BUILDING UTILITIES 1 Module 1 Lecture 1 - Fundamentals of Water Supply Systems Revised 2020.pptx - FUNDAMENTALS OF WATER SUPPLY SYSTEMS BUILDING

BUILDING UTILITIES 1 Module 1 Lecture 1 - Fundamentals of Water Supply Systems Revised 2020.pptx

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FUNDAMENTALS OF WATER SUPPLY SYSTEMS BUILDING UTILITIES 1 LECTURE 1
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BASICS OF WATER SUPPLY Water and its appropriate use are becoming an important part of design, especially the design of green buildings Every building designed today is supplied with potable water Most of this clean water is used to carry away organic waste Results in a wide range of design impacts affecting detailed bathroom fixtures arrangement, and the overall plans of large and complex water and sewage treatment facilities
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THE NEXT GREAT WORLD CRISIS WILL BE WATER SUPPLY
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Water for human consumption comes from one of two basic systems: Water from a well to supply an individual residence, well water for farmstead properties, and well water for small public sector properties that include schools, public buildings, and small commercial enterprises. Municipal water systems that provide potable water to a wide array of commercial property and domestic use buildings including apartments,
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28% 34% 12% 6% 6% 6% 4% 2% 2% 28% WC 34% bathing/shower 12% washing cloths 6% personal hygiene 6% wash dishes 6% cleaning 4% watering 2% cooking/drinking 2% cleaning cars POTABLE WATER CONSUMPTION OF PRIVATE HOUSEHOLDS
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it needs to deliver adequate amounts of water to meet consumer consumption requirements plus needed fire flow requirements. the water system needs to be reliable ; the required amount of water needs to be available 24 hours a day, 365 days a year. REQUIREMENTS OF A WATER SYSTEM
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BASIC WATER SOURCES FOR WATER SYSTEMS
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Surface Water Lakes, reservoirs, rivers Rivers dammed to create reservoirs Reservoirs store water during heavy rain/snow
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Aquifers (Groundwater) Primary source of drinking water Porous consolidated rock or unconsolidated soil Groundwater fills spaces Wells and pumps used to extract water Aquifer
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Well construction typically consists of three steps: A well will be drilled to meet all well construction standards in the area A trench is dug to connect the well to the system A well pump is selected that will raise water from the well and deliver it to a water treatment plant, then to a storage tank where it is held under pressure until needed WELL CONSTRUCTION
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WELLS AS SOURCES OF WATER Bored wells Are dug with earth augers, usually less than 30m deep Located in boulder- free sites that will not cave in Diameter range is 50 (2-in) to 760mm (30-in) Cased with metal, vitrified tile, or concrete
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Driven wells Simplest and usually the least expensive A steel drive-well point (32-50mm dia.) is fitted on the end of the pipe sections and driven into the earth A pilot hole is dug first, and the drive- well point and pipe sections are lowered into it Well is driven well
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Jetted wells Require a source of water and a pressure pump A washing well point is supplied with water under pressure ; this loosens the earth and allows the point and pipe to penetrate.
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Drilled wells Require elaborate equipment of several types Dug by either percussion method or rotary drilling method Percussion method involves raising and
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