The velocity will be

1000 × 144
62 × 0.7854 = 5093 feet per hour,

or eighty-five feet per minute. The weight of a column of water fifty feet high and six inches in diameter is

62 × 0.7854 × 50 × 12
1728 × 62½ = 613.6 lbs.

Also,

612½ × 83
33000 = 1½ horse-power nearly.

395. Among the pumps now in use for raising water at railroad stations are Carpenter’s rotary, Worthington’s, McGowan’s, and that of Messrs. Perkins and Bishop, either of which answers every purpose.

396. TABLE SHOWING THE WEIGHT AND COST PER FOOT OF CAST-IRON PIPE.

Diameter of bore.
Inches.
Thickness of metal.
Inches.
Weight of pipe per lineal foot.
Lbs.
Cost of pipe per lineal foot.
Cents.
1¼3.0615
¼3.6718
¼4.2921
7.8139
28.7344
9.6548
½14.7073
½15.9380
3½17.1586

The weight of a cubic foot of cast-iron being 450 lbs., and the price being five cents per lb.