Engineering Answers

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

15. If a contractor proposes to increase concrete cover beyond contractual

specification (i.e. 40mm to 70mm), shall engineers accept the proposal?

12. In erection of falsework, for a rectangular panel inside a falsework should it be braced along the two diagonals?

11. What is the indication of shear slump and collapse slump in slump tests?

16. Can grout replace concrete in normal structure?

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?

9. Comparing the rate of “Formwork exceeding 300mm wide, horizontal or at any inclination up to and including 5o to the horizontal” with the rate of “Formwork exceeding 300mm wide, at any inclination more than 85o up to and including 90o to the horizontal”, which one is higher?

5. In concrete compression test, normally 150mmx150mmx150mm concrete cube samples is used for testing. Why isn’t 100mmx100mmx100mm concrete cube samples used in the test instead of 150mmx150mmx150mm concrete cube samples?

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