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? 223 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? 212 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? 197 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? 234 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. 206 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? 211 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? 211 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the functions of bedding under stormwater drains? 208 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? 208 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the mechanism of cavitation in pipes and drains? 197 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? 222 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Why is it preferable to design stormwater drains to match soffit? 274 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? 230 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the limitations of Rational Method in calculating runoff? 280 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? 233 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the purpose of skin reinforcement for deep beams? 211 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the difference between epoxy grout, cement grout and cement mortar? 219 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? 192 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? 235 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? 241 viewsadmin Changed status to publish July 27, 2024« Previous 1 2 … 9 10 11 12 13 Next »
