| | |
Pressure |II_{1}|II_{3}|II_{3}|II_{3} ||II_{2}|II_{4}|II_{4}|II_{4}
per square|Earth.|Earth.|Water.|Combined.||Earth.|Earth.|Water.|Combined.
foot at | | | | || | | |
__________|______|______|______|_________||______|______|______|_________
| | | | || | | |
A | 1,485| 1,755| 1,500| 3,255 || 1,035| 1,305| 2,250| 3,555
B | 1,305| 1,485| 1,500| 2,985 || 945| 1,170| 2,250| 3,420
C | 1,125| 1,215| 1,500| 2,715 || 810| 990| 2,250| 3,240
D | 405| 405| 1,500| 1,905 || 540| 450| 2,250| 2,700
E | 405| 405| 1,625| 2,030 || 540| 450| 2,438| 2,888
F | 360| 360| 1,750| 2,110 || 540| 450| 2,626| 3,076
G | 315| 315| 1,875| 2,190 || 360| 360| 2,814| 3,174
H | 180| 225| 2,000| 2,225 || 180| 180| 3,000| 3,180
I | 90| 110| 2,175| 2,285 || 135| 135| 3,188| 3,323
__________|______|______|______|_________||______|______|______|_________

APPROXIMATE PRESSURES ON SHEETED TRENCH FACES OR WALLS

___________________________________________________________________________
| | | | || | | |
Pressure |III_{1}|III_{3}|III_{3}|III_{3}||III_{2}|III_{4}|III_{4}|III_{4}
per square|Earth. |Earth. |Water. | Total ||Earth. |Earth. |Water. | Total
foot at | | | | earth || | | | earth
| | | | and || | | | and
| | | | water.|| | | | water.
__________|_______|_______|_______|_______||_______|_______|_______|_______
| | | | || | | |
A | 575 | 510 | 100 | 610 || 1,350 | 810 | 140 | 950
B | 400 | 350 | 190 | 540 || 900 | 540 | 260 | 800
C | 200 | 175 | 280 | 455 || 450 | 270 | 380 | 650
__________|_______|_______|_______|_______||_______|_______|_______|_______
___________________________________________________________________
| | | | || | | |
Pressure |IV_{1}|IV_{3}|IV_{3}|IV_{3}||IV_{2}|IV_{4}|IV_{4}|IV_{4}
per square|Earth.|Earth.|Water.|Total ||Earth.|Earth.|Water.|Total
foot at | | | |earth || | | |earth
| | |