The loft floor joists are faced nailed through the joist end and into the vertical stud where they meet against one another. If the finish roofing was not yet installed there are metal straps that can be nailed over the rafters from the outside or over the sheathing at the rafters on the outside. Ditto on rafters.īut to answer the question about collar ties. The loft floor joists are face nailed into the studs? If the nails pass through the stud clinching them over greatly increases their holding strength. If box type add a couple) on the steep side would do for both while the shallower pitch should have (maybe) 4 for each. How many nails were used to secure the loft joists to each wall stud and the rafter bottoms to the wall plate? Three 16D common nails (not box nails which are what most air nails are. I have a bunch of 1/2" plywood left over that I'll glue and screw. I'll throw some collar ties up there to shore things up. The greater the length of that knee, the greater the possibility of horizontal outward forces from the rafters causing a stud to split, especially if the studs have been notched to inset a ledger. That stub, what is referred to as a kneewall by most, can be a problem area. The important thing is you do not have a stub of a wall stud sticking up a couple feet or more as many have done. The other roof half is still fairly steep. ![]() The very steeply pitched side of the roof will have very little horizontal component to the force on the wall. ![]() In your case though, as I can not see any stub of a wall stud sticking up above the loft floor you should be fine. Technically rafter ties should be on top of the wall top plates, not below the top plates. Their sole duty is to hold the peak framing together at times like that.Ī rafter tie holds the lower ends of the rafters together and hold the wall tops, keeps the wall tops from spreading. They can be a boon if and when the winds pick up to high numbers. # Posted: 1 May 2012 00:43 - Edited by: MtnDonįirst, collar ties, located up snug near the peak (or at least in the upper third) serve to hold the rafter points together. Thank you for your expertise, there is a reason I directed this thread to you as I value your input. With that said, do you think I should install collar ties at the top of the roof rafters where they meet the ridge peak beam? The reason I mention this is that with this type of second floor construction, I find it hard to believe that the walls will be pushed out by the load of the roof because each joist is tied into each stud of the either walls. Sort of a hybrid balloon frame type construction. Then underneath those floor joists on either wall, I've run a 2X8' beam to support either end and affixed the beam to the studs. The loft floor is constructed of 2X8's 16OC that are actually mounted underneath the wall's top plate and affixed to the stud with horizontally driven ringed shanked nails. ![]() The roof is fairly steep and the actual angle is 85%. The "long roof wall" is 12' and follows the same routine at the other side. The "short roof wall" is 8' long which sits on the top of the 2X4" wall top plate with a birds mouth notch. You'll notice the roof rafters are 2X6, 16OC and built in a salt box roof style. Would you please take a look at my latest video, about half way through I'll visit the loft. Small Cabin Forum / Cabin Construction / A ? for MtnDon (should I install roof collar ties) Forums - Register/Sign Up - Reply - Search - Statistics.
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