For those saying he's over-complicating it with the explanation... Understand he is only giving pure detail. I mean we are talking about stairs here that involve height, safety, comfort of movement. A screw up will have your stringers made to climb mountains and some pretty worn out knees, legs. So for those that are not grasping the method or need something a bit more "lamen terms" and easier to determine and get everything you need, here's a simplified and still logical way... Rise - Measurement from Floor to “Landing” or top of the final stair Run - Measurement from landing to desired floor area in length from the landing to desired bottom Riser - The “wall” height in front of your foot Tread - The “step” you place your foot as you walk up or down the stairs Stringer - The wood frame that holds the tread and frames the staircase EXAMPLE: Rise: 25.5" Run: 35" Pitch/Angle: 38.75* Desired Riser Height: 6" Get Total Inches: A = (Run / Rise) * 100 = 72.85" ... Let's just say 73 total inches. Determine actual number of stairs Needed: B = Rise / 6 = 5.83 (Kill off everything right of the decimal and you have just 5, use judgment if you want 4 or 5) Determine Rise Height C = Rise / B(5) = 7" (Be sure to meet your code minimums because it's not always dead even, could be 7 3/4...etc) Determine Tread inches: D = Rise / C(5) * 2 = 10" (If It's 9" or greater, don't multiply) Now you have how many steps you need, rise, tread, riser length and runner length all within a couple minutes. Lastly, lets determine the angle of the stringers and how many so you can start building. Determining The Angle or Pitch of the staircase R = B * Rise = 38.75 Determine How Many Stringers(2 is already accounted for for the ends: Each ft of your stairs gets 1 stringer to include with the 2 already for the ends... 2ft = 3 Stringers (2-Ends, 1 Center) 3ft = 4 Stringers(2 Ends, 2 even distributed in the center of the outer) 8ft = 8-9 Stringers(2 ends and meet them evenly to the center) Etc... Don't be cheap or try to cut corners adding 2 stringers end to end because I've seen it. If you are building a deck for someone, FOR ME, I like the treated wood ALL OVER not just at the bottoms. Don't make the mistakes even the top pros of the industry make and that's forgetting to measure for your landing. Does your client want the extension or does your last step prior to the landing need to be lower. Counter your measurements from rise and run so you stay even with everything and you'll be good.
some people are brilliant and know what they are talking about, but cant teach. I build steps and this is one of the most complicated teaching I have ever seen. He is to smart to teach, at least on this particular method..
@@apprenticemath I believe what always learning is saying you are "over-complicating" or more on the lines of "over-explaining" it which I highly disagree considering there's not another video I've seen on stairs that actually explain in detail. ALTHOUGH your outline is pretty much what it was in the end, it was however a tad over-explained and for people that may not grasp the math as quick or know how to use math to get an answer, maybe I can provide some insight to help, i'll add it as a new comment.
Very good observation. No, it won`t. The stringer shortenings are shown and explained in Stair layout (basic, straight flight) The next best thing is to rough cut one out of some scrap plywood to see for yourself.
I know there are some accuracy issues when converting fractions to decimals, but I did not expect to get a full 4" difference in 2 calculations that I did. Using the unit bridge, and multiply by 3, we have what you wrote, which is 39.88". But if we use Pythagorean theorem on the rise and run values to calculate the length of board we need, we get 43.3" (eg 25.5^2 + 35^2 = c^2) That is several inches different, so I'm wondering what part is different or wrong about the 2nd calculation that makes it be off by several inches.
Math is right, the 2 different results relate to 2 different sizes of triangles. The 39.88" figure is used in layout, the 43.3" is a theory length of the stringer = shortest piece of wood needed to span the opening.
I have opened access to my basement from the backyard. The length of the walls on the right and the left of the stairwell are around 84 inches. The width of the stairwell is 48 inches. What square feet should the landing be to meat the standards? Also what should the angle of the stairwell be? Thank you for your help.
Yes, the biggest issue I see with 95% of people/TH-cam vids trying to explain stairs is, they always assume you have an ‘unlimited’ run and never even mention the concept of “trapped run”/pre-determined run. Which I find odd because in more cases than not, within a house the staircase opening and run is already pretty much set/limited. It’s only really if you’re building outside, in a large building/shop, etc you wouldn’t need to worry about how far out the run goes.
Sure, listen to this one and apply it for steel. The type of stairs makes no difference, steel or wood, the math is still the same. depending on your rise and run
+ΚΩΣΤΑΣ ΜΙΧΑΗΛΙΔΗΣ GET ON-BOARD THE SPACE CRAFT, THIS MATH GETS REPEATED EVERY TIME I BUILD A SET OF STAIRS. SOMETIMES I DO IT WITHOUT NUMBERS, BUT THE DIVISONS AND ALL THE STEPS ARE STILL THERE.
For those saying he's over-complicating it with the explanation... Understand he is only giving pure detail. I mean we are talking about stairs here that involve height, safety, comfort of movement. A screw up will have your stringers made to climb mountains and some pretty worn out knees, legs. So for those that are not grasping the method or need something a bit more "lamen terms" and easier to determine and get everything you need, here's a simplified and still logical way...
Rise - Measurement from Floor to “Landing” or top of the final stair
Run - Measurement from landing to desired floor area in length from the landing to desired bottom
Riser - The “wall” height in front of your foot
Tread - The “step” you place your foot as you walk up or down the stairs
Stringer - The wood frame that holds the tread and frames the staircase
EXAMPLE:
Rise: 25.5"
Run: 35"
Pitch/Angle: 38.75*
Desired Riser Height: 6"
Get Total Inches:
A = (Run / Rise) * 100 = 72.85" ... Let's just say 73 total inches.
Determine actual number of stairs Needed:
B = Rise / 6 = 5.83 (Kill off everything right of the decimal and you have just 5, use judgment if you want 4 or 5)
Determine Rise Height
C = Rise / B(5) = 7" (Be sure to meet your code minimums because it's not always dead even, could be 7 3/4...etc)
Determine Tread inches:
D = Rise / C(5) * 2 = 10" (If It's 9" or greater, don't multiply)
Now you have how many steps you need, rise, tread, riser length and runner length all within a couple minutes. Lastly, lets determine the angle of the stringers and how many so you can start building.
Determining The Angle or Pitch of the staircase
R = B * Rise = 38.75
Determine How Many Stringers(2 is already accounted for for the ends:
Each ft of your stairs gets 1 stringer to include with the 2 already for the ends...
2ft = 3 Stringers (2-Ends, 1 Center)
3ft = 4 Stringers(2 Ends, 2 even distributed in the center of the outer)
8ft = 8-9 Stringers(2 ends and meet them evenly to the center)
Etc...
Don't be cheap or try to cut corners adding 2 stringers end to end because I've seen it. If you are building a deck for someone, FOR ME, I like the treated wood ALL OVER not just at the bottoms. Don't make the mistakes even the top pros of the industry make and that's forgetting to measure for your landing. Does your client want the extension or does your last step prior to the landing need to be lower.
Counter your measurements from rise and run so you stay even with everything and you'll be good.
Thanks for the detail & thanks for watching!
Wow! I watched so many videos & you broke it down quickly and simply.
Thanks for watching!
Excellent explanation. Figured out finally how to calculate the stairs in my backyard. Learned much from this video.
Ann Shr Thanks for watching!
I really had to slow down the video at 13:00 to see how you arrived at 11/16 inches.
Amazing. Thanks.
This is absolutely fantastic. Clear & easy to follow. Thank you!!!
some people are brilliant and know what they are talking about, but cant teach. I build steps and this is one of the most complicated teaching I have ever seen. He is to smart to teach, at least on this particular method..
Video outline:
1 take a measurement
2 divide by 3
Which pasrt is overwhelming?
It seemed fine to me!
His a genius but the way hi splaint is too complicated to undrrstand..hi got me crazy at some point..
@@apprenticemath I believe what always learning is saying you are "over-complicating" or more on the lines of "over-explaining" it which I highly disagree considering there's not another video I've seen on stairs that actually explain in detail. ALTHOUGH your outline is pretty much what it was in the end, it was however a tad over-explained and for people that may not grasp the math as quick or know how to use math to get an answer, maybe I can provide some insight to help, i'll add it as a new comment.
Step Length x Number of treads + one tread (unit run) = Stringer Length
Simple as that
Loved your video! Best one I've watched and has helped me completely. Building my own deck stairs today. Thank you.
This video deserves a LIKE and SUBSCRIPTION.
thank you! I finally I can under stand what is being said
I admirer your teaching, I didn't see the link to follow up
i love your channel. thank you for all your work. I'm an apprentice carpenter.
+Uriel Villegas You`re welcome. Happy holidays.
Uriel Villegas ŷŷv
gracias por dar estos consejos , la verdad me alludo mucho, tenia muchas dudas sobre estos proyectos , thank you very much
excellent explanation
What about the thickness of the tread where you place your feet? Won't the tread throw off the height of the landing?
Very good observation. No, it won`t. The stringer shortenings are shown and explained in Stair layout (basic, straight flight) The next best thing is to rough cut one out of some scrap plywood to see for yourself.
can you yo it in milli meters plc
@@peletupou2078 Just convert inches to mm
I agree. From this explanation the first step will be and inch and a half short assuming 2x material treads.
I know there are some accuracy issues when converting fractions to decimals, but I did not expect to get a full 4" difference in 2 calculations that I did.
Using the unit bridge, and multiply by 3, we have what you wrote, which is 39.88".
But if we use Pythagorean theorem on the rise and run values to calculate the length of board we need, we get 43.3" (eg 25.5^2 + 35^2 = c^2)
That is several inches different, so I'm wondering what part is different or wrong about the 2nd calculation that makes it be off by several inches.
Math is right, the 2 different results relate to 2 different sizes of triangles. The 39.88" figure is used in layout, the 43.3" is a theory length of the stringer = shortest piece of wood needed to span the opening.
One thing that confused me is the last calculation of the total length of the stringer the times 3 then 14
I have opened access to my basement from the backyard. The length of the walls on the right and the left of the stairwell are around 84 inches. The width of the stairwell is 48 inches. What square feet should the landing be to meat the standards? Also what should the angle of the stairwell be? Thank you for your help.
Look up LOCAL Building Code in library.Angle = tan^-1 (rise / run), plug in your numbers
@@apprenticemath ñn
Very Good!
Thank You!
trapped run class is great, I like the unit bridge2
Yes, the biggest issue I see with 95% of people/TH-cam vids trying to explain stairs is, they always assume you have an ‘unlimited’ run and never even mention the concept of “trapped run”/pre-determined run. Which I find odd because in more cases than not, within a house the staircase opening and run is already pretty much set/limited. It’s only really if you’re building outside, in a large building/shop, etc you wouldn’t need to worry about how far out the run goes.
can you show me how to calculate a straight steel step
No. Same as wood.
Sure, listen to this one and apply it for steel. The type of stairs makes no difference, steel or wood, the math is still the same. depending on your rise and run
Can you do it in milimter please thank you
Will shoot one for you this week (and everyone else)
Thanks for the idea!
nice stair case calcu;ation
it is a nice stair case
if you ever made a stair with this missing math i will fly to the moon .................
+ΚΩΣΤΑΣ ΜΙΧΑΗΛΙΔΗΣ GET ON-BOARD THE SPACE CRAFT, THIS MATH GETS REPEATED EVERY TIME I BUILD A SET OF STAIRS. SOMETIMES I DO IT WITHOUT NUMBERS, BUT THE DIVISONS AND ALL THE STEPS ARE STILL THERE.
Angle=28.65°
👍👍👍
nice try but MUCH harder than necessary
Too much math. I’m not having stairs now.. Thanks...
Please dub Telugu
Mm is easier
damn...you are so unprepared and amateurish. total waste of time= ''thumbs down'' AMATEURISH !!
Does anything say on the channel "PRO video" or "Made by jounalists and videographers"
More reading, more thinking, less spazzing out.