In a sieve analysis, 5% of the sample passes through 0.075 mm sieve and 25% passes through 4.75 mm sieve. Determine the % of coarse and fine aggregates as well as silt and clay materials.

Draw qualitative gradation curves for a well-graded and a gap-graded aggregate sample.

During a soil test, SPT value was found to be 20, explain its meaning. As a site engineer, at what stage will you stop the SPT test?

Write the names of the test to be performed to obtain the gradation or texture of fine grained soils?

Write three basic governing equations applicable for open channel flow as well as pipe flow.

Draw a typical flood hydrograph and a unit hydrograph for rivers of Bangladesh.

What is a rating curve? Write the equation of a typical rating curve.

Water requirement of a crop is 5 mm/day and the growing period of the crop is 100 days. Calculate the total water requirement of the crop for an area of 2 ha considering water application and conveyance efficiencies of 75% and 50%, respectively.

Calculate the drainage discharge in m/s to dispose the runoff generated from a catchment of 4 ha after having a 40 mm/hr rain using the rational formula. Assume a runoff coefficient of 0.5.

Write three principles of components of Integrated Water Resources Management.

The flow (in m³/s) of a stream at a section in nine consecutive years are given below:

100, 110, 90, 75, 115, 120, 105, 95, 125.

Calculate the 80% dependable flow of the stream.

Write four names of the policies, plans, or acts related to water resources management of Bangladesh.

Lubana bought a 1-year Tk 10000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?

The following perpendicular offsets were taken at 10 meters' intervals from a survey line to an irregular boundary line.

Calculate the area enclosed between the survey line, the irregular boundary line by Simpson's rule.