Weld with multiple loads

[McMichael05]

How am i supposed to go about determining if the weld can take these loads applied? There is the vertical shear and the horizontal axial load applied. See the attached pdf. Thanks for you help!

 

[McMichael05]

I guess what im asking is is it fair to find the capacity of the fillet weld and then compare it to the total sum of the loads applied? ie. 1.8+7.2=9k

 

[DrZoidberWoop]

The forces are not directly additive. Use Force=sqrt(axial^2 + shear^2). Then you could take the resultant force of the shear and axial and interpolate the C_weld value from AISC Tables 8-8. If you need a faster conservative answer, neglect the contribution of the horizontal welds and attribute the force resultant to the single vertical weld, probably without the directional strength increase. AISC eqn 8-1 (page 8-8 in 15th edition).