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ProgrammingPE that is very helpful. Would the snow load factor 0.7, for flat roofs, then be interpolated? If the deck is at 8’, expected snow level above that is 4.4’. So, 0.7+(4.4/12.4)*0.3 = 0.81?

The project is in Truckee, California. I’ll look through their posted materials and if I can’t find anything on the load duration factor and the ground snow load reduction, I’ll try to get a hold of somebody at the building department or someone in the engineering or architecture field. Thank...

Thank you, driftLimiter. So, 0.7 factor applies and then add drift to that?

Hi, I’m working on a deck renovation and the snow load is extremely high. Ground snow load is 372 psf. Crazy, right? There’s a deck on the second floor, above the garage and the client would like to remove the center post supporting the deck so the snow plow can get in closer to the garage, in...

Chorasden, the overstress condition appears to be mostly from flexural stress in the bottom chord. In the load combo in question, the chord is in axial tension. Since it’s a rectangular section, the controlling stress would have to be tension from bending plus the axial tension, I believe. My...

Hi, I am working on a project, a residential remodel, where the clients would like to remove an interior wall which is located directly under the middle of the existing roof trusses. This mid-point is about as far from a panel point as it can be. The bottom chord appears to be 3 equal spans. The...

Again, thank you so much for the help! Your honest answers have given me much needed insight.

Thanks again, Pham and Josh! Pham, The chords are continuous across the joints, including at the node I placed for the support in the middle of the bottom chord. The webs are pinned at the ends. I did not consider any rotational stiffness from the webs. I could possibly take a look at that...

Thank you guys! Pham, I appreciate your thorough response. I will post the question in the general forum. I am attaching some model graphics as well. Spacing is 24" O.C.. combo 4 has 10psf Roof DL, 5psf Ceiling DL, and 10 psf Ceiling LL. All wood is specified Hem-Fir #1, in these models...

Hi, I am working on a project, a residential remodel, where the clients would like to remove an interior wall which is located directly under the middle of the existing roof trusses. This mid-point is about as far from a panel point as it can be. The bottom chord appears to be 3 equal spans...