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Gravitj� <br /> sa�Ype c�ira,�adan <br /> .--�,� <br /> Analyze a gravity wall with the ,^ �'�� � -r , <br /> ��i <br /> (ollowing site eonditions: .� ' ''r`- % � � j <br /> Soil Type = Mixed Sil�s (�) _ �Q' � Coneept <br /> W.�il Heign� (H) _ .� a4 n /1.05m1 Qalter = 1� F��p� <br /> Qearir,� Capacity(O��J = 30001b/IP (743,640 Pa) / � <br /> N =H i <br /> Wall Densiry(Yw) = 130 Ib//P(2,067 Kg/m'1 FR u,-' �,n'.`• <br /> Soil Densit (Y�) = 720 Ib/!P (7.923 Kg/m'1 L� - � �E ' ��BC�C'. <br /> Factored���ciion Angle (�w) = O.6G� - —� {��l �--�- �—- � <br /> Depllt o! Wall(dJ = 0.97 fl (0.3 m) � - --! • Sliding ..�.�. <br /> S;ope Above W.�II (i) = 0 Surcharge = None � � �- " <br /> Siicing laesistar� • Leverage~� <br /> ,� <br /> F� = Active lorce on wal� = 0.5 ('Yz) (K�) I I' = 156 Ib/11 (2.295 N/m) • Total unit: <br /> Kn = Active pressure coefficient ��_r�.. <br /> �.. <br /> CSC (P) SW (P — �) 2 .4;...' <br /> ��SIN (Q ` �W��� �� /SIN a yy SIN — i �n 1 � ;:_'��� <br /> � siN (p - i) J = 0.2197 :.� <br /> ' ,t <br /> W = To�al weigh� of wan - yw (H) (d) = A34 Ib/ft (6,639 N/m) � <br /> F� -- Venlcal lorce on wall from rcvained soils = F�5iN (�,y) = 53 Ib/R p85 N/m) pnalysis <br /> Fi� = f-lurizonlal lorce on wall Irom retained wils= F�cos(�„�) = 147 Ib/ft(2,757 N/mJ <br /> FW = Force resisling sliding = (W + F�) inNQ� = 281 Ib/It (4,130 N/mJ <br /> Safety f�ctor against sliding: SFS = Fu = 281 Ib/ft(4,130 N/m) _1.91 -�- 1.5 OK ":;� <br /> Fi� 147 Ib/R (2,157 N/m) • S��dln9 .i"" <br /> s`ti: <br /> Ouerti.rr�^g �ist—""'� • Bearing',., <br /> Mq = Ovcrtuming momenl = Fii (0.33) H = 168 fL Ib/11 (754 N�mhn) :{' <br /> Mk = Moment resisfing overturning = (W) �d/7 . 0.5 (li) inN (90° - (i)� • Overwmin� <br /> ' �Fv) I d + (0.33) (Hl inN (90" - (1)� = 436 II. Ib/11 (1.945 N-m/nJ .,i`� <br /> Safety �aclor aqainst overtummg: `���>� <br /> SFO =.�nA - 436 11. Ib/ft (1.945 Nm/m) = 2.6 - 2.0 OK _:",y <br /> �M„ 168 1�. Ib/ft (ISA N�mim) <br /> �s. <br /> �'� `�� Considerations <br /> 6�v =. Pressure exerted on sotl��low base block = (W + F�) /d = 487 Ib/h'(23,�47 Pa) <br /> QS = 3000 Ib/(P(1 A3.6A0 Pa) <br /> Safely lactor agains� bearing failure: <br /> FSt3 - (T` _ 3.000Ib/rt' (143.rdoP,,1 -: 6.tf 2.0 OK • SIOPCS ,��, <br /> (T��; aE37 II�/It' (23.e47 Po) <br /> i= <br /> _ . , TAOIE NOTE: • Surcherges <br /> • No sureh�rge .;.R;- <br /> • Terraces�`' <br /> Firm to Silly Clay 27° Z5 h 2.75 fi 3.25 (t <br /> OJsm 0.84m 1m= • GIob81 sf8 <br /> u <br /> Silry Sand 32° 3 0 II 3S fi A.45 It . .'" <br /> 0.9m , 1.O7m 1.36m � ; � <br /> Clean Sand/Gravel 36` 3.5 ft a.� �t ��5 �� . Level slope nbove wnll ��� <br /> 1.07m i.22m 1.68m ' W���s fhal exceed these � <br /> ?�, <br /> heighls will need <br /> 1or mrrr�•��r�� a, 72 iable 8.7 rein�orcr.ment. <br /> _:ir <br />