PerloffMethodRevised!

PerloffMethodRevised! - t = thickness of footing or mat =...

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IMMEDIATE SETTLEMENT IN CLAYS BY THE METHOD OF PERLOFF 5 . 0 * 3 2 ) ( 3 2 1 = = S S ZC APP NET IMM for E I B q C C C S ν
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INFLUENCE VALUE, I ZC ( ν S = 0.5 ASSUMED) CORRECTION FOR EMBEDMENT DEPTH, C 1 (METHOD OF PERLOFF)
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CORRECTION FOR FOUNDATION RIGIDITY AND LOCATION, C 2 (METHOD OF PERLOFF) SHAPE CENTER (1) MIDDLE LONG (2) MIDDLE SHORT (3) CORNER (4) CIRCLE (RIGID) 0.79 0.79 - - - - CIRCLE (FLEX) 1.00 0.64 - - - - SQUARE (RIGID) 0.88 0.88 - - 0.88 SQUARE (FLEX) 1.00 0.67 - - 0.50 RECTANGLES (RIGID) 0.93 0.93 0.93 0.93 L / B = 1.5 (FLEX) 1.00 0.71 0.65 0.50 L / B = 2.0 (FLEX) 1.00 0.74 0.64 0.50 L / B = 3.0 (FLEX) 1.00 0.76 0.62 0.50 L / B = 10.0 (FLEX) 1.00 0.84 0.59 0.50 L / B = (FLEX) 1.00 0.94 0.54 0.50 FOOTING IS APPROXIMATELY “RIGID” IF:
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Unformatted text preview: t = thickness of footing or mat = center-to-center column spacing for mat foundation o r = width of footing for shallow foundation supporting single column NOTE: Increase thickness for rigid foundation by approximately 20 percent if footing is a strip footing instead of an equidimensional footing. CORRECTION FOR OVERLYING STIFF LAYER, C 3 (METHOD OF PERLOFF) RATIO E S(1) / E S(2) T 1 / B 2 5 10 100 0.00 1.000 1.000 1.000 1.000 0.10 0.972 0.943 0.923 0.760 0.25 0.885 0.779 0.699 0.431 0.50 0.747 0.566 0.463 0.228 1.00 0.627 0.399 0.287 0.121 2.50 0.550 0.274 0.175 0.058 5.00 0.525 0.238 0.136 0.036 0.500 0.200 0.100 0.010 3 48 S C E E t =...
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This note was uploaded on 07/19/2010 for the course CE 4433 taught by Professor Chrissaucier during the Spring '10 term at Mississippi State.

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PerloffMethodRevised! - t = thickness of footing or mat =...

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