How To Make A Perfect Right Angle [3-4-5 Method]
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- Опубликовано: 31 май 2024
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In this video, we show you how to create a perfect 90-degree corner (right angle). It is also called the 3-4-5 method.
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Video © 2015 SKS Media. Videos produced by SKS Media (House-Improvements.com) are provided for informational purposes only. The information contained in the videos is intended to give general guidance to simplify DIY (do it yourself) projects. Because tools, products, materials, equipment, techniques, building codes and local regulations are constantly changing, SKS Media cannot and does not assume any responsibility or liability for the accuracy of the information contained therein. Further, SKS Media will not accept any claim for liability related to, but not limited to, omissions, errors, injury, damage or the outcome of any project. It is the responsibility of the viewer to ensure compliance with all applicable laws, rules, codes and regulations for a project. The viewer must always take proper safety precautions and exercise caution when taking on any project. If there are any questions or doubt in regards to the element of a project, please consult with a licensed professional. SKS Media conducts all matters in accordance with the laws of Saskatchewan, Canada. 
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There are a bunch of mediocre and bad videos showing this method. You did a great job!
Thank-You! As an architect I know of the theory, but I have never done it, I barely remembered the 345. I am due back in an hour and will check it.
Thanks man, Im in a millwright program and you explained this way better than my teacher did!
Once again, you explain the method extremely well. Thanks Shannon!
This video really breaks things down into simple terms! Thanks for the great tip on making sure you have the perfect angle.
I love your videos. I watched the drywall series a few month and I can't wait to get the opportunity to get to use that information.
Yo i love your videos
We have to watch this for school maths and this helps so.
Thank you so much.
I just showed this video in my surveying class. Very cool stuff, thanks for uploading.
Thanks, I just needed a quick refresher on this, so I can get my retaining wall in square to the property line. Appreciate your comment below about making sure to measure on the level, which I might have forgotten.
Thanks for the refresher. So nice of you to do these videos.
Great explanation and demonstration. Simplicity is the ultimate sophistication.
Thank you so much... Your videos are direct to the point and very well presented.
This is just what I needed to run a fence in a pasture. I'm using 30 40 and 50 feet. Thanks for the video, big thumbs up.
Try to measure as level as possible because measuring on a slope will throw things off .
hey man I really really appreciate all the videos and information you provide!!! Ive been a homeowner for twenty years, and before you tube any time I tried to fix anything in my home, it would turn out to be a complete disaster!!
Much better video than all those whiteboard intructions!
Very useful tip. Thanks very much. Im making an L shaped low level garden wall around some decking and this looks like the method I will use to build the 2 walls at a right angle. Cheers.
What a great tip. It seems quite intuitive but it's not something I would think of doing (not the best at trigonometry). I am starting to build a box for my new whirlpool drop in tub and I will be using this trick for the box. Thank you Shannon.
The best part about this method is that as long as you use the same multiplier for all 3 sides, the result is always the same and the numbers are whole! x1=3,4,5 x2=6,8,10 x3=9,12,15 x4=12,16,20 and so on. The original idea behind this method was to eliminate the use of fractions and keep it simple, but feel free to define one side and calculate the other 2 sides.
I'm going to have your knowledge one day. That's my life goal!
Thanks, this will be helpful on my next project.
Thank you so much .. so simple . but gratefully received. greetings from England
Your method is a lot more simple and fast compare to what they taught me at school! LOL In school they just make it so complicated specially if you're alone. Great video and thank you for all your good tips, you've got yourself a new subscriber!
Nice and simple. Thanks from Australia.
Taught me something new! Thank you Sir!
Super cool use of triangle laws.
Great explanation, well described, thank you.
This video really helps a lot thanks 👍🏼
Great video thanks, so useful, so simple when you know how. One thing though - there is really absolutely definitely no such word as “anywayS”!
Thank you Shannon!
thank you very much for the tips.
Thanks for the video Sir
Awesome bro and very simple method you are using.
Thank you so much.
you are welcome
HouseImprovements add some good video's .
It will help me in shuttering.thanks
Nice job explaining
Thanks for sharing
Excellent.
Great video..thanks alot
very very simple method, thanks a lot brother
right angle blub
Thank you
thank you. like your videos
Thank you so much
Thanks, … very helpful.
Well done
Thanks a lot sir
Good job 👍
Superb
Nicely explained!
Thanks well explained.
Thanks well explained.
Thanks
fast and simple !
Thank You, ,
thanks a lot.....
Thanks to shar it
we always got taught to use the tape as pivot point and draw a arc and where they cross, its 90 degree and then snap a line, i've also got taught to do 2 for larger work to. this method where u adjust the tape measure to get them square is new to me.
Billy S could you please explain the tape measure pivot idea to get a right angle....i dnt see how that would work...but would like to see it used
You are Tha BOSS
tnx a lot
Having just come inside from an unsuccessful attempt to lay out guides for a rectangular platform's posts, I'm grateful for this video! Thinking about the Pythagorean Theorem as 3,4,5 helped, as did watching you use a level and tape measure to do this by yourself. Does anybody have tips on doing this when your ground surface is dirt and unevenly sloped? I can't grade the surface, because this is for a treehouse and, well, the tree is in the middle with all its roots!
Probably too late for you, but for any future readers: you can use a "water level." That is, a length of hose with water in it, and some clear tubing at each end (or entirely clear tubing, if you have it). Fill the hose with water, and hold the two ends apart. The water at each end will be at the same level. (Larger-diameter hoses will "settle down" faster. Prefer 3/4 over 1/4 tubing.)
This is nice for a tree house because you can wire the hose to the tree, and you can bend the hose however you like in the middle (just keep the middle lower than the ends).
Love these long-term discussions on youtube. We come to it as we need it. Another method that works for posts if you take a string and stretch it to mark the distances on the string, and then attach a level to the sides of the triangle.
very fast and simple
Love it
Learned this on This Old House.
Adam R and?
+Robert Sheffer and he's never used it... I think I have, once. The laser I have makes this sort of unnecessary for me.
Very good idea....nice
Thanks a lot
It works
Thank you for putting g it in easy terms and thanks for letting me know it can be bigget. I assume I could do 3 ft or 6 ft or 9 ft ands increase the others ??
Jerry Sparks 9+12=15
Very good my frnd
Long house any 3*4fit and than final 90 digri right
so what is the square for?
You from Saskatchewan area?
Hi Shannon the only thing I don’t get is how do you know if the first line that you chalked is straight? Doesn’t that have an impact?
In this example the caulk line will be straight and it is parallel to the homes foundation because we measured out from the foundation at the two ends of the caulk line equally.
cool
Do you think the set square leaning on the hose played a part
Thank you, is this the same as 3 block method? Asking for a friend
Never have heard of that?
Is this method work for "cm / m " measurement ? Thanks before 🙏
Yes it will work on any measurement . inches, feet, mm, cm ,M,
@@HouseImprovements thanks
Goood
Eny one know how to make a 45 degree with meter ( if it s possible?)
Not exactly sure what your asking, but if you come to the forum we can figure it out for you.www.house-improvements.com/forums/
What about 45 degree?
Well explained so was helpful, but the visuals didn't match the audio advice, which is a shame, would be more helpful if you make a new version showing the actual marks in close up as well as everything else you need to highlight, but thanks anyways.
Noted!
The only thing is that your initial strait line is perfect!
Awsome bro?
We haven't heard from you in a while. what's up? You didn't go and cover everything in home improvement did you?
+Maxid1 Sorry ,we have had a crazy summer and shooting videos has been tough to fit in. We still have some planned so please keep watching. We for sure have more things to show everyone!
+HouseImprovements That's great news! New subscriber here, and I love the fact that you do everything in detail; even showing your mistakes and how you correct them. Really liked your videos on how to make a deck. Keep up the good work!
It's a classical method without laser
Do it yourself, go to stodoys and learn how to make it.
Harder to do on unlevel grass.
cjpenning ...not really...yu can do it...just use string line and short peices of rebar stakes...get the string line as close as yu can to the grass without touching, once yu got your lines square use florecent spray paint and spray directly on top of the string line and ther you go'...you just marked your layout onto your lawn'
Pythagorean theorem
Nick Pantazis Ol' Pythagoras. You can always count on a square deal from him.
I just have a stupid ? I guess I could use this 345 rule square up a deck. For example a 8x16 deck.
Yes. or measure diagonally from corner to corner. The two diagonals should measure the same if the deck frame is square.
Pathagorean Theory?
+Jared Waterman Yes it really is. 3,4,5 is just easier to remember.
Pythagorean theorem baby
First of your 90 or 3,4,5 isn’t straight because you pulled your control line or original line of a concrete wall and we all know concrete walls dip and aren’t very straight
Jonathan Ruiz what the hell does dips in the slab have anything to do with getting a right angle...nothing'
He said he snapped a chalk line.
@@joshramirez853 Dips in the slab will make a slight difference, because they can cause your tape to shorten. It could be an issue for someone doing 30x40x50 feet, but not here.
23 ft,18ft,16ft=????ft
I feel so stupid
Im using woodprix instructions to make it and I do it already :)
STUPID!! DO IT!! DONT PRETEND TO DO IT WITH YOUR POINTER THINGEE
Not sure what you're talking about? I think you commented on the wrong video?
Be careful with your titles, because thats way far from percet, i was searching something perfect to 0.001 degree of precision -.-
If measured precisely and perfectly on the level it should be bang on.
I'm going to have your knowledge one day. That's my life goal!
😐😊
Thank you sir
Thanks
Thank you
your welcome