2008-07-11_PERMIT FILE - M2007044 ‎(7)‎

• Permit No: M2007044
• IBM Index Class Name: PERMIT FILE
• Doc Date: 7/11/2008
• Doc Name: Appendix J, K, and L ‎(volume 2)‎
• From: Energy Fuels Resources Corp
• To: DRMS
• Email Name: GRM
• Media Type: D
• Archive: No

•
11
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Vertical Pressure Equations
PmJect # 073-81745
Date: 1/10/08
Ject Description: Evaluate the depth of overliner required to protect geomembrane liner from stress inflicted by a Caterpillar Model 950H Wheel Loader. From the
fished specifications, the operating weight is 40,435 lb. The maximum bucket capacity is provided as 4.5 cubic yards. Assuming a unit material weight of 110 pounds
cubic foot, the gross loaded weight is approximately 53,800 lb. Assume that 55% of the weight is supported by the front axle (29590 lbs) with a point load (i.e., atone
I of approximately 14,800 lb. Use a maximum allowable vertical stress of up to 8 psi on the liner is acceptable
Boussinesq Method
lnnut Parameters
Stress caused by second front wheel.
Assockates
Point Load Ibs): 14800 14800 1 800 14800 14800 14800 14800 14800 14800 14800
Distance from Load(ft): 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5
Depth of Interest (ft): 2 .5 3 3.5 4 4.5 5 5.5 6 6.5
Cale. Values
Vertical Stress due to Load (psf): 0.7 II 2 1.9 2.8 3.9 5.0 6.2 7.4 8.5 9.6
(psi) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1
Horizontal Stress due to Load (psf):
(radially from load pt)
4.4
7.7
10.4
12.4
13.9
14.9
15.4
15.5
15.3
14.8
(psi) 0.0 I 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 01
Horizontal Stress due to Load (psf):
(tangential from load pt)

7.8

i 6.6

5.5

4.6

3.7

2.9

2.2

1.6

1.1

0.7
( si) 0.1 l 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Shear Stress due to Load (psf): 3.1 4.6 6.2 7.7 9.2 10.6 11.8 12.7 13.5 14.0
(psi) 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Vertical Soil Stress (psf) 210.0 11262.5 315.0 367.5 420.0 472.5 525.0 577.5 630.0 682.5
(psi) 1.5 II 1.8 2.2 2.6 2.9 3.3 3.6 4.0 4.4 4.7
Horizontal Soil Stress (psf): 105.0 1131.3 157.5 183.8 210.0 236.3 262.5 288.8 315.0 3417
(psi) 0.7 II 0.9 1.1 1.3 1.5 1.6 1.8 2.0 2.2 2.4
Total Major Principal Stress (psf): 210.7 11 263.7 316.9 370.3 423.9 477.5 5312 584.9 638.5 692.1
(psi) 1.5 J 1.8 2.2 2.6 2.9 3.3 3.7 4.1 4.4 4.8
Total Minor Principal Stress (psf): 109.4 111139.0 167.9 196.2 223.9 251.1 277.9 304.2 330.3 356.1
(psi) 0.8 l 1.0 1.2 1.4 1.6 1.7 1.9 2.1 2.3 2.5
P Parameter (psi) 1.1 1.4 1.7 2.0 22 2.5 2.8 3.1 3.4 3.6
Parameter (psi) 0.4 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
Buffer Thickness Cak .xis
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