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TR-25 Submittal <br /> Page 3 <br /> Bulkhead#3 Details <br /> Location: Approximately 375' from surface <br /> Design Head: 773 feet <br /> Concrete Design Strength 3000 psi <br /> Bulkhead Length ill <br /> Cross-section Dimensions: 12' wide x 15' high <br /> Rebar: <br /> Upstream: #6 rebar @ 12"centers—vertical and horizontal <br /> Downstream: #10 rebar @ 6"centers—vertical and horizontal <br /> Rebar Cover: 3.5"—both faces <br /> Perimeter Irregularity: 8.8 %perimeter irregularities projecting 0.14"minimum <br /> Drainage Pipe: 4" Schedule 40 SS with 1 - 3/8"thick thrust ring and 2— <br /> seep rings <br /> General Details <br /> Concrete Mix: #/cu.yd. <br /> Portland Type V 720 <br /> Coarse Aggregate(5/8") 1673 <br /> Fine Aggregate 1004 <br /> Fly Ash, Class F 115 <br /> Water 324 <br /> Trim Bars: All cutouts in the rebar cages will have 5' long trim bars placed @ <br /> 450to the rebar mat to prevent corner cracking. #10 bars for the <br /> #10 rebar mats and#6 bars for the#6 rebar mat. <br /> Concrete QA: Test cylinders will be taken at a minimum rate of 2 per 8 cu.yd. <br /> and strength tested for 7 day and 28 day break strengths. <br /> Low Pressure Grouting: <br /> The concrete/rock contact will be low pressure grouted after <br /> sufficient strength has been gained(approximately 7 days). One <br /> ring in the approximate center of the bulkhead with holes spaced <br /> @ 5' +or-. The construction drain pipes will be capped and <br /> grouted after the contact is grouted. <br />