Question

From Station 5+850 to 6+50, a fill wall is needed to maintain the grade of the highway A cantilever reinforced cast-in-place (CIP) wall shown in Figure 4 was selected. For this wall, compute the following a) Resistance against sliding. Neglect passive resistance in front of the wall. Assume friction angle between CIP concrete and foundation soil as b) Reevaluate sliding resistance by increasing heel width from 11 ft to 14 ft. Reevaluate sliding resistance by increasing ? (backfill) from 29° to 32°. d) Evaluate bearing resistance of the baseline case in (a) above 1.5 ft 10 Not to Scale -115pcf ?-29. P EH ? 35° Clean fine to medium sand 11 ft CN 2 ft Figure 4: Baseline Case (with forces)

Answer 1

1 5ft l O 255t EII5Pcf 2, sfト 11ft a. Resistence ogoinst sliding Neglect Poive esistence Inflent of the wall given fiction 6 фь 35 anale . ' The whale uit of the we Slidin ent asoinst

Fom the n(249x45 × 145 906.25 Found pen fat 54315 P/ft -3 ToTed Load of Wall - wthetw3 5437.5 906 2.5ナ5 4 37 s N- 11181, 25 t 2 |-从 0.4264- -4264从 ="es .298 Resistere ogoinst suding FN F =0.298×오1781.25 -| 3510.81 P/ft Potive Reistene of fHont well

l o 2. J3 .Sft 2ft 2ft obove probleno 132 SK145 6525 /st ·Toral ut of tee Waf (w) 1286875 fyft F 3834-38 P/st 5304.4 P/St

Total Slidn mejisknce 3834-88 5304. 4 139.30 P/t The back fil is ty to sluide the well, 1t uill not orese Tesistance ogeinst Siding there is no eyshire genped Ka

COSI- cost-cos Cosio 0.98个 - coSio x Cosio-coSo 0.984- 0.4S2 - .984 984+04s2 Ka 0.364 1048.oo P/t Achve fare ox 1048 xa513100 /sE S. No Loadg Levenaom @ tve : = 906.25 233 21 1.56 3 25ft 11611.87 5431.5 ㄱ.sft 40181 25 8858.34 5 Pai 13100 833 -109) 23 MR 69423.02 , Mo LODZ3 LL781 251 6xlo SC X = MNet_-3969998 1138) 2s EV > 10.86ft