You might want to get in contact with Dr. Michael O'Rourke. He is a professor at Rensselaer, and a snow load expert for ASCE. A few years ago, I listened to him present a webinar titled Advanced Snow Loads. In it he discussed the snow loading of canopies. He stated that canopies should be...
Does anyone have information on a product called Insuldeck? It was used on a roof built around 1981. A web search shows that there are two current companies selling a product by that name, but neither one matchs the product used on my project. The Insuldeck used on this project appears to be a...
When there is wind uplift on the truss the entire bottom chord is in compression. The compression starts where the first web member connects to the chord and reaches a maximum at mid-span. My question is how do you design a compression member that has no bracing in one plane? Since there is no...
The ends are not braced. That is the problem. If I had one run of bridging at each end of the truss, I would be quite comfortable with the design, but the owner and architect doesn't want any bridging.
I am being asked to design a custom truss with a completely unbraced bottom flange. The dead load on the truss is so light that there is a net uplift with wind load. This puts the bottom chord in compression. I don't like this condition, but I would like to have more than "I don't like it" for a...