site built rafters for garage
site built rafters for garage
(OP)
Can somebody help me. I have built a garage with site built rafters. They are supported by two 14 foot 2x8s as the ridge. Yes there are rafters on each side of the seperate 2x8s. They have 2x6 collars on every rafters. All rafters are plywood gusseted both sides glued and nailed. There are stem wall supports at about 5' 7" these are also 2x6. These supports rest on 2x8 floor joists that span 13' 10 1/2" wich rest on a 10x12 beam. Do these rafters have to be engeneered.






RE: site built rafters for garage
RE: site built rafters for garage
Many localities will also follow building codes that specify construction details. You'd need to check with the local city or county building department to see what they require.
RE: site built rafters for garage
I suspect an engineer could review what you have in less than an hour.
RE: site built rafters for garage
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RE: site built rafters for garage
RE: site built rafters for garage
There is also the question how the overall structural system works, not just the member size. For example, are the rafters tied at the rafter bases or does the ridge have to serve as a true beam? If the ridge needs to hold the rafters up, is it properly sized.
Many unknowing house designers make the mistake of just throwing sizes at members without knowing how the system works. I have seem many houses with the walls pushed outward due to improper design approach.
Regarding Engineering, in our state, each town's local building official has the last word, so if there is doubt in his mind, whether the code requires an Engineer or not, you may be required to engage one if the Building Official says so.
I know of several who require all residential beams be Engineered even though the code does not require certain sized residences to have a Professional involved.