Job Solution | পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা

পানি সম্পদ পরিকল্পনা সংস্থা || সহকারী প্রকৌশলী (01-09-2023) || 2023

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টেকনিক্যাল

Find the loads (concentrated, distributed and bending moments) of the beam section using the following Shear Force Diagram (SFD) and Bending Moment Diagram (BMD)

Draw the qualitative stress-strain diagram of mild steel showing all its components.

Write the clear covers of the following structural elements considering BNBC 2020:

Beam

Write the clear covers of the following structural elements considering BNBC 2020:

Column

Write the clear covers of the following structural elements considering BNBC 2020:

Footing

Write the clear covers of the following structural elements considering BNBC 2020:

Retaining wall

Write the names of six laboratory tests to assess the quality of bituminous materials.

Draw contours with arbitrary values for a pond and a hill.

The areas enclosed by the contours in a lake are as follows:

Contour (m)	270	275	280	285	290
Area (m²)	2050	8400	16300	24600	31500

Calculate the volume of water between the contours 270m and 290m using the Prismoidal formula.

Draw qualitative Dissolved Oxygen variation curve in a flowing water body from a particular source of pollution.১৮

Elaborate the following abbreviated terms:

FEWC

Elaborate the following abbreviated terms:

SPARRSO

Bangladesh Space Research and Remote Sensing Organization

Elaborate the following abbreviated terms:

RRI

Elaborate the following abbreviated terms:

STP

Elaborate the following abbreviated terms:

BRT

Elaborate the following abbreviated terms:

IPCC

Write four major problems of using groundwater as a source of water supply in Bangladesh.

Write three major causes of riverbank failures in Bangladesh.

Write the expressing unit of the following parameters:

Salinity

Write the expressing unit of the following parameters:

Turbidity

Write the expressing unit of the following parameters:

Hardness

Write the expressing unit of the following parameters:

TDS

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.

The rational formula is used to estimate the peak discharge of a storm runoff.

It is given by the equation:

Q = 0.0028 CIA

where:

Q is the peak discharge (m^3/s)
C is the runoff coefficient (dimensionless)
I is the rainfall intensity (mm/hr)

the runoff coefficient is 0.5, the rainfall intensity is 40 mm/hr, and the drainage area is 4 ha. The peak discharge is then:

Q = (0.0028)(0.5)(40 mm/hr)(4 ha) = 0.224 m^3/s

Therefore, the drainage discharge required to dispose the runoff generated from the catchment is 0.224 m^3/s.

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.

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