Question2 Determine the LRFD design De Pn for the axially loaded W12 x 96 column which...
Problem 2. Design and select an ASTM A992 (Fy" 50 ksi) W-shape column to carry an axial dead load of 140 kips and live lond of 420 kips. The column is 30 feet long, and is pinned top and bottom in both axes. In addition, the column is laterally braced about the y-y axis (local weak/minor axis of the section) and torsionally braced at the midpoint. Limit the column size to a nominal 14 in. shape, that is W14 shape...
Ag
= 17.7 in^2
rx = 4.39 in
ry = 2.57 in
A W10x60 column with the end conditions and bracing is shown in the figure. Determine the least theoretical bracing (maximum unbraced length) and its location about the y-axis, in order that the y- axis to not control the strength of the column. Also determine the design compressive strength (LRFD) and allowable compressive strength (ASD) for these end conditions (and effective lengths). Use Fy 50 ksi. Also, use the...
design an axially loaded short round spiral column to support an axial dead load DL=X an axial live load of LL=Y pg=0.02 as first trial fc=21 mpa fy=420mpa fyt=420 mpa X=1500 KN Y=1750 KN by using ACI 318-14 and ASCE equations
A HSS 12x 8 x % with Fy 46 ksi is used as a column member. The length of the member is 15 feet. Both ends are pinned, and there is an additional support against the weak axis buckling at a point 6 ft. from the top (Fig. P3). Determine the design compressive strength of the column for LRFD. 15' y-axis x-axis Fig, P3
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roblem IV A preliminary design results in a W12 x 96 for Columns BE and HK in the structure shown below. Frames ADGL, BEHK, and CFIJ are moment frames. Dead load is 110 psf and live load is 95 psf The results obtained from an approximate first order analysis for column BE are also shown below teral Deflection (A) al 26.5 kip 23 kip 10 kip...
Problem 4: Determine if the 87/4 x 15-inch cross section for the column shown below is sufficient to resist the axial loads given below using ASD methods. The column is manufactured using axial combination 2 and is a DF glulam. The column is a pinned-pinned end column (i.e., K = 1.0), the moisture content is 11%, and the temperature is in the normal range for occupancy. D = 20 k L = 40 k L = 22 ft L =...