slickdeals
Structural
Folks,
I have an interesting problem at hand. A canopy was designed too short and it needs to get extended. The original canopy was a cantilevered truss. We are now adding a support close to the 2/3 point of the truss and attaching/extending a curved W12 to form the new canopy. See attached section.
My questions are as follows:
1. I am going to calculate wind loads in a myriad of ways (open building, overhang, parapet etc etc) and determine an optimum number to use. Any suggestions?
2. The member is architecturally shown to be a bent the hard way to an outside radius of 7'-0". On first thoughts, it appears to be too tight and may not even be possible to be bent. Any additional info?
3. If the beam can be bent, how much residual stress will be built into it and how much will be available for design? The downforce will be opposite to the residual stress, but the uplift will induce more stress in the direction of the bending.
I have an interesting problem at hand. A canopy was designed too short and it needs to get extended. The original canopy was a cantilevered truss. We are now adding a support close to the 2/3 point of the truss and attaching/extending a curved W12 to form the new canopy. See attached section.
My questions are as follows:
1. I am going to calculate wind loads in a myriad of ways (open building, overhang, parapet etc etc) and determine an optimum number to use. Any suggestions?
2. The member is architecturally shown to be a bent the hard way to an outside radius of 7'-0". On first thoughts, it appears to be too tight and may not even be possible to be bent. Any additional info?
3. If the beam can be bent, how much residual stress will be built into it and how much will be available for design? The downforce will be opposite to the residual stress, but the uplift will induce more stress in the direction of the bending.