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<br />M = R4FL = 223 = 1.83 <br />N R3FD 122 <br />-1 cos(2.23) <br />fJ = tan <br />(1.83+1 76 )Sin(21.8)+Sin(2.23) <br />17 223 <br /> <br />(for both block sizes) <br /> <br />~ = 33.630 <br />~ = 27.330 <br /> <br />1)=90-~-^ <br />I) = 54.140 <br />I) = 60.440 <br /> <br />(for Block Size 1) <br />(for Block Size 2) <br /> <br />(for Block Size 1) <br />(for Block Size 2) <br /> <br />11' = 0.210 <br />11' = 0.156 <br /> <br />(stability number on the side slope for Block Size 1) <br />(stability number on the side slope for Block Size 2) <br /> <br />cos( 21.80 -{ 0.223) <br />SF = -\ 0.076 = 2.94 <br /> <br />0.21 O( ~:~~~ ) + sin(21.8 0 )cos( 33.630) <br /> <br />(for block size 1) <br /> <br />COS(21.8o-{0.223) <br />SF = -\ 0.076 - 3.46 <br />0.156( ~:~~~) + sin(21.80 )COS(27.330) <br /> <br />(for block size 2) <br /> <br />Now the effect of possible vertical projections in the flow must be considered. It is assumed <br />that an installation specification tolerance of 12.7 mm (0.5 inches) in the vertical will be <br />maintained. <br /> <br />F~ = 0.5(0.0127(0.329X1000XV)2) = 2.089V2 <br /> <br />Fo = 2.089(3.78)2 = 29.8 for Block Size 1 <br /> <br />F~ = 2.089(4.36)2 = 39.7 for Block Size 2 <br /> <br />Now assuming that the additional lift due to the vertical displacement is equal to the <br />additional drag (that is FD = Fd: <br /> <br />4.12 <br />