Hi,
I am looking for the code reference if any or the best practices to define the weld for beam web to web joint (two beams connected at 90 deg.)
Considering this beam to beam joint is primary/ critical and considering flange to flage CJP,for web to web joint my understanding is instead of over weld design to have CJP , both side tothe web, fillet weld should work. However refering to AWS D1.1 my understanding is the minimum fillet speciffied in AWS is good enough to considered for this web to web both side fillet? Is this assumption right? If not should I consider fillet side =75% of web thickness on each side of web(assuming both beam are same type and web thickness are same), For ex. if web thickness is 20mm then fillet size of 15mm each side of the web? or this 75% should be in total, means 35% fillet on each side (same ex. 7.5mm on eachside of web?
My interpritation is that this 75% on each size is too much and over design. oversize of weld will impact on welding and NDE cost, number of runs will increase, increase in risk for weld defects, and also overall weight of structure will increase in total. from weld optimisation point of view wht is the best approch to follow rather simply follow the 75$ thumb rule?
I am not able to get any code reference for this 75% consideration what my superier is asking to follow as a thumbrule. is thjis specified in any code?
I have attached the image for beam to beam joint and also another image for the generic T joint between two plates. my doubt remains the same for plate to plate fillet weld as well. Shoud I consider 75% on each side or total 75% so approx 37% fillet on each side?
Thanks in advance and looking forward to get the valuable suggestons.
PrashantB
I am looking for the code reference if any or the best practices to define the weld for beam web to web joint (two beams connected at 90 deg.)
Considering this beam to beam joint is primary/ critical and considering flange to flage CJP,for web to web joint my understanding is instead of over weld design to have CJP , both side tothe web, fillet weld should work. However refering to AWS D1.1 my understanding is the minimum fillet speciffied in AWS is good enough to considered for this web to web both side fillet? Is this assumption right? If not should I consider fillet side =75% of web thickness on each side of web(assuming both beam are same type and web thickness are same), For ex. if web thickness is 20mm then fillet size of 15mm each side of the web? or this 75% should be in total, means 35% fillet on each side (same ex. 7.5mm on eachside of web?
My interpritation is that this 75% on each size is too much and over design. oversize of weld will impact on welding and NDE cost, number of runs will increase, increase in risk for weld defects, and also overall weight of structure will increase in total. from weld optimisation point of view wht is the best approch to follow rather simply follow the 75$ thumb rule?
I am not able to get any code reference for this 75% consideration what my superier is asking to follow as a thumbrule. is thjis specified in any code?
I have attached the image for beam to beam joint and also another image for the generic T joint between two plates. my doubt remains the same for plate to plate fillet weld as well. Shoud I consider 75% on each side or total 75% so approx 37% fillet on each side?
Thanks in advance and looking forward to get the valuable suggestons.
PrashantB
