2. If ? = nominal diameter of reinforcing bar, fs = compressive stress in the bar and fbd= design bond stress of concrete, the anchorage length, La of straight bar in compression is equal to :
4. Two flow patterns are represented by their stream functions ?1 and ?2 as given below: ?1 = x2 + y2, ?2 = 2xy If these two patterns are superimposed on one another, the resulting streamline pattern can be represented by one of the following :
Correct Answer: section of sewer which is dropped below the hydraulic grade line in order to avoid an obstacle.
6. An outlet irrigates an area of 20 ha. The discharge (l/s) required at this outlet to meet the evapotranspiration requirement of 20 mm occurring uniformly in 20 days neglecting other field losses is