Stężenie belek (wytrzymałość wymagana)

Stability Bracing of Beams (Required Strength)

P_{br} = 0.02 \cdot (\frac{M_{r} \cdot C_{d}}{h_{o}})

P_br	Required strength of the stability beam bracing
M_r	Required flexural strength of the beam. M_r = R_yF_yZ/α_s[AISC 341 Equation D1-1]
C_d	Double curvature factor = 1.0 [AISC 341 Section D1.2a(b)]
h_o	Distance between the flange centroid h_o = d - t_f

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