Download - Keystone

DESIGN MANUAL& KEYWALL OPERATING GUIDECRANKINE METHODOLOGY LEVEL SURCHARGE - 250 PSFRETAINING WALL DESIGNKeyWall_2010 Version 3.7.1 Build 1P r o j e c t : Part 6; Design Examples D a t e : 8/31/2010Project No: NAD e s i g n e r : JLGC a s e : Appendix CDesign Method: Rankine-w/Batter (modified soil interface)Design ParametersSoil Parameters: φ c p s f γ p c fReinforced Fill 34 0 120Retained Zone 30 0 120Foundation Soil 30 0 120Reinforced Fill Type: Sand, Silt or ClayUnit Fill:Crushed Stone, 1 inch minusMinimum Design Factors of Safetysliding: 1.50 pullout: 1.50 uncertainties: 1.50overturning: 2.00 shear: 1.50 connection: 1.50bearing: 2.00 bending: 1.50Reinforcing Parameters: Strata-Grid GeogridsTult RFcr RFd RFid LTDS FS Tal Ci CdsSG200 3600 1.55 1.10 1.10 1919 1.50 1280 0.90 0.90A n a l y s i s :Case: Appendix CRankine Methodology - Level Surcharge 250 psfUnit Type: Standard 21" / 120.00 pcf Wall Batter: 0.00 deg.Leveling Pad: Crushed StoneWall Ht: 10.00 ft e m b e d m e n t : 1.00 ftLevel Backfill Offset: 0.00 ftSurcharge: LL: 250 psf uniform surcharge DL: 0 psf uniform surchargeLoad Width: 100.00 ftLoad Width: 100.00 ftResults: Sliding Overturning Bearing Shear BendingFactors of Safety: 2.08 4.00 6.71 5.14 1.97Calculated Bearing Pressure: 1716 / 1600 psfEccentricity at base: 0.79 ftReinforcing: (ft & lbs/ft)Calc. Allow Ten Pk Conn Serv Conn PulloutLayer Height Length Tension Reinf. Type Tal Tcl Tsc FS4 8.00 8.5 424 SG200 1280 ok 758 ok N/A 1.72 ok3 5.33 8.5 611 SG200 1280 ok 1027 ok N/A 4.36 ok2 2.67 8.5 732 SG200 1280 ok 1045 ok N/A 7.78 ok1 0.67 8.5 636 SG200 1280 ok 1045 ok N/A >10 okReinforcing Quantities (no waste included):SG200 3.78 sy/ftNOTE: THESE CALCULATIONS ARE FOR PRELIMINARY DESIGN ONLY AND SHOULDNOT BE USED FOR CONSTRUCTION WITHOUT REVIEW BY A QUALIFIED ENGINEERDate 9/30/2010 Appendix C Page 1C.11