I have seen similar questions online, but not my situation specifically. I have an attached garage with 2x6 attic joists and 2x6 roof rafters. The joists span
20' and are 16" on center. '. Each joist is connected by a vertical 2x4 to the roof rafter above it positioned about 4' from the wall. There is a 1/2" plywood sub-floor on top of the joists. I want to finish this space with drywall walls and ceiling and also a drywall ceiling in the garage (under the joists). I know the 20' span is well over the limit for a 2x6, but was wondering how much the vertical 2x4's help compensate for that. Would sistering another 2x6 to each joist be sufficient support for the finished room above? I have attached pictures.- posted
8 years ago