CODE REQUIREMENTS FOR TRAPS AND INTERCEPTORS

1

Not more than _______ trap shall be permitted on a trap arm

3, 3

1 trap may serve:

• _____ single compartment sink of the same depth •

• ______ lavatories immediately adjacent to each other not more than 0.75m apart. •

• In no case any tailpiece or connections shall exceed 0.6m long

two

Each fixture trap shall have a protecting vent so located that the developed length of the trap arm from the trap weir to inner edge of the vent shall be within the distance, but in no case less than __________ times the diameter of the trap arm.

51, 102

Each fixture trap shall have a water seal of not less than _______mm & not more than ______mm deep.

152

Industrial interceptors and separators shall be so designed and located as to be readily accessible for cleaning and shall have a water seal of not less than _________ mm deep

TRUE

true or false

grease interceptor is not required for individual dwelling units or for any private living quarters

FALSE

true or false

Water closets, urinals, and other plumbing fixtures conveying human waste shall be drain through the grease interceptor.

TRUE

true or false

Each fixture discharging into a grease interceptor shall be individually trapped and vented in an approved manner.

2 ½

The total capacity in gallons of fixtures discharging into any hydro mechanical grease interceptor shall not exceed ___________ times the certified GPM flow rate of the interceptor

2, 610

sand interceptors shall have a dimension of _______ ft square for the net free opening of the inlet section & a ________mm min. depth under the invert of the outlet pipe.

INDEPENDENT SYSTEMS

– drainage system of each new building and of new work installed in any existing building shall be separate and independent from that of any other building, when available, every building shall have an independent connection with a public or private sewer

BITUMEN

Void between pipes & sleeves through concrete floors in the ground shall be appropriately sealed with _____________

45

The bottom of all pipe trenches deeper than the footing of any adjacent building or structure & parallel to it must be at least ________degrees therefrom, unless permission is granted by Administrative Authority.

0.6, 0.3

No building sewer or other drainage pipings or part thereof, constructed of materials other than that approved for use under or within the building, shall be installed under or within ______ m of any building or structure, nor less than __________m below the finish ground surface

15

for vertical piping, Cast Iron Soil Pipe - Bell & Spigot & Hubless pipe shall be supported at every storey or closer. Base and each floor not to exceed _____ ft

3m

for vertical piping, Copper Tubing - shall be supported at each storey or at a maximum intervals of _______

1.2

for vertical piping, Lead Pipe - shall be supported at intervals not exceeding _____m at centers

1.5, 3

for horizontal piping, Lead and Oakum connection shall be supported at not more than ________m intervals, except that pipe exceeding 1.5m length may be supported at not more than _____m intervals

1.2

for horizontal piping, hubless or compression gasket joints must be supported at least every other joint except that when the developed length between supports exceeds _____m, they shall be provided at each joint.

3, 3.6

for horizontal piping, Screwed Pipe - IPS shall be supported at approximately ______m intervals for piping 20mm diameter & smaller & _______m intervals for piping 25mm & larger in diameter

1.8, 3

for horizontal piping, Copper Tubing - shall be supported at approximately ________m intervals for piping 38mm diameter & smaller & _____m intervals for piping 51mm & larger in dia.

0.6

tunnels shall have a clear height of ______m above the pipe & shall be limited in length to 1/2 the depth of the trench.

2.4

tunnels shall have a _______m max. length & shall be limited in length to 1/2 the depth of the trench.

0.3

Trenches shall be back-filled in thin layers of ______m above the top of the pipe with clean earth which shall not contain stones, boulders, cinders or other materials which can damage or break the pipes or cause corrosive action.