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0 Based on avq <br /> Rock <br /> �� ~ <br /> 6 Eetimellon <br /> O i Cr `� <br /> W 0.6- <br /> cc <br /> .8 c W <br /> Ljj 04 <br /> v Stiff soils ' �'� J <br /> �• <br /> Q i i'� Z 0.4 <br /> oe <br /> Q 0.2 = +d• \` �\ <br /> ,•� Deep cohesionless soils Q 0.2- •0 <br /> W <br /> (L <br /> 0.1 ` <br /> 0 <br /> I/ <br /> 0 <br /> / 2 <br /> o CLOSEST HORIZONTAL DISTANCE FROM ZONE <br /> 0 0.1 so 100 <br /> 0.2 0'3 OF ENERGY RELEASE (mi) <br /> 0.4 0.5 0.8 0.7 <br /> Brock • MAXIMUM ACCELERATION ON ROCK, g Figure 10.22 Average values of maximum accelerations in rock, <br /> Figure 10.20 Approximate values for ground acceleration. (From S 1982'Reproduced b (From Seed and ldriss, <br /> Reproduced b Seed and ldriss, 1982. Y Permission of Earthquakes Engineering Research Institute.) <br /> Y Permission of Earthquake Engineering Research Institute.) <br /> 1000 <br /> 0.e - N <br /> Ms81/4 <br /> M 0.5- <br /> 100 M 7 1/2 <br /> Z o E <br /> �•i;rfllrr�.J. <br /> O Q 0.4 ( v <br /> s <br /> 1 <br /> C7 CC z <br /> J 1980 tome Prteta "-- 10 <br /> Uj .^ Z "'+.• <br /> y U 0.3 /� I <br /> W <br /> a ,rC::i• � <br /> W ' V <br /> Median relationship recommended 4 1 M - <br /> 0.2 for use In empirical correlations 4 <br /> ro tr <br /> V) 0.1 <br /> 0.1 <br /> / 1085 Mexico City <br /> 0� <br /> 0.1 0.2 <br /> 0.3 0.4 0.5 0.8 1 <br /> ACCELERATION ON ROCK SITES, g 1 0'010 <br /> 0.2 0.4 0.8 <br /> Figure 10.21 Variations of acceleratons on soh soil sites versus rock sites. (From ldriss. 1 o'a t,o <br /> 1,990.) ' ky/kmax <br /> Figure 10.23 Variation or permanent displacement with yield acceleration.(From Makdisi <br /> and Seed. 1977.) <br /> 1 <br /> $41 <br />