Shapes of Tunnels Commonly used tunnel shapes(Shapes of Tunnels) are discussed below: 1. Polycentric Shaped of Tunnels This sort of tunnel shape has a number of centers and provides a sufficient flat base for traffic movement. Advantages: Disadvantages: 2. Circular Shaped Tunnels Circular tunnels are used to carry water under pressure. These are not appropriate…
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20 Types of Classification of Tunnels Tunnels are generally classified on the basis of their purposes, types of material, and according to their position: A. Classification Based on The Purpose Based on purpose tunnels are classified as: a. Traffic Tunnels Traffic tunnels are of the following types: b. Conveyance Tunnels Conveyance tunnels are of…
Necessity of Tunnels The necessity of tunnels are as follows: 1. Tunnels are necessary, to avoid the long road and railway track construction along the surface of the hill to reach out the other side of the hill. 2. Tunnels are constructed for connecting the two terminal stations, which separated by a mountain. 3. To avoid…
