Civil and Environmental Engineering Answers

28. In modeling a nonrigid mat foundation by using elastic springs, should a uniform modulus of subgrade reaction be used along the whole base of mat?

8. According to Gay-Lussac law for a perfect

gas, the absolute pressure of given mass varies directly as

(a) temperature  

(b) absolute

(c ) absolute temperature, if volume is kept

constant

(d) volume, if temperature is kept constant

(e) remains constant,if volume and

temperature are kept constant

11. Nowadays, most flap valves are made of HDPE. What are the advantages of using HDPE when compared with cast iron?

9. What are the functions of bedding under stormwater drains?

25. How do engineer determine the number of cells for concrete box girder bridges?

14. What is the function of rebate in a typical construction joint?

1. What are the functions of different components of a typical expansion joint?

Initial setting time of cement for asbestos cement products should be not less than

A.30 minutesB.50 minutesC.75 minutesD.90 minutes.

For melting one tonne of cast iron

A.700 m³ air is required

B.20 kg limestone is required

C.one quintal coke is required

D.all the above.