Question

Question: Hindi
At Prop free front face the roof support is provided by
Option 1:
Hydraulic chock
Option 2:
Cantilever bar
Option 3:
Triangular chocks
Option 4:
Steel prop
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Answer 1

Answer:

option (2) is the correct answer

Answer 2

The correct answer is option (2) Cantilever bar.

Explanation:

• At Prop free front face the roof support is provided by Cantilever bar. Cantilever Bar Specialists are World Leaders in bar design.
• We design and build bars across the World for many of the industry's top hotels, restaurants, bars, cafés and clubs."
• In coal mining, longwall working in which support to the roof is given by roof beams cantilevered from behind the working face.