Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 457
kely to decay or rot when exposed to the air. In con-struction it consists of a mass of masonry laid dry, with a nearly vertical up-stream face pinned and pointed with cement mortar and again faced with aconcrete or cement wall in close connection with the wall face and mortarbonded with it. The… … Fig.1044. the dam by cutting af[ seams in the rock foundations and to the stanchnessof the cement wall. Fig. 1044 is a section of the dam across the Connecticut Eiver, at Holyoke,Mass. This dam is 1,017 feet long between abutments, averages 30 feet highby a base of 80 feet and is constructed of…
Mechanical drawing
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