+14.3 ft Existing Curb wall Sand fill $' = 30° +1 ft y = 110 lb/ft³ Strut Elevation Load measured level (ft) Stiff clay (kip/ft) -3ft B Soft silty clay + = 0 C c = 400 lb/ft² y = 127 lb/ft³ ABCDE +3 16.0 -6 26.5 -15 29.0 -24.5 29.0 -34 29.0 F <-44.5 30.7 Subway D Σ160.2 E F -56 ft -43 ft -32 ft Medium silty clay =0 c=700 lb/ft², y 130 lb/ft³ Tough silty clay --49 ft MZ 38 Sheet piling =0, c = 2000 lb/ft², y= 135 lb/ft Very tough silty clay 6 = 0 c = 4000 lb/ft² -62 ft -64 ft y = 135 lb/ft³ For the braced cut shown below (a) draw the Rankine earth pressure diagram and calculate the resultant force on the wall. (b) factor and redistribute according to Terzaghi and Peck's recommendations; (c) estimate the strut loads (kip/ft) from your envelope; and (d) compare to the measured strut loads given. Hardpan
+14.3 ft Existing Curb wall Sand fill $' = 30° +1 ft y = 110 lb/ft³ Strut Elevation Load measured level (ft) Stiff clay (kip/ft) -3ft B Soft silty clay + = 0 C c = 400 lb/ft² y = 127 lb/ft³ ABCDE +3 16.0 -6 26.5 -15 29.0 -24.5 29.0 -34 29.0 F <-44.5 30.7 Subway D Σ160.2 E F -56 ft -43 ft -32 ft Medium silty clay =0 c=700 lb/ft², y 130 lb/ft³ Tough silty clay --49 ft MZ 38 Sheet piling =0, c = 2000 lb/ft², y= 135 lb/ft Very tough silty clay 6 = 0 c = 4000 lb/ft² -62 ft -64 ft y = 135 lb/ft³ For the braced cut shown below (a) draw the Rankine earth pressure diagram and calculate the resultant force on the wall. (b) factor and redistribute according to Terzaghi and Peck's recommendations; (c) estimate the strut loads (kip/ft) from your envelope; and (d) compare to the measured strut loads given. Hardpan
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:+14.3 ft
Existing
Curb wall
Sand fill
$' = 30°
+1 ft
y = 110 lb/ft³
Strut
Elevation
Load measured
level
(ft)
Stiff clay
(kip/ft)
-3ft
B
Soft silty clay
+ = 0
C
c = 400 lb/ft²
y = 127 lb/ft³
ABCDE
+3
16.0
-6
26.5
-15
29.0
-24.5
29.0
-34
29.0
F
<-44.5
30.7
Subway
D
Σ160.2
E
F
-56 ft
-43 ft
-32 ft
Medium silty clay
=0
c=700 lb/ft², y 130 lb/ft³
Tough silty clay
--49 ft
MZ 38
Sheet piling
=0, c = 2000 lb/ft², y= 135 lb/ft
Very tough silty clay
6 = 0
c = 4000 lb/ft²
-62 ft
-64 ft
y = 135 lb/ft³
For the braced cut shown below (a) draw
the Rankine earth pressure diagram and
calculate the resultant force on the wall. (b)
factor and redistribute according to
Terzaghi and Peck's recommendations; (c)
estimate the strut loads (kip/ft) from your
envelope; and (d) compare to the measured
strut loads given.
Hardpan
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