Sundry Civil Appropriation Bill, 1922; Hearing[s] Before Subcommittee of House Committee on Appropriations in Charge of the Sundry Civil Appropriation Bill for 1922. Sixty-Sixth Congress, Third Session Volume 2

Sundry Civil Appropriation Bill, 1922; Hearing[s] Before Subcommittee of House Committee on Appropriations in Charge of the Sundry Civil Appropriation Bill for 1922. Sixty-Sixth Congress, Third Session Volume 2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... Goodwin. Yes; we have entered into a contract. The Chairman. If you build the suspension bridge, what will be the construction? Mr. Goodwin. That is a suspension bridge which will havt-to be.specially strong, with a high-grade main supporting cable. An ordinary cable; that is, one cable such as is ordinarily used in the ordinary suspension bridge would require 16 mules to carry it from the rim down there, through hundreds of switchbacks, going down like this indicating, and in order to reduce that to the minimum we will get a high-grade steel cable, such as is used in the hardest kind of mine work, which will reduce the load about 300 per cent, and it will only require four mules to take it down. Mr. Mather. That is quite an interesting feature. You have the cable loaded partly on each mule and it requires very good team work to get it down. This will reduce the number of animals required to carry the load. Mr. Goodwin. In that bridge we have worked with the thought in view of reducing the difficulty of getting the stuff from the rim down to the site. The Chairman. What will be the distance between the bridge and the canyon? Mr. Goodwin. It will be 40 feet above, with a 500-foot span. It will look like a cobweb when actually seen. The Chairman. Will the structure be of steel? Mr. Goodwin. No; wood. An oak beam and oak flooring plank. There will be hangers every 6 feet on each side, coining down to a 3-foot interval, possibly;" feet wide, with a wire cable on each side to keep the animals from getting off. and they go through a sort of passageway. There will be space sufficient for 10 mules, but that is the ultimate limit. That is something that will have to be taken into account. We expect to have not more than one rnule at a time because there...show more

Product details

  • Paperback | 836 pages
  • 189 x 246 x 42mm | 1,461g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236669347
  • 9781236669346