Water-power; an outline of the development and application of the energy of flowing water . The entire work was laid in Portland cementsupposed to be mixed 3 to i. A cable with a clear span of1350 feet was used in the construction of this work. Theentire dam contains some 90 000 cubic yards of masonry andcost a little over $600 000. This work is described in thetechnical journals, especially the Engineering!^ Netvs.^ Figs. 59, 60, 60a, and 60b represent the dam now incourse of construction and nearly complete (January. 1899). atHolyoke, Mass., to replace the wooden dam already described. * Eng
Water-power; an outline of the development and application of the energy of flowing water . The entire work was laid in Portland cementsupposed to be mixed 3 to i. A cable with a clear span of1350 feet was used in the construction of this work. Theentire dam contains some 90 000 cubic yards of masonry andcost a little over $600 000. This work is described in thetechnical journals, especially the Engineering!^ Netvs.^ Figs. 59, 60, 60a, and 60b represent the dam now incourse of construction and nearly complete (January. 1899). atHolyoke, Mass., to replace the wooden dam already described. * Engineering News, N. Y,, vol. xxix, p. 87; also numerous articles insucceeding volumes up to the period of its destruction in April, 1900. DESCRIPTION OF SOME STONE DAMS. ^Zl Fig. 6oa shows the position of the new dam with reference tothe existing wooden dam. It will be noticed that the toe is soformed as to give an upward direction to the escaping facing of the dam, both up- and down-stream, is to be ofgranite. The specifications require the level crest of the dam, a ,4 .\ v-^. Fic. 59. and the face for 3 feet below the same, to be the down-stream face masonry all contact surfaces are to becut to lay a quarter-inch joint. The up-stream face is to be ofsplit granite cut to half-inch joints. The interior is to be ofrubble composed of stone found in the vicinity of the dam. The writer sees no reason to doubt that a safe and perma-nent dam can be built in accordance with this design. Hewill, however, offer a few comments upon some of its features. I. The masonry of the toe appears to be sunk in thenatural rock, and the stones which stand on edge or on endappear to derive their stability from their backing of naturalrock. This arrangement appears to assume what cannot berealized. The toe-stones neccssarilv lie all at the same level. 134 DAMS OF MASONRY.
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