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Pitched roof calculations. Part 2 - Calculations 

Matt the Chippie Trainer
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Calculating the triangles in a pitched roof

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30 янв 2018

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Комментарии : 62   
@fongbrothers
@fongbrothers 6 месяцев назад
100 percent the most understandable explanation. THANK YOU!!!
@DesmoProfundis
@DesmoProfundis 4 месяца назад
After spending a solid work day messing around getting this wrong using all the right math, and then hours on RU-vid looking for someone with the answers I was looking for, finally here I am watching your video. Honestly, I'm glad I had this so twisted because now I will never forget what right looks like. I'm looking forward to going to work tomorrow and looking like a dang super star. Thanks!!!
@mattthechippietrainer
@mattthechippietrainer 4 месяца назад
I’m glad you found it helpful. Thanks for the comment.
@buhaysolarista2275
@buhaysolarista2275 2 года назад
Perfect! Just what I needed. Subscribed and thank you!
@amosmathias7051
@amosmathias7051 Год назад
Thanks Matt , love how you explain the formula 👍
@apatterson8128
@apatterson8128 Год назад
Extremely helpful and well thought out.
@eliantonioscaldaferri8465
@eliantonioscaldaferri8465 3 года назад
Excellent explanation, good.
@Stinkfistism
@Stinkfistism 2 года назад
great stuff. thank you
@stevenhughson1
@stevenhughson1 3 года назад
managed to work out my rafter size using your formulas many thanks steve.
@milwenguerra3666
@milwenguerra3666 2 года назад
Thank you! You did explained very well! 😁
@barrygaynor1025
@barrygaynor1025 Год назад
Thank you. Well done!
@aaron-hk8zg
@aaron-hk8zg 3 года назад
Thanks for the video really helped
@arifcankal3562
@arifcankal3562 3 года назад
Perfekt and very good 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻
@macasachristianp.8537
@macasachristianp.8537 2 года назад
thank you so much sir, it really helped me a lot.
@scottfroud678
@scottfroud678 3 года назад
Hey mate. I love the video, easy to understand, Thanks! What program did you use to draw those diagrams? I would like to drawer out some stuff like this.
@mattthechippietrainer
@mattthechippietrainer 3 года назад
This is just a power point that I have used so I could flick through while recording. On other videos I have used Sketchup free. That might be better for computer modelling.
@ramadossvenkatesan8872
@ramadossvenkatesan8872 2 года назад
easy to understand, god bless
@JoseSanchez-xd1oz
@JoseSanchez-xd1oz 2 года назад
Thanks for good video.
@ladytradiej8027
@ladytradiej8027 11 месяцев назад
So, if I'm in a roof and want to figure out the rise where do I put my tape measure? The X Y line? or the underside of the ceiling joist? Then where do I measure vertically up to? The Apex?
@SurajSobhanaTrolls
@SurajSobhanaTrolls Год назад
Thank you👍🏻
@vinopit
@vinopit Месяц назад
so on a speed square if we have 30 degrees i can use 6 pitch for common rafters?
@adebad1
@adebad1 3 года назад
Thanks Matt. I'm designing a roof but only have the run and not sure the angle or the rise. İs there a metric formula to determine those factors?
@mattthechippietrainer
@mattthechippietrainer 3 года назад
If you are trying to match an existing structure then hold a level against the roof at one end, then measure how high the level is at the other. Then you can calculate the angle.
@jaileermakers3362
@jaileermakers3362 3 года назад
Hey Matt, how do you work out the overhang geometric length? What is the formula? Cheers.
@mattthechippietrainer
@mattthechippietrainer 3 года назад
Same formula, watch from the 6 minute mark. just use the overhang from the plan for the run.
@connorramm1038
@connorramm1038 Год назад
Great video, is the a formula to work out the angle using rise and run which includes the size of timber being used, example a 6x2
@mattthechippietrainer
@mattthechippietrainer Год назад
No. The calculations are just geometric lengths. The size of the timber is then marked from the backing line.
@connorramm1038
@connorramm1038 Год назад
@@mattthechippietrainer thanks for the reply
@vinopit
@vinopit Месяц назад
my question is about metric speed square? in imperial pitch is rise per 12 inch run. whats how is it in metric?
@olegoleg8652
@olegoleg8652 2 года назад
perfect
@cameronhesling6189
@cameronhesling6189 3 года назад
Hello mate I’m building a little porch tomorrow and need to work out my top ledger to attach my rafters to my wall plate how do I work out how high the rise is for me to put the ledger at with it being 40°
@fidelnefy
@fidelnefy 3 года назад
30º degrees is a standard angle or why did you use this angle?
@mattthechippietrainer
@mattthechippietrainer 3 года назад
I selected this angle at random. There is no special reason for it.
@aaronbenz3694
@aaronbenz3694 2 года назад
What is a common birds mouth size? Taking the birds mouth to maximum depth which would be a third of your timber ? Does that change the pitch?
@dadattitude5918
@dadattitude5918 2 года назад
No it doesn’t change the pitch. You only need a bird’s mouth cut big enough so that the rafter sits on the top plate properly.
@vinopit
@vinopit 3 года назад
What software are you using
@mattthechippietrainer
@mattthechippietrainer 3 года назад
It's just a power point that i recorded on screen.
@silvanskodingo5221
@silvanskodingo5221 2 года назад
What calculator are you using because my Samsung calculator gives me 166.6666666667 when I divide 5000mm by 30 degrees? Am not good in mathematics and I find calculating the pitch of a roof as one hell of mathematical conundrum that has outstretched my foraging mechanisms.
@mattthechippietrainer
@mattthechippietrainer 2 года назад
Samsungs work differently to other calculators. You may have to put brackets in the right places to get it working. You can also use a triangle solving app. Trigsolver or something similar are very easy to use.
@aldrinpadua28
@aldrinpadua28 2 года назад
What if there is no given degrees at the moment? how to get the degrees. I have only the RUN and the SPAN?
@mattthechippietrainer
@mattthechippietrainer 2 года назад
Normally a set of house plans will give you the pitch. If you are trying to match something existing and you don’t know the pitch then you can get a height measurement and work out the pitch from that. Watch the video from the 10 minute mark for the formula.
@markleeks1116
@markleeks1116 2 года назад
I use a calculator most of the time. Yes from bird's mouth to ridge is 5.773 m. ( Less half the ridge) Rise = 2.885 2.885 / 5 = 0.577 INV ARC (tangent) 0.577= 30° Love mathematics!
@mrrmut57
@mrrmut57 2 года назад
Hi Matt, If my span is 5200mm and my geometric length is 7100mm what is my angle and what is my rise please?
@markleeks1116
@markleeks1116 Год назад
I d help but what do you mean by the 7.1 m
@philmyglass8103
@philmyglass8103 3 года назад
Good video Matt ... be better if you showed the calculation to find an angle/degree° using tan on a random set rise and run, just saying!
@mattthechippietrainer
@mattthechippietrainer 3 года назад
This is covered in the video from about the 10 minute mark.
@philmyglass8103
@philmyglass8103 3 года назад
@@mattthechippietrainer ahhh i didn't get that far in the vid....doooooh!
@gaganpreetchahal4390
@gaganpreetchahal4390 6 месяцев назад
Hey I am planing to starting my business of roofing can you how to messure roof for charge
@matingpamathew1986
@matingpamathew1986 3 года назад
Halo do u have any drawing foe this.
@victorinteriorpessah771
@victorinteriorpessah771 2 года назад
Who type of calculate are you using iwant to download it
@mattthechippietrainer
@mattthechippietrainer 2 года назад
I didn’t download it. It was just the one that was already on the computer when I got it.
@victorinteriorpessah771
@victorinteriorpessah771 2 года назад
@@mattthechippietrainer my calculator is working like yours but like your formula
@DescendantsofBossaya-lj5ox
@DescendantsofBossaya-lj5ox Год назад
Simple but difficult for some of us . I want you to help us without using calculator, how to find the height of a roof when the pitch angle is only given
@mattthechippietrainer
@mattthechippietrainer Год назад
Have look at this series which shows how to cut a roof without the calculator. ru-vid.com/group/PLnaiMNCN8n7PZPn6TBpyiyWBspkR2HBf6
@steveocampo5160
@steveocampo5160 2 года назад
3:55 someone explain??
@sathishjay8405
@sathishjay8405 4 года назад
How do i calculate......wall A 7 ft and wall B 6 ft......distance between wall is 4 ft,....now what is slope distance of the walls from 7ft to 6 ft?
@mattthechippietrainer
@mattthechippietrainer 4 года назад
4ft is your "run". The difference in height is 1ft, this is your "rise". watch this video from the 8 minute mark. Hope this helps. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-z3zWsAzvNng.html
@DADunkin200947
@DADunkin200947 2 года назад
STANDARD MEASUREMENT, PLEASE.
@E-E.ADVENTUREGEARS
@E-E.ADVENTUREGEARS Год назад
Are you based in aus?
@mattthechippietrainer
@mattthechippietrainer Год назад
Yes I am. 😊
@pardeepsaini5896
@pardeepsaini5896 5 месяцев назад
I was looking for the same thing😊 Btw thanks
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