Laserfiche WebLink
<br />' San Luis PlojeU Phue U Raise 1 Expansion - Pinsl Construction Report <br />' 5.4.1 Fatbanl®ent Raise Fill <br />' The original specifications for construction of the embankment raise set forth in the Design Report <br />dated July 13, 1993 called for material Type 1 fill for wnstructing the raise as a homogeneous, <br />' mono-fill structure. The gradation limits for material Type 1 were revised by the Engineer to allow <br />the use of material with slightly greater fines content (percent passing a No. 200 sieve). This <br />revision was approved by the Division on January 4, 1994 as Technical Revisions TR-Ol6 to Permit <br />No. M-88-112. The revised specification for this material resulted in a fill material which is similar <br />' in nature to the Type 2 material used for the upstream face of the initial embankment. The <br />following gradation limits were adopted for the raise fill embankment material: <br />' U.S. Standard Sieve Size 96 Finer By Weight <br />' 3/a inch > 65 <br />iY 4 45-95 <br />' ~ 40 35-90 <br />#200 < 35 <br />Where in contact with the VI.DPE liner at the ends of the embankment, the maximum allowable <br />particle size for this material was specified as ltfi inches, elsewhere the maximum particle size was <br />' specified as six inches. <br />' Where significant oversized material was encountered in the fill material, as placed on the <br />embankment, this oversize was removed by working to the outside and inside slope of the raise, or <br />broken down in-place by the weight of the Caterpillar D-9 bulldozer spreading the fill. <br />1 <br />Embankment raise fill was compacted to a minimum density of 85 percent of the maximum dry <br />' density (ASTM D-698). Development of a method specification to achieve this minimum density <br />proved acceptable. The fill was placed in maximum three foot thick loose lifts and compacted <br />' through trafficking by Caterpillar Model 777 haul trucks with an empty gross vehicle weight of <br />approximately 65 tons. The haul truck traffic was routed to provide coverage of the fill. The entire <br />thickness of each lift was tested for minimum density requirements as set forth in the Design Report <br />' and found to meet these requirements. On the shoulders of the embankment, a Caterpillar Model <br />CP-553 sheepsfoot compactor was utilized to achieve passing densities. <br />1 ay ~ sect o. <br /> <br />