If the roof has heavy concrete tile, not in an earthquake area and a 4/12 pitched roof, do collar ties do anything? Other info says collar ties are for upward movement, wind, or maybe earthquake areas... The house has 2x6 ceiling joists, 2x6 rafters spanning 9 ft. horizontal.
Right not much uplift of the roof is super heavy. However collar ties, ridge straps or gusset plates are required for typical A frame roof construction. I'm not an engineer, but I would assume there are ways around it, but it's relatively cheap to have collar ties installed
What’s the maximum length going up the rafters can a rafter tie be nailed? I need to raise the rafters in my garage about 3 feet to allow clearance for a 4 post car lift.
The 2018 IRC for example, indicates that rafter ties must be within the lower 3rd if the rafter span. Anything more than that and a structural ridge would be needed, or an engineered design. Keep in mind that prescriptive codes require that if you lift the rafter tie off of the bottom of the rafter (at the top of the wall plate) then the rafter needs to also get larger. There is a multiplyer chart in the IRC for this.
Keep in mind that rafter ties are also required. So if we are talking about a roof that sits over a room with full wall heights you can't forget the ceiling joist/ rafter tie requirements
Would it be ok to replace a collar tie with a knee wall support? I have one annoying collar tie in my attic right next to the access that I would love to get rid of.
one of the best explanations for the purpose of joist that I've seen. Thank you!
Thanks! Visuals are always best
@@homedetectiveguy4647 Yeah but you actually made a kinetic model that worked in both 2 and 3 dimensions. Gained my sub.
If the roof has heavy concrete tile, not in an earthquake area and a 4/12 pitched roof, do collar ties do anything? Other info says collar ties are for upward movement, wind, or maybe earthquake areas... The house has 2x6 ceiling joists, 2x6 rafters spanning 9 ft. horizontal.
Right not much uplift of the roof is super heavy. However collar ties, ridge straps or gusset plates are required for typical A frame roof construction. I'm not an engineer, but I would assume there are ways around it, but it's relatively cheap to have collar ties installed
The best I’ve seen!!
I thought they're called tie beam and collar beam.
Can a rafter tie be slopped, or does it have to be striaght like in your demonstration
What’s the maximum length going up the rafters can a rafter tie be nailed? I need to raise the rafters in my garage about 3 feet to allow clearance for a 4 post car lift.
The 2018 IRC for example, indicates that rafter ties must be within the lower 3rd if the rafter span. Anything more than that and a structural ridge would be needed, or an engineered design.
Keep in mind that prescriptive codes require that if you lift the rafter tie off of the bottom of the rafter (at the top of the wall plate) then the rafter needs to also get larger. There is a multiplyer chart in the IRC for this.
Can a rafter tie be brought up off the plate to raise the celing a little?
A ridge straps is a perfect alternative to collar ties. Then you can lift the ceiling up to the ridge if you desire
Keep in mind that rafter ties are also required. So if we are talking about a roof that sits over a room with full wall heights you can't forget the ceiling joist/ rafter tie requirements
The background music is an absolute sound interruption. I prefer to hear you. Turn the music down on your next video.
Would it be ok to replace a collar tie with a knee wall support? I have one annoying collar tie in my attic right next to the access that I would love to get rid of.
Ridge straps are an alternative and code compliant option if you are working in a town that has adopted the IRC
I gotta dump