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Steel Welds Design Problem 1 - Calculate Fillet weld size for a welded connection:
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An eccentric load is applied to the flange of a W14 x 82 column as shown.
The bracket plate transfers the dead load = 15 kips and live load = 25 kips as shown.
What is the minimum weld size needed if E70XX electrode is used?
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1. From the steel welds submenu open the weld group properties submenu and then open the section properties calculation for a C-shape weld group, WG5Properties.aspx.
Input the "Title" of the calculation, the "Designer/Checker" information, enter the variables and click on the "Calculate" button and read the results.
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2. Next, from the steel welds submenu open the weld moment load calculation, EccentricityEMWeld.aspx.
Input the "Title" of the calculation, the "Designer/Checker" information, enter the variables, click on the "Calculate" button and read the results.
The resultant shear force, ru, on the weld is 6.038 kips/in. The required shear strength of the weld is 28(6.038) = 169.064 kips.
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3. Finally, from the steel welds submenu open the fillet weld strength calculation, FilletWeldStrength.aspx.
Input the "Title" of the calculation, the "Designer/Checker" information and enter the variables. To start the trial and error check for strength, try a 7/16" weld.
Click on the "Calculate" button and read the results. The maximum shear strenth, Ru, of the weld is 181.903 kips which is greater than 169.064 kips.
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4. Summary
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Use a 7/16" fillet weld with a maximum shear strength, Ru, of 181.903 kips which is greater than the required shear strength of 169.064 kips.
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