PERMFILE101415

• Permit No: M2004078
• IBM Index Class Name: Permit File
• Doc Date: 5/10/2005
• Doc Name: CDOPT Obj Ltr- Slope Stability
• From: Civil Resources LLC
• To: CDOT
• Media Type: D
• Archive: No

Factors of safety have been calculated by the
* * * * * SIMPLIFIED BISHOP METHOD
The most critical circular failure surface
is specified by 16 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 101.00 101.00
2 108.91 102.17
3 116.77 103.69
4 124.55 105.56
5 132.24 107.77
6 139.82 110.32
7 147.28 113.19
8 154.61 116.40
9 161.80 119.92
10 168.81 123.76
11 175.66 127.91
12 182.31 132.35
13 188.76 137.09
14 194.99 142.10
15 201.00 147.38
16 203.72 150.00
**** Simplified BISHOP FOS = 1.573 ****
The following is a summary of the TEN most critical surfaces
Problem Description :Maximum Section Hwy 85 Near MW3
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (8-]b)
1. 1.573 78.41 280.68 181.09 101.00 203.72 2,970E+07