A bar d=6 inches wide is welded to a column as shown below The load P (yQ) is 11

Question

A bar d=6 inches wide is welded to a column as shown below The load P (yQ) is 110 kips applied through the centroid of the weld group, the filler metal is E6012, the horizontal welds extend along the entire overlap length L_0 = 9 inches and the vertical weld on the left edge of the bar extends the entire width of the bar. Using LRFD criteria for phi R. what is the weld size w rounded up to the nearest 1/16th inch (ie for a 5/16th inch weld size the answer is 5). Assume neither the bar nor the column control the design.

Explanation / Answer

Bar diameter = 6in

Load , P = 110kibs.

Using LRFD criteria,i. e.

Ru< Fi Rn

Where Ru =Efi Ri

Also,we know,

Fi = Resistance factor.

Y = Load factor for the type of load.

R= Load( dead or Alive),

Ru = Factored Load

Rn = Nominal load.

Therefore,by placing the values we can easily find the design considerations for Bending Moment.

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