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CRITICAL SHEAR SURFACE <br />COORDINATES <br />SOIL PROPERTIES <br />POINT X— COORDINATE Y— <br />COORDINATE <br />— <br />ZONE C d t <br />MATERIAL <br />1 <br />245.00 <br />4830.00 <br />16 <br />0 (psf) (pcf) <br />2 <br />290.56 <br />4831.42 <br />3 <br />370.44 <br />4840.93 <br />O 32.12 204.5 99.47 <br />REFUSE FILL <br />4 <br />408.87 <br />4844.37 <br />5 <br />446.19 <br />4861.62 <br />0 31.00 0 130.00 <br />ALLUVIUM <br />6 <br />477.04 <br />4878.78 <br />0 38.00 1 o0o 150.00 BEDROCK <br />7 <br />554.76 <br />4889.58 <br />8 <br />620.06 <br />4923.96 <br />O 0.00 O 62.4 <br />POND <br />9 <br />642.87 <br />4949.86 <br />FACTOR OF SAFETY = <br />1.515 <br />(DEEP SHEAR SURFACE) <br />5000 <br />= <br />CRITICAL SHEAR <br />SURFACE <br />INCREASED PIEZOMETRIC SURFACE No. 1 <br />— <br />SAFETY FACTOR <br />= 1.515 <br />EXISTING FILL <br />= <br />400 SERIES PIEZOMETERS <br />4900 <br />— 200 <br />SERIES PIEZOMETERS <br />i O WITH PIEZOMETRIC <br />4 <br />_— SURFACE No. 1. <br />— <br />LOW PERMEABILITY BOUNDARY <br />hC L <br />WITH CONSTANT PORE <br />4800 — <br />PRESSURE OF 468 PSF. <br />O3 <br />O WITH <br />2 PRESSURE <br />CONSTANT PORE <br />OF 898.56 PSF. <br />0 +00 100 +00 200 +00 300 +00 400 +00 <br />500 +00 <br />600 +00 700 +00 800 +00 900 +00 1000 +00 <br />SECTION A -A, DEEP <br />SHEAR SURFACE SENSITIVITY ANALYSIS WITH 6% INCREASE <br />IN PIEZOMETRIC <br />SURFACE & 60% INCREASE <br />IN CONSTANT PORE PRESSURES. <br />NOTE: BASE, PIEZOMETRIC LEVELS CONSIDER PORE PRESSURES MEASURED ON 4- 23 -94. <br />STABILITY SECTION THROUGH 200 & 400 SERIES PIEZOMETERS <br />gLATE 40 <br />E EE STRN <br />NGINE INC. <br />1 111111 IIIII11111IIIII �I��� ����� �I�I I��I <br />I IIIIII11111Om���..•'n ^^ "0_71 504 <br />