roof trusses

   / roof trusses #11  
So tell me how you knew where to put all the boards to make the truss. I thought that they require a specific design based on use and that if you get off a little one way or the other it would not have the strength required.
 
   / roof trusses #12  
Ozarker, when we built the trusses, we already had the subfloor laid for the house, so we laid out one truss in place on the floor, then used short scraps of 2 x 4 to lay on either side of each board and nailed them down; in other words we made a jig to place the boards in so that all subsequent trusses were exactly like the first one. We used 2 x 4 bottom cord and 2 x 6 top cord; quarter inch plywood plates on both sides of all joints, and a 4/12 pitch. After we laid out one and got everything cut right for that one, before we nailed it, we used those pieces to cut all the rest the same, so we did all the cutting one day and all the assembly the next day.
 
   / roof trusses #13  
But how did you figure out how to make the first truss? Before you set the jig to make all the rest the same?

Is there a program? Is there a book that tells you how to design the truss? Is there a set of math formulas used to determine the placement of the boards?

I am going to build a small shed with overhang for tractor parking and will probably do my own truss' as well. Been thinking about it and searching the net for info but keep hitting dead ends.
 
   / roof trusses #14  
Oops, sorrry about that, Ozarker. I see now that I misread the question . . . so now I don't have answer for you./w3tcompact/icons/laugh.gif My brother knew what he wanted to make with the first one 'cause he (and the other brother who was also helping us) used to be in the business of building houses in Alaska.
 
   / roof trusses #15  
Ozarker--how about buying one and using that as a template for making the rest?
 
   / roof trusses #16  
I suppose that would work. But I'm reeeeaeaaaaal cheap. If I can figure out how to figure it out, I will. /w3tcompact/icons/smile.gif
 
   / roof trusses #17  
Then just buy one, get your jig built and then return it. /w3tcompact/icons/smile.gif
 
   / roof trusses #18  
You sir, are a genius.

Reminds me of my neighbors. They get a space heater every fall from Walmart and return it every spring for a refund.
 
   / roof trusses #19  
<font color=blue>But how did you figure out how to make the first truss? Before you set the jig to make all the rest the same?</font color=blue>

First things first. You be nice to all the harv's in your life or lives!! Thanx for directing me here even though I'm sure the results aren't quite what you expected.

Go <A target="_blank" HREF=http://www.swansontoolco.com/swan4.html>here</A>. There you will see the 101 speed square with the little blue book. Then go to your favorite box store or local hardware and buy said animal making sure you get the little blue book.

Don't be intimidated by the concept of building a truss. It's just a thingy. The book will lead you into places you only dreamt you could ever go.

It's written for carpenters so you might be okay(/w3tcompact/icons/laugh.gif).

Seriously with the speed square and the book you'll know all you need to know and it really is simple.

BTW before the speed square the old carpenters had the magic with all those numbers you see all over a framing square. The speed square did to calculating pitches with the framing square what the caluclator did to learning multipication tables.
 
   / roof trusses #20  
I bought a speed square about a month ago. Figured it might be a good thing to have. Maybe I'll open the box and see what it says about trusses.

<font color=blue>I'm sure the results aren't quite what you expected.</font color=blue>

The results were precisely what I expected. I wouldn't have told you of this place if I didn't think your particular talents would be appreciated here. Not too many at the other place would even know what you were talking about but I knew the good folks over here would.
 

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