Building Utilities 1: Sanitary System PDF

AR 213 - Building Utilities 1 sanitary system Ar. Hannah RMG N. Nidea, RMP  plumbing system components plumbing system components Water Supply and Distribution System Cold Water Supply System Hot Water Supply System plumbing system components Sanitary Piping System Soil Piping Syst...

AR 213 - Building Utilities 1 sanitary system Ar. Hannah RMG N. Nidea, RMP  plumbing system components plumbing system components Water Supply and Distribution System Cold Water Supply System Hot Water Supply System plumbing system components Sanitary Piping System Soil Piping System House Drain Waste Piping System House Sewer Direct Waste Piping System Drainage Cleanouts Indirect Waste Piping System Plumbing Traps Ventilation System plumbing system components Plumbing Valves Storm Drainage Systems Sewage Disposal System Plumbing Fixtures  3 major components of drainage system 3 major components of Drainage system Drainage system Drainage Waste vent drainage system All the piping within a public or private premises which conveys sewage, rainwater or other liquid wastes to a point of disposal. A drainage system does not include the mains of public sewer systems or a private or public sewage treatment or disposal plant. Sanitary (WASTE) Drainage and Vent Piping System The sanitary drainage and vent piping system are installed by the plumber to remove wastewater and water-borne wastes from the plumbing fixtures and appliances, and to provide circulation of air within the drainage piping. 3 degrees of waste water 1. Black Water (Drainage) - with fecal matter 2. Grey/Waste Water (Waste) - without fecal matter 3. Storm Water (Waste) - rainwater sanitary piping layout sanitary piping layout General Rules in Designing Sanitary System The pipes should take the shortest possible route to the house sewer or the terminating point of the sanitary system. Control components such as clean-outs, traps, and vents, should be located strategically to ensure efficient circulation. Elements of sanitary system elements of sanitary system Waste Pipe Vent Pipe Trap Stack Branch House/Building Drain House/Building Sewer waste pipe A pipe that conveys only liquid waste, free of fecal matter. Note: A waste pipe is generally smaller than a soil pipe because of the nature of matter being discharged into the system. vent pipe Used for ensuring the circulation of air in a plumbing system and for relieving the negative pressure exerted on a trap seal. trap A fitting or device designed and constructed to provide, when properly vented, a liquid seal which prevents the backflow of foul air or methane gas without materially affecting the flow of sewage of waste water through it. stack The vertical main of a system of soil, waste or vent piping, extending through one or more stories and extended thru the roof. Waste Stack Soil Stack Vent Stack Stack Vent branch Any horizontal part of the piping system other than a main, riser or stack. Waste Branch Soil Branch house/building drain The lowest horizontal piping of a plumbing system which receives the discharges from the soil, waste, and other drainage pipes inside of a building and conveys it to the house sewer outside of the building. It begins 0.6 m outside the building wall. house/building sewer That part of the drainage system that extends from the end of the building drain and conveys its discharge to the public sewer, private sewer, individual sewage disposal system, or other appropriate point of disposal. drain & sewer boundaries 1. 0.60 m from the outside of the building wall 2. From the property line 3. From the cleanout SANITARY DRAINAGE LINES SANITARY DRAINAGE LINES A. Unit of Measurement Sizes The size of waste pipes or soil pipes depend on the amount of waste it carries. A lavatory discharge 0.47 liters/sec or 28.3 liters/min. (7.5 gallons per min. or 1 cu. ft. per min.) which is equivalent to the Fixture Unit (F.U.) SANITARY DRAINAGE LINES A. Unit of Measurement Sizes The NPCP strongly endorsed the use of Drain Fixture Unit (DFU) Value as waste load in determining the size of the waste pipe. Drain Fixture Units is the unit of measure, based on the rate of discharge, time of operation and frequency of use of a fixture.  Drain Fixture Unit Table 1 Fixture Unit = 1 cubic ft or 30L of waste discharged by the fixture in one minute interval Size of Branch and Stack  Size of Branch and Stack Example: 1. Find the Drain Fixture Unit load of the following fixtures: 5 urinals x 5 units = 25 units 3 lavatories x 1 unit = 3 units 8 showers x2 units = 16 units 2 slop sink x 3 units = 6 units Total = 50 units 2. Under the column one horizontal branch, 50 units could be well served by a 100 mm or 4 in pipe. Recommended size of waste pipe SANITARY DRAINAGE LINES B. Maximum Trap Loading SANITARY DRAINAGE LINES C. Discharge Capacity SANITARY DRAINAGE LINES D. Mimimum Slope of Sanitary Drainage Lines Minimum slope or pitch of horizontal drainage pipe – 2% or 20mm/m (1/4” per foot) Exception: Where it is impracticable due to depth of street sewer, adverse structural features and irregular building plans, pipes 102 mm diameter or larger may have a slope of not less than 1% or 10mm/m (1/8” per foot), approved by the Administrative Authority. SANITARY DRAINAGE LINES D. Mimimum Slope of Sanitary Drainage Lines waste pipe and other fixtures 2 types of waste and the kind of fixture it will serve 1.Direct Waste Direct Waste is one with the terminal directly connected to the plumbing system. 2 types of waste and the kind of fixture it will serve 1.Direct Waste Fixtures Urinals & Water Bathtub Lavatory Sink Closets Siltz Wall Hang Kitchen Foot Pedestal Pantry Bidet Two Pieces Slop 2 types of waste and the kind of fixture it will serve 1.Direct Waste Fixtures Showers Drinking Laboratory and Single Stall Fountain Hospital Fixture Gang 2 types of waste and the kind of fixture it will serve 2. Indirect Waste Indirect Waste refers to a connection with terminals not directly connected to the plumbing system. 2 types of waste and the kind of fixture it will serve 2. Indirect Waste Fixture Soda Fountain Refrigiration Washing Machine end of slides