Answer
Jul 30, 2021 - 07:24 PM
Our narrowest Joist Reinforcers are 16" wide, and won't fit into the 14.5" space you have between the joists.
Also, this sounds like a condition on a Rim Joist or Rim Beam. If this is the case, Rim Joists typically have continuous support along their length and aren't subject to the hole and notch guidelines as are open span Joists between load bearing walls or columns. This doesn't mean that an inspector won't flag it because, it is referred to as a "Joist". But technically, they shouldn't because they are two different things, subject to different load conditions. For Rim Joists, it is a crush load, and large holes can be an issue. The Building Code mentions the use of steel to reinforce holes in plates and Rim Joists. My suggestion is that you consult a local engineer and code official to see what they recommend.
Also, this sounds like a condition on a Rim Joist or Rim Beam. If this is the case, Rim Joists typically have continuous support along their length and aren't subject to the hole and notch guidelines as are open span Joists between load bearing walls or columns. This doesn't mean that an inspector won't flag it because, it is referred to as a "Joist". But technically, they shouldn't because they are two different things, subject to different load conditions. For Rim Joists, it is a crush load, and large holes can be an issue. The Building Code mentions the use of steel to reinforce holes in plates and Rim Joists. My suggestion is that you consult a local engineer and code official to see what they recommend.