2017-02-21_REVISION - M1988112 ‎(2)‎

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 2/21/2017
• Doc Name: Request for Technical Revision
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Type & Sequence: TR34
• Email Name: WHE
• Media Type: D
• Archive: No

Use menu item Settings > Printing & Title Block Title San Luis Drop Structure Page: 5 of 6
to set these five lines of information Job # 11061:7 Dsgnr: LCB Date: 18 DEC 2015
for your program. Description....
Channel Wall
This Wall in File: P:\110617 San Luis Tailings Impoundment Drop Structure\2.0 Engineering Analytics
RetainPro (c) 1987-2015, Build 11.15.4.22
License: KW -06060875
Cantilevered Retaining Wall Design Code: IBC 2012,AC1318-11,ACI530-11
License To : Engineering Analytics
.....OVERTURNING..... .....RESISTING.....
Force Distance Moment Force Distance
Moment
Footing Dimensions & Strengths
Footing Design Results
Heel Active Pressure = 1,373.1 2.17 2,975.1 Soil Over Heel = 214.5 16.15
Toe Width =
15.00 ft
I9g
i1221
Heel Width =
1.30
Factored Pressure
= 135
411 psf
Total Footing Width =
16.30
Mu': Upward
= 24,702
26 ft-#
Footing Thickness =
12.00 in
Mu': Downward
= 20,250
56 ft-#
19,926.8
Resisting/Overturning Ratio = 9.12 Key Weight =
Mu: Design
= 4,452
30 ft-#
Key Width =
0.00 in
Actual 1 -Way Shear
= 10.63
2.21 psi
Key Depth =
0.00 in
Allow 1 -Way Shear
= 75.00
75.00 psi
Key Distance from Toe =
0.00 ft
Toe Reinforcing
= # 5 @ 13.25 in
fc = 2,500 psi Fy =
60,000 psi
Heel Reinforcing
= # 5 @ 12.00 in
Soil Spring Reaction Modulus 250.0 pci
Footing Concrete Density =
150.00 pcf
Key Reinforcing
= None Spec'd
Min. As % = 0.0018 Other Acceptable Sizes & Spacings
Cover @ Top 2.00 @ Btm: 3.00 in
Toe: #4@ 9.26 in, #5@ 14.35 in, #6@ 20.37 in, #7@ 27.78 in, #8@ 36.57 in, #9@ 46
Heel: Not req'd: Mu < phi*5*lambda*sgrt(fc)*Sm
Key: No key defined
Summary of Overturning & Resisting Forces & Moments
.....OVERTURNING..... .....RESISTING.....
Force Distance Moment Force Distance
Moment
Item lbs ft ft-# lbs ft
ft-#
Heel Active Pressure = 1,373.1 2.17 2,975.1 Soil Over Heel = 214.5 16.15
3,464.2
Surcharge over Heel = 422.5 3.25 1,373.1 Sloped Soil Over Heel =
Surcharge Over Toe = Surcharge Over Heel = 39.0 16.15
629.9
Adjacent Footing Load = Adjacent Footing Load =
Added Lateral Load = Axial Dead Load on Stem =
Load @ Stem Above Soil = * Axial Live Load on Stem =
= Soil Over Toe =
Surcharge Over Toe =
Total 1,795.6 O.T.M. 4,348.2 Stem Weight(s) = 1,007.5 15.50
15,616.3
Earth @ Stem Transitions=
_ = Footing Weight = 2,445.0 8.15
19,926.8
Resisting/Overturning Ratio = 9.12 Key Weight =
Vertical Loads used for Soil Pressure = 3,706.0 lbs Vert. Component =
Total = 3,706.0 lbs R.M.=
39,637.0
* Axial live load NOT included in total displayed, or used for overturning
resistance, but is included for soil pressure calculation.
Vertical component of active lateral soil pressure IS NOT considered in
the calculation of Sliding Resistance.
Vertical component of active lateral soil pressure IS NOT considered in
the calculation of Overturning Resistance.
Tilt
Horizontal Deflection at Top of Wall due to settlement of soil
(Deflection due to wall bending not considered)
Soil Spring Reaction Modulus 250.0 pci
Horizontal Defl @ Top of Wall (approximate only) 0.010 in
The above calculation is not valid if the heel soil bearing pressure exceeds that of the toe
because the wall would then tend to rotate into the retained soil