- STANDARD COMMERCIAL SIZE OF GI PIPE FOR WATER SUPPLY:
- 1 ⅓
- 2 ½
- 4
- LOCATION FOR CLEAN OUT:
- any horizontal waste or soil pipe exceeding 15m
- at the upper end of every branch 22.5º and over
- ZEOLITE – treatment of hard water
- MAIN VENT – principal artery of venting system to which vent branch pipe may be connected
- COMMON VENT– single vent that ventilates multiple traps of back-to-back fixture
- AIR OUTLET – an air-generated device to open or close a damper or valve
- SEPTIC TANK: location and features
- 15 meters away from potable water
- if there’s a public sewer pipe, a septic tank is not allowed
- no septic tank under the house
- inlets and outlets are submerged
- the bottom tank should have a slope of 1:10 mm towards
center - top cover 0.15 m above the soil
- 0.30 m air space
- 0.50 lower- inlet
- 0.025 lower- outlet
- VOLUME OF SEPTIC TANK
- min-width- 0.90
- min length- 1.50
- min depth- 1.80
- for residential- 0.14 to 0.17 per person
- 12 persons- not more than 2.0 cum
- schools, industrial- 0.057 cum per person minimum 0.86 cum maximum
- MATERIALS FOR PLUMBING INSTALLATIONS
- galvanized iron
- (G.I) steel pipes
- 15-20 years life span
- deteriorates fast when used for hot water
- corrodes w/ alkaline and acid water
- made out of mild steel
- plastic or synthetic pipe
- rigid
- polyvinyl chloride (PVC)
- chlorinated polyvinyl chloride (cPVC)
- unplasticized polyvinyl chloride (uPVC)
- polypropylene (PP)
- acrylonitrile butadiene styrene (ABS)
- styrene rubber plastic (SR)
- flexible
- polyethylene (PE)- coil form at 30 mts
- polybutylene (PB)- up to 150 mts long in coil form
- rigid
- cast iron pipe
- durable
- use for less than 25 story because water leak due to vibration
- 2 types:
- SV- for building installations
- XV- for underground installation
- acid resistant cast iron pipe- made of alloy, cast iron & silicon
- installed in chemical labs for acid waste
disposal
- installed in chemical labs for acid waste
- asbestos pipe- made of asbestos fibers & Portland cement
- suitable for embedment on concrete structures
- bituminous fiber sewer pipe
- cheapest and lightest
- for house sewer
- vitrified clay pipe
- made of clay & w/ length of 0.75 m threaded
w/ glazed compound. High resistant to acid & suited for underground installation. Brittle cracks easily when laid on unsuitable ground
- made of clay & w/ length of 0.75 m threaded
- lead pipe
- One of the oldest plumbing materials. Not
recommended conveying water for human consumption.
- One of the oldest plumbing materials. Not
- galvanized wrought iron pipes
- better than steel pipes for plumbing because it is more resistant to acid waste
- brass pipe
- most expensive. Made of an alloy of zinc & copper mixed 15%:85% highly suitable for waste & water because of its smooth surface aside from its high resistance to acids
- copper pipes
- durable material w/c is extremely corrosive
resistance. Easiest to install - Types
- K- heaviest for underground installation
- L- lighter than K, comes in flexible & rigid type
- M- thinner & available only in rigid form
- durable material w/c is extremely corrosive
- galvanized iron
Read: Free Plumbing Review Guide 2022 (Part 1)
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