What is the maximum number of fixture units that maybe connected to a 125 mm diameter house drain pipe under 3% slope?
a. 162
b. 216
c. 264
d. 275
b. 216
A sink designed primarily to receive wastes from bedpans and having a flush rim, an integral trap with a visible trap seal, and the same flushing and cleansing characteristics as a water closet.
a. Blow-off sink
b. Hotel sink
c. Clinic sink
d. Sanitary sink
c. Clinic sink
It is adopted when the street drainage is higher in elevation than the basement floor of the building.
a. Overhead storm drain
b. Outside storm drain
c. Overhead feed drain
d. Inside storm drain
a. Overhead storm drain
Sanitary sewage is also known as,
a. Soil
b. Plumbing waste
c. Domestic sewage
d. Pipe sewage
c. Domestic sewage
Fixture unit value of 1 bathroom consisting of 1 water closet, lavatory, bathtub and overhead shower or water closet, lavatory and shower compartment.
a. 3
b. 5
c. 6
d. 8
d. 8
The unobstructed vertical distance through the free atmosphere between the outlet of water pipe and the flood level rim of the receptacle into which it is discharging.
a. Air break
b. Pressure gap
c. Air stop
d. Air gap
d. Air gap
What is the slope of a 125 mm diameter house drain pipe with 150 fixture units?
a. 2%
b. 3%
c. 4%
d. 5%
a. 2%
A device or means to prevent flow of liquid from returning to source of supply and also called vacuum breaker.
a. Backwater valve
b. Back-siphonage
c. Backflow preventer
d. Back-vent preventer pipe
c. Backflow preventer
A device installed in a drainage system to prevent reverse flow.
a. Backwater valve
b. Back-siphonage
c. Backflow preventer
d. Back-vent pipe
a. Backwater valve
Appropriate fittings for a storm drain.
a. Wye, 1/8 bend, long radius
b. Tee, 1/8 bend, long radius
c. Wye, 1/4 bend, long radius
d. Wye, 1/8 bend, short radius
a. Wye, 1/8 bend, long radius
The date when the Water Code is signed.
a. December 20, 1971
b. May 25, 1973
c. May 25, 1975
d. December 31, 1976
d. December 31, 1976
The most preferred type of back flow valve because it has the characteristics of non-interferences in the movement of air inside the drainage system.
a. Interference valve
b. Unbalanced valve
c. Non-interference valve
d. Balance valve
d. Balance valve
Reduces the action scouring in the pipe, thus the solid waste are carried along the bottom of the pipe.
a. Undersize house sewer
b. Oversize house drain
c. Domestic sewage drain
d. Sanitary sewer
b. Oversize house drain
Storm drain is installed provided a slope of not more than _____ per meter run.
a. 0.5 %
b. 1%
c. 1.5%
d. 2%
d. 2%
It occurs due to an increased reverse pressure above the supply pressure.
a. Back pressure backflow
b. Back-vent pipe
c. Backflow connection
d. Back pressure siphonage
a. Back pressure backflow
It is a device installed in a house drain immediately inside the foundation wall of the building.
a. Soil trap
b. Main trap
c. House trap
d. Sewer trap
c. House trap
It is also known as the collection line of a plumbing system.
a. House drain
b. Soil drain
c. Waste drain
d. Main drain
a. House drain
A room equipped with a shower stall or bathtub.
a. Bathroom group
b. Bathroom
c. Shower room
d. Half bathroom
b. Bathroom
