Module 6 : Design of Retaining Structures
Lecture 29 : Braced cuts [ Section 29.5 : Stability checks for designing a braced excavation: ]
   
  Table 2
 
Case 1 ( sand upto infinite depth)
 
B / H
F.O.S = 1.5
F.O.S = 2.0
d / H
d / H

Loose sand

Dense sand

Loose sand

Dense sand

0.5

1.2

1.05

1.75

1.7

1.0

1.1

0.85

1.50

1.3

2.0

0.9

0.65

1.20

0.9

3.0

0.8

0.50

1.05

0.75

4.0

0.75

0.50

1.04

1.07

 
Case 2 ( sand upto finite depth)
 

B / H

F.O.S = 1.5

F.O.S = 2.0

d / H
d / H
/ H=1
/ H=2
/ H=1
/ H=2

0.5

0.70

1.10

0.80

1.50

1.0

0.55

0.80

0.75

1.10

2.0

0.40

0.65

0.50

0.45

3.0

0.35

0.45

0.50

0.55

4.0

0.35

0.45

0.50

0.55

 
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