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<br />EMBANKMENT AND FDUNDA TION STABILITY <br /> <br />DRAFT <br /> <br />I. Identify locations and describe the basis for selection of critical locations for analyses: <br />STATION 122+00 - MAXIMUM SECTION AND SLOPES ARE STEEPEST <br /> <br />0 Overall height: Sta 122+00 . height 8 ft. <br />[2! limiting foundation soil strength: <br /> Sta 122+00 . depth NATURAL GROUND to CLAYSTONE <br /> strength ;:$= 45 degrees, c = 250 osf <br />!:il slope: SS = 3 (h) to 1 (v) <br /> <br />(Repeat as needed on an added sheet for additional slopes and locations) <br /> <br />2. Specify the embankment stability analyses methodology used (e.g. circular arc, sliding block, infinite slope, <br />etc.): CIRClA..AR ARC <br /> <br />3. Summary of stability analysis results: <br /> <br /> Critical <br />Case loadino Conditions Safetv Factor Criteria (Min.l <br />I End of ~onstruction NOT APPLICABLE 1.3 <br />II Sudden drawdown 4.3 1.0 <br />III Critical flood stage 4.9 1.4 <br />IV Steady seepage at flood stage NOT APPLICABLE. 1.4 <br />VI Earthquake (Case I) NOT APPLICABLE 1.0 <br /> <br />(Reference: U.S. Army Corps of Engineers EM;lll0-2-1913 Table 6-1) <br /> <br />4. Was a seepage analysis for the embankment performed? 0 Yes ~ No <br />Describe methodology used: NOT APPLICABLE BECAUSE FLOOD WATER RISES A/-t) <br />FALLS IN LESS THAN (?) I-<<JURS, TI-EREFORE. TIME IS NOT SUFFICIENT TO ESTABLISH <br />FLOW TI-f'lOlJ(.;H EMBANKMENT. <br /> <br />5. <br /> <br />Was a seepage analysis for the foundation performed? <br />Were uplift pressures at the embankment landside toe checked? <br />Were. seepage exit gradients checked for piping potential? - <br /> <br />f9 .Yes 0 No <br />f9 Y~ 0 No . <br />. t!J Yes o' No .,~, <br /> <br />. : ~:. /,:.'. :; .... . ," . <br /> <br />6. <br /> <br />The duration of 100-year flood hydrograph against the embankment is <br /> <br />(?) <br /> <br />Hrs. <br /> <br />Note: Attach engineering analysis to support construction plans. <br />. <br /> <br />. ,- .... --.. ~-... .......... . ,..'. <br /> <br />- '. _ _. . . ,'_ '. . ~ .'.., _ ....f .. <br /> <br />. . <br /> <br />· STEADY SEEPAGE AT FLOOD STAGE WILL <br />IN LESS THAN (?) HJURS, THEREFORE. <br />STATE C(N)ITION. <br /> <br />NOT HAPPEN BECAUSE FLOOD WATER RISES AND FALLS <br />TIME IS NOT SlFFICIENT TO ESTABLISH STEADY <br /> <br />. .." - .... . ..- ...".. -,,~ -,,' '-"", ...-. - ..~ -..". ,_.... ."---... .:........"... "-.. .... ..'- <br /> <br />LeVffJfloodw.11 Syft.m ARllys.s Form <br /> <br />MT.2 F_ . <br /> <br />'.geSoft <br />