Reference: National Structural Code of the Philippines-2015 Structural Steel Design by Jack McCormac and Stephen Csernak. AISC shapes database: www.aisc.org/g...
Question about sa #2: Yung value po ng Lp = 1.47 m ay nakadepend po sa ry (radius of gyration about y-axis). Since yung given moment Mx po ay about x-axis, hindi po ba dapat gawing rx (radius of gyration about x-axis) yung formula sa pagkuha ng Lp in which kapag sinubstitute ay magiging Lp = 4.7 m which is zone 1 na. Need pa po ba itong baguhin or sadyang fixed lang po talaga na Lp = 1.76*ry*sqrt(E/Fy) ang formula lagi sa Lp? Thank you in advance po.