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Are these hurricane ties?

D

dvo

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Raleigh,NC
Anyone know what these are for?

Everyone is getting off track on the rafter stuff so I got more pictures without the odd framing. This is not my house but new construction I see in every house in NC.
 

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Jeff C

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Rafter ties or braces since the floor joist are perpendicular to the rafters. The rafters are spliced at this point. The extra 2x4 plates (along with maybe a ripped sheet of osb?) are to line up the top and bottom half of the roof so everything is in the same plane.
 
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firebirdparts

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It looks like somebody sawed the rafters off randomly and I feel shocked even suggesting that. Then they tacked up that stuff to try to get new ones installed. They were saving the birdmouth/overhang part of it just to make it easier.

Maybe a tree fell on the house. That would sort of explain it.
 
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M

mv213

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Dallas, OR (the OTHER "Big D")
firebirdparts said:
It looks like somebody sawed the rafters off randomly and I feel shocked even suggesting that. Then they tacked up that stuff to try to get new ones installed. They were saving the birdmouth/overhang part of it just to make it easier.

Maybe a tree fell on the house. That would sort of explain it.
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That’s the best explanation, I think. It would explain it, but it’s still **** work.
 
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mcbane

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That doesnt look like it would be good for any significant snow or wind load. If your whole attic is done that way you should have a local engineer familiar with snow and wind loads in your area take a look at it and design a repair.
 
3

3onthetree

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Nov 14, 2018
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191
Those are rafter ties. If you don't have them then your roof will push out at the rafter heel. Typically, these kickers are only installed this way when your ceiling joists run perpendicular to the rafter direction. Code requires 2x4 and at each rafter to tie the roof into the ceiling diaphragm.

However in the 3 different examples, you are forced to use the kickers no matter which direction the ceiling joists run, because the builders have chosen to build the floor platform first, then set the roof up on top of that. So by doing that the ceiling joists cannot connect directly to the rafters to prevent the pushout. So they used kickers. But with that, there are certain fastening requirements, like say (4) 16d's into these ties, that none of these examples look to meet. They would have been better choosing a balloon framing method.
 
B

billconner

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Thousand Islands NYS
3onthetree said:
Those are rafter ties. If you don't have them then your roof will push out at the rafter heel. Typically, these kickers are only installed this way when your ceiling joists run perpendicular to the rafter direction. Code requires 2x4 and at each rafter to tie the roof into the ceiling diaphragm.

However in the 3 different examples, you are forced to use the kickers no matter which direction the ceiling joists run, because the builders have chosen to build the floor platform first, then set the roof up on top of that. So by doing that the ceiling joists cannot connect directly to the rafters to prevent the pushout. So they used kickers. But with that, there are certain fastening requirements, like say (4) 16d's into these ties, that none of these examples look to meet. They would have been better choosing a balloon framing method.
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So, those kickers and 2x4 plate are in tension and tieing rafters to the floor plate?

A floor at mid rafter span is a bit unusual in my experience - like in A-frames I suppose - but I guess doable and I can see the reason for the above floor top plate and birds mouth. Also insulation nearly full rafter depth. The floor being mid span of rafters forces the perpendicular joists, supported on usually non-load bearing gable end walls. A full building section would explain a lot.

Tried to find a picture, a rectangle plan with ridge the short dimension and 2 or even 3 floors above the eave/ top of first floor walls.
 
OP
D

dvo

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Joined
Dec 25, 2012
Messages
48
Location
Raleigh,NC
3onthetree said:
Those are rafter ties. If you don't have them then your roof will push out at the rafter heel. Typically, these kickers are only installed this way when your ceiling joists run perpendicular to the rafter direction. Code requires 2x4 and at each rafter to tie the roof into the ceiling diaphragm.

However in the 3 different examples, you are forced to use the kickers no matter which direction the ceiling joists run, because the builders have chosen to build the floor platform first, then set the roof up on top of that. So by doing that the ceiling joists cannot connect directly to the rafters to prevent the pushout. So they used kickers. But with that, there are certain fastening requirements, like say (4) 16d's into these ties, that none of these examples look to meet. They would have been better choosing a balloon framing method.
Click to expand...

Ahh that make sense now. Thanks for the very good explanation.
 
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