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f <br /> L <br /> All concrete must be jitterbugged or vibrated to remove <br /> entrappe weighld5air <br /> and with <br /> finished by bull floating. All concrete shall be <br /> normahe CNTACTR must <br /> a minimum compressive sfromgeventh �ry trucckk loadpsiaof2cconcrete,8 days. Tin acccordancce with <br /> provide test cylinders <br /> ASTM standard C873 to verify concrete strength and quality. <br /> Water Crossing Aprons <br /> ncrete and <br /> A six foot ( hedsameorty detailoas(thhe) long drivingosurface, shallkbep in tinstalled on <br /> constructed in be on <br /> the upstream and down <br /> talevertical )f extendi the ng <br /> stram side aprons The <br /> least twofeeth(21 ) belowathe <br /> grade of 2:1 (horizon <br /> soil surface of the drainage. They must be shaped to control water movemen <br /> of the <br /> such that drainage flows across the upsetathe baspn�nandtintoethenter downstream <br /> driving surface when exiting <br /> cross the downstream apron. <br /> channel when flowing a <br /> Additional Earthwork <br /> To ensure satisfactory drainage below the downstream apron, the CONTRACTOR <br /> must cut a channel or ditch through <br /> ditchthe <br /> shalleinitdiallyahave that <br /> apfifteenyfootc(15' ) <br /> the drainage. This channel o <br /> floor width, 5:1 (horizontal :vertica" , foot, (a w foote(rm' ) depwithth, and be <br /> graded to the downstream apron. <br /> A four(horizontal :vertical ) side slopes <br /> shall <br /> west sidetofc the roadhefrom north <br /> spoilside <br /> ridge <br /> the drainage channel , on the east and <br /> to road to ensure that the water flows to the west pond. , <br /> 6.3 MEASUREMENT AND PAYMENT <br /> Payment will be made at the prbee considered bid for hfull wcompensation water �for�all alabor, <br /> lled as <br /> specified. Such payment will <br /> materials, equipment and all <br /> other <br /> ossi ems necessary and incidental to the <br /> construction of the to <br /> -19- <br />