| Cubic ft. | Ton. | Tons. | |
| 30 ft. × 10 ft. × 1 ft. = | 300 × | 0·056 | = 16·80 |
The submerged portion =
30 ft. × 20 ft. × 1 ft. = 600 × 0·028 = 16·80
33·60
| 33·60 | ||
| Consequently the pressure = | = 1·12 ton per square foot; | |
| 30 | ||
| K |
also a difference of 0·56 ton per square foot, or 33 per cent. less load.
The difference in weight, assuming a wave of 5 feet in height, measured downwards from high water level, to simultaneously roll against the embankment upon both slopes and completely recoil, would be equivalent to the displacement of 5 feet depth of water for a strip =
| (30 ft. + 30 ft. + 30 ft.) + (45 ft. + 30 ft. + 45 ft.) | |
| = 105 ft. in width. | |
| 2 |
The cubic contents per lineal foot are—
105 ft. × 1 ft. × 5 feet = 525 cubic ft.
O. The flotation power =