ROOF FRAMING CALCULATIONS

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  • Опубликовано: 28 дек 2024

Комментарии • 167

  • @Trentlee89
    @Trentlee89 5 месяцев назад +4

    This made me realize I'm more dumb than I thought i was, Def worth watching 10/10 for sure

  • @MichaelDavidHiltner
    @MichaelDavidHiltner 9 лет назад +5

    I'll be building a 12x18 shed to join to my existing 12x12 shed (will remove the sheathing from the joining side), remove my existing roof and tie it in to my new shed, later this spring. This has been extremely helpful for my understandings.
    Thanks Professor! This is what I use the internet for!

  • @bobalicon1000
    @bobalicon1000 3 года назад +3

    Finally after looking over 20 videos I found this one that I understood how to measure and cut the rafters properly.

  • @jrquidi2572
    @jrquidi2572 3 года назад +4

    I love it .... learning is the BEST way to get to be the best in subjects

  • @naturalmystics-kd9vt
    @naturalmystics-kd9vt 3 года назад +1

    Mr Michael nauth thank you for this video I learn a lot from you video you are a good gentleman and a good teacher I thank you

  • @flankerroad7414
    @flankerroad7414 5 лет назад +1

    Great video offering detailed insight on the math of cutting rafters...the better grip you have on this the more confidently you'll approach your work.

  • @Tigdude
    @Tigdude 8 лет назад +4

    Very nice explanations and drawings. ..thank you for your help. Clearly shows the need for math skills and some knowledge of building.

  • @montaguechristian1
    @montaguechristian1 10 лет назад +5

    Great break down. Thanks for the informative tutorial.

  • @tammyghashghaie3406
    @tammyghashghaie3406 9 лет назад +8

    Dear professor
    amazing and informative lecture
    truly Tammy

    • @michaelnauth
      @michaelnauth  9 лет назад

      Thank you Tammy

    • @tammyghashghaie3406
      @tammyghashghaie3406 9 лет назад +1

      i will look forward to watch more of you video by the way your tone of voice makes audience to understand and follow you more

  • @AFFarms444
    @AFFarms444 2 года назад +1

    Superb explanation! Thank you.

  • @timbarry5080
    @timbarry5080 4 года назад +1

    That's why its easier to measure your span and run from the inside of the top plate rather than the outside. This way your measuring line is on the bottom edge of the rafter than being inside the width of the board. And your measuring line ends right at the edged of the ridge board instead of its center. Don't forget to subtract the thickness of the ridge from the span before calculating the run..

  • @calbinoIa
    @calbinoIa 10 лет назад +40

    I used to cut roof rafters for framing conventional roofs with a calculator also and then built them. I understand how to do this, but after listening to you explain this I see why I hated math in school. Sorry, but while this is an excellent explanation, it is dry enough to put me back to sleep.

    • @wallacelux
      @wallacelux 5 лет назад +4

      Ungrateful.

    • @arturovarela8395
      @arturovarela8395 5 лет назад +1

      I felt like a was back in high school too!!!
      I rather skip class and go take 3 lunches!!!

  • @mariosioannou4346
    @mariosioannou4346 9 лет назад +8

    Hi Michael, I found your lecture very interesting and informative. I think its good to explain fully how it all works. I, personally, will remember this lecture and put it to good use in the future. I just have one question at 18:13 onwards where the small triangle at the top shows a ratio of 1:1.5 re the slope. Is this a mistake or maybe I'm not fully understanding this. Can you please clarify?

    • @michaelnauth
      @michaelnauth  9 лет назад +8

      +Marios Ioannou
      Hi Marios
      In the Canadian Building Code the roof slope is given as a ratio relative to a rise of 1(Metric or S.I.). So a 1:1.5 roof slope is the same as 8:12 in Imperial terms and also the same as 150:250 when using the Metric (SI) framing square. Good catch - I forgot to note that. First guy in 351 000 to ask that.

  • @kirkjumpp5506
    @kirkjumpp5506 Месяц назад

    IS THERE A BOOK YOU CAN RECOMMEND TO ADD MORE KNOWLEDGE TO THIS VERY GREAT VIDEO?

    • @michaelnauth
      @michaelnauth  Месяц назад

      In Canada, CARPENTRY 4th Can. ed. by Vogt, Nauth, & Lapierre. In the USA, CARPENTRY 8th ed. by Vogt.

  • @unclemony5939
    @unclemony5939 4 года назад +1

    Hello professor, ur lecture is impeccable, BUT!! Simplicity is what I live for. I have paid dearly, but mastery is never too far around the corner.

  • @hillcountrylivin
    @hillcountrylivin Год назад

    Very, very informative and helpful. Two questions: how important is it to subtract the ridge drop from the actual rise calculations? Wouldn't the total rise plus the rafter stand calculations be sufficient for most structures?

    • @michaelnauth
      @michaelnauth  Год назад

      The subtraction is mainly a test for carpentry competitions where the ridge is flat on top (a standard 2x6) as opposed to one that has been bevelled to a peak.

  • @KennethDFranks1
    @KennethDFranks1 8 лет назад +2

    Great math lesson with practical uses of Pythagoras' Theorem.

  • @machia0705
    @machia0705 6 лет назад +2

    Good lecture professor , but I can do all of this with a pencil and my tool belt. A circular saw and a T-square on the bench too. As for design work, I have a book of tables . However your in depth look at this and explanation are impressive. Great presentation.

  • @larrytinnin3357
    @larrytinnin3357 11 дней назад

    What about ledger board is already set and the wall height is already in place. How to determine the rafters then, I get this method and placing my own ridge, what about a ridge or ledger was already in place,

  • @someonespadre
    @someonespadre 4 года назад

    I'm building a small shade structure. In order to figure out how to frame the roof I watched carpenters on RUclips with their speed squares and their framing squares and their construction master calculators and figured out all the pieces and parts then, like this guy, I sat down with paper and pencil and broke down all the little triangles. It's all just Pythagorean theorem or simple proportions, don't really need trigonometric functions except to calculate angles for a miter saw. Then I did it again in my cogo (coordinate geometry) software to confirm my numbers.

    • @michaelnauth
      @michaelnauth  4 года назад

      You're correct David. It's simple geometry.

  • @poroviri
    @poroviri 4 месяца назад

    hi, can you please saw me how to calculate the rise of the rafter and the width of the building ,if I already have 12 feet roofing iron?

  • @gregwarner3753
    @gregwarner3753 5 лет назад +2

    All of these calculations can be done on an old fashioned framing square . All you need is a set of instructions .

    • @defy2598
      @defy2598 5 лет назад

      Yes but this is only the beginning this math builds on its self alowing you to do octagon Pentagon and any other gon roof

    • @unclemony5939
      @unclemony5939 3 года назад

      @@defy2598 🤣🤣🤣

  • @jonienglish3231
    @jonienglish3231 3 года назад

    Michael @17.37 - X Calculation getting to Technical
    just say the 5ft + HAP 4 1/2 - Ridgeboard Width = the Actual Height for the Ridgebeam Pending the Width of the Ridgeboard .

  • @MariaSearsmercy13
    @MariaSearsmercy13 10 лет назад +3

    Explained well. Even if ones math skills are rusty. Thank You.

    • @robindevellen7038
      @robindevellen7038 5 лет назад

      Maria Sears if I had math skills to begin with🥴

  • @allamericanhandyman7633
    @allamericanhandyman7633 9 лет назад

    Detailed explanation. Worth watching!

  • @addaimartin6237
    @addaimartin6237 3 года назад

    I like the way you are teaching

  • @michaelfahandez5042
    @michaelfahandez5042 3 года назад +1

    Thx u sir godbless clever made it easyer for me

  • @samanthayau3141
    @samanthayau3141 6 лет назад

    thanks for showing. It is a very tutorial, educational video. I built a roof and did the calculation. The rafters always came off a bit and could not fit right in. The problem is the rafter with a birth mouth that accutally sit two inches or whatever inches inside from the outside walls. You have mentioned about this problem by dropping the ridgeboard height. Can you explain to me how you get a 3/4? And why use 16 as a base when calculating ridge drop (x)? And what did you mean by cut/left on the flat? I am not sure i got it. Appreciate any help.

    • @michaelnauth
      @michaelnauth  6 лет назад

      For a roof that has a 7 in 12 slope, 7 is the rise (vertical) and 12 is the run (horizontal) . You would compare it to a similar triangle that has a run (base) of 3/4 of an inch or one-half the thickness of the ridgeboard. So the vertical (rise, r) of the small triangle would be found using ratios:
      r ÷ (3/4) = 7 ÷ 12; r = 7 x (3/4) ÷ 12 ; r = 7/16 . If the ridgeboard is 1½" thick then, the drop for the ridge is the unit rise (in this case 7) over 16. This works for any roof slope as long as the ridge is 1½" thick. An 8/12 slope would have an 8/16 drop or ½".

    • @samanthayau3141
      @samanthayau3141 6 лет назад

      Thanks so much of your information. Appreciate so much. I am not in this trade. But i love to build and design houses.

  • @BushcraftPaolo
    @BushcraftPaolo 5 лет назад

    Clear, polite... Perfect! Tanks a lot.

  • @davido3026
    @davido3026 4 года назад

    Excellent including Metric equivalences!!!

  • @HsingSun
    @HsingSun 4 года назад

    What do they call "side by side triangles" under both sides of roof rafters?

    • @michaelnauth
      @michaelnauth  4 года назад

      Not sure - together they form the Gable End.. Each one is a mirror image of the other.

  • @roxydog-db1pu
    @roxydog-db1pu 7 лет назад +1

    If This Old House talked about this it would have lasted about two episodes

  • @SuperCyril2
    @SuperCyril2 5 лет назад +6

    Remember to add on your overhang to your rafter length.

  • @irdenadi
    @irdenadi 3 месяца назад

    I still don't get it.. im having issues understanding the birdsmouth cutting. If my top plate width is 2/4 or 2/6 and the rafter sit flush on the top plate so the measurements are different isn't it? I mean I'm cutting more material (less HAP) so it drop at the top of the ridge as well. Please make me understand😅

    • @michaelnauth
      @michaelnauth  3 месяца назад

      There is no need to sit flush on top of the plate. The seat cut of the birdsmouth needs only to be 1.5", or 2" if the rafter sits over the wall sheathing. You are correct to say that there would be less HAP, but this will weaken the rafter tail. It is best to have at least 2.5 to 3" of HAP.

  • @markpenn4831
    @markpenn4831 7 лет назад

    Very clear and concise ! Many thanks...

  • @charlesgreen239
    @charlesgreen239 5 лет назад

    Very well explanation of the geometry. I still did not see how you calculate the rafter stand or HAP? You had 4 1/2 on the drawing.

    • @michaelnauth
      @michaelnauth  4 года назад

      Hi Charles
      Sorry it took so long to reply. I started to and then thought that a diagram would make it easier. I still haven't figured out how to post a diagram in the comments section. Well, here goes - in words. I had just stated that the Stand was 4½", I did not calculate it, but I measured it after the birds mouth was laid out. To calculate it, you would use Similar triangles and Pythagoras's theorem.
      First, to get the length of the plumb cut on a 6 in 12 sloped roof (1:2), draw a Ridge Plumb Cut line on the end of the 2 x 6 rafter and you will form a right triangle that is 5½" on on side, 2 3/4" on the other and the hypotenuse can be calculated using Pythagoras to get 6 1/8" [or you could just measure the plumb cut line].
      Second, setting the horizontal Seat Cut line at 3¼", the Heel Plumb Cut line would be a half of that or 1 5/8" (again because it is a 6/12 roof slope). Subtracting 1 5/8" from 6 1/8" gives you 4½".

  • @neilarreola7841
    @neilarreola7841 9 лет назад +2

    Just draw the truss diagram in autocad, right click on any line to show its properties and the length will be given. No need for calculations.

    • @ricardomontalvo963
      @ricardomontalvo963 9 лет назад +3

      +neil arreola Haha, yes super easy, but not everyone has that soo the old school way is the way to go

    • @JohnzeeMr
      @JohnzeeMr 8 лет назад

      Leonardo De Mao: Very nice finding the length of the rafter is exactly what children who do child's play need to get into mathematics, if I was a kid and got hooked into the practical application of triangles and somehow become aware that it is my social responsibility or necessary for a bright future then transitioning into more complex mathematics would have been a breeze if I learned the basics. Individual buildings may be child play but imposing structures have complex mathematics build into them like take into account the ever important but not visible sway of tall buildings as a result of wind, new materials have to be developed and chemistry comes into play to test the elasticity of various new substance made. Most people are good at climbing and hammering and it takes a lot of their brainpower to have no time to dream but a very few who just have enough experience as a carpenter or an excellent craftsman will have imagination to create innovation and an entire civilization will depend upon this people for its survival and prestige, Edison, Newton, Einstein etc, including the ultimate personification of cuteness the Supreme Leader Uncle Kim Jung Un.

    • @jimmy21480_midnight_special
      @jimmy21480_midnight_special 8 лет назад +3

      what the??

  • @SURVEYINGSURVEYING
    @SURVEYINGSURVEYING Месяц назад

    how to calculate rafter stand?

  • @simonrosoery9467
    @simonrosoery9467 2 года назад

    how do you work out A ? total run is 4940m which is B . Trying to work out A on a 12 12 pitch roof?

    • @michaelnauth
      @michaelnauth  2 года назад

      Not sure what you mean by 'A'. For a 12 in 12 roof, the Total Rise is equal to the Total Run.

  • @zero00044
    @zero00044 4 года назад

    Seems much easier to eyeball everything. Didnt understand half of this because things like trigonometry and calculus arent taught in all high schools and never in the basic math classes. Just the optional classes. Heck, I dont even know what trigonometry and calculus are. Most we got was algebra and I dont remember 99% of it lol.

  • @mickmac3360
    @mickmac3360 2 года назад

    There is no need to calculate the length of rafters and framers will not be interested in getting into the math. All you have to do is mark run and rise at right angles on the flat, put the rafter in correct position with respect to wallplate and ridge and mark as required.

    • @valhallanews5675
      @valhallanews5675 2 года назад

      What if you have a tall building with long rafters? Are you gonna climb and place 6 meter wooden studs at 10 meters above the ground while your assistant applies a tape measure? Don't be a fool.

  • @mrreason9697
    @mrreason9697 6 лет назад

    I'm really struggling with the rafter stand part ad the actual length, done some practice cuts and keep screwing up

    • @michaelnauth
      @michaelnauth  5 лет назад +1

      Hi David
      I am not sure how to help. Maybe you can give me the dimensions of the building and the slope of the roof and the lumber dimensions so that I can respond in context.

    • @jonienglish3231
      @jonienglish3231 3 года назад +1

      @17.00 Michael is making it Confusing
      Ridgeboard STAND = Total Rise + 4 1/2 ( HAP)
      then Subtract Width of Ridgeboard ( 2x8 or 2x6)= Ridgeboard Stand

  • @Chevy-ud1ec
    @Chevy-ud1ec 8 лет назад

    how did you come with the number 15Thanks Harvey

  • @leoayoroa7217
    @leoayoroa7217 3 года назад

    Good stuff

  • @jackf498
    @jackf498 5 лет назад

    how does the .839 get converted to 10in 1/16?

    • @00skeletor00
      @00skeletor00 5 лет назад

      Jack F .839 x 16 = 13.424 or 13/16 not sure where the 10 1/16 comes from...

    • @michaelnauth
      @michaelnauth  5 лет назад

      .
      839 ft. x 12 = 10.068", .068 x 16 = 1.09 which rounds to 1, hence we have 10 1/16"

  • @TR-rn3pd
    @TR-rn3pd 4 года назад

    Can you or someone tell me what the hip/valley line length ratio “secant “ is of a 5/12-8/12 bastard roof is . I don’t know if I’m doing the math correctly or not.

    • @michaelnauth
      @michaelnauth  4 года назад +1

      When calculating rafter lengths for an Unequal Slope Hip Roof, all measurements need to be made to the fascia line in order to maintain an equal projection on all sides. For the roof in question, let's call the 5/12 side the 'Side Roof' and the 8/12 side the 'End Roof'. For a Side roof run (to the fascia line) of 2' or 24", the rise would be 2 x 5" or 10". Therefore the End roof rises a total of 10" with an 8/12 slope and thus the End Run is 10" x 12 ÷ 8 = 15". The Hip or valley rafter then has a run equal to the hypotenuse of the 15/24 triangle or SQ Root of (15 squared + 24 squared) or 28.30". But it still has the same rise of 10". The length of the Hip/Valley rafter would then be SQ Root of (10 squared + 28.30 squared) or 30.01". [you can skip a step and take the SQ Root of (15 sq'd + 24 sq'd + 10 sq'd). The Hip angle is found by taking the INV TAN (ARCTAN) of 10 ÷ 28.30 or 19.5°.
      You can also take the ARCSIN of 10 ÷ 30.01 .

    • @TR-rn3pd
      @TR-rn3pd 4 года назад

      @@michaelnauth when calculating the run for the unequal slope hip. Do we use the run of the shallow side or the steep side.

    • @michaelnauth
      @michaelnauth  4 года назад

      @@TR-rn3pd When calculating the rise for the Unequal Slope roof, you would use the run of the shallow side, measured horizontally from the fascia line to the centre of the building.

    • @TR-rn3pd
      @TR-rn3pd 4 года назад

      @@michaelnauth made sense to me after reading your last comment a few times . Thank you for your help.

  • @sbk162
    @sbk162 8 лет назад +3

    can you do your calculation without using calculator

    • @michaelnauth
      @michaelnauth  8 лет назад +2

      To find the hypotenuse of a right-angled triangle you can use the framing square and similar triangles. For instance, locate 5" on the tongue of the square and 12" on the body and measure from 5 to 12 and you will get 13" which is the square root of 5 squared + 12 squared. Also this number is etched on the framing square on the body under 5". You would then take the RUN of the roof in feet and multiply it by the 13" and that will give you line length of the common rafter from the centre of the ridge to the outside of the wall which is where you will cut the birdsmouth of the rafter.

    • @sbk162
      @sbk162 8 лет назад

      thanks for the info

    • @nilsbruhner1983
      @nilsbruhner1983 6 лет назад

      Sketchup

  • @felixgonyo1809
    @felixgonyo1809 4 года назад

    Thanks for your teaching

  • @MedelGeorge
    @MedelGeorge Год назад

    Very helpful thanks

  • @framingvagrant
    @framingvagrant 2 года назад

    Simple. Thanks pal.!

  • @brianfield792
    @brianfield792 4 года назад

    Does measuring and cutting roof rafters have to be this difficult,I think not, get a good roofing square,
    read the numbers imprinted on the square,or learn how to read it, it will give you everything you need to know,
    including rafter length of any pitch down to the birdsmouth,

    • @michaelnauth
      @michaelnauth  4 года назад

      True - just follow the correct steps.

  • @brentstarkes9682
    @brentstarkes9682 3 года назад

    Well done!

  • @MH-qg1ky
    @MH-qg1ky 4 года назад

    So basically if you take trapezoid and a triangle and smack them against the wall it will turn into a circle. Is that what you're saying????

    • @michaelnauth
      @michaelnauth  4 года назад +1

      The trapezoid plus the triangle together make a Rectangle.

    • @MH-qg1ky
      @MH-qg1ky 4 года назад

      I was just trying to be funny dude

  • @JoseSanchez-xd1oz
    @JoseSanchez-xd1oz Год назад

    Thanks Michael

  • @mohamedissakamara6142
    @mohamedissakamara6142 9 месяцев назад

    Thank you Sir 🥰

  • @carpentryzucconiltd7875
    @carpentryzucconiltd7875 4 года назад

    Why making things complicated. In ancient carpenters brotherhood calculations, we calculate hypotenuse using your given run measurements Multiplied to the secant at your given pitch and that's it. Example your run measurement is say 345.8 cm and the pitch is 45 degrees, just do 345.8 X 1,4142 ( secant number from periodic tables at 45 degrees ) equal 489.03. that is exactly your hypo. However good lessons for beginners it yours.

  • @elfantasmadeatx8807
    @elfantasmadeatx8807 4 года назад

    I don't get how you get to 3/4 (19) from 12 ?

    • @michaelnauth
      @michaelnauth  4 года назад

      3'4" (19 mm) is one-half the thickness of the ridge board, which is 1½" thick.

  • @thakery5720
    @thakery5720 3 года назад

    So now I know why I was taught trigonometry....... still haven't found a use for algebra though........

    • @michaelnauth
      @michaelnauth  3 года назад

      Solving similar triangles is algebra in action. Anytime you use 'x'.

  • @JoseSanchez-xd1oz
    @JoseSanchez-xd1oz Год назад

    Good class

  • @kenjimrankin7485
    @kenjimrankin7485 7 лет назад

    hi useful refresher worked out roof in 15min thks, however i could have did it on the computer in 2min, and got my purlins sized into the bargin.

  • @cb-vp5gp
    @cb-vp5gp 4 года назад

    from where the 3/4 (19)?

    • @michaelnauth
      @michaelnauth  4 года назад

      3/4" (of an inch) is 0.75 inches or 19 millimetres.

  • @gabrielgonzales8163
    @gabrielgonzales8163 6 лет назад +2

    buenos videos
    construccion
    #1

  • @00skeletor00
    @00skeletor00 5 лет назад

    You can enter into the calculator 4sq + 3sq =25 2ndF sq = 5

  • @benl1612
    @benl1612 3 года назад

    can you please do one with millimeters instead?

    • @michaelnauth
      @michaelnauth  3 года назад

      Hi Ben
      I will work on an SI version (mm) and post it ASAP.

    • @michaelnauth
      @michaelnauth  2 года назад

      Hi Ben (sorry for the late reply). In the SI system, roof slope is stated as Rise : Run, but with the Rise being '1'. So a 6/12 Imperial roof slope would be a 1:2. Using that ratio, and Similar Triangles, a roof with a span of 8m (run of 4m or 4000mm) and a slope of 1:2, would have a Total Rise of 2000mm (or 1/2 times 4000) and a rafter length of 4472.1mm (√(2000² + 4000²)).
      For the same roof with a slope of 1:1.5, the Total Rise would be 2666.7mm (1/1.5 times 4000), and a rafter length of 4807.4mm (√2666.7² + 4000²)).

  • @emilyeilene
    @emilyeilene 9 лет назад +2

    Thank You for making this!

  • @Tigdude
    @Tigdude 8 лет назад +3

    The outside of a birds mouth does not sit flush over the sheathing, it sits flush over the top plate...😊

    • @russelleldridge3726
      @russelleldridge3726 7 лет назад +1

      And then your notching he plywood around every rafter?

    • @Tigdude
      @Tigdude 7 лет назад

      Some framers I've seen run the sheathing up to the the rafters, some up to the soffit nailer, I've never seen birds mouths' up against sheathing,
      Although after thinking about it, it's a good idea
      To not have to cut the sheathing to length. Unless you live in an area with high wind loads
      And have to install hurricane ties, which would have to be inspected before sheathing goes on.
      That being said....thanks for the input, and your
      Drawings, they're very nice.😊

    • @russelleldridge3726
      @russelleldridge3726 7 лет назад

      glenn underwood I always have sheathed walls and stood them up and then install rafters.....or I'll add an extra 1/2nor 5/8" to the seat cut so I can slide plywood up if the rafters are already installed

  • @guillo2388
    @guillo2388 6 лет назад +1

    You can bypass all the time-consuming math by using any drawing program and or using a Speed Square

    • @hillcountrylivin
      @hillcountrylivin Год назад

      Or you can take the time to understand the geometry behind the calculation and have a better understanding of the construction. Lazy and stupid is no way to go through life.

  • @moods5114
    @moods5114 4 года назад

    You have to come with some practical examples its difficult for new learners , like you have to out values and calculate

    • @michaelnauth
      @michaelnauth  4 года назад

      Check around 21.00 mins on the video.

  • @addaimartin6237
    @addaimartin6237 3 года назад

    And the professional carpenter know that they knows everything but not yet every day new are coming

  • @ebroevets9542
    @ebroevets9542 9 лет назад +2

    I think I'm just going to steam bend some long boards into shape...hehehehe then all I have to do is cut the birds mouth on them.

  • @jrquidi2572
    @jrquidi2572 4 года назад

    👍😎

  • @germaniumoxide6382
    @germaniumoxide6382 8 лет назад

    Are you Mr. Smith from the Matrix movie..!!!!!????

  • @Koumondji
    @Koumondji 9 лет назад +7

    wow, this is a lot of Math. Good knowledge tho, I just cannot keep up, lollll

    • @LouieHarmston
      @LouieHarmston 8 лет назад +2

      +Angelo Koumondji, lol don't even try to, this is useless information..

    • @majorkonfuzion1007
      @majorkonfuzion1007 8 лет назад +4

      +Angelo Koumondji me too my head is spinning.

    • @ArtisanTony
      @ArtisanTony 6 лет назад

      It is really not this complicated. It is basic math and can be done in seconds mostly i your head. You just need a basic calculator that does square root which every calculator does.

    • @omarcortez212
      @omarcortez212 6 лет назад

      Easy way ruclips.net/video/c4RtNkcH__Q/видео.html

  • @juginstr1019
    @juginstr1019 7 лет назад

    Great video!.Thanks a lot.

  • @jaferalmoosawi6116
    @jaferalmoosawi6116 3 года назад

    Thanks

  • @okusitinotahitua1020
    @okusitinotahitua1020 7 лет назад

    sounds academically steps by steps , the other carpenter don't know how to add 2 + 2

  • @russelleldridge3726
    @russelleldridge3726 7 лет назад +1

    I thought your video was awesome. I see a lot of people complaining and it's obviously because they only know how to do one thing. Take away their rafter book, and square and they are lost. I wanna see calculations for rafters with a ridge already set. How would you do that?

    • @Redandranger
      @Redandranger 6 лет назад

      Just subtract half the width of your ridge beam from the horizontal measurement of "B" before you use it in A2 + B2 = C2

  • @mafirearmsafety
    @mafirearmsafety 7 лет назад +3

    Gads! I don't feel like any of this is 'simple'......

  • @gerrigerbils1413
    @gerrigerbils1413 8 лет назад +1

    I still don't understand

  • @davidgentile4576
    @davidgentile4576 5 лет назад

    how about just laying it out on the slab itself. little math and actually gets done quicker

  • @mongychops68
    @mongychops68 Месяц назад

    You need to know how to calculate rafters to understand this video. 🤔🤔

    • @michaelnauth
      @michaelnauth  Месяц назад

      I hope that the lesson explains that clearly.

  • @edwardcharles9764
    @edwardcharles9764 6 лет назад

    This is a math lesson nothing more.

  • @chamroeunsdoeung4422
    @chamroeunsdoeung4422 4 года назад

    I'm not good at math, this video is not for me.

  • @marauderconvoymcoc4259
    @marauderconvoymcoc4259 8 лет назад +2

    If you Really want to learn about how to build a Roof - please look up the best " Larry Haun"
    Seriously - I fell asleep watching this video - then woke up and still the video was on when I woke up. Learn to teach - no disrespect to the author 😬

  • @atv55803
    @atv55803 Год назад

    4+3 =5 no it doesnt its 7

  • @nguyenhiep580
    @nguyenhiep580 4 года назад

    This was great, thanks, I been tryin to find out about "how to build rafters for a shed" for a while now, and I think this has helped. You ever tried - Beybigail Nonpareil Breakthrough - (just google it ) ? It is a smashing exclusive product for discovering how to create better sheds and improve your woodworking minus the normal expense. Ive heard some great things about it and my brother in law got great results with it.

  • @jeremyfoster6942
    @jeremyfoster6942 Год назад +1

    There are plenty of apps and ready reckoner books that do all this maths for you, even a basic knowledge of how to use a framing square will do the trick, this is archane and pointless

  • @microtrance1234
    @microtrance1234 4 года назад

    Many thanks, I have been researching "how far apart should rafters be on a shed?" for a while now, and I think this has helped. You ever tried - Beybigail Nonpareil Breakthrough - (should be on google have a look ) ? It is an awesome one of a kind guide for discovering how to create better sheds and improve your woodworking without the normal expense. Ive heard some awesome things about it and my co-worker got excellent success with it.

  • @addaimartin6237
    @addaimartin6237 3 года назад

    I like the way you are teaching