HomeQuestions & AnswersPage 11Questions & Answers Ask question Search Order By: ActiveClear Filter 0 Votes 1 Ans In designing of access ramps for drainage channels, why should the direction of access ramps be sloping down towards downstream? 274 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Should air test or water tests be selected to test the leakage of constructed gravity pipelines? 267 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans In selection of dams in drainage channels, what are the advantages of using rubber dams instead of steel-gate dams? 250 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans The spacing of manholes in straight sections for different pipe sizes is stated in Stormwater Drainage Manual. How are these figures arrived at? 294 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the functions of the following features observed in a typical manhole? (i) groove near benching, (ii) R.S.J. (iii) double seal manhole cover and (iv) u-trap with rodding arm. 271 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Nowadays, most flap valves are made of HDPE. What are the advantages of using HDPE when compared with cast iron? 263 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans In designing sewer pipes, why are vitrified clay pipes commonly used for pipe size less than 600mm while precast concrete pipes with PVC lining is used for pipe size exceeding 600mm? 267 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the functions of bedding under stormwater drains? 267 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans When a drainage system (i.e. u-channels with catchpits) is connected to a main drainage channel, a segment of short pipe is used. What is the reason of such arrangement? 269 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the mechanism of cavitation in pipes and drains? 256 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the application of inverted siphons? What are the disadvantages of using inverted siphons? 292 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Why is it preferable to design stormwater drains to match soffit? 366 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Why are some manhole covers made of cast iron while some are made of ductile iron? 302 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the limitations of Rational Method in calculating runoff? 391 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the function of waterstops in joints of box culverts and drainage channels? 305 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the purpose of skin reinforcement for deep beams? 280 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the difference between epoxy grout, cement grout and cement mortar? 293 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans For column reinforcements, why is helical reinforcement sometimes designed instead of normal links? 254 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the difference in application between open stirrups and closed stirrups in concrete beams? 305 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans For long slender structures like beams, propping is required after removal of formwork. Why? 304 viewsadmin Changed status to publish July 27, 2024« Previous 1 2 … 9 10 11 12 13 Next »
