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টেকনিক্যাল

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

FEWC

SPARRSO

RRI

STP

BRT

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.

Salinity

Turbidity

Hardness

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?

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