10 ms·
I think it’s 4 over 1 here in the Seattle area. Concrete floor one with retail followed by 4 wooden floors of apartments, although that is changing to 5 over 2
by seanmcdirmid 2y ago
I think it’s 4 over 1 here in the Seattle area. Concrete floor one with retail followed by 4 wooden floors of apartments, although that is changing to 5 over 2 in the last few years. Developers love them because they are easier to build and maximize sellable space.
- astrange 2y agoThe numbers actually aren't floors, they're sections of the building code. 1 is nonflammable materials like concrete and 5 is most flammable but cheapest. (Pretty sure everyone thinks it means # floors though.) 4 is mass timber, which is a newer very promising material. The article mentions the airport used it, but you can build towers from it quickly, safely, and less chance of hearing your neighbors through the wall. https://timberlab.com/projects/heartwood https://timberlab.com/projects/heartwood
- seanmcdirmid 2y agoOh, that makes sense. Ya, 5 over 1 makes sense in that context. They just happened to be height/floor limited as well compared to a pure concrete/steel construction.