153.One fixture unit is equivalent to a.30 lit/min b.1 cu.m./ min c.1 cu.ft./min d.25 lit/min 154.For assembly places for public use, how many water closets are required if the capacity is 115 males? 155.In above scenario, how many urinals are required? 156.There shall be a minimum of ______drinking fountains per occupied floor in schools, theater, auditoriums, dormitories, offices or public building a.1 b.2 c.3 d.4 157.Drains in gutters in public shower rooms shall be spaced not more than___ apart 158.All shower compartments shall have a minimum finished interior area ______sq.m a.0.60 sq. m b.0.75 sq. m c.0.80 sq. m d.1.00 sq. m 159.Cast iron fitting up to and including 51mm in size, when used in connection with potable water piping shall be_____ 160.Water pipes shall laid a minimum of ______ above the sewer or drainpipe 161.No building water service pipe shall be less than _____in diameter 162.Shower head used in private has ___water supply fixture unit a.1 b.2.5 c.3 d.2 163.Clean-outs shall be provided at every ____ length or a fraction thereof a.15 m b.10 m c.20 m d.18 m 164.Clean-out may be omitted on a horizontal drain line less than ____in length 165.The minimum slope required for 102 mm diameter pipe or larger drainage piping 166.Vent opening shall terminate not less than ____ from any window, door or any opening a.1.0 m b.0.90 m c.3.0 m d.0.30 m 167.In hospital wards, 1 bath tub or shower shall be provided per ____ 168.Lavatories not affected by side walls, with effective opening not greater than 13 mm dia. Has minimum air gap of _____ a.25 mmm b.½ inch c.38 mm d.2 inch 169.Water supply wells shall be located at least _______ from building sewer 170.Gate valve used in drainage work having a 102 mm diameter or larger shall have ____bodies a.Cast iron b.Cast brass c.Bronze d.Galvanized iron 171.Manhole in septic tank shall be provided with minimum dimension of _____ a.600 mm b.508 mm c.400 mm d.458 mm 172.Roof deck strainers shall have a total net inlet area less than ______ times the area of the outlet pipe to which the drain is connected.
173.Which of the following fitting is not recommended to be used in the change of direction in drainage line?