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Cq�qpE GEOTECI-iNICAL INC. <br /> ]ob No. 9307-0SG <br /> � August 6, 1992 <br /> Str�ctaral Fill <br /> Swctural fill should be used in areas where the native bearinB soils cannot provide the proper <br /> , ,aced on a proparlY Prep� �pve <br /> elevation for swctural elements. 'I'ha fill should be p• <br /> yeacing soil subgrade in maximum twelve (12) inch loose lifts and comPacted t°at least ninety- <br /> _ five (9596) percent of the ASTM D-1557 ma�cimum dry density value. The fill should conform <br /> to the following gradation: <br /> , ieve Siz� Prrcrnr Passin¢ <br /> 4 inch 1� <br /> �4 25-75 <br /> ^ �� 10.0 maximum. ; <br /> _, <br /> gased on fraction <br /> ,, ,.. <br /> passing A`4 sieve ' <br />! � ..� <br />� ,�' '� . During wet conditions, the percent passing the N200 sieve should be limited to 596 passing, <br />; '� ..� �j y�� � �e �;racdon passing the N4 sieve. <br /> ,� . <br />� �1 :: ' p� <br />� �� �•i clab-On- ,rade <br />� F� 1 � The slab-on-grade floor subgrade should consist of the nadve, medium dense, silry sand� <br /> "" however, in slab azeas which have been over excavated, the slab-on-grade floor car►bo suppo►ted <br /> J on structural fill. All loose or so:t areas e"�Op°�T� �n the medium dense silty sand should be <br /> over�acavated and fi��ed µ"th swctural fill in accocdance with our recommendauons. <br />' J A four (4) inch layer of clean sand, Pea Bravel, or crushed rock having less than five (5'%) I <br />' F�ercent material passing the If200 sieve, based on the fm�end plac gta polyproPY�ene vapor , <br /> placed below the slabs as a capillary break• We �O <br /> _ g <br /> � <br /> i <br /> i � <br /> , , , <br /> , ., <br /> p �1 �- � �<_'_F.�-z-.. _�.+.�--'-�- � ._-_'__ _' ^ yl��r.� <br />� <br />� '�i-��' - . ��.. � . <br /> �I �� � ���:5 . .. _ - . . � � <br /> i �' <br />