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`� J1 � , <br /> � <br /> � � H i <br /> b <br /> � � Z <br /> b ' <br /> � y m other.1ack In The Bor, projects, Foodmaker, Inc. has provided traffic voh�me estimares of 1000 <br /> y � H light vehicles per day plus 5-18,000 pound, single axle loads from heavy Wcks per day in thc <br /> o a o traffic lanes. Estimated traffic volume for lhe parking stalls was 50 l�ght vehicles per day. <br /> m y H Traffic lane luading will control the thickness recommendaGons for the pavement secdon. The <br /> es6mated traffic 'ane volumes zre approxim2tely equal to an equivalent a;cie loading (EAL) of <br /> � � �a 100,000 over lhc 20-ycar design life cycle. Our pavement design recommendalions are based <br /> o H un this EAL value, and a firm, unyieldmg subgrade recompacted to a minimum of 95 percent <br /> � �e�a R 4 of the Modified Procior Maximum L'ensity using ASTM:D 1557 u the standard. <br /> � <br /> z y � The exist�ng grade of the site varied by several feet etnve and below the grade of Evergreen <br /> � H y -• VJay. Even though we were not providid wi:h f:nish floor and pavement grades, we anticipate <br /> � e y that :hese azeas will be cut and fillc::! as necessary to provide a more consistent grede closer to <br /> � a that of Evergreen Way. Provided tiiat the parking lot fill is placed as recommended in this <br /> "' M report and the existing dense silt and sand fill soil ue net disturbed during constmction, they <br /> o v`�i can providc a suitable subgrade for the ;�avement. Pavement subgrade prepazation should <br /> , include first stighQy crowning the subgrade to drain to G�e edges of the paved areas. Next, the <br /> surface should be rr,compacted with a vibratory roller to a minimum of 95 pzrcent of their <br /> �'� maximum density as defined by ASTM:D 1557. After recompaction, the subgrade should be <br /> proofrolled with a fully loaded, tandem axle dump lruck to identify any soft or 'pumping" <br /> areas. If such areas are observed, the} should be overexcavated and backfilled �vith free- <br /> draining structural fill. Flexible and rigid pavement sections should then be placed as <br /> recommended in the following secdon:. <br /> ; _1_1,1 Flexible Pavement Design <br /> Upon complation of the subgrade preparation as described above, the crushed base course, the <br /> leveling course and sur(ace pavement may be placed. The recommended tlexible pavemen: <br /> 'i��„ '- section for this site is as follows: <br /> i <br /> ��. <br /> 3 inches - Washington State Class "B" Asphaltic Concmte Pavement <br /> � ; <br /> � ��� 3 inches - Compacted, 5/8 inch minus crushed sudacing leveling course <br /> �', , 3 inches - Compacted, 1-1/4 inch minus crushed surfacing base course <br /> '�� - The base course and leveling course material should be compacted to 95 percent o( maximum <br /> j �1 dry density as dciined by ASTM:D 1557. <br /> 11.2 Rieid Pavement Design <br /> w� . Upon completion of the subgrade preparation as described above, the recommended rigid <br /> pavement section for the drive-thru lane and dumpster storage areas would be as follows: <br /> , � 5 inc�es - Yoriland Cemeni Concrete(PCC) <br /> !'��� � 3 inches- Compacted, S/8 inch minus crushed sudacing leveling course (minimum <br /> � 95 pe�c.nt as defined by ASTM:D 1557) <br /> I '�'0' 3 inches- Cornpacted, 1-1l4 inch minus crushed surfacing base course <br /> \ <br /> 8 <br />