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Basic Considerations Governing Selection of Road Alignment:
The following considerations shall be kept in view in selecting the road alignment:
Roads in Plain Areas
(a) The route should be as direct as possible.
(b) The alignment should involve least acquisition of agricultural land and property.
(c) Impact on environment (fauna, flora and drainage) should be minimal.
(d) Obstructions such as places of worship, cemetry, and burning ghat, archeological and historical monuments should be avoided.
(e) Frequent crossing of railway lines should be avoided.
(f) Avoid marshy and low-lying land.
(g) Avoid flood-prone areas.
(h) When major rivers have to be crossed, the bridge site should first be selected and the approaches suitably aligned.
Determine about the Lee-McCall system In the Lee-McCall system, high-tensile strength bars of diameter varying from 12 to 40 rnrn are used as tendons. These bars are threaded a
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Explain Situations that warrant a damage inspection? - Floods - bridges located in streams, rivers and other waterways with known or suspected scour potential. - Build-up of
Question Why is slump specified in concrete carriageway comparatively low like 30mmwhen compared with normal concrete like 75mm? Answer Slump of concrete carriageway
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