http://www.homebuildingandrepairs.com/framing/index.html Click on this link for more information about building design, home renovation and roof framing. You can use this formula for figuring out complicated 90° angles, while you’re building, remodeling or constructing a house. The Pythagorean theorem is one of the most helpful math formulas that a carpenter or construction home builder will ever use. Watch this video to learn more and don’t forget to visit our website today.
Thanks for the video in Lehman terms. Much appreciated
i like this formula and i use it dont listen to these harry homemakers its a good video
somewhat helpful? You assumed a 10 step, but I dont think an assumption helps? What if the deck is 10 ft high or 8 ft high? Would that not change the length of the lumber?
Just for those who might be confused, at the end he said that if you multiply 10 times 12.5", that would give you a 12 1/2 foot board, but it wouldn't, it would give you a 10 and almost a 1/2 foot board. 10 x 12.5 inches = 125 / 12, (converting inches to feet) = 10.41666 feet or 10' 5". How I got the 5" from 10.41666 is that I just took off the whole number, the 10 feet, then multiplied what was left, the decimal, by what it was divided by originally, 12. And we get 5.
30 years, but if you have a better way, let's see it.
I'm not about to suggest that this is the only way to figure out the length of your roof rafters, stairs or other construction angle measurements. As far as nobody doing this, I have to disagree, because I still use it and probably always will. Anyway, your comment is appreciated and you do have a good point.
Nobody actually does this in construction. Yes the Pythagorean Triangle Equation does relate to 90deg triangles but in practice it has nothing to do with cutting stringers, birdsmouths, ridge cuts, etc.
Once you know the run & rise, a framing square / speed square will do the rest for you.
You can use this method to figure practically any height of a roof. What exactly are you having a problem with? If you're having a problem with the video or having a difficult time figuring out how it works, maybe I can make another video, but you'll need to tell me exactly what you're having a problem with.
can u explain how to find out rafters when working whit different height
I'm sorry I responded so late, sometimes I don't get to see every comment, but I do have a website on stair building that is extremely helpful, however I'm pretty sure you needed the information a while ago. Anyway, go to (stairs4u) dottttt com.
you can tell by his hands hes has alot of work knowledge.. Contractors will understand
Sr. can you please explain to me how you calculate stairs when you have a certain length like if i only had a certain area for the stairs like a certain starting point on the ground
and a certain ending on the top platform please thaxz
@pelon22 Use a framing square
@TheFred1952 It wasn' suppose to.
you had me going there for a second because you equation at the top did not contain the sq root symble
your handwriting looks exactly like mine. you must be a genius as well.
thanks! that is so helpful!!
@pelon22 I will do my best.
can you post a video on how to figure out main rafters an jack rafters without a calculator?
What a great clip, you explained it really well. Thanks