How To Calculate And Layout Hip And Valley Roof Rafters Using Math Formula And Framing Square

Roof Framing Ideas

[lisalaughter]

I seriously thank God for you....I want to learn how to build things properly but do not always neccesarily have the needed mentality for complicated explanations....although sometimes I wish I was sharper in that regard....you are a blessing to me and Im sure many other people....you are truly a roof a roof massage therapist or something akin to that....thanks, Lisa

[gregvancom]

I solved my problem with a little help from a viewer. Instead of 17 inches use 16.97 to make the math formula more accurate.

[Viral_MediaClips]

Awesome video glad I found this, learned a ton about laying out and calculating hip and valley rafters. I already understood how to calculate and layout common rafters using Pythagorean theorem but was curious how hip and valley’s worked and this video provided all the information I needed. Your explanations were great and easy to understand, from what I got from the video this is very similar to the common rafter except for your 12in in the common rafter formula you would sub it for 17 inches and subtract for half the distance of the width of the peaks of the common rafters. I will be subscribing keep up the great work👍

[rednissan]

Just wow. So simple the way you explain it. I have done construction for over 30 yrs. and this method is great. Many people will benefit from this video.

[jackable]

Good videos just a side note when cutting the hip overhang to match the rafter thickness it has to be measured on the hip plumb cut line and not square to the board cheers buddy

[joshuadenney]

What cad are you using and is there a free one that I can use

[wabznazam]

Great video of you live in America. Imperial measurements just muddles things. Degrees and millimetres are better suited to mathematical calculations.

[Outrunninaround.]

A 1.5” wide board is bisected at a 45 angle, that chord measures 2 1/8”. Half of that is 1 1/16. So that should equal the measurement adjusted from the tip of double 45 bevel to the theoretical center on ridge board.

[hughlancaster]

I have watched many videos on building a hip roof . I am redoing a hip built years ago adding a wrap around porch. It was built out of real 2 by 4s. I tried using the calculator and use the framing square to make my cuts. I am adding a wrap around porch using 2 by 6 and my run 70 1/2 inches. My height about plate for my rafters is 5 inches on 2 by six to match the design of the old build. If my king rafter height above plate is 5' and my HIP rafter height above plate is 5, it should be level. To check if level, I took a straight 2 by 6 place on top of the rafters in line with the plate all the way to the hip; It is showing the hip is about 3/4 inch to low. My plate is level all the rafters up to the king rafter are level.

[StevenWernerCS]

What is the best way to nail the 8 rafters together at the peek?

[Brandon-novc]

what dementions does the house have 2 be to have no ridge?

[tillmansr]

Great video again. At 11:03 you have the measurement 1-13/16. Is this number calculated or 'measured in the field'? Because without that number, none of the subsequent math can occur. confused..

[kicha_tm]

Hypotenuse of 10x10 square equals to 169.705. Just calculate 120√(2).
√(50^2+(120√(2))^2) is 176.91. The reason is 5/12 does not translate to 5/17 exactly, it's just very close approximation.

[Brandon-novc]

How do you get the hip length without a calculator?

[adrcamacho]

So hip rafters are always 45 degrees to the hip?

[joshuaiverson]

I mentioned 2in buy 3 and 3/4 to 2 and 7/8s

[stevegoulding]

Clear as mud. I’m sure if you did that same calculation in decimals it would be easier to understand and that imperfectional gap wouldn’t be there? Come on America, get with the times and go decimal. Steve from Australia.

[TheJudgeJuryExecutioner]

My home is a 29 x 29 colonial and the roof is framed exactly like in this video.

[Tina-hr]

Actual dimension of a 2 x 8 is 7-1/4" not 7-1/2"

[jorgevazquez]

I had watched other videos where they take 3/4 of in inch for the hip drop why is that