Thailand Water Supply System Project By: Stephen Bonk (Team Leader) Kevin Dischino Joseph Moore Preliminary Site Assessment Village of Hantham: subset of Longkhot, Thailand Inadequate water supply during the dry season 159 Households and 453 People Average Water Usage: 200 L/day per Household Gathered Survey Data Collected Soil Sample Determined available resources
Survey Data Design Goals Supply entire village Sustainably powered pumping system Easily maintained and constructible Storage System Distribution System O & M Manual Extremely Economical Water Resources and Hydraulics Design Water Usage Average Annual Water Usage is 200 L/day per
Household Total Village Usage is 1,123 cf/day Total Tank Volume for 3 day supply = 3,369 cf Maximum Hourly Flow per Year is 270% of Average Flow per Year Maximum Hourly Flow per Year = 0.0351 cfs Minimum Storage Tank Elevation Must provide adequate water pressure for highest household in the village Is structure required to provide additional elevation? Minimum Storage Tank Elevation
Minimum Storage Tank Elevation Minimum Storage Tank Elevation Major Head Loss in Pipe A: 1 in Diameter Major Head Loss = 323.5 ft 2 in Diameter Major Head Loss = 11.7 ft 3 in Diameter Major Head Loss = 1.7 ft Minimum Diameter of Pipe A for Maximum
Velocity of 10 fps = 0.8 in 3 in Diameter Pipe Selected Minimum Storage Tank Elevation Using 3 in Diameter Pipe A Site 1 and Site 2 Inadequate Site 3 Adequate, No Tower Necessary Place Storage Tanks at Site 3, Ground Level Orange House Water Pressure will be 4 psi under Dynamic Conditions during Max Hour Flow
Pumping System Submersible Pump Pusher Pump System Energy Pumping System 1 in Pipe System Head Curve 800.00 700.00 600.00 Head (ft) 500.00 400.00 300.00 200.00 100.00
Manufacturer Specifications for Pumps Solar Panel System Power Requirements Tank Level Switch Water Distribution System Design Site View Process Split Section A into Pipe Branches Maximum Hourly Flow per Year:
2.207x10^-4 cfs for each household Determine flow through each Pipe Darcy Weisbach Equation Reynolds Number, /DD Use of WaterCAD Section A Schematic Pipe 7 = 275 ft. Pipe 6
250 ft. Pipe 3 200 ft. Pipe 2 320 ft. Pipe 5 350 ft.
Pipe 1 445 ft. Pipe 4 = 200 ft. Design of Pipe 1 Assume Maximum Velocity between 10-20ft/ s Find Minimum Diameter needed (A = Q/V) For Pipe 1 of 13Q:
Diameter = 0.16 0.23 For 0.25 Diameter Head Loss = 658 feet (Too Large) For 1 Diameter Head Loss = 0.98 feet For 2 Diameter Head Loss = 0.0242 feet WaterCAD Schematic Input / Output Total Head Loss Hand Calculations
Water Tank Design Type Reinforced Concrete Rectangular Tank (25x25x6) Fiberglass or Reinforced Concrete Circular Tank ( Dia.=18) 12 thickness of wall and 8 slab. Formwork
Availability Reinforced Concrete only available, no fiberglass Cover: Reinforced Concrete or Sheet Metal Placement: Site 3 Construction Time Rectangular Cantilever Concrete Tank Height: 6 feet Depth of Embedment: 2 feet Top of Wall: 8 Concrete Heel and Toe slab use same reinforcement Water Stirrup (Rubber) Rectangular Cantilever Storage Tank
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