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Unformatted text preview: h A ≈ ~ 10 m – (3.25 1.25 m) 5.94 m The point A is about 24.5 m below the datum for the measurement of head, giving u A = γ w .(24.5 + 5.94) 300 kPa (see main text Section 3.10 and Example 3.7 for details of the calculation of pore water pressures from flownets). The upward hydraulic gradient between the sheet piles is (scaling from the flownet) approximately 1.25 m ÷ 3 m or 0.42, which is comfortably below the critical value of about 1. Thus our dewatering scheme, which involves installing pumped wells with sufficient capacity to draw down the groundwater level within the excavation to formation level, should be adequate to ensure the stability of the base....
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This note was uploaded on 12/28/2011 for the course CHM 4302 taught by Professor Stuartchalk during the Fall '11 term at UNF.
- Fall '11
- Analytical Chemistry