Find the magnitude of active pressure σ ′ a at the bottom of the wall.

Question

1) Determine if the existing sedimentation basins are sufficient to accommodate the projected future capacity. If not, design upgrades to the sedimentation basins. A) Current Capacity: 22.5 MGD B) Future Capacity: 34.5 MGD for 110,000 residents C) If not, design upgrades to the sedimentation basins. 2) Specify the design flow rate, the type of basin (circular vs. rectangular) 3) Specify the basin dimensions (length, width, water depth or diameter and water depth). 4) Specify the dimensions of the launders (if applicable) and the length of the weir.

Answer 1

Question

Chapter 13, Problem 13.21P

(a)

To determine

Find the magnitude of active pressure σ′a at the bottom of the wall.

(b)

To determine

Find the Rankine active force Pa per unit length of the wall and its location and direction.

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