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Lp ve Lr sınır uzunlukları ise sırasıyla Denk.(9.6a) ve Denk.(9.6b) ile belirlencektirbelirlenecektir.
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| body | --uriencoded--$$ \normalsize L_p = 1.76i_y \sqrt %7B \frac %7BE%7D%7BF_y%7D%7D &\qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (9.6a) \\ L_r = 1.95i_%7Bts%7D \frac%7BE%7D%7B0.7i_%7Bts%7D%7D \sqrt %7B \frac%7BJ_c%7D%7BW_%7Bex%7Dh_o%7D \sqrt %7B \left ( \frac%7BJ_c%7D%7BW_%7Bex%7Dh_o%7D \right )%5e2 +6.76 \left ( \frac%7B0.7F_y%7D%7BE%7D \right )%5e2%7D%7D &\qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (9.6b) $$ |
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(c) When
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| body | $$ \normalsize L_b > L_r $$ |
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| body | --uriencoded--$$ \normalsize M_n = F_%7Bcr%7DS_%7Bx%7D \leq M_p & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (F2-3) \\ F_%7Bcr%7D = \frac%7BC_b \pi%5e2E%7D%7B\left ( \frac %7BL_b%7D%7Br_%7Bts%7D%7D \right )%5e2%7D \sqrt %7B1+0.078 \frac%7BJ_c%7D%7BS_xh_o%7D \left ( \frac %7BL_b%7D%7Br_%7Bts%7D%7D \right )%5e2%7D & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (F2-4) \\ L_p= 1.76 r_y \sqrt%7B\frac%7BE%7D%7BF_y%7D%7D & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (F2-5) \\ L_r= 1.95 r_%7Bts%7D \frac %7BE%7D%7B0.7F_y%7D \sqrt%7B\frac%7BJ_c%7D%7BS_xh_o%7D + \sqrt%7B%7B \left( \frac%7BJ_c%7D%7BS_xho%7D \right)%5e2%7D + 6.76 \left (\frac %7B0.7 F_y%7D%7BE%7D \right )%5e2 %7D%7D & \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (F2-6) $$ |
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