Hamilton [22] reports results of measurements made to determine entrance losses for flow from a reservoir to a pipe with various degrees of entrance rounding. A copper pipe 10 ft long, with 1.5 in. i.d., was used for the tests. The pipe discharged to atmosphere.

For a square-edged entrance, a discharge of 0 566 ft3 s was measured when the reservoir level was 85.1 ft above the pipe centerline.

From these data, evaluate the loss coefficient for a square-edged entrance.