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Old 08-12-2010, 10:01 PM   #31
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has anyone done this homemade trusses


1/2 " cdx and 2 1/4" gun nails, good urethane adhesive. Do not skimp on gusset size, plywood is cheap. I've used 1/4 and 3/8 ply for small shed trusses and 1/2" will hold fine but do both sides of all common trusses. The bottom chord is in tension and is supported by hanging from the rafters above via the "v" or "w" internal bracing. Also consider snow slides really well off that metal so snow load is usually light. I've build many sheds and several pole barns, all are fine...we don't need those permits or inspectors for AG buildings in MD.

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Old 08-13-2010, 05:20 PM   #32
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I spoke with my fathers buddy today, he works for an engineering and survay company and my dad works on all there company cars and trucks and most of the employees cars so I knew he would help me......well I told him what my plans where told him I was copying a truss and making my own gussets and he said that what I did on my garage......make sure the wood is dry all your cuts and angles sit flush to each other when you lay them out......use a good glue and nail them but dont over do it and use acouple of deck screws to help keep the plywood tight. He told me he only used plywood on one side but both side is good to but dont make them to big cause then your adding bad weight......well thats all I got right now but I am still looking ideas....I'll keep you all posted
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Old 08-13-2010, 05:53 PM   #33
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has anyone done this homemade trusses


The metal gussets at the box stores are not structural. You cannot get the real ones, they are for truss companies that pay large sums of money for the software, like from Mitek.

28' long trusses, I would caution against personally making them. I'm not even sure why you would be going this route since rafters would be way easier, way cheaper, and nothing to do with plywood gussets or anything.

I'm going to guess it is because you don't quite know how to cut a rafter, or maybe just in this situation...which is OK. You can lay the board right up against the truss and mark it out just as you would a truss. You would end up with a small beam in the mid span for your ceiling joists and may be able to create some room for some storage.

Though I would highly suggest a friend, a buddy, the local lumber yard....anyone who might be able to take a peek and give you an OK.

If you go with the truss method, get the PL adhesive, the one in the yellow and red tube. It more than likely is not going to be at HD, but will be at your local lumber yard. Gussets should be at least 12"x12" and make sure you don't miss any surface area with the glue.
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Old 08-13-2010, 06:00 PM   #34
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framerman, at this size a rafter system would be way cheaper? I thought the whole point to the truss was that it was cheaper?
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Old 08-13-2010, 06:29 PM   #35
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It all depends on the way you look at cheaper. You are going to spend an immense amount of time putting glue and gussets all over the place. You could throw a midspan beam 90 to the ceiling joists, post up the ridge, post mid span bracing for the rafters and be code compliant.

The material for trusses is machine stress rated. If the OP checks the lumber stamp on the one truss he has, there should be some markings like "1500fB" on the top chord. If that is the case, a 2x4 you get at the lumber yard does not compare to the structural qualities of the truss.

The webs of a truss is usually regular dimensional lumber that you and I can get just about anywhere. It's the machine rated material that is next to impossible to get.

Does the OP have an idea of what the snow loads are?
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Old 08-13-2010, 07:22 PM   #36
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I built my shop which was 32X40, and made my own trusses and had no problems at all. I used 1/2 plywood gussets somewhat over sized so I could get a good nail spread. It is still standing after 18 years, I roofed it with tin with the trusses on 32 inch centers, 2X4 lath 24 inch on center 5 and 12 pitch.
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Old 08-14-2010, 01:35 AM   #37
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I am going to try to make this short and sweet since I am very hungry and very drunk.........the whole reason why I posted this in the beginning was to see if anyone has any new plans behind plywood gussets and from what I have seen the answer is no. I am building a 28' x 26' garage for one car or truck and for storage and my wood shop.....so thats 26' x 12' for my truck and 26' x 16' for me to hide from the old ladie, now I can build my truss for under 400.00 bucks thats half of what the truss factory wanted to sell them to me for.......you going to build rafters cheaper than that, and I dont need extra storage....i have learned from my father and from other older men If you have to get out a ladder to stick something some where you are prob not going to get the ladder out to get it back....I dont want to be climbing up and down to get stuff.....and for you John Wayne......I am trying to keep the pitch as low as I can because I like view behind my house I do not live in the country so what little view I got I want to keep and all I got is time I am going to built this garage pretty much by myself and as I am waiting for concrete to get hard and everything else I can be building my trusses and by the wat who else do you want me to have look at these, an engineer drew up the plans I am building the gussets the way an engineer told me to and none of my buddies are smarter than me why do you think im on here.....my friends dont even know how to read a tape and I can cut a rafter just to let you know and we are way passed the metal gusset thing, that ended on page one i think.....so I am going to recap and I am sorry I was going for short and sweet but it happens.....looking for new news on plywood gussets... I got everything else under control......P.S. Is that you John Wayne is this me
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Old 08-14-2010, 11:09 PM   #38
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Man I just read what I wrote last nite and I should really use spell check when I'm drunk......sorry if I offended anybody..........
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Old 08-15-2010, 08:48 AM   #39
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It's all good. I hope your trusses go together well.
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Old 08-15-2010, 12:19 PM   #40
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pp. #112: http://books.google.com/books?id=_CP...age&q=&f=false

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Old 08-16-2010, 12:02 AM   #41
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ole jim you got any pics of your trusses.........thanks gary that was more about rafters from what I seen but it did show good nailing patterns.....here is something I found I thought it was pretty cool the report was from a few years ago but it was good let me know what you guys think......http://www.fpl.fs.fed.us/documnts/fplrp/fplrp444.pdf
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Old 08-17-2010, 08:55 PM   #42
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I cant believe nobody commented
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Old 08-17-2010, 09:38 PM   #43
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Nice! Now you know the best glue, plywood and nails.... I thought the nails had more to input.... pp 18 is sweet and a 15 year time warp, We all paid for that fed test! Watch the grade and the knots.......
Good find.

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Old 08-17-2010, 10:14 PM   #44
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Quote:
Originally Posted by Chriscr View Post
ole jim you got any pics of your trusses.........thanks gary that was more about rafters from what I seen but it did show good nailing patterns.....here is something I found I thought it was pretty cool the report was from a few years ago but it was good let me know what you guys think......http://www.fpl.fs.fed.us/documnts/fplrp/fplrp444.pdf
I didn't have a digital camera back then and since we had built quite a few buildings like that it just didn't seem worth taking a picture of. grin

The article is saying the same way we built ours. We made sure we never had a cross strut at a break in the 2Xs.
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Old 08-17-2010, 10:48 PM   #45
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I thought it was cool, it tells you everything. I'm sure the metal plate are better now then they were 35 years ago but the glue and plywood in the tests seem to beat them in alot of those tests.

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