Civil and Environmental Engineering Answers

A cylinder with high rigidity, diameter inside it is 25 mm containing a column of water 650 mm

long. Calculate the column length if a force of 2.5 kN is applied to its end by a frictionless plunger?

Assume there is no leakage.

Discuss the relevance of irrigation to agricultural development.

Distinguish between the categories of irrigation.

Enumerate the requirements for setting up an irrigation system.

Discuss the differences between furrow and flood irrigation.

A hollow cast iron cylinder, 4m long 30mm outer diameter and the thickness of 50mm. Is subjected to a central load on the top when standing straight. The stress produced is 750KN/m^2, assume Young's modulus of cast iron = 1.5×10^8KN/m. Find

1. Magnitude of the load

2. Longitudinal strain produced

3. The total decrease in length

A straight bar of uniform cross section is subject to an axial tension, the cross sectional area of the bar is 50mm^2 and it's length is 2mm under a load of 40kN. Find the modulus of elasticity

A straight aluminum wire 30m Long is subject to a tensile stress of 70MPa.

1. Determine the total elongation of the wire.

2. What temperature change would produce the same elongation

Take: Elastic modulus = 200GNM^-2 And temperature coefficient = 25 × 10^-6

How do you calculate the 2nd area movement (Iy,Iz) for a segment of a circle with a freely chosen angle? (z-axis is a symmetry axis)

A body of weight W = 120N is pushed by a horizontal for P = t2 + 6. A frictional force f= t3- 5 resists

its motion. If the body starts from rest, find the velocity of the body after 3 seconds.