Unstiffened knee joint design
Unstiffened knee joint design
(OP)
How do you design an unstiffened moment knee joint?
These occur frequently in stair stringers such as shown in the attachment. So far I have found a method for rectangular hollow sections but not open sections.
These occur frequently in stair stringers such as shown in the attachment. So far I have found a method for rectangular hollow sections but not open sections.






RE: Unstiffened knee joint design
RE: Unstiffened knee joint design
For your example, I would calculate the flange forces and calculate the component which needs to be transferred into the web and design the web for that component of force. Similar to a bearing force.
RE: Unstiffened knee joint design
RE: Unstiffened knee joint design