NPCP 3 general rules repeat

it shall be unlawful for any person to cause, suffer or permit the disposal of sewage, human excrement or other waste waters in any place or manner, except through and by means of an approved______ installed and maintained

• Excreta and Storm Drainage Systems

• storm drainage only

Horizontal drainage pipes shall be run in practical alignments and at a uniform slope between manholes of not less than _____ toward the point of disposal

• 20 mm/m or 2%

• 10 mm/m or 1%

such pipe or piping 102 mm or larger in diameter may have a slope of ____ provided it is first approved by the Administrative Authority.

• 10 mm/m or 1%

• 20 mm/m or 2%

Changes in direction of drainage piping shall be made by the use of approved pipe fittings and shall be of the angles presented by a 22 l/2° bend, 45° bend, 60° bend or other approved fittings of ____

• longer sweeps

• shorter sweeps.

Horizontal drainage lines connecting to a vertical stack shall enter through ____, combination wye and 1/8 bend branches, sanitary tee or other approved fittings of longer sweeps

• 45° or 60° wye branches

• 45° or 90° wye branches

No fitting having more than one inlet at the ____shall be used unless such fitting is constructed so that the discharge from one inlet cannot readily enter into the other inlet.

• same level

• below level

Vertical installation of _____ may be used when the barrel of the fitting is at least two (2) pipe sizes larger than the largest side inlet.

• double sanitary tees

• double sanitary wye

Horizontal drainage lines connecting to other horizontal drainage lines shall enter through _____, combination wye and 1/8 bend branches or other approved fittings of longer sweeps.

• 45° wye branches

• 60° wye branches

Vertical drainage lines connecting to horizontal drainage line shall enter through 45 degree branches, or other approved fittings of longer sweep.

Sixty (60) degree branches or offsets may be used only when installed in a ____

• true vertical position

• true horizontal position

Every building where plumbing fixtures are installed shall have a sewer service connection to a ___ sewer systems

• public or private

• public only