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BPART SIXAppendix BNCMA 2ND EDITION - COULOMB 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 BDesign Method: NCMA 2nd Edition (parallelogram 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: 1.50 Serviceability: 1.00Reinforcing 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 BNCMA 2nd Edition - 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: 2.85 5.81 8.08 6.19 2.37Calculated Bearing Pressure: 1591 / 1449 psfEccentricity at base: 0.54 ftReinforcing: (ft & lbs/ft)Calc. Allow Ten Pk Conn Serv Conn PulloutLayer Height Length Tension Reinf. Type Tal Tcl Tsc FS4 8.00 9.0 352 SG200 1280 ok 758 ok 825 ok 1.92 ok3 5.33 9.0 507 SG200 1280 ok 1027 ok 865 ok 5.32 ok2 2.67 9.0 608 SG200 1280 ok 1045 ok 905 ok 9.86 ok1 0.67 9.0 528 SG200 1280 ok 1045 ok 935 ok >10 okReinforcing Quantities (no waste included):SG200 4.00 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 B Page 1B.10