Fire Code of the Philippines Ebook - SafetySignsPH.com Fire Code of the Philippines eBook - SafetySignsPH | Page 122

Standpipe Pressure
at House Outlet
(Kilograms per
square centimeter)
11.97
12.68
14.08
15.85
17.61
19.72
Size of Orifice
(millimeter)
16.7
15.9
15.1
14.3
13.5
12.7
E. Combination Standpipes
1. All combination standpipes shall comply with the requirements of this
Section. Design and installation shall be in accordance with NFPA 14,
Standard for the Installation of Standpipe, Private Hydrant and Hose
Systems. Where a combination standpipe system is installed in
accordance with section, a separate dry standpipe system need not
be installed.
2. Required combination standpipes shall be maintained in accordance
with this Section.
3. Location
a. Combinations standpipe system shall have connections for dry
standpipe located as required in para “C” above and shall have
wet standpipe outlets as required in para “D” above.
b. Portions of combination standpipe systems, including extensions for
wet standpipe outlets, not within an enclosed stairway or
smokeproof enclosure shall be protected by a degree of fire
resistance equal to that required for vertical enclosures in the
building in which they are located.
c. In buildings where more than one combination standpipe system is
provided, they shall be cross connected at the bottom.
4. Detailed Requirements
a. Construction. Combination standpipe system shall be installed and
tested as required for dry standpipe system in accordance with
para “C” above.
b. Size. Combination standpipe system shall not less than one
hundred fifty millimeters (150 mm) in diameter.
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