Every house drain or private sewer which passes
under a house or building or within three feet of the cellar wall
of any house or building shall be cast-iron pipe.
A cast-iron running trap, in no case less than
four inches with two cleanout hubs, shall be placed in the house drain
either inside or outside the foundation on the sewer side of all connections,
except a Y-fitting, to receive the discharge of an automatic sewage
ejector, oil separator or boiler blowoff where they are used. If placed
below the cellar floor or in a driveway, the trap shall be made accessible,
in a suitable masonry manhole with iron cover.
A fresh-air inlet pipe shall be connected with
the house drain just inside the house trap, with a separate fitting
in the drain, and extended to the outer air, terminating with a return
bend with open end one foot above the surface of the ground, or through
foundation wall with quarter bend looking down in a location approved
by the Building Inspector and shown on plans.
A.
For a four-inch house drain, the fresh-air inlet shall
be four inches.
B.
For five-inch and six-inch house drains, the fresh-air
inlet shall be not less than four inches.
C.
For seven-inch and eight-inch house drains, the fresh-air
inlet shall be not less than six inches.
D.
For ten-inch and twelve-inch house drains, the fresh-air
inlet shall be not less than eight inches.
A.
Every building shall be kept provided with proper
metallic gutters and rain leaders for conducting water from all roofs
in such manner as shall protect the walls and foundation from injury.
In no case shall the water from any rain leader be allowed to flow
upon the adjoining property.
B.
Outside leaders may be made of sheet metal.
A.
Where there are more than two water closets on a line,
all underground piping shall be a minimum of four-inch standard cast
iron to the first water closet, then stepped down to three-inch standard
cast iron below ground or three-inch PVC if above ground to the other
water closets.
B.
Where there are two or less water closets on a line,
all underground piping to both shall be a minimum of three-inch cast
iron.