118_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011

118_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011 - =...

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DF8 7. P,=O,+O,·W= I?I.O~ o./I.r - ". (''01'<,)(,')' (";,._11)= 333., "'fJ 8. Pa=P,/FS= 331.r/3 c 111.'1 k'fJ 9. What happens if GWT rises to 10 feet below soil surface? Plot new effective vertical stress and unit side shear distributions: f's = 0 1.1 )(I'HO) (~"f) ~ IOoVp,f las ("',) [o.~,) :,S"!tufd P u = as + at-w 0, = (I f, dA,) = l: T. PI 6Z, = (l: T. 6Z) p =[10'( 0+1008psf )+10·(1008+1540 P Sf)+5'(1540 Sf l ](4X1' l ( 1k ) 2 2 P 1000lb = 101.9 kips 0, = (q, A,) = q, B' q, = q N q + 0.4 By N, Ny = 78.6 from Terzaghi Be factors N q = 83 from plot (use mip ,arge) 'I
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Unformatted text preview: = 0', = 1956 psf af toe q, = &quot;&lt;' p&quot;(n), 0&quot;1&quot;) ,k)&quot;._,d (&gt;i.b) = I ,1., 3'1~' ')/I~~:-I ,~&quot;.,13 flf ~ ... JI. ... I...r 1,./(0&quot; 'I') 0, = (&quot;., '11&quot;&quot;') (')'(1'/ I') , ICOO c :: 11. II.S k.... PJ PU=QS+QI-W: IlJl,c/ 1 J6 1 /S_[11' (lfO/(I)'jS&quot;{/W_il;l.l,)]e,')l :l. b '.1 k'fJ Pa=P,/FS= :tll')/lc ~7.~kJfJ Note importance of end bearing in sands. It often dominates in sands, esp. for short piles....
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