Thanks for the great information in the video. This is basically an octagon geometry based gambrel. Each individual truss board can be calculated by taking the desired width of your building (in feet or inches) and dividing that number by 2.6132. This number is a set ratio between the horizontal width of the roof (or building) and each truss board (or side of the octagon). For example if you want a 10 foot wide roof (120 inches), then each truss board will be 45.924 inches (45.924 x 2.6132=120 or 120/2.6132=45.924). You can use one of the many different octagon calculators online to figure out your measurements, but this is a simple formula to use. Once you calculate the length of each individual truss board then they can all be cut with a inward 22 1/2 degree angle. I learned a lot from this, and I hope this helps someone else.
Amazing video!!! I've spent a month looking for something like this and I finally got it because you made it easy for a person like me to understand! THANK YOU!!!!!!
Thanks for a great informative video! Now this is how to find the CORRECT pitch (or slope) for a traditional American gambrel barn roof! There are other posts here on RUclips showing calculations for finding angles for a gambrel roof, but the trusses are incorrectly pitched and not as strong for high winds. Growing up in the Western Maryland Cumberland Valley, I got to see a few Mennonite barn raisings in Franklin County Pennsylvania - all constructed to near completion in one day. It's quite the spectacle... especially watching those HUGE roof trusses go up by hand with no crane assistance. We're talking some BIG barns! Naturally, your Amish source comes from a long tradition of skilled woodworkers and millwrights who passed on every clever trick and secret to barn raising. Great video!
Very useful information! I have many Amish neighbors and seeing them build is always neat. They typically build very sturdy buildings and they work quickly!
This was very informative for me, as I want to build 32' wide and 48' long attic residence over a slab on grade garage in New Hampshire. The local inspector was talking about knee walls and I told him that would be wasting floor space. I see you got it done and your span is 4' wider than what I want to do.
Great video, and thank you for the help with the calculations! I’m planning on building my own gambrel roofed barn this spring, so this video will be a huge help!!
I don't want the rain to just drop down on the side othe barn so how can I do this so it drops 6 inches away from the side. Any help is greatly appreciated. Love this information.
Great video, I have been wanting to build a storage barn with this type of roof but I don't like the ones I've seen because they don't have the little kick out at the bottom to give you the soffit over hang. Do you have any tricks or rules for figuring that. Thanks in advance.
Nice video explaining Gambrel roof design. I have one question. How do you determine the angle and length of the roof portion where the roof meets the upright wall section in the picture at the end of your video 6:55 mark
The compass setting doesnt matter as long as it's within the boundary. He's bisecting the square from the 3 inch mark on both axis to mark the pitch change.
I decide on how much overhang I want then cut a 2X6 for each end and nail them in. Then I run a string between the two and install all the rest of them to the string.
Could a person ( man , but I'm being politically correct ) , use a set of truss rafters and add the lower rafter section ? Would they be best to add them onto the trusses , or build them as slanted walls and mount the trusses on top ?
That is very smart! I have a barn with a gambrell roof and I am wanting to double its length. Do you have any suggestions how I build the trusses so they will match the existing ones exactly? The barn was here when I bought the place so I do not know what the angles are and they are kinda high up and hard to get to, to measure.
I was gonna say ... if you could get up there and measure the length of those rafter pieces, you could match it up. Get an Amish kid to climb up there! Ha!
@@TimTools99 haha! Down here on the Texas Gulf Coast there are no Amish kids. Or Amish adults that could make Amish kids. And all they kids I used to hire to help out are in the service now. I could do all the carpentry work on the ground myself, - IF I knew what the dimensions and angles were. I reckon I'll have to hire a carpenter to do it. I didn't know if you knew a way to calculate it, given the width and the height. Thanks for responding. I love your channel. You remind me a lot of me.
@@HanginOutWithStan Thank you Stan. I appreciate your kind words. I am a Jack of all Trades kind of a guy. Self taught. So I don't pretend to be an expert at any of this stuff. Sounds like you and I have a lot in common and I was thinking .... if you measured from the floor up to the peak of your roof and you know your width, you could figure out your rafters "IF" each of the rafter sections are the same like in this video. The problem is whether they were laid out this way. I guess you would still need to measure the rafter sections to find out.
I drew a line on the floor, then in the center, I drew a line perpendicular Line. This gave me a center point and a place to start and finish my arc. This ensured that the rafter would have two sides that were the same. Then I bisected the angle on each side. Hope this explains it.
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
Thanks for the great information in the video. This is basically an octagon geometry based gambrel. Each individual truss board can be calculated by taking the desired width of your building (in feet or inches) and dividing that number by 2.6132. This number is a set ratio between the horizontal width of the roof (or building) and each truss board (or side of the octagon). For example if you want a 10 foot wide roof (120 inches), then each truss board will be 45.924 inches (45.924 x 2.6132=120 or 120/2.6132=45.924). You can use one of the many different octagon calculators online to figure out your measurements, but this is a simple formula to use. Once you calculate the length of each individual truss board then they can all be cut with a inward 22 1/2 degree angle. I learned a lot from this, and I hope this helps someone else.
Amazing video!!! I've spent a month looking for something like this and I finally got it because you made it easy for a person like me to understand! THANK YOU!!!!!!
I have watch a bunch of videos and enjoyed urs the best and easiest to understand.
Thanks for much . Enjoy learning from a young man like ur self.
Thanks for a great informative video! Now this is how to find the CORRECT pitch (or slope) for a traditional American gambrel barn roof! There are other posts here on RUclips showing calculations for finding angles for a gambrel roof, but the trusses are incorrectly pitched and not as strong for high winds. Growing up in the Western Maryland Cumberland Valley, I got to see a few Mennonite barn raisings in Franklin County Pennsylvania - all constructed to near completion in one day. It's quite the spectacle... especially watching those HUGE roof trusses go up by hand with no crane assistance. We're talking some BIG barns! Naturally, your Amish source comes from a long tradition of skilled woodworkers and millwrights who passed on every clever trick and secret to barn raising. Great video!
Thank you. Yes, I have learned a lot from my Amish friends.
You're so talented...nice to hear your voice....sending hugs 💕💕
Awe Thanks young lady! I miss you.
Very useful information! I have many Amish neighbors and seeing them build is always neat. They typically build very sturdy buildings and they work quickly!
Thank you for the breakdown it put my mind at ease for my gambrel roof project...keep the videos coming
I am glad my video helped you.
This was very informative for me, as I want to build 32' wide and 48' long attic residence over a slab on grade garage in New Hampshire. The local inspector was talking about knee walls and I told him that would be wasting floor space. I see you got it done and your span is 4' wider than what I want to do.
Excellent explanation. 👍
Nice job, great explanation
Thank you so much for an excellent demonstration
I believe the angle on miter saw is 22.5 for the cuts. Saws have that as a quick setting. But this explanation is great.
Awesome tip. thank you, I am building an addition with a 3 door garage with loft above, gonna use this pattern for my roof line
Great video, and thank you for the help with the calculations! I’m planning on building my own gambrel roofed barn this spring, so this video will be a huge help!!
Okay great! Good luck with your build
Friend, could you help me? I need to make some logs for a 20x20 shed, what would be the measurements and angles that I would use?
Brilliant and nicely explained
Great job
Great video. Now I need to find out how they framed the eaves
This is wonderful, very useful information.
I don't want the rain to just drop down on the side othe barn so how can I do this so it drops 6 inches away from the side. Any help is greatly appreciated. Love this information.
Great video, I have been wanting to build a storage barn with this type of roof but I don't like the ones I've seen because they don't have the little kick out at the bottom to give you the soffit over hang. Do you have any tricks or rules for figuring that. Thanks in advance.
Do you remember how wide you made your gussets on your barn? In the photo at the end?
😊thanks for help me
Nice video explaining Gambrel roof design. I have one question. How do you determine the angle and length of the roof portion where the roof meets the upright wall section in the picture at the end of your video 6:55 mark
What size lumber would I need for a 20' or 24' truss, 2x4, 2x6 or?
What measurement do you set the compass to?
Doesn't matter. You are just using the compass to find a 45 degree angle.
Nice!
Thank you!
What keeps the exterior walls from blowing out??
Great!
What are the angle degrees??? 45°/2=22.5°-I need 12 wide also.... what are the length of the 4 boards?? for the same 12 wide??
Did you ever figure this out? I’m right there now and any tips would be appreciated
What setting is the compass on?
Thanks for the info.
The compass setting doesnt matter as long as it's within the boundary. He's bisecting the square from the 3 inch mark on both axis to mark the pitch change.
@@conz000 thanks for your help, as I was watching the video it was as if he just went from his center mark and made a mark with his compass.
@@dannyhernandez6189 hope that helps;)
How would you go about laying out the "wing" overhangs, at the bottom of the roof, on the long sides of the barn/building?
I decide on how much overhang I want then cut a 2X6 for each end and nail them in. Then I run a string between the two and install all the rest of them to the string.
@@TimTools99 what angle, or pitch, is used for the overhang? Same as the top section of the gambrel?
@@RustyCarnahan I just eyeballed it and said that's about right. Ha!
Do these get birds mouths?
How did you make a big compass
With a rope. I nailed one end down and tied a pencil on the other end.
Could a person ( man , but I'm being politically correct ) , use a set of truss rafters and add the lower rafter section ? Would they be best to add them onto the trusses , or build them as slanted walls and mount the trusses on top ?
That is very smart!
I have a barn with a gambrell roof and I am wanting to double its length.
Do you have any suggestions how I build the trusses so they will match the existing ones exactly?
The barn was here when I bought the place so I do not know what the angles are and they are kinda high up and hard to get to, to measure.
I was gonna say ... if you could get up there and measure the length of those rafter pieces, you could match it up. Get an Amish kid to climb up there! Ha!
@@TimTools99 haha! Down here on the Texas Gulf Coast there are no Amish kids. Or Amish adults that could make Amish kids. And all they kids I used to hire to help out are in the service now.
I could do all the carpentry work on the ground myself, - IF I knew what the dimensions and angles were. I reckon I'll have to hire a carpenter to do it.
I didn't know if you knew a way to calculate it, given the width and the height.
Thanks for responding. I love your channel. You remind me a lot of me.
@@HanginOutWithStan Thank you Stan. I appreciate your kind words. I am a Jack of all Trades kind of a guy. Self taught. So I don't pretend to be an expert at any of this stuff. Sounds like you and I have a lot in common and I was thinking .... if you measured from the floor up to the peak of your roof and you know your width, you could figure out your rafters "IF" each of the rafter sections are the same like in this video. The problem is whether they were laid out this way. I guess you would still need to measure the rafter sections to find out.
Fine. But it would be more accurate using 22-1/2° angle cuts.
Out of the blue you ended up with a line drawn at the bottom...thus made you mistake in lining up...but no explanation as to why the line is there.
Wanted to also add that I do like the video...just confused on the line.
I drew a line on the floor, then in the center, I drew a line perpendicular Line. This gave me a center point and a place to start and finish my arc. This ensured that the rafter would have two sides that were the same. Then I bisected the angle on each side. Hope this explains it.
No one has a six foot compass