Question

-8.000 in. from the centroidal axis of the wide-flange shape. Use the AISC the stiffened seat support at an eccentricity of e equations given in Section 16.5 and assume that E29000 ksi and a 36 ksi. Em olov the allovable stress method to determine: =12.5 kips. Report the results in the form of the stress ratio (a) whether the column is safe for a load Gallew (b) the magnitude of the largest eccentric load P that may be applied too the column. 12.00 ft. a 0.575 in. b 7.125 in .. c 8.275 in.. d 7.875 in. Assume L 0.38 in and f eccentricity Cross section 8.275 in ., d = 7.875 in ., and t = 0.38 in 12.00 ft, a 0.575 in., b = 7.125 in ., c Assume L eccentricity C b a d Cross section Enter the stress ratio and choose the correct answer regarding whether the column is safe or unsafe. a) Oallow The column is Safe Unsafe Enter the magnitude of the largest eccentric load P that may be applied to the column b) kips Р-

Answer 1

Section Troperties 4 = 2C05T5(7-8 75) + (0:32)C7:1R5)= |1764 i z7.875)8215)3 (7.495)(7-125)- 4594 o 4 4 CO55.85) 1 +07.125)(0.38)46.8385 b 12 vtz Tz 145-94 ーろ522 71-764 A 46.835 W764 ratio kirmiting slendvoness 4719,00o 36 s 133:681 E 4 TI KzL 81.77 (7flu FCe) 3.522

(2UR ainldt) KyL 44.36 i clastic eritical buchling otress OCnce KL >471 cr O.877e - 0.8T (r) Ky L (2) Rft) (IR in ft) 14436 i 1.995 elaotic Critical buckliry Stress TT29,000) 4436 = /3-734 ksi Simce CY 0.877e O.871 (13-734)- R:045 ks i Valous CY 2.045 1-67 - 0 auowT:212ksi e12:5 kipS ア otress method with Allousable P+ MzC C25)(8(7-875/2) 145.94 こ125 T764 t T 3 6 ksi 3.76 2 ア212 aloco safe U 0.52 . loac P b Larges t ccceritric < 7スR 5/2 (87.8 745.94 79L:11 P< 33.9i ksi