industrial areas and stainless steel in finished areas. The outlet pipe
size shall be as indicated or of the same size as the connective pipe.
2.6.4
Floor Drains for Acid Waste Piping System (X-Ray Film Processors)
Floor drains for polypropylene piping systems shall be
of flame-retardant
polypropylene conforming to ASTM D 4101. Floor drains
for high-silicon
content cast-iron piping systems shall be of cast-iron
compatible with the cast-iron pipe specified. Details
of floor drains
shall be as shown.
2.6.5
Boiler Room Drains
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NOTE: Boiler room drains will be used where coal is
the heating fuel.
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Boiler room drains shall have combined drain and trap, hinged grate,
removable bucket, and threaded brass cleanout with brass backwater valve.
The removable galvanized cast-iron sediment bucket shall have rounded
corners to eliminate fouling and shall be equipped with handgrips. Drain
shall have a minimum water seal of 100 mm 4 inches. The grate area shall
be not less than 0.064 square meters 100 square inches.
2.6.6
Pit Drains
Pit drains shall consist of a body, integral seepage pan, and nontilting
perforated or slotted grate. Drains shall be of double drainage pattern
suitable for embedding in the floor construction. The seepage pan shall
have weep holes or channels for drainage to the drain pipe. Membrane or
flashing clamping device shall be provided when required. Drains shall be
cast iron with manufacturer's standard coating. Drains shall be circular
and provided with bottom outlet suitable for inside caulked connection,
unless otherwise indicated. Drains shall be provided with separate
cast-iron "P" traps, unless otherwise indicated.
2.6.7
Sight Drains
Sight drains shall consist of body, integral seepage pan, and adjustable
strainer with perforated or slotted grate and funnel extension. The
strainer shall have a threaded collar to permit adjustment to floor
thickness. Drains shall be of double drainage pattern suitable for
embedding in the floor construction. A clamping device for attaching
flashing or waterproofing membrane to the seepage pan without damaging the
flashing or membrane shall be provided for other than concrete
construction. Drains shall have a galvanized heavy cast-iron body and
seepage pan and chromium-plated bronze, nickel-bronze or nickel-brass
strainer and funnel combination. Drains shall be provided with threaded
connection and with a separate cast-iron "P" trap, unless otherwise
indicated. Drains shall be circular unless otherwise indicated. The
funnel shall be securely mounted over an opening in the center of the
strainer. Minimum dimensions shall be as follows:
Area of strainer and collar:
0.0235 square m 36 square inches
Height of funnel:
95 mm 3-3/4 inches
Diameter of lower portion of funnel:
50 mm 2 inches
SECTION 15405A
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