connection design
connection design
(OP)
Hi fellows
For the portal frame design, some times the case is the rafter weld to the end plate and bolt to the column. But how about if the case is the column weld to the plate and bolt to the rafter, can i just rotate it and do the same design as the first case?
Thank you for you time
For the portal frame design, some times the case is the rafter weld to the end plate and bolt to the column. But how about if the case is the column weld to the plate and bolt to the rafter, can i just rotate it and do the same design as the first case?
Thank you for you time






RE: connection design
It is possble the connection may be adequate for both but you should definitely run thru the numbers to be certain.
RE: connection design
Jike is correct. Note also that the rafter is usually bolted to the column as the extra depth of the beam haunch assists in the bolt lever arm. To do the same at the top of a column is possible but the haunch orientation is not so good for the design on the rafter.
RE: connection design
To my understanding, you question is whether the bolting interface can be at column side OR at top of column. Both exist as I observed. “At Top” is good to prevent clash of purlin to connection plates and save the concern of shear at the connection. “At Side” is better for connection (as pba indicates) if the rafter is haunched but not the column. In industrial frames, columns usually to go through since the column extension is required from time to time.
RE: connection design
RE: connection design
yes, that is true. So how should I design a column cap plate? Any example to follow?
Thx very much
RE: connection design