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aOIES. �1111 <br />1. Backslope angle varies - not to exceed <br />1.5H:1 V. <br />2. Use a free draining borrow material meeting <br />the requirements of 1992 WSDOT Standard <br />Specification section 9-03.14 Gravel Borrcw <br />compacted in 8 inch lifts to 90%of the maximtan <br />density as determined by ASTM D-1597. Use <br />only hand operated plate compactors within 2 <br />fat of the will. <br />3. Wall height varies up to a maximwn height of <br />10.0 ft. Wall configuration shall be as follows: <br />Wall Height C21figuadan <br />7.5-10.0' 2 rows parallel <br />5.0-7.5' 1 row perpendie <br />2.5-5.0' 1 row parallel <br />Configurations are given in reference to the wall <br />face. Blocks should be placed as shown in the <br />drawing so that vertical spacings we staggered. <br />Well should be plead at a batter of 6V:1H. Use <br />of bench type block along the top row is <br />optional. <br />4. Excavate to native, undisturbed soil (Sill, <br />Transitional Bed - Q16). Maximum allowable <br />baring pressure is 2000 psf per section 4.5, page <br />II of the Gentechnial Report dated Aug. 5, <br />1998. <br />5. Plan a minimum 24" crushed surfacing . <br />beneath wall as shown. Material should meet the <br />requirements of 1992 WSDOT Standard <br />Specification section 9-03.9(3b Crushed <br />Surfacing. Material shall be compacted to .'5% <br />of the maximum density as determined bye <br />ASTM D-1557. <br />6. Install a 6 inch diameter slotted PVC pipe <br />behind the bottom row of blocks for drainage. <br />Slope pipe to drain and to daylight out from <br />behind the wall. Embed the slotted pipe in drain <br />gravel as shown. <br />LOCK BLOCK WALL DETAIL <br />� Jones �trsidenea :.� <br />GES, Inc. <br />