Aquaculture Engineering (2+1)

Practical - 11
Experiment No 1 - Earth work calculation for channel making

Aim:
Computation of volume of earth work in the channels.

Problems:
1. Compute the depth of cut and height of bank at the various sections along the given line from the following data and draw the longitudinal section.

2. Calculate the quantity of earth work for 200 m. length channel in uniform ground with height of banks at the two ends being 1.0 m and 1.6 m. The formation width is 5 m, side slope is 2:1 (H: V). Assume that there is no transverse slope.
Use (i) Mid-sectional area method
(ii) Mean sectional area method.

3. Compute the volume of earth work along the given line from the following data

Assume the following
Formation width = 10 m.
Side slope = 2:1
Use

• Mid sectional area method
• Trapezoidal formula method
• Prismoidal formula method

4. Compute the volume of earth work from the following data

Formation width = 10 m
Side slope

• Embankment = 2:1
• Excavation = 1.5:1

Use

• Mid sectional area method
• Mean sectional area method