Section 7-House Sewers and Storm Water Flashcards
(51 cards)
DWV and plumbing system that is new shall be ________ and _____ of other buildings and the building shall have a(n) ____________ connection with the sewer
separate and independent
independent
A building sewer may serve addition buildings and still be considered as one sewer if the additional buildings are
used in conjunction with the primary, contained within the same deed as primary, restricted within the deed form being sold separately as primary building
An excavation for a sewer shall be _______ work and shall be _________ until
open trench work, kept open, it has been inspected, tested, and approved
The sewer shall be at a _______depth to ______
sufficient, properly serve a plumbing connection installed in the basement
A house sewer shall be laid on a grade of
not less than 1/8 in nore more than 1/4 per foot
A sewer shall have at least ______ of cover
18in
Sewer piping installed under property subject to vehicular traffice) shall have at least _______ of cover unless
24 in
sch 40 or 80 cast iron encased in a min 6in of concrete on each side and top and covered to prevent direct contact with concrete
Sewer shall be backfilled by hand and _________
tamped 6in above or filled with 6in grillage above.
If less than 18 in of cover is available what should be done
a request for a variance submitted to the division in writing
A house sewer or combined sewer shall be made of ….
extra heavy and service weight CI, vitrified clay, concrete, PVC or ABS, Cell core PVC or ABS, Truss pipe, extra heavy SDR 35, type PS 46, PVC sizes 4in-15in, PVC ribbed and coextruded composite, PE
A storm sewer inside a building extending 2ft outside in sizes 8in and smaller shall be made of
CI, aluminum, sch 40 ABS or PVC DWV pipe
A storm sewer size 10in or larger shall be made of
CI, aluminum, schedule 40 ABS or PVC DWV pipe, SDR 35, vitrified clay or contrete, PE
Roof drain shall have _______ extending not less than _____ above the surface of the roof immediately adjacent to the roof drain and shall be no less than ______ the area of the conductor or leader
strainers, 4 in
1.5 X
Roof drain strainer on _____________ may be of the flat surface type, installed ____ with the deck , with inlet area not less than _____ the area of conductor or leader
sun decks, parking decks or similar
level
2X
Secondary (emergency) roof drains shall be provided where and what is required for them
the roof perimeter construction allowing ponding if primary roof drains become blocked
requirements: piping and point of discharge separate from primary, discharge above grade plane in location normally observed by building occupants or maintenance personnel
Primary and secondary roof drains shall be sized according to
size of storm systems table
Change of direction of a sewer shall be made only with
long curves, 45 wyes, half wyes, quart, sixth, eighth, 16th bends or sanitary tees in on back or side but not more than 45 degrees
Minimum size of a house sewer
4in nor less than that of house drain
A storm sewer shall not be laid paralell to or within ___ft of a ______
2, bearing wall
A storm sewer shall be laid at sufficient depth to protect it from
freezing
Combined house drain or sewer shall not be less than _____
4in and not smaller than required for same FU’s or same roof area in seperate systems
For building after Aug 1 1996, each plumbing fixture or opening connecting to combo sewer shall either be installed __________ or discharge _________
above elevation of the cover of nearest manhole serving the main
through a sewage ejector to the combo sewer system at an elevation high enough to prevent flooding of the building
A house sewer laid in undisturbed ground shall be laid at on at least ______
4in pea gravel, sand, or other approved grillage
A storm sewer laid in undistributed ground requires
no grillage
