Can someone do condition 3

1) Consider the pinned-pinned column in compression (Fig. 1) for the following weak-axis lateral bracing conditions: CONDITION 1: No bracing CONDITION 2: Bracing at mid-span CONDITION 3: Bracing somewhere along the column length (see Problem 1g) Use AISC design values for end support conditions. Assume initially that flexural buckling (FB) controls the design. Using the LRFD framework, the column will be designed to withstand an unfactored dead load (DL) = 180 kips and live load (LL) = 240 kips. Please perform the following: 28' Figure 1. Column in question. For each of the three bracing conditions find the following: a) KL b) KL, (for CONDITION 3 see Problem 1g) c) The lightest, non-slender W 12 section of A992 steel to serve as the compression member d) KLE. e) Controlling axis f) Prof controlling axis g) For CONDITION 3 the architect insists on a W12x79 member where the weak-axis is the controlling axis (See Table). What is the maximum Kly value that will satisfy this request? NOTE: Please set up the solution in tabular form as illustrated below (continue to show and justify work): Condition KLX KLY Member KLY, EQ. Ctrl. Axis 1 2 3 W12x79 weak-axis () 1) Consider the pinned-pinned column in compression (Fig. 1) for the following weak-axis lateral bracing conditions: CONDITION 1: No bracing CONDITION 2: Bracing at mid-span CONDITION 3: Bracing somewhere along the column length (see Problem 1g) Use AISC design values for end support conditions. Assume initially that flexural buckling (FB) controls the design. Using the LRFD framework, the column will be designed to withstand an unfactored dead load (DL) = 180 kips and live load (LL) = 240 kips. Please perform the following: 28' Figure 1. Column in question. For each of the three bracing conditions find the following: a) KL b) KL, (for CONDITION 3 see Problem 1g) c) The lightest, non-slender W 12 section of A992 steel to serve as the compression member d) KLE. e) Controlling axis f) Prof controlling axis g) For CONDITION 3 the architect insists on a W12x79 member where the weak-axis is the controlling axis (See Table). What is the maximum Kly value that will satisfy this request? NOTE: Please set up the solution in tabular form as illustrated below (continue to show and justify work): Condition KLX KLY Member KLY, EQ. Ctrl. Axis 1 2 3 W12x79 weak-axis ()