[45]. “Direct Acting Steam Pumps,” by F. R. Nickel, 1915.
[46]. From Heat Engines, by Allen and Bursley.
[47]. “The Economy Resulting from the Use of Variable Speed Induction Motors for Driving Centrifugal Pumps” by M. L. Enger and W. J. Putnam. Journal Am. Water Works Ass’n., 1920, Vol. 7, p. 536.
[48]. C. A. Hague in Trans. Am. Society of Civil Engineers, Vol. 74, 1911, p. 20.
[49]. Includes screen chamber, collecting reservoir, and building.
[50]. Computed on the assumption that the pumps may be operated at 50 per cent overload for short periods, the rated capacity being equal to the loads given in Table 33.
[51]. For description of type see note under Table 35.
[52]. Proceedings Illinois Society of Engineers, 1916, page 81.
[53]. Municipal Engineers’ Journal for April, 1918.
[54]. Workability involves ease in placing and smoothness of working.