Snow Load Calculation Review

Job ID: 39832293

Budget: $250 – $750 USD

I have already sized the Douglas Fir purlins for a 24 ft × 84 ft tractor shed that qualifies as an agricultural building in my county, so no stamped drawings are required. What I need now is a fresh set of structural-engineering eyes on my snow-load calculations—nothing more, nothing less.

You will receive:
• My current load-calculation worksheet (google sheets)
• My SketchUp drawn plans

Your task is to verify (or correct) the math and underlying assumptions, then send back a concise written summary confirming whether the selected Douglas Fir members are adequate or, if not, what adjustments are necessary. Hand calculations, quick analysis in RISA or similar software, or your preferred method are all acceptable as long as the logic is clear. I’m not looking for sealed drawings—just professional confirmation and any recommended tweaks so I can proceed to construction with confidence.