(i) How would you conduct a reconnaissance survey for a railway project?
(i) How would you conduct a reconnaissance survey for a railway project?
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter12: Pile Foundations
Section: Chapter Questions
Problem 12.31P: Redo Problem 12.30 assuming that the water table coincides with the top of the fill and that...
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(i) How would you conduct a reconnaissance
(ii) In a pillar and stall, or stoop and room workings, the stalls or rooms are 12 ft in width and the pillars are 40 yd square. Calculate the approximate tonnage of coal extracted from the stalls or rooms, in a seam 7 ft 9 in. in thickness, dipping 19° from the horizontal, under surface area V/2 acres in extent. Assume a yield of 125 tons per inch-acre, and deduct 3%% for loss in working.
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