Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 843
/6A23 ■x.r z 6 yss 3X^^ 36A63 4X6 6X9 66X83 6X76 46X69 790 APPENDIX. FOUL AND SLIGHTLY TUBERCULATED IRON ; CEMENT AND TERRA COTTA PIPES WITHIMPERFECT JOINTS, AND IN BAD ORDER ; WELL-DRESSED STONEWORK AND SECONDCLASS BRICKWORK. Grades /r? feet per hundred n^.0/6 .0?.mm ./ . ■? -3 -^ .6 .6 .7.8.9/.0… … sexSjT 6X9 S6X83 6X76 46X6a APPENDIX. 791 For tables of the Kutter formula see Irrigation Canals, by P. J. Flynn, C. E. It will be observed that n depends on the condition of the wetted surface, and thatwith iron surfaces it must vary largely with the time exposure of these surfaces and…
Mechanical drawing
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