| Cubic ft. | Ton. | Tons. | |
|---|---|---|---|
| 90 ft. × 15 ft. × 1 ft. | = 1,350 x | 0·056 | = 75·60. |
F. The weight of water resting upon the slope per lineal foot at high tide =
| Cubic ft. | Ton. | Tons. | |
|---|---|---|---|
| 60 ft. × 10 ft. × 1 ft. | = 600 × | 0·028 | = 16·80. |
G. The weight of the water displaced by a lineal foot of the submerged portion of one slope of the embankment at high tide =
| Unsubmerged portion of one slope | Cubic ft. | Ton. | Tons. | |
|---|---|---|---|---|
| 1,350 – | (30 ft. × 5 ft. × 1 ft.) | = 1,200 × | 0·028 | = 33·60. |
H. The area of the base of the slope per lineal foot =
90 ft. × 1 ft. = 90 square ft.
I. Therefore the insistent pressure upon the surface of the ground at the base of one slope at low water, when the bed is presumed to be dry, is,
| E | |
|---|---|
| 75·60 | |
| = 0·84 of a ton per square foot. | |
| 90 | |
| H |
J. At high water it is