Luke McFadden
07-22-2007, 9:13 PM
Hopefully this won't be to confusing of a picture to imagine.
So I have a 4 1/2' 2x4. At each end, 3 inches in I have a Strongtie Double Shear Joist hanger holding a 3.5" 2x4. The JH is attached to the long 2x4 with 4 1" wood screws, and then the short 2x4 is attached via 2" woodscrews (which with these JH's go in at 45).
I have two of these 4' 2x4's. One mounted 6" off the ground, and the other 1' down from an 8' ceiling. Attached to this is a 4'x8' frame. So if I set this frame up against the mounted 4.5' 2x4's, the short 2x4's in the JH's fit right inside of the 4'x8' frame. I drilled 3/8" holes and bolted everything together.
So, my question is how strong is this? I'm worried about the JH's. I'm considering putting a top T-plate connector to add some strength.
The load will be between 150 and 350 pounds. Most of the time, the load will be straight down, but the frame will also angle outward from the top section with 2x4 extension, and the maximum angle of the frame would never exceed 35-40 degrees, and would mostly likely be around 10-20 degrees. So, when the wall is at an angle, I'm concerned about the force on the joist hangers, I don't want the small 2x4 to pull out. Would top plates be enough to help this? There are 4 total contact points.
I'm tried thinking of a better way to do this, as far as attaching the small 2x4 pieces to the 4.5' 2x4 section, but I wouldn't. It feels really solid right now, but I've yet to bring it to an angle.
I'd appreciate all thoughts on making this better, and numbers on the strength of the joist hangers (rough numbers are totally fine).
I'm not worried about the 4.5' 2x4 coming out of the wall (3 3/8x3" lag bolts).
Thanks!
L
So I have a 4 1/2' 2x4. At each end, 3 inches in I have a Strongtie Double Shear Joist hanger holding a 3.5" 2x4. The JH is attached to the long 2x4 with 4 1" wood screws, and then the short 2x4 is attached via 2" woodscrews (which with these JH's go in at 45).
I have two of these 4' 2x4's. One mounted 6" off the ground, and the other 1' down from an 8' ceiling. Attached to this is a 4'x8' frame. So if I set this frame up against the mounted 4.5' 2x4's, the short 2x4's in the JH's fit right inside of the 4'x8' frame. I drilled 3/8" holes and bolted everything together.
So, my question is how strong is this? I'm worried about the JH's. I'm considering putting a top T-plate connector to add some strength.
The load will be between 150 and 350 pounds. Most of the time, the load will be straight down, but the frame will also angle outward from the top section with 2x4 extension, and the maximum angle of the frame would never exceed 35-40 degrees, and would mostly likely be around 10-20 degrees. So, when the wall is at an angle, I'm concerned about the force on the joist hangers, I don't want the small 2x4 to pull out. Would top plates be enough to help this? There are 4 total contact points.
I'm tried thinking of a better way to do this, as far as attaching the small 2x4 pieces to the 4.5' 2x4 section, but I wouldn't. It feels really solid right now, but I've yet to bring it to an angle.
I'd appreciate all thoughts on making this better, and numbers on the strength of the joist hangers (rough numbers are totally fine).
I'm not worried about the 4.5' 2x4 coming out of the wall (3 3/8x3" lag bolts).
Thanks!
L