List 3 Prohibited Fittings - ✔✔-No fitting that incorporates a straight T branch shall be used as a
drainage fitting.
- No running threads, bands or saddles shall be used in a drainage
system. -A fitting commonly referred to as a "Sisson Joint" is prohibited
A dead end may be used to? - ✔✔Extend the cleanout.
Where trenches are excavated below grade such that the bottom of the trench does not form the bed
for the pipe, the trench shall be? - ✔✔back-filled to grade with sand tamped in place so as to provide a
uniform bearing surface for the pipe between joints.
Where rock is encountered in trenching, The rock shall be removed to a point - ✔✔at least three inches
below the grade line of the trench and the trench shall be backfilled to grade with sand tamped in
place so as to provide a uniform bearing for the pipe between joints; and b. care shall be exercised to
ensure that no portion of the pipe, including its joints, rests on any portion of a rock
Backfilling. 1. Until the crown of the pipe is covered by at lest____________ feet of tamped earth
considerable care shall be exercised in backfilling trenches - ✔✔two feet
,When are deviations from the plumbing code permited? - ✔✔-Existing buildings for repair or remodel
work
-Inspectors permission prior to the start of the job
-They are necessary and conform to the intent of the code
If a plumbing inspector finds code violations in any existing plumbing or gas system that may cause
a health or safety hazard the inspector shall...? - ✔✔Notify the owner or his or her agent.
List two requirements when demolishing a building? - ✔✔1. You must secure a plumbing permit
2. Must make all connections gas and water tight.
Storm or sanitary drains shall be installed at a slope that produces a computed velocity of discharge of
not less than - ✔✔two feet per second
What fitting could you legally install that the branch is larger than the main? - ✔✔4x3 closet bend (The
enlargement of a three-inch closet bend or stub to four inches shall not be considered an obstruction).
Trenching, Tunneling and Back-filling Where rock is encountered in trenching - ✔✔The rock shall
be removed to a point at least three inches below the grade line of the trench
Where trenches are excavated below grade such that the bottom of the trench does not form the bed
for the pipe - ✔✔the trench shall be back-filled to grade with sand tamped in place so as to provide a
uniform bearing surface for the pipe between joints.
,Backfilling. 1. Until the crown of the pipe is covered by at - ✔✔at least two feet of tamped earth
considerable care shall be exercised in backfilling trenches
Meter boxes shall be constructed in such a manner that - ✔✔rats cannot enter a building by
following the water service pipe from the box into the building
All strainer plates on drain inlets shall be designed and installed so that the diameter of the opening
is no greater than...? - ✔✔1/2"
Piping in Relation to Footings. (a) Outside of Footings. Piping which is installed outside of and below
a footing shall not - ✔✔destroy the bearing value of the soil
Through or Under Footings, Foundations or Walls. No pipe shall be installed through or under a
footing, foundation or wall, except when - ✔✔a provision is made in the footing to carry the building
or structural loads without transmitting such loads to the pipe.
Sewage Disposal Connections (Buildings). (a) The plumbing of each building shall have an independent
connection to a public sanitary sewer outside of building, unless - ✔✔in the opinion of the Inspector,
a single separate connection is not feasible.
materials not covered by the standards listed in 248 CMR 10.06 may be used with the approval of
the...? - ✔✔approval of the State Board
Allowable Materials. (a) When installing fittings or piping for renovations or alterations within an
existing soil stack, waste stack, vent stack or drain, the fitting or piping shall be of the - ✔✔same
, material as the existing stack or drain and be compliant with a joining method outlined in 248 CMR
10.07
Exception: In new residential construction ____________ pipe may be used exclusively with PVC
for sound reduction - ✔✔Cast Iron
Sheet Lead. shall meet the following requirements: 1. For a safe pan the sheet lead shall not be less than
- ✔✔four pounds per square foot
For vent terminal flashing the sheet lead shall not be less than - ✔✔three pounds per square foot. 3lbs
Sheet Copper. Sheet copper shall not be less than - ✔✔12 ounces per square foot when used in
the following applications:
1. safe pan;
2. shower pan;
3. flush tank linings;
4. vent terminal flashing; or
5. general use.
Floor Flanges. A floor flange used for a toilet or other similar fixture shall conform to the following
requirements - ✔✔-If the flange is composed of brass, the flange shall have a minimum thickness of
1/8" inch
-If the flange is composed of cast iron the flange shall have a minimum thickness of ¼ inch, and
the minimum caulking depth shall be two inches.
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