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Due to the high price of CPVC 1/2" caps, other options for plate settler construction are being considered. Below is a cost analysis of other options that have been proposed.
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Costs are based on one sedimentation tank.
One sheet of lamina is 900 Lempiras, and is 12 feet long. Each lamina in the plate settler is 3 feet long, so four lamina can be made from one sheet. The tank is 4.3 meters long, and there are lamina every 5 cm, so 86 lamina are needed, or 29 sheets per tank.
The tank dimensions are 14 feet long by 42 inches wide, giving an area of 49 square feet.
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The cost of couplings and pipe were taken off Mcmastercarr.com, and may not reflect actual prices in Honduras.
The couplings are 4 cm long, therefore lamina spacing is 4 cm rather than 5 cm. This means that a total of 36 twelve foot sheets of lamina are needed.
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IFR-6036 tube settler cost approximately $24 per square foot.
plate settlers in 3' lengths and 42" widths would be approximately $48 per square foot.