In this study, Learn about the design of reinforced concrete water conduit to resolve flooding problems in the community. The study area, Ban demanded Ngao Lampang This study aimed. A study of drainage problems in the community. The problem of flooding in the community with concrete water conduit and satisfaction to solve flooding communities with concrete gutters drain. The study was conducted by a survey of the area and terrain maps. Information rainfall The calculation of the maximum water flow (Design Discharge) the equation of Manning (Manning's Formula) to design a cross-section of the trough proper drainage. And satisfaction surveys to solve flooding communities with concrete gutters drain by using a questionnaire. (Questionnaire) scale has five levels, which are checked for content validity. With the way for the IOC (Index of Item-Objective Congruence, IOC) to determine the reliability of the engine by means of alpha coefficient - Akron BAC (Cronbach's Alpha), which is more valuable. 0.70 in this sample of 232 people,
the study found that the flooding in the area caused by a depression in the community are below street level. And no drainage system Troubleshooting can be done with the use of reinforced concrete, drainage gutters are designed according to the drain in the drainage trough size 1.00 x 0.80 m with a flow rate of gutters drain Q = 0.641 m /. seconds and speed the flow of drain water V = 0.801 m / s citizens are satisfied with the overall solution to flood the community with concrete gutters drain on many levels.
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