L5_READINGS

Question 1

No galvanized wrought iron or galvanized steel pipe shall be
used underground and shall be kept at least ____ above ground

Answer 1

152 mm

Question 2

____ and ____ piping installations shall be used in high-rise
buildings, provided that its use shall be the discretion of the Master Plumber/Designer and also with the full consent of the owner

Answer 2

ABS and PVC DWV

Question 3

No ______ or fittings for building drain or sewer shall
be used above ground or whenever piping is pressurized by a pump or ejector. They shall be kept at least ______ below finish ground level

Answer 3

vitrified clay pipes
0.3 meter

Question 4

Drainage fittings shall be of cast iron, malleable iron,
lead, brass, copper, ABS, PVC, vitrified clay, or other
approved materials having a _________ as the piping served and all such fittings shall be ______ with the type of pipe used.

Answer 4

smooth interior waterway of the same diameter
compatible

Question 5

Fittings on screwed pipe joints shall be of the_________. Burred ends shall be reamed to the full bore of the pipe.

Answer 5

recessed drainage type

Question 6

The threads of drainage fittings shall be _______ to allow
two (2) percent or 21 mm/m grade

Answer 6

tapped