A W14x61, A992 steel, 6.5 m long fixed at both ends, is to be investigated for use as a column in a braced frame. The axial load and end moments obtained from analysis of gravity loads and wind load are given below. All bending moments are about the strong axis with single curvature forming along the column. Use ASD and conservative value of Cb. Neglect local buckling for compression. Consider secondary effects. Calculate the interaction ratio. Properties of W14x61 A - 11500 mm² bf = 254 mm d = 353 mm tf = 16.4 mm tw = 9.53 mm ry = 62.2 mm k₁ = 25.4 mm Zx 1670 x 10³ mm³ Sx 1510 x 10³ mm³ ■

A lightly welded steel beam shown in Figure 5 is continuously supported along its length. A downward concentrated load of 4P acts at Point C, and two downward concentrated loads P act at Points A and E. The beam with full lateral restraint is bent about its major principal x-axis. Determine the followings: a. Section type based on section slenderness; b. Effective section modulus; c. The maximum design value of P. A k B fu 6 m d tw bf 6 m tf 4P d bf tw tf = - = fyf= fyw 6 m D um * 550 mm 206 mm 6 mm 10 mm 320 MPa = 340 MPa Zx=1362985 mm³ Sx 1533750 mm³ Figure 5 Steel beam under design loads. 6 m P E

Find Shape factor and Plastic Moment

Solve for the following for the built-up I-section shown. (a) Elastic neutral axis location (b) Moment of inertia about the x (horizontal) axis (c) Moment of inertia about the y (vertical) axis (d) Identify which axis is the "strong" axis and which is the "weak" axis (e) Section moduli about both the strong and the weak axes (f) Radius of gyration about both the strong and the weak axes (g) If a moment, M-10 ft-kips, is applied to the cross-section about its strong axis, what is the maximum stress in the cross-section, and where would that stress occur? Utilize the values that you determined in Part (e). (h) If a moment, M=5 ft-kips, is applied to the cross-section about its weak axis, what is the maximum stress in the cross-section, and where would that stress occur? Utilize the values that you determined in part (e). (i) If the cross-section is made of Gr. A36 steel, would these moments produce linear or non-linear behavior in the cross-section? Why? k 18 in. 1 in. 10 in. H1₁ 6 in. 2…