Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 194
position of railroad tracks. Answers to the above questions, together with such other sug-gestions and directions as may be offered by a prospective cus-tomer, will facilitate very much the preparation of plans and theselection of appropriate machinery for the plant. DERRICKS LIGHT DITCH DERRICK… … Fig. 76. TRIPOD DERRICK OP PIPE AND DROP FORGED FITTINGS Size ofNo. pipe legs Weight Safe capacity Price 1 1 x 7 38 lbs. 1000 lbs $ 3.75 2 1 x 8% 45 lbs. 1000 lbs 4.10 3 l^xl0 88 lbs. 2000 lbs 6.75 4 1 %xl2 100 lbs. 2000 lbs 7.50 5 2 xl2 145 lbs. 3000 lbs 10.50 6 2 xl4 165 lbs. 3000 lbs 11.50 Sulky…
Contractors' operations · Building
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