A two-story frame, is braced in y axis (Ky=1) and is connected as moment frame for x axis as shown below. Assuming elastic behavior, and all steel has Fy-50ksi, determine following for column BF. a) Kx for column. b) The governing buckling axis. c) Failure mode in column (Inelastic or elastic global buckling). d) Design strength of the column according to LRFD method (Pn). e) If the column is adequate for the service dead load of 180K and live load of 240K. f) Use the kx value obtained in part a and select lightest HSS rectangular to replace W12x72. Compare the weight of selected section E A W18 X 35 W18 X 35 F 20' B W12 X 50 W12 X 72 W18 X 40 W18 X 50 30' G K 30' H 20' 15'

A two-story frame, is braced in y axis (Ky=1) and is connected as moment frame for x axis as shown below. Assuming elastic behavior, and all steel has Fy-50ksi, determine following for column BF. a) Kx for column. b) The governing buckling axis. c) Failure mode in column (Inelastic or elastic global buckling). d) Design strength of the column according to LRFD method (Pn). e) If the column is adequate for the service dead load of 180K and live load of 240K. f) Use the kx value obtained in part a and select lightest HSS rectangular to replace W12x72. Compare the weight of selected section E A W18 X 35 W18 X 35 F 20' B W12 X 50 W12 X 72 W18 X 40 W18 X 50 30' G K 30' H 20' 15'

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter5: Beams

Section: Chapter Questions

Problem 5.2.1P

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