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<br />1101.0 General.
<br />i� �" � � y .
<br />1101.1 Where Required. Roofs, paved areas, yards,
<br />Icourts, courryards, vent shafts, light we11s, or similar areas
<br />having rainwater, shall be drained into a separate storm
<br />sewer systcm, or into a combined sewer system where a
<br />separate storm sewer systen� is not available, or to some
<br />other place of disposal satisfactoty to the Authoriry Having
<br />Jurisdiction. In the case of one- and two-family dwellings,
<br />storm water shall be permitted to be discharged on tlat
<br />areas, such as streets or lawns, so long as the storm water
<br />sha11 flow away from the building and away from adjoining
<br />}�roperiy, and shall not create a nuisance.
<br />1101.2 Storm Water Drainage to Sanitary Sewer
<br />PCohibited. Sto�m water shall not be drained into sewers
<br />intcnded for sanitary drainage.
<br />1101.3 Materi�l UseS. Rainwater piping placed within
<br />the interior of a building or run within a vent or shaft shall
<br />be of cast-iron, galvanized steel, wrought iron, brass,
<br />copper, lead, Sclledule 40 ABS D�'V, Schedule 40 PVC
<br />D�VV, stainlcss stec] 30� or 316L [stainless stc;el 3L14 l7ipe
<br />and fittings sha11 not be installed underground and shall be
<br />kept not less than 6 inches (152 rnm) aboveground], or
<br />other approved materials, and changes in direction shali be
<br />in accordance with the requirements of Section 70b.0. AF3S
<br />and PVC DWV piping installations shall be installed in
<br />accordancc with IS 5, IS 4, and Chaptcr 15 "Firestop
<br />Protection." Except for individual single-famzly dwelling
<br />units, materials exposed �vithin ducts or plenums shall have
<br />a flame-spread index of a maximum of 25 and a smoke-
<br />developed index of a maximum of 50, where tested in
<br />� accordance with ASTM B 84 and IJL 723.
<br />1101.4 Expansion Joints Required. Expansion joints
<br />or sleeves shall be provided ���liere «arranted by teinpera�
<br />ture variations or physical conditions.
<br />1101.5 Subsoil Drains. Subsoil drains shall be provided
<br />around the perimeter of buildings liavinb basements,
<br />cellars, crawl spaces, or floors below grade. Such subsoil
<br />drains shall be permitted to be positioned inside or outside
<br />of the footing, shalf be of perforzteci or open-jointed
<br />approved drain tile or pipe, not less than 3 inches (80 min)
<br />in diameter, and sha11 be laid in gravel, slag, crushed rock,
<br />approved'/a of an inch (19.1 mm} crushed, recyclect glass
<br />ag�negate, or other approved porous znaterial with not less
<br />�' than 4 inches (102 mm) surrounding the pipe. Fiiter mzdia
<br />shall be provided for exterior subsoil piping.
<br />1101,5.1 DisGharge. 5ubsoil �-ains shall be piped to
<br />a storm drain, to an approved water course, to the front
<br />street carb or gutter, to an aliey, or the discharge from
<br />the subsoil draitts sha11 be conveyed to the alley by a
<br />concrete gutter. Where a continuously ilowing spring
<br />or groundwafer is encountered, subsoil drains shall be
<br />pipeci to a storm drain or an approved water course.
<br />UNIFORM PLUMBING CODE
<br />1101.5.2 Sump. Where it is not possible to canvey
<br />the drainage by gravity, subsoil drains shall discharge
<br />to an accessible susnp provided with an approved auto-
<br />inatic electric pump. 't'he sump shal( be not less than
<br />15 inches (381 rrzm) in diameter, 18 inches (457 mm)
<br />in depth, and provided ��ith a fitted cover. The sum�
<br />pump sliall have an adec�uate capacity to dischargc
<br />water coming into the surnp as it accumulates to the
<br />required discharge point, and the capacity ot the pump
<br />shall be not less than 15 gallons per nainute (gpm)
<br />(0,95 L/s). "I'he discharge piping from the sump pump
<br />shall be not less than 1%z inches (40 mm) in diameter
<br />and have a union or �ther approved quick-disconnect
<br />assembly to make the pump accessible for servicing.
<br />1101.5.3 Splash BloCks. kor separate dwellings not
<br />serving continuously flowing springs or groundwater,
<br />the sump discl�arge pipe shail be permitt�d to discharge
<br />onto a concrete splash block with a minimum length of
<br />24 inches (610 mm). This pipe shall be within 4 inches
<br />(102 mrn) of� t3�e sPl�ish blo�k az�cl ��ositioi.ieci to dir��,ct
<br />the flow parallel to the recessed line of the splash
<br />block.
<br />1101.5.4 Backflow Protection. Subsoil drains
<br />subject to backflo�v where discharging into a storm
<br />drain sliall be provided with a backwater valve in the
<br />drain line so located as to be accessible for inspection
<br />and maintenance.
<br />11Q1.5.5 Open Area. Nothing in Section 11Q1.5
<br />sha11 prevent drains that serve either subsoil drains or
<br />areaways of a detached building from discharging to a
<br />properly gradeci open area, provided that:
<br />(1) 'They do not serve contirniously tlowing springs or
<br />groundwater.
<br />(2) The point of discharge is not less than 10 feet
<br />(3048 mm} from a property line.
<br />(3) It is iinpraeticable to dischargc such drains to a
<br />storm drairi, to an approved water course, to the
<br />fi-ont street curl� or gutter, or to an alley.
<br />1101.6 Building Subdrains. I3uilding subdrains located
<br />bclow the public sewer level shail discharge it�to a sump or
<br />receiving tank, the eontents of whieh shall be automatically
<br />lifted and discharged into the drainage systern as required
<br />far building sumps.
<br />1101.7 Areaway Drains. Open subsurface space adja-
<br />cent to a building, seiving as an entrance to the bascment or
<br />cellar of a building, shall be provided with a drain or
<br />drains. Such area��-ay drains shall be not less than 2 inches
<br />(50 nm1) in diameter for areaways at a inaximutn of 100
<br />square feet (9.29 mz) in area, and shall be dischargcd in thc
<br />manner provided for subsoil drains not serving continu-
<br />ously flowing springs or groundwatcr (see ;Section
<br />137
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