HomeQuestions & AnswersPage 11Questions & Answers Ask question Search Order By: ActiveClear Filter 0 Votes 1 Ans Should air test or water tests be selected to test the leakage of constructed gravity pipelines? 155 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? 134 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? 172 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. 152 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? 154 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? 149 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the functions of bedding under stormwater drains? 149 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? 151 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the mechanism of cavitation in pipes and drains? 131 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? 143 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans Why is it preferable to design stormwater drains to match soffit? 171 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? 150 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What are the limitations of Rational Method in calculating runoff? 170 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? 147 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the purpose of skin reinforcement for deep beams? 138 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans What is the difference between epoxy grout, cement grout and cement mortar? 154 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? 127 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? 153 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? 162 viewsadmin Changed status to publish July 27, 2024 0 Votes 1 Ans General Specification for Civil Engineering Works (1992 Edition) Clause 15.09 specifies that tying wires for reinforcement adjacent to and above Class F4 and F5 finishes should be stainless steel wires. Why? 156 viewsadmin Changed status to publish July 27, 2024« Previous 1 2 … 9 10 11 12 13 Next »