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

•
•

Vertical Pressure Equations
Project # 073-81745
Date: 1/10/08
BY: KFM
Project Description: Evaluate the depth of overliner required to protect geomembrane liner from stress inflicted by a Caterpillar Model 950H Wheel Loader. From the
published 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
per 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., at one
tire) of approximately 14,800 lb. Use a maximum allowable vertical stress of up to 8 psi on the liner is acceptable
Boussinesq Method
Input Parameters
Associates
Add stress caused by second front wheel
Use of 2.5 feet of cushion layer cover is recommended.
Point Load lbs): 14800 14800 1 800 14800 14800 14800 14800 14800 14800 14800
Distance from Load ft): 0 0 0 0 0 0 0 0 0
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): 1766.6 111130-6 785.2 576.9 441.7 349.0 282.7 233.6 196.3 167.3
(psi) 12.3 7.9 5.5 4.0 3.1 2.4 2.0 1.6 1.4 1.2
Horizontal Stress due to Load
(Psfl:
(radially from load pt)

_147,2

-94.2

-65.4

48.1

-36.8

-29.1

-23.6

-19.5

-16.4

-13.9
(psi) -1.0 -0.7 -0.5 -0.3 -0.3 -0.2 -0.2 -0.1 -0.1 -0.1
Horizontal Stress due to Load
(Psi):
(tangential from load pt)

_147 2

_94.2

-65.4

-48.1

-36.8

-29.1

-23.6

-19.5

16.4

13.9
63si) -1.0 -0.7 -0.5 -0.3 -0.3 -0.2 =0.2 -0.1 -0.1 -0.1
Shear Stress due to Load (psf): 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
(psi) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Vertical Soil Stress (psf) 210.0 262.5 315.0 367.5 420.0 472.5 525.0 577.5 630.0 682.5
(psi) 1.5 1.8 2.2 2.6 2.9 3.3 3.6 4.0 4.4 4.7
Horizontal Soil Stress (psf): 105.0 131.3 157.5 183.8 210.0 236.3 262.5 288.8 315.0 341.3
(psi) 0.7 0.9 1.1 1.3 1.5 1.6 1.8 2.0 2.2 2.4
Total Major Principal Stress (psf): 1976.6 111393.1 1100.2 944.4 861.7 821.5 807.7 811.1 826.3 849.8
(psi) 13.7 it 9.7 7.6 6.6 6.0 5.7 5.6 5.6 5.7 5.9
Total Minor Principal Stress (psi): -42.2 37.0 92.1 135.7 173.2 207.2 238.9 269.3 298.6 327.3
(psi) -0.3 0.3 0.6 0.9 1.2 1.4 1.7 1.9 2.1 2.3
P Parameter(psi) 6.7 5.0 4.1 3.8 3.6 3.6 3.6 3.8 3.9 4.1
Parameter (psi) 7.0 4.7 3.5 2.8 2.4 2.1 2.0 1.9 1.8 1.8
Buffer Thickness Calc.xls
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073-81745