- Weight limits are usually the first thing inspectors zero in on, especially with older structures.
- Drainage and waterproofing come up a lot too, but it really depends on the city. Some just want to see a basic plan, others want full specs.
- Did they ask you for any kind of wind uplift calculations or details about root barriers? That’s been a sticking point in a few places I’ve worked.
Funny you mention wind uplift—our city inspector was obsessed with that last year when we did a retrofit on a 70s building. We had to get a structural engineer to sign off on every detail, down to the fasteners. Root barriers were less of a headache, but drainage was a saga... three rounds of revisions before they were happy. Seems like every city has its own quirks, but weight and wind are always at the top of the checklist for us.
Weight and wind are always a nightmare when dealing with retrofits, especially on older buildings. On one of our projects, we had to beef up the joists just to satisfy the city’s wind uplift requirements—even though it barely gets breezy here. The root barrier was straightforward, but drainage turned into a back-and-forth with the city engineer about overflow scuppers. Sometimes I feel like local codes are just a moving target... but I’d take that over another round of surprise wind calculations any day.
On one of our projects, we had to beef up the joists just to satisfy the city’s wind uplift requirements—even though it barely gets breezy here.
That’s wild about the wind uplift—my city barely checks for that, but they’ll nitpick drainage for weeks. When you say “beef up the joists,” did you have to open up the ceiling from below, or could you reinforce from above? I’m curious how disruptive it actually was.
Funny how every city seems to pick their own code “hill to die on.” Where I am, wind uplift is a big deal—maybe overkill, but I’ve seen some surprising gusts do real damage even in spots that aren’t supposed to be windy. That said, I get why it feels excessive if your area’s usually calm.
On reinforcing joists, I’ve actually run into issues when trying to do it from above. It’s less disruptive for tenants, but you’re limited by what you can tie into unless you have access to the ends or can sister full-length members. In one project, we had to open up the ceiling from below because the inspector wanted visual confirmation of hardware and fasteners—total pain, especially with finished spaces.
Honestly, sometimes I wonder if a more robust drainage system would do more good than beefed-up framing in certain climates. Water intrusion has wrecked way more roofs in my experience than wind ever has... but codes are codes.
