall be constructed of the same materials as those
required for dry standpipes.
(2.1) Interior wet standpipes shall have an internal diameter sufficient to deliver 190
liters of water per minute under 2.0 kilograms per square centimeter pressure at the hose connections.
Buildings of Group H and I Occupancy shall have wet standpipes systems capable of delivering the
required quantity and pressure from any two outlets simultaneously; for all other occupancies only one
outlet need be figured to be opened at one time. In no case shall the internal diameter of a wet standpipe
be less than 50 millimeters, except when the standpipe is attached to an automatic fir-extinguishing
(2.2) Any approved formula which determine pipe sizes on a pressure drop basis may be
used to determine pipe size for wet standpipe systems. The Building Official may require discharge
capacity and pressure tests on completed wet standpipe systems.
(3) Number Required – The number of wet standpipes when required in this Code shall be so
determined that all portions of the building are within 6.00 meters of a nozzle attached to a hose 23.00
meters in length.
(4) Location – In Group H and I Occupancies shall be located as follows: one on each side of
the stage, one at the rear end of the auditorium, and one at the rear of the balcony. Where occupant loads
are less than 500 the above requirements may be waived: Provided, that portable fire-extinguishers of
appropriate capacity and type are installed within easy access from the said locations. In Group B, C, D,
E, F, and G Occupancies, the location of all interior wet standpipes shall be in accordance with the
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This note was uploaded on 09/22/2013 for the course ARIDBE AR taught by Professor Any during the Fall '12 term at Mapúa Institute of Technology.
- Fall '12