Answer Posted / abir kumar ghosh

30-40 means bitumen having penetration of needle (with
standard weight)between 30-40 mm in 5 seconds at 25 deg
cent.
The test done with a apratus called Vicats apparatus.

Doul Bar reinforcement and details of drawing.

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What is the substitute of Mastic Asphalt?

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666

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Define What is the meaning of a blue land surveyors flag?

753

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Why nautical mile is different from statute mile?

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Sir, Iam Applied in rrb for the posts of Junior Engineer.I want to know about the or question previews to study well.Pl send it to shukla_varun1985@yahoo.com.

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sir, whitch is the best book (writer name) for prepration of gate....

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