FLOOD03439

• County: Statewide
• Basin: Statewide
• Title: Design of Sheet Pile Walls
• Date: 3/31/1994
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

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EM 1111).2-2504
31 Mar 94

o KENNEY (1959)
o BJERRUM AND SIMONS (1960)
6 L~D ET AL. (1977)

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AVERAGE lBJEARRUM AND SIMONS 1960)
.1 STANDARD DEVIATION IU.S, NAVY 19711

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10

20

30

70

100

40 SO 60
PLASTICITY INDEX. PI

. Figura 3-4. empirical corraletlon between friction angla and PI from trlaxla' ..... on normally coneollda"d claya

.

stress of 1 Ion per square fool using an equation of !he
form:

N' . CJIV

(3-1)

where

N' = correcled resislance

CN = correction faclor

N .. measured resislanee

Table 3-5 and Figure 3-5 swnmarize !he some mesl
commonly proposed values for CN' Whitman and Uao
(1984) devel~ !he following expression for CN:

CN . J :vo (3-2)

where effective stress due 10 overburden. 0:0, is expres-
sed in Ions per square fOOL The drained friction angle
.' can be estimaIed from N' using Figure 3-6. The

relative densily of normally consolidaled sands can be
estimaled from !he correlation obtained by Marcuson
and Bieganousky (1977):

Dr . 11.7+ O.7611222(N) + 1600
- 53(P:'> - 50(C.)2U1fl

(3-3)

where

,
p vo. = effective overburden pressure in pounds per
square inch

C." coefflcienl of uniformity (D6liD)(~

Correlations have also been proposed between \he SPT
and !he Wldrained SlJ'eIIgth of clays (see Table 3-4).
However. !hese are genera1Jy Ull/'Cliable and should be
used for very preliminary studies only and for checking
\he reasonableness of SPT and lab daIa.

c. Cone penetration test. The CPT (ASTM D 3441-
.79 (19800)) is .widely used in Europe and is gaining

3-7