171

a—3

TABLE OF USEFUL CALCULATIONS FOR PIPES. Hydraulic Mean Depth in Inches and Feet, Area in Square Inches and Square Feet, of Pipes from 6in. to 36in. in Diameter; and Velocities of Water in Pipes from 6in. to 36in. in Diameter when carrying from One to Fifteen Sluice-heads of Water. (One sluice-head =one cubic foot per second.)

Diameter. Hydraulic Mean Depth. Area. Velocity, in Feet. In. Ft. In. Ft. Sq. In. Sq. Ft. One Head. Two Heads. Three Heads. Four Five Six Seven Eight Nine Ten Eleven Twelve j Thirteen Fourteen Heads. Heads. Heads. Heads. Heads. Heads. Heads. Heads. Heads. : Heads. Heads. Fifteen Heads. 6 7 8 9 10 11 12 13 14 15 16 17 18 20 22 24 26 28 30 32 34 36 1-50 1-75 2-00 2-25 2-50 2-75 300 3-25 3-50 3-75 4-00 4-25 4-50 5-00 5-50 6-00 6-50 7-00 7-50 8-00 8-50 900 0-12500 0-14583 016666 0-18750 0-20833 0-22917 0-25000 0-27083 1 0-29167! 0-31250 0-33333 0-35416 0-37500| 0-41667; 0-45833: 0-50000 0-54167 0-58333 1 0-62500 0-66666 0-70833 0-75000 28-27 38-48 50-26! 63-61 ; 78-54; 95-03! 113-09! ! 132-731 153-93 ! 176-71 201-06! 226-98 254-46J 314-16! ! 380-13! : 452-39: 530-93! 615-75 1 706-86! 804-24! 907-92 1017-87! 0-1963 0-2672 0-3491 0-4418 0-5454 0-6599 0-7854 0-9217 1-0689 1-2272 1-3962' 1-5762 1-7671 2-1816 2-6398 3-1416 3-6870 4-2760 4-9087 5-5851 6-3050 7-0685 5-0942 3-7425 2-8645 2-2635 1-8335 1-5153 1-2732 1-0849 0-93554 0-81486 [0- 71623 0- 63443 10-56589 0-45837 0-37881 0-31831 0-27122 0-23386 0-20371 0-17904 0-15860 0-14147 10-1884 7-4850 5-7290 4-5270 3-6670 3-0306 2-5464 2-1698 1-8710 1-6297 1-4324 1-2688 1-1317 0-91674 0-75762 0-63662 0-54244 0-46772 0-40742 0-35808 0-31720 0-28294 15-2826 11-2275 8-5935 6-7905 5-5005 4-5459 3-8196 3-2547 2-8066 2-4445 2-1486 1-9033 1-6976 1-3751 1-1364 0-95493 0-81366 0-70158 0-61113 0-53712 0-47580 0-42441 20-3768 14-970 11-458 9-0540 7-3340 6-0612 5-0928 4-3396 3-7421 3-2594 2-8649 2-5377 2-2635 1-8334 1-5152 1-2732 1-0848 093544 0-81484 0-71616 0-63440 0-56588 25-4710 18-712 14-322 11-317 9-1675 7-5765 6-3660 5-4245 4-6776 4-0743 3-5811 3-1721 2-8294 2-2918 1-8940 1-5915 1-3561 1-1693 1-0185 0-89520 0-79300 0-70735 30-5652 22-455 17-187 13-581 11001 9 0918 7-6392 6-5094 5-6131 4-8891 4-2973 3-8066 3-3953 2-7502 2-2728 1-9098 1-6273 1-4031 1-2222 1-0742 0-95160 0-84882 35-6594 26-197 20-051 15-844 12-834 10-607 8-9124 7-5946 6-5486 5-7040 5-0136 4-4410 3-9612 3-2085 2-6516 2-2281 1-8985 1-6370 1-4259 1-2532 1-1102 0-99029 40-7536 29-940 22-916 18-108 14-668 12-122 10-185 8-6792 7-4842 6-5188 5-7298 5-0754 4-5271 3-6669 3-0304 2-5464 2-1697 1-8708 1-6296 1-4323 1-2688 1-1317 !45-8478 !33-682 25-780 20-371 16-501 13-637 11-459 9-7641 8-4197 7-3337 6-4460 5-7099 5-0930 4-1253 3-4092 2-8647 2-4409 2-1047 1-8333 1-6113 1-4274 1-2732 50-9420 37-425 28-645 22-635 18-335 15153 12-732 10-849 9-3553 8-1486 7-1623 6-3443 5-6589 4-5837 3-7881 3-1831 2-7122 2-3386 2-0371 1-7904 1-5860 1-4147 56-0362 41-167 31-509 24-898 20-168 16-668 14-005 11-933 10-290 8-9634 7-8785 6-9788 6-2247 5-0420 4-1669 3-5014 2-9834 2-5724 2-2408 1-9694 1-7446 1-5561 61-1304 44-910 34-374 27-162 22-002 18-183 15-278 13-018 11-226 9-7783 8-5947 7-6132 6-7906 5-5004 4-5457 3-8197 3-2546 2-8063 2-4445 2-1484 1-9032 1-6976 66-2246 48-652 37-238 29-425 23-835 19-698 16-551 14-103 12-161 10-593 9-3109 8-2476 7-3565 5-9588 4-9245 4-1380 3-5258 3-0401 2-6482 2-3275 2-0618 1-8391 71-3188 52-395 40-103 31-689 25-669 21-214 17-825 15-189 13-097 11-408 10-027 8-8821 7-9224 6-4171 5-3033 4-4563 3-7970 3-2740 2-8519 2-5065 2-2204 1-9806 76.413 56-138 42-967 33-951 27-502 22-730 19098 16-274 14-033 12-222 10-743 9-516i 8-488' 6-8751 5-682: 4-7741 4-0681 3-507! 3055' 2-685' 2-379! 2-122: