Chicago : Engineering and Contracting Pub. Co. · leaf 160
. Tests showed the shaft to be blocked by oldtimber and guides, so that a cone was madeto run on an old cable guide, lowered in thecenter of the compartment with a 2-ton weight.The wood pipe was built upon this and loweredas put together. The wood pipe twisted around the centercable in a spiral, so… … Methods of Framing Shaft Timbers. They were 750 ft. long, each, and had nosupport, as the guide and lowering ropes weresoon eaten off by the water. With 600 ft.under water and 150 ft. above, the wood col-umns were nearly floating. After being water-soaked they became very heavy. The woodpipe was 10…
Buildings
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