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. |
|---|---|---|---|
| 1 | ¼ | 3.06 | 15 |
| 1¼ | ¼ | 3.67 | 18 |
| 1½ | ¼ | 4.29 | 21 |
| 1¾ | ⅜ | 7.81 | 39 |
| 2 | ⅜ | 8.73 | 44 |
| 2¼ | ⅜ | 9.65 | 48 |
| 2½ | ½ | 14.70 | 73 |
| 2¾ | ½ | 15.93 | 80 |
| 3 | ½ | 17.15 | 86 |
The weight of a cubic foot of cast-iron being 450 lbs., and the price being five cents per lb.