an idea for boxing in duct work 80″ span
HOPEFULLY THE PICTURES I ATTACHED ARE INCLUDED.
Here’s the situation: a guy wants his basement finished. I need to box in the steel beam and duct work. There are two ducts side by side with about 1 1/2″ clearance between for 4′. The distance from steel beam to the edge of the duct is 80″.
I will install framing along the steel beam and duct work. For the tight 4′, I’m going to install a 2×6 above the beam and duct work and sister to the exisiting joists. I will put two eyelets on the 2×6 before doing this. Through the eyelets I will install suspened ceiling tie wire. I will drill and mortise the OSB panels to accept a hex head bolt. The tie wire will be secured to the hex head bolt by a washer and nut. The tie wire can then be pulled through the eyelets allowing me to raise the OSB. The tie wire will then be secured to an eyelet. Please look at the drawing, it will hopefully explain. This will result in a 40″ span.
The only weight on the OSB will be itself plus 1/2″ drywall or 5/8 if I decide to use instead.
Maybe I’ve had too much coffee today. Criticms or improvemnts welcome. Thanks