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Site Study - January 1979
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Site Study - January 1979
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CSAH #57 is intersected about 550' east of the CR #56 centerline, approxi- <br />mately 290' south of the runway's north end or 490' south of primary <br />surface's north end. In order to provide the necessary 15' clearance <br />over CSAH #57, the runway would have to terminate approximately 960 feet <br />(primary surface about 760') south of the CSAH #57 centerline which <br />would result in a runway length of only 2050 feet. Adequate road <br />clearance above CR #56 is attained by the northwesterly approach <br />surface even when the primary runway is extended to 3300 feet. <br />Utilizing the all weather wind rose data from Twin Cities International <br />Airport, runway 16 -34 can provide only an 81.9 per cent wind coverage <br />with less than a 12 MPH crosswind component. Therefore, strong consid- <br />eration must be given to providing a crosswind runway in order to achieve <br />the desired 95% coverage. If the crosswind runway is aligned with the <br />existing crosswind sod runway (runway 9 -27) as shown in exhibit C, a <br />wind coverage of 95.4% is attained. <br />Crosswind runway lengths are suggested to be 80% of the primary <br />runway length or 2640 feet in this case. In order to achieve <br />the required 15' approach surface clearance above CR #56, the west <br />end of the crosswind primary surface must be located approximately <br />700 feet east of the county road centerline. When extending the <br />crosswind runway primary surface easterly the required 3040 feet <br />(2640' runway plus 200' threshholds at each end), the CSAH #57 <br />centerline is again intersected approximately 250' west of the <br />16 <br />
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