Eng Utilities 2 "plumbing" Module 2 Jjmz

Front 1

All horizontal piping shall be run in practical alignment and at a uniform grade of not less than two percent (2%), 20 mm rise per meter length, and shall be supported or anchored at intervals not exceeding 3.0m (10 feet). All stacks shall be properly supported at · their bases and all pipes shall be rigidly secured.

Back 1

SECTION 154. Grades of Horizontal piping

Front 2

All changes in direction shall be made by the appropriate use of forty-five (45°) degree wyes, half wyes, long sweep quarter bends, except that single sanitary tees may be used on vertical stacks, and short quarter bends may be used in soil and waste lines where the change in the direction of flow is from the horizontal to the vertical. Tees and crosses may be used in vent pipes.

Back 2

SECTION 157. Change in Directions

Front 3

No double hub, double T branch shall be used on horizontal soil or waste line. The drilling and tapping of house drains, soil waste, or vent pipes and the use of saddle hubs and bends are prohibited.

Back 3

SECTION 158. Prohibited Fittings

Front 4

The joints of protruding pipes thru roofs shall be made water tight by the use of copper, lead or galvanized iron plates or flashings.

Back 4

SECTION 175. Roof Joints

Front 5

All roof extensions of soil and waste stacks shall be run full size at least one foot (0.30m) above the roof. If the roof is used for purposes other than weather protection, such extension shall not be less than eight feet (2.4m) above the roof level.

Back 5

SECTION 218. Roof Extensions

Front 6

Slip Joints will be permitted only in trap seals or in the inlet side of the trap.

Back 6

SECTION 176. SLIP JOINTS

Front 7

Each fixture shall be separately trapped by a water-seal trap placed as near to the fixture as possible except that a set of similar fixtures consisting of not more than three (3) wash basins, or a set of three (3) sinks may connect with a single 1 ½ inches trap. In no case shall the waste from a bath tub or other fixture discharge into a water closet trap. No fixture shall be double trapped.

Back 7

SECTION 182. Traps where required

Front 8

Each trap, except those in combination with fixtures in which the trap seal is plainly visible and inaccessible, shall be provided with an accessible brass tap screw of ample size.

Back 8

SECTION 184. Trap Clean Outs

Front 9

A clean out easily accessible shall be provided in the ff. conditions: 1. At the upper end of every horizontal waste or soil pipe. 2. At every change of horizontal direction, unless said change of direction is made at an angle of not more than 22.5 degrees and easily reached conveniently with sewer rod wire. 3. There shall be a clean out within 1.5m inside the property line before the house sewer connection, connected from a full-sized branch, except for the latter, clean outs shall be of the same nominal size as the pipes. 4. The distance between clean out in horizontal waste or soil lines shall not exceed 15m.

Back 9

SECTION 187. Pipe cleanouts where required

Front 10

No plumbing fixture waste except a bar sink, soda fountain sink and a drinking fountain waste, shall be installed or set up with an indirect connection to a home drain, soil, or waste pipe. The waste from every bar sink, fountain sink or drinking fountain, if not directly connected, shall discharge over a property vented and trapped floor drain located as near its practicable to the fixture.

Back 10

SECTION 250. Bar, soda and drinking fountain waste

Front 11

Every fixture trap shall be protected against siphonage and back pressure, and air circulation assured by means of a proper venting.

Back 11

SECTION 220. Traps protected vents

Front 12

No trap shall be placed more than 1.5m horizontally from its vent.

Back 12

SECTION 221. Distance of vent from trap seal

Front 13

Grease traps of adequate capacity must be installed wherever greasy wastes from hotels, restaurants, club houses, or similar public eating places are discharged into the sewer.

Back 13

SECTION 189. Grease Traps

Front 14

result of a minus pressure in the pipe created by heavy discharge of water from a fixture installed on a line serving another fixture at a lower floor.

Back 14

indirect or momentum

Front 15

caused by a plus pressure which blows the water out of the fixture.

Back 15

Back Pressure

Front 16

process is a minor problem and less probable to drain the water inside the trap. Evaporation happens only on floor drains not regularly used to admit water but is exposed to extreme temperature.

Back 16

Evaporation

Front 17

kind of trap seal loss seldom happen and is rarely experienced by homeowners. The condition is caused by a suspension of a foreign object such as a string, rags, strands of hair extended over the outlet arm of the trap.

Back 17

Capillary action