I’ve been in the construction trade building houses for many years here in California. Recently I became a vocational instructor inside a prison. This is by far the best video to help me teach my students.
thanks for the video, During the process of creating your 90 degree triangle, Could you or were you also able to utilize numbers consisting of three positive integers to obtain a perfect 90 angle? (Pythagorean triple).
Lol. Rad on your calculator meant radians. Thats all it meant... Arc length is radius multiplied by radians (think of radians as your angle, err... portion of a circle). To find radians, you convert from degrees. There are 2pi radians in 360 degrees... one rotation. Thus you can multiply your degrees by pi/180. Thats all it takes to calculate arc, you don't need some fancy calculator. Try it... next time multiply your degrees by pi/180 (giving you the units of radians instead of degrees) then multiply that number by your radius (giving you your arc length). Sorry, I don't even know how this video ended up on my instant queue for I have zero interest in carpentry etc. But I heard the rad/arc calculation which gave me a slight chuckle. Made my night lol. Thanks for that :) So naturally I figured I'd chime in and explain what your calculator was doing to give you your desired output and how to do it yourself. It'll be handy if you ever forget fancy number machines :)
Brandon Satterstrom, thank you! That absolutely worked! The CMP calculator is great because it makes it so much faster. I just dislike being so dependent on it. It also helps to learn the decimal equivalents on a tape measure. In the video’s calculations, the last tread would be 3/16” off because he let the calculator do the rounding in fractions instead of simply using decimals. Great video! Thank you for sharing!
We appreciate your input. To be able to measure and mark exact arc lengths using your method is almost impossible. Framers are used to working in 16ths as the smallest dimension they can read on their tape, so this method and the const. master calculator works best for rough framing in the field which is exactly what we are training our students to do using this method. Thanks for watching even though carpentry isn't your thing and again thanks for the input.
jody hanoski this lab is designed for our second year carpentry students students and not really intended to be training anybody in the public. Yes the pace is slow methodical but again we’re training students so they can employed in our industry. I’m sure you would agree the need for our trade Would be very happy see any type of training or video you would like to produce on the topic so that we can present another way to make circular stairs to our students. Always more than one way to train future apprentices
I've built hundreds myself, and never once considered myself a carpenter. I learned to build curved stairs with a 1/64th tolerance, because as you know, if your off 1/16th, it can be compounded.
You are a good teacher best explanation I have seen so far many thanks for the upload good job 👍
I’ve been in the construction trade building houses for many years here in California. Recently I became a vocational instructor inside a prison. This is by far the best video to help me teach my students.
Love America Thanks for the compliment. If you need stair curriculum, send me a email at gmartin@greenriver.edu. Be glad to share with you
Excellent explanation,you bring it down so everyone can understand
J
Thanks bro this is the best explanation I’ve seen so far, so now I got it I know how to layout and find the arc length in trigonometry.
Kingsley L McHugh Thanks for the compliment. Glad we could help out
Best video on this subject by a country mile, great demonstration.Thank you.
Smart job
90 inch radius, 48 polygon will give you the cord length also? Nice vid! 👍👍
that's very interesting video
thanks for the video, During the process of creating your 90 degree triangle, Could you or were you also able to utilize numbers consisting of three positive integers to obtain a perfect 90 angle? (Pythagorean triple).
This is very good video . If needed 17 steps in 270 degree in 310 cm . It will take him 1 day to explain
Lol.
Rad on your calculator meant radians. Thats all it meant...
Arc length is radius multiplied by radians (think of radians as your angle, err... portion of a circle). To find radians, you convert from degrees. There are 2pi radians in 360 degrees... one rotation. Thus you can multiply your degrees by pi/180.
Thats all it takes to calculate arc, you don't need some fancy calculator. Try it... next time multiply your degrees by pi/180 (giving you the units of radians instead of degrees) then multiply that number by your radius (giving you your arc length).
Sorry, I don't even know how this video ended up on my instant queue for I have zero interest in carpentry etc. But I heard the rad/arc calculation which gave me a slight chuckle. Made my night lol. Thanks for that :) So naturally I figured I'd chime in and explain what your calculator was doing to give you your desired output and how to do it yourself. It'll be handy if you ever forget fancy number machines :)
Brandon Satterstrom, thank you! That absolutely worked! The CMP calculator is great because it makes it so much faster. I just dislike being so dependent on it.
It also helps to learn the decimal equivalents on a tape measure. In the video’s calculations, the last tread would be 3/16” off because he let the calculator do the rounding in fractions instead of simply using decimals.
Great video! Thank you for sharing!
We appreciate your input. To be able to measure and mark exact arc lengths using your method is almost impossible. Framers are used to working in 16ths as the smallest dimension they can read on their tape, so this method and the const. master calculator works best for rough framing in the field which is exactly what we are training our students to do using this method. Thanks for watching even though carpentry isn't your thing and again thanks for the input.
You could divide the areas with a compass... Thank heaven it is not an odd number of treads in the arc...
That wouldn’t change anything
Could he have not just used a speed square for his angles??
The carpenter knows what he's doing. But you need an experienced cameraman or we can't learn nothing from looking at this
Try working in metric. You'll be amazed. ;)
Flemming Veggerby like I tell my carpentry students. “The American carpenters are behind the metric system every inch of the way’.
That is so long and drawn out boredom. I've built hundreds of circular stairs theres an easier way providing you have the area already to go.
jody hanoski this lab is designed for our second year carpentry students
students and not really intended to be training anybody in the public. Yes the pace is slow methodical but again we’re training students so they can employed in our industry. I’m sure you would agree the need for our trade Would be very happy see any
type of training or video you would like to produce on the topic so that we can present another way to make circular stairs to our students. Always more than one way to train future apprentices
can you teach me?
I've built hundreds myself, and never once considered myself a carpenter. I learned to build curved stairs with a 1/64th tolerance, because as you know, if your off 1/16th, it can be compounded.