As a 50-year carpenter, I was one of the first guys on the job in the mid-80s with a Construction Master 1 calculator. (Intially, many thought I was doing voodoo!) And I've been using them for the last 39 years, so I followed you all the way. I would like to humbly make an assertion that may simplify some of your calculating. When you want to figure out the plum cut dimension: First enter the determined pitch: (48.85) Then enter the 2x6 board width (5-1/2") as the run. The diagonal then represents the plum cut height. (8-3/8") I'm 70 years old now, and enjoyed following you all the way with the CM-5 app on my phone, while sitting here watching the video. Math, properly applied can save a lot of leg work and measuring on a job. Keep up the good work!
Kyle, a couple comments FWIW: - The steel can fail before the building fails, so the cross bracing gives you extra margin. - If a structural engineer was reviewing it you would likely need a set of cross braces in the middle of the long wall. - Your braces would give more strength if they were terminated at a girt. This goes for the X-braces as well as the kickers. - With the double-X the middle isn't broken into triangles, so you are requiring the nails to provide a moment connection which they won't do. - You would get a better structural connection if your bottom cross brace (at a minimum) was cut at a square, so the center line of the 2x is pointing to the girt and not above it. Also gives more nailing area. Just an electrical engineer, but do have an architectural engineering background.
totally agree. You would probably see even more bays braced-off : doubles bays in the corners, one or two along the long walls, and also some horizontal cross bracing below the roof to lock in the building in all axes.
The construction of the whole building was amazing and done in such a short time., I agree with your bracing suggestion and also the suggestion for horizontal bracing under the roof structure. The thing that worries me is that there is no bracing as best I can tell against side wind forces in the middle of this long building. Normally in shorter buildings the ends walls provide that stability. To me it looks like the only thing stopping the building being pushed over in the middle are the steel brackets holding the uprights vertical. I don’t understand much about building structure so am probably wrong. Appreciate it if someone can enlighten me!
Great write up, while the gables and corners are currently braced, you need to consider what happens if they fail additional cross bracing on a roof and walls on a building this long provide a ‘modular’ bracing solution should a part of the building fail.
@@fredturk6447 The long walls get their lateral strength from the columns flexing. It is a lot of force by the time you get to the middle... but I'm not qualified to say if additional bracing is needed there.
Geometry and trigonometry are some of the most important classes one should take in high school. People use these math concepts without even realizing it in their day to day lives. Organizing a house or office, building anything, creating a web site, installing a garden, just about everything can make use of geometry and trig. These are really important learning skills and I wish teachers would make them more interesting so students would want to learn. I watched the entire construction geometry part, smiling the entire time.
A few months ago, I was helping my son with his homework on calculating the angles in a triangle. It's great to see a practical application of geometry in action. Thumbs up.
You should write a workbook on the construction of these buildings (Framing of the buildings). Include 1-2 methods of doing things, including your math. Aim for a spiral backed book to lay flat on surfaces. Use an apendix at end to explain the principle of the maths eg. complementary angles etc. Also an apendix for the simple tools you use (levels, nails, screws, plumb bobs etc). Maybe a second book on metal folding, turning 2D into 3D structures for roofing and siding. For the 2x4 on top of the web of the roof truss. For your stiffener board, ask your engineer about what the results of putting a stiffener on both sides of the roof truss (that needs reinforcing), essentially turning it into a i-beam.
Kyle, It is your skills and your build. What people think, is not the concern, at the end, it is your name on the build. You are just incredible framer. Everything you do, make sense. Job well done.
One of the hardest parts (for me) of DIY building our three structures was figuring angles for the bracing boards. Thanks for showing the right way to do it. I had to resort to "guess and check engineering" to get mine done!
Bracing is crucial. Yes, the exterior finish helps, but that is not it's main purpose. In the unlike event of the metal exterior needing to be changed, you cand just unmount the whole side and redo the metal without thinking of structural failure. In europe, when they do metal warehouses, they allways take into consideration bracing. The first, the last and the middle bays are allways braced. That way you have a rigid structure holding everithing in place. In your case probably every other bay should be braced or every 3rd bay. But this is where you contact your local engineer. The problem with long structures is that the longer the bigger the rocking force on the long end. That is why you would need extra bracing.
For anyone that wants math in text here you go: Example: 4" floor 16' 6 1/2" - 4" = 16' 2 1/2" / 2 = 8' 1 1/4" Rise = 8' 1 1/4" Run = 85" Diagonal = 10' 9 3/16" Pitch = 48.85 90 - 48.85 = 41.15 // You are calculating for the new pitch (NewPitch) NewPitch = 41.15 // This is the new pitch NewRise = 5 1/2" // This is the new rise which is the width of the board you are using. NewDiag = 8 3/8" // This is the new diagonal that will be used to find FinalRise Rise - NewDiag = FinalRise 8' 1 1/4" - 8 3/8" = 7' 4 7/8" FinalRise = 7' 4 7/8" FinalDiag = 10' 3" FinalPitch = 46.28 Now punch this into the calc for Rise, Run will still be 85" then you will see FinalDiag and FinalPitch. Example: Rise = 7' 4 7/8", Run = 85" == Diagonal: 10' 3", Pitch: 46.28
@@A..n..d..y Hey sorry for the late reply, that is being accounted for in the NewPitch and NewRise. You take that new diagonal and subtract that from the rise which gives you the final rise.
Re-watched the math. Always love learning how to calculate angles for home projects. Would be awesome to see a video with just math calculations for weird overhangs and what not.
I learned in school, if you did not know how to do the math w/o a calculator you did not know math... I used to know math, lol. Know it is all about apps/calculator. Watching your videos for quite a few years, I thought I was a perfectionist with tolerances and measurements but you take the cake. I stopped being such a perfectionist when I realized one day, with organic structure, expansion and contraction, heating and cooling, continuous drying out of the materials, settlment and natural compaction, nothing will be "perfect". I do not know how much time I wasted trying to be perfect. I however do strive for as good as quality as reasonably possibly w/o breaking the clients bank. I enjoy your videos. Its got to be hard for Greg to work with you unless he is the same, lol. Great idea for a video, show us your mistakes, we all make them. So we can learn from them or how to fix them. You have shown very few, and in this industry I know there is alot, some not even the builders fault. Thanks again.
My 8th grader literally just walked in and asked for help with his math homework finding angles given one angle right as Kyle was drawing his diagram. I said “just watch this” 😂
Regarding the math, a subtle inaccuracy is that you used the angle determined by the diagonal of the brace (from long point to long point) but then applied it to the edge of the brace (from long point to short point). Obviously a small enough deviation that it will still get you quite close to your desired height for the resulting X brace. A more exact answer would require some algebra, more than can be easily typed out here.
For the cross brace that transfers the lateral loads there’s something kind of cool to point out. With trusses you always want triangles, no squares. The reason for this is every point load gets distributed as pure compression or tension on every board of the truss and removes any “bending” loads. It makes the structure incredibly strong.
You didn't lose me!😃 Another way to figure out rise/run if you know one of the legs and one of the angles is to do a little trigonometry with sine or cosine depending on which leg & angle you know. Love watching your content!
Kyle, Math doesn't lie. It isn't that bad, and as you said using the calculators available today make this so simple. Bracing 100% makes a difference. A few people suggested building a scale mockup and using it with/without bracing. It does matter.
Kyle, from an engineering point of view, and realizing that most cross brace before steel goes on, is needed to resist non plumb structure. We do the same on steel structures even though we are putting on concrete skins or other types of skins. Ultimately is adds to the shear and is needed in extreme cases of wind where sheet metal will fail.
I do this every day so I was right there with you framing is fun and there are so many tricks of the trade i like to sit and figure them out beforehand. It makes the job easier and clean and efficient 💪👍👍
Typically here anyway, the truss manufacturer will identify the required bracing in the installation blue print. Logical is not always what they want. If you are trying to save money, this area will not. This will work well for typical storms and snow loads but an aggressive tornado or hurricane will pull the building apart. Impossible to build a all storm resistant super structure but we do what we can. You covered it well, thanks.
I like seeing the real world applications of math. I thought you were using a scientific calculator until I you showed a close up. Carpenters are good about breaking math into simple concepts. I'm in school working towards engineering and I wish I could break the concepts down as simply. I'm at a point where I'm past the total comprehension of what's going on and into the "trust me, it works" territory. So it's nice seeing the simple stuff.
I think your math lesson was excellent, Mr. Construction Man. I was a teacher and I believe (as you do, I can tell) that a good lesson is useful and, well done (as you do it) it is also entertaining. I wish I could do the personal 'construction' I did when I was young and still had my land, over again. I would do things more wisely. Thanks for the videos, guys. :)
Agreed. I would probably scribe it like others are saying (especially in a hurry), but I love learning the math and using it to double check my work or do it the “right” way if I have time.
My thoughts are that for the youngsters and teens that watch Kyle, and are interested in the trade, this might be motivation for them to pay attention in math class.
32:20 seems like rather than nailing the 2x4 to the top of the truss, if you nailed it to the side of the truss and formed a "T" then you get the entire strength/length of the 2x4 as resistance rather than just the nails you put into it
Regarding the math, as a graphic designer I grab my laptop,launch adobe illustrator, draw the rectangle and the plank to scale and the angles are calculated in a minute. Then use the speed square the mark my cut line. But nice to see how the pros take it on. Also, holy smokes, if I had to use inches I would have a melt down! Grew up with metric.
The math is great when you're working in plumb and level, thats where it works best. When your working on old settled buildings ya gotta do the old scribe trick though usually or even use some "cardboard aided drawing" taping up a template on weird shapes to make something that actually fits perfectly imo
Well it’s funny….my oldest boy and I just got done doing geometry together (haven’t done it in 20+ years) took us a min to get it together so to answer your question….yes I stayed with you and knew about half of what you were saying…lol. Good guys!
Hello and you Guy's are Super Men and I've never seen Two Men take on A Big task as Massive as you Two Guy's Has and Completed the Whole Job start to finishing . That's exactly why I say you Two Men Has Super Power's and you are very intelligent 🤓 thinking 🤔 and Figuring it All Out as each and everything is being Done 👍✅ .
the kicker makes more sense upside down... they are to stiff the roof against wind load from outside... so they need to push into the building. at the moment they are pulling on the nails at the top that are nailed into the end of the board.
Enjoyed the math, but I think it's wrong. 48.85 is the angle between ground line and the imaginary line that connects the longer points of your cross member, not the angle with its sides. At 10.75 feet away, the error is unnoticiable, around 1.2 degrees. Just to let you know, I payed attention... Thanks for sharing, love your videos.
16:00 I bet just filling the bay cavity with closed cell expanding foam insulation would do more than those cross braces (at a much higher price point though), but I'd love to see some actual experimental data on that. I think structurally the ultimate post frame would be steel skin with walls filled with CCEF insulation.
I made it thru because I've been a carpenter my whole life. 😊 My opinion is those walls should be X braced and the trusses should have rat run on 12 ft centers the length of the building and the gable ends should be braced off of said rat run.
Regarding the corner bracing. My thoughts are corners are most susceptible to negative windload sucking on that steel. And while not likely, if strong enough that could peal off some of the steel in the corner. And if this happened the bracing is still there to help. It is a bit of a belt and suspenders under normal conditions, but in worst case it's sometimes nice to have the backup if the other were to fail.
I don't use all of that math when doing things like this. I will measure the height and divide it in half and then stick a board up and mark the back side against the post. That board after I cut it will be my template. Simple, done and less thinking about it.
For fun, you should do a kicker one post over from where it should be….complex angles. Your cuts will not only have a calculated angle, but a bevel. A fun challenge. I bet you get it though.
Why not put the second diagonal in the adjacent bay so all diagonals are flat against the inside of the girts. Seems like that would avoid blocks and toe-nailing and use all the girt attachments for better shear strength.
I agree with your thought that it's a complete waste of time to brace those corners. You can certainly get away with 2 45's instead of 8. . I would connect those trusses in more spots the long way through the building in the bottom instead of along each truss. They won't all bend together.
Great video as always. In my experience steel strap bracing on the outside would be more efficient to install and be much stronger. I feel like a brace under tension works better than a brace under compression because under tension there's the risk of buckling. The sheeting would do some bracing but because its got ridges its not really working as a diaphragm as it is easy to deform under stress. My two cents worth. Always interesting seeing the different way people tackle a problem.
I wonder if it would make sense to put those webbing stiffeners in before hoisting them up to the top of the posts. Like tip them vertical on the stack with the Magni, maybe drop them to the ground, install the stiffeners, then fly them into place. I think it might be faster than having to do it from the megadeck.
Even if they used a 2*14 on those truss webs it wouldn't add much strength to resist the bending moment in that direction the "L" shape of the geometry on those braces is where the stiffness comes from, just think about how hard it is to bend a 2*4 on end vs how floppy a 2*12 is laying flat. So in that case it's the geometry not the amount of lumber that adds strength so there would be no good way for the truss makers to add that and still be able to stack the trusses on the truck.
I bought an engineered steel building which has very similar construction with posts, trusses, girts and purlins with a steel skin. The each side of the roof and both side walls each had steel rods doing x-bracing in one bay each. I suspect there is a reason the engineer added these.
Got a feeling the cross brace theory is similar to those earthquake braces like in Japanese wooden house constructions, it gives it the rigidity even if it cost a bit more... I imagine the wind load where ya at is also pretty high...
I would not want to rely on the steel to resist lateral forces perpendicular to the channels rolled into it. It's flexible in that direction, both in tension and compression. Not to mention that the total strength you get from the steel depends entirely on the screws not snapping or wearing their holes oversize and weakening the wood around them.
Knowing and understanding the “WHY” behind your trade discipline is the difference in being a journeyman or an apprentice. Does the metal manufacture provide a sheer value for the walls completely covered with their product ?
Not a builder, carpenter etc, the corner math made sense. Now as square as your building is you should only have to scribe 1 board then go back to the pile to make the rest of your cuts. Thanks to editing if you made a mistake you could have just re-filmed the process LOL Looking forward to some more RRHQ 2.0 videos
Regarding the Maths lesson! 😢 I actually enjoy that part of your builds and confidence, that the Maths never lies! Maybe I have ADHD lol😂, I would've just held and scribed my own braces! 😂
The bracing called out on truss drawings are for a qty of 1 truss. Design software doesn’t care how many trusses there are. “T” or “L” bracing is for that 1 web, not for the structure. You still need some structural permanent bracing
Honestly, it's neat to watch you figure that out, but I would have measured it out, snapped a line, found my angle, then measured it out again. I wouldn't have thought to put up x braces. I would have put it half way up in 1 Bay then from half to top in the next. Might have even used 3 bays to reach bottom to top
Was just about to write the same :/ It was on the last of this series episode also. The gate ratio is set way to high and it feels like I'm loosing the audio for every second word.
As a 50-year carpenter, I was one of the first guys on the job in the mid-80s with a Construction Master 1 calculator. (Intially, many thought I was doing voodoo!) And I've been using them for the last 39 years, so I followed you all the way.
I would like to humbly make an assertion that may simplify some of your calculating.
When you want to figure out the plum cut dimension: First enter the determined pitch: (48.85)
Then enter the 2x6 board width (5-1/2") as the run.
The diagonal then represents the plum cut height. (8-3/8")
I'm 70 years old now, and enjoyed following you all the way with the CM-5 app on my phone, while sitting here watching the video.
Math, properly applied can save a lot of leg work and measuring on a job. Keep up the good work!
Kyle, a couple comments FWIW:
- The steel can fail before the building fails, so the cross bracing gives you extra margin.
- If a structural engineer was reviewing it you would likely need a set of cross braces in the middle of the long wall.
- Your braces would give more strength if they were terminated at a girt. This goes for the X-braces as well as the kickers.
- With the double-X the middle isn't broken into triangles, so you are requiring the nails to provide a moment connection which they won't do.
- You would get a better structural connection if your bottom cross brace (at a minimum) was cut at a square, so the center line of the 2x is pointing to the girt and not above it. Also gives more nailing area.
Just an electrical engineer, but do have an architectural engineering background.
totally agree. You would probably see even more bays braced-off : doubles bays in the corners, one or two along the long walls, and also some horizontal cross bracing below the roof to lock in the building in all axes.
This guy engineers
The construction of the whole building was amazing and done in such a short time., I agree with your bracing suggestion and also the suggestion for horizontal bracing under the roof structure. The thing that worries me is that there is no bracing as best I can tell against side wind forces in the middle of this long building. Normally in shorter buildings the ends walls provide that stability. To me it looks like the only thing stopping the building being pushed over in the middle are the steel brackets holding the uprights vertical. I don’t understand much about building structure so am probably wrong. Appreciate it if someone can enlighten me!
Great write up, while the gables and corners are currently braced, you need to consider what happens if they fail additional cross bracing on a roof and walls on a building this long provide a ‘modular’ bracing solution should a part of the building fail.
@@fredturk6447 The long walls get their lateral strength from the columns flexing. It is a lot of force by the time you get to the middle... but I'm not qualified to say if additional bracing is needed there.
Geometry and trigonometry are some of the most important classes one should take in high school. People use these math concepts without even realizing it in their day to day lives. Organizing a house or office, building anything, creating a web site, installing a garden, just about everything can make use of geometry and trig. These are really important learning skills and I wish teachers would make them more interesting so students would want to learn. I watched the entire construction geometry part, smiling the entire time.
Kyle, I taught in a high school shop for 33 years and you're math and teaching method is spot on. Well done!!!
Wow, thanks!
As a math teacher, you did an excellent job explaining the angles and dimensions. Followed you the whole way. Math never lies.
A few months ago, I was helping my son with his homework on calculating the angles in a triangle. It's great to see a practical application of geometry in action. Thumbs up.
💯% watched ALL the math! I really appreciate how in-depth you go with these videos!
Dad and I always called those kickers as well since way back in the 70’s😊
Gotta give a shout-out to your camera guy! Knowing where the "story" is gets us the angles and shots we expect to see. Bravo! 🎥
I got through all of the math. LOVE IT, LOVE IT!!!
You should write a workbook on the construction of these buildings (Framing of the buildings). Include 1-2 methods of doing things, including your math. Aim for a spiral backed book to lay flat on surfaces. Use an apendix at end to explain the principle of the maths eg. complementary angles etc. Also an apendix for the simple tools you use (levels, nails, screws, plumb bobs etc).
Maybe a second book on metal folding, turning 2D into 3D structures for roofing and siding.
For the 2x4 on top of the web of the roof truss. For your stiffener board, ask your engineer about what the results of putting a stiffener on both sides of the roof truss (that needs reinforcing), essentially turning it into a i-beam.
Kyle, It is your skills and your build. What people think, is not the concern, at the end, it is your name on the build. You are just incredible framer. Everything you do, make sense. Job well done.
Loved watching the math. To me it proves how square you stayed vs. scribing them and just putting each board up individually.
One of the hardest parts (for me) of DIY building our three structures was figuring angles for the bracing boards. Thanks for showing the right way to do it. I had to resort to "guess and check engineering" to get mine done!
First! Now build Greg a house!
Agree. Let's get this post up in the thousands. No pressure Kyle!
ya missed it.
Send him the money
@@daveklein2826gullible
You pay for it and Kyle will build it
Bracing is crucial. Yes, the exterior finish helps, but that is not it's main purpose. In the unlike event of the metal exterior needing to be changed, you cand just unmount the whole side and redo the metal without thinking of structural failure. In europe, when they do metal warehouses, they allways take into consideration bracing. The first, the last and the middle bays are allways braced. That way you have a rigid structure holding everithing in place. In your case probably every other bay should be braced or every 3rd bay. But this is where you contact your local engineer. The problem with long structures is that the longer the bigger the rocking force on the long end. That is why you would need extra bracing.
For anyone that wants math in text here you go:
Example: 4" floor
16' 6 1/2" - 4" = 16' 2 1/2" / 2 = 8' 1 1/4"
Rise = 8' 1 1/4"
Run = 85"
Diagonal = 10' 9 3/16"
Pitch = 48.85
90 - 48.85 = 41.15 // You are calculating for the new pitch (NewPitch)
NewPitch = 41.15 // This is the new pitch
NewRise = 5 1/2" // This is the new rise which is the width of the board you are using.
NewDiag = 8 3/8" // This is the new diagonal that will be used to find FinalRise
Rise - NewDiag = FinalRise
8' 1 1/4" - 8 3/8" = 7' 4 7/8"
FinalRise = 7' 4 7/8"
FinalDiag = 10' 3"
FinalPitch = 46.28
Now punch this into the calc for Rise, Run will still be 85" then you will see FinalDiag and FinalPitch.
Example: Rise = 7' 4 7/8", Run = 85" == Diagonal: 10' 3", Pitch: 46.28
This is made WAY harder by being freedom units. Use metric and it's a piece of cake.
This look like a config file for code, and yes @Monsieur405 metric would be better... and fits even better to the config file look...
I think you forgot to subtract the 5.5" down from the 2x6 for the initial big triangle. The actual rise should be 7' 7 3/4" or 91 3/4"
@@A..n..d..y Hey sorry for the late reply, that is being accounted for in the NewPitch and NewRise.
You take that new diagonal and subtract that from the rise which gives you the final rise.
Re-watched the math. Always love learning how to calculate angles for home projects. Would be awesome to see a video with just math calculations for weird overhangs and what not.
I learned in school, if you did not know how to do the math w/o a calculator you did not know math... I used to know math, lol. Know it is all about apps/calculator. Watching your videos for quite a few years, I thought I was a perfectionist with tolerances and measurements but you take the cake. I stopped being such a perfectionist when I realized one day, with organic structure, expansion and contraction, heating and cooling, continuous drying out of the materials, settlment and natural compaction, nothing will be "perfect". I do not know how much time I wasted trying to be perfect. I however do strive for as good as quality as reasonably possibly w/o breaking the clients bank. I enjoy your videos. Its got to be hard for Greg to work with you unless he is the same, lol. Great idea for a video, show us your mistakes, we all make them. So we can learn from them or how to fix them. You have shown very few, and in this industry I know there is alot, some not even the builders fault. Thanks again.
My 8th grader literally just walked in and asked for help with his math homework finding angles given one angle right as Kyle was drawing his diagram. I said “just watch this” 😂
Regarding the math, a subtle inaccuracy is that you used the angle determined by the diagonal of the brace (from long point to long point) but then applied it to the edge of the brace (from long point to short point). Obviously a small enough deviation that it will still get you quite close to your desired height for the resulting X brace. A more exact answer would require some algebra, more than can be easily typed out here.
Came to say exactly this
me too!
Love the math explanation!! Hard part is remembering when I need it😁
You'd amaze people with the explanation of load upon the trusses for that building & how/why they were designed that way...
I always enjoy how you explain the math or your methods it makes it easier to follow once you understand. You would make a great teacher
At about the 20 min mark you said you are a horrible explainer. You are not, but most people are horrible listeners. Keep up the great work.
For the cross brace that transfers the lateral loads there’s something kind of cool to point out. With trusses you always want triangles, no squares. The reason for this is every point load gets distributed as pure compression or tension on every board of the truss and removes any “bending” loads. It makes the structure incredibly strong.
You didn't lose me!😃 Another way to figure out rise/run if you know one of the legs and one of the angles is to do a little trigonometry with sine or cosine depending on which leg & angle you know. Love watching your content!
Kyle, Math doesn't lie. It isn't that bad, and as you said using the calculators available today make this so simple.
Bracing 100% makes a difference. A few people suggested building a scale mockup and using it with/without bracing. It does matter.
Kyle, from an engineering point of view, and realizing that most cross brace before steel goes on, is needed to resist non plumb structure. We do the same on steel structures even though we are putting on concrete skins or other types of skins. Ultimately is adds to the shear and is needed in extreme cases of wind where sheet metal will fail.
I do this every day so I was right there with you framing is fun and there are so many tricks of the trade i like to sit and figure them out beforehand. It makes the job easier and clean and efficient 💪👍👍
Hola !! Muy generoso de tu parte explicarnos una parte de la construccion tan importante.
Gracias , saludos desde Uruguay🇺🇾💪
You guys did a great job raising this building. I really do not see how it can last but for a warehouse, good enough.
Typically here anyway, the truss manufacturer will identify the required bracing in the installation blue print. Logical is not always what they want. If you are trying to save money, this area will not. This will work well for typical storms and snow loads but an aggressive tornado or hurricane will pull the building apart. Impossible to build a all storm resistant super structure but we do what we can. You covered it well, thanks.
Kyle thanks for covering the math. Got a small job and it will help with that. As always great information! Thanks again!
I like seeing the real world applications of math. I thought you were using a scientific calculator until I you showed a close up. Carpenters are good about breaking math into simple concepts. I'm in school working towards engineering and I wish I could break the concepts down as simply.
I'm at a point where I'm past the total comprehension of what's going on and into the "trust me, it works" territory. So it's nice seeing the simple stuff.
Honestly I’m no mathematician but you explained that so clearly even I understood what you were saying! Great job as always.
Kyle, I appreciate that you took the time to review the math.
As a framer it is 38 % of the strength of the building after being installed very nice job and you take it to the fullest strength.!!.
I watched every second of it. Thank you for your time
I think your math lesson was excellent, Mr. Construction Man. I was a teacher and I believe (as you do, I can tell) that a good lesson is useful and, well done (as you do it) it is also entertaining. I wish I could do the personal 'construction' I did when I was young and still had my land, over again. I would do things more wisely. Thanks for the videos, guys. :)
Great videos, definitely understood the lesson about the math being a metal worker scribing isn't really an option so nice to see it being done 👍
Love the math! Especially when I can understand most of what you’re doing 😂
Agreed. I would probably scribe it like others are saying (especially in a hurry), but I love learning the math and using it to double check my work or do it the “right” way if I have time.
Thank you for your time.
Love the math. The drawing really made it better.
Nice!
The math is awesome and your ability to utilize it is too!
My thoughts are that for the youngsters and teens that watch Kyle, and are interested in the trade, this might be motivation for them to pay attention in math class.
Am I the only one that would just hold up a board, reach behind and mark it with a pencil 😂
If ever there was a case for scribing and cutting on the fly....
That takes all the fun out of it 😉
He loves his math
Preach!
Making it more complicated than it needs to be.
32:20 seems like rather than nailing the 2x4 to the top of the truss, if you nailed it to the side of the truss and formed a "T" then you get the entire strength/length of the 2x4 as resistance rather than just the nails you put into it
Happy birthday and we enjoy all your content here
Regarding the math, as a graphic designer I grab my laptop,launch adobe illustrator, draw the rectangle and the plank to scale and the angles are calculated in a minute. Then use the speed square the mark my cut line. But nice to see how the pros take it on. Also, holy smokes, if I had to use inches I would have a melt down! Grew up with metric.
I love your math explanations. By the way, Hello from Montreal, Canada! You are precise and your details are on the nose. Thanks!
I like the math! Keep up the good work!
The math is great when you're working in plumb and level, thats where it works best.
When your working on old settled buildings ya gotta do the old scribe trick though usually or even use some "cardboard aided drawing" taping up a template on weird shapes to make something that actually fits perfectly imo
I'm with you Kile. I don't know where we're going, but were making good time!
Really massive build guys , Congratulations on you awesome work 👍👍👍
I did not skip a thing.
But at the same time, having eyes on the project would help my understanding.
A short road trip might be in order.
I saved your last video that describes this math. I use it everything I have my post frame buildings now.
Well it’s funny….my oldest boy and I just got done doing geometry together (haven’t done it in 20+ years) took us a min to get it together so to answer your question….yes I stayed with you and knew about half of what you were saying…lol.
Good guys!
Great illustration and explanation of the math. I LOVE IT and yes I was screaming!
Hello and you Guy's are Super Men and I've never seen Two Men take on A Big task as Massive as you Two Guy's Has and Completed the Whole Job start to finishing . That's exactly why I say you Two Men Has Super Power's and you are very intelligent 🤓 thinking 🤔 and Figuring it All Out as each and everything is being Done 👍✅ .
the kicker makes more sense upside down... they are to stiff the roof against wind load from outside... so they need to push into the building. at the moment they are pulling on the nails at the top that are nailed into the end of the board.
Enjoyed the math, but I think it's wrong. 48.85 is the angle between ground line and the imaginary line that connects the longer points of your cross member, not the angle with its sides.
At 10.75 feet away, the error is unnoticiable, around 1.2 degrees. Just to let you know, I payed attention...
Thanks for sharing, love your videos.
I have asked several times why there are no shear walls. Haven't gotten a response. A straight line wind above 60mph will rack this building.
QUALITY SELLS ITSELF
ALL DAY LONG!!!
☮️💜🇺🇸
16:00 I bet just filling the bay cavity with closed cell expanding foam insulation would do more than those cross braces (at a much higher price point though), but I'd love to see some actual experimental data on that. I think structurally the ultimate post frame would be steel skin with walls filled with CCEF insulation.
I got thru it. But it went WAY over my head. I'm gona just hire that if ever needed. (Retired IT guy)
I made it thru because I've been a carpenter my whole life. 😊
My opinion is those walls should be X braced and the trusses should have rat run on 12 ft centers the length of the building and the gable ends should be braced off of said rat run.
Just dropped my cart off there today because of this series!
Regarding the corner bracing. My thoughts are corners are most susceptible to negative windload sucking on that steel. And while not likely, if strong enough that could peal off some of the steel in the corner. And if this happened the bracing is still there to help. It is a bit of a belt and suspenders under normal conditions, but in worst case it's sometimes nice to have the backup if the other were to fail.
😂😂😂😂😂😂😂😂
I don't use all of that math when doing things like this. I will measure the height and divide it in half and then stick a board up and mark the back side against the post. That board after I cut it will be my template. Simple, done and less thinking about it.
Made it through all the math! Extremely interesting
For fun, you should do a kicker one post over from where it should be….complex angles. Your cuts will not only have a calculated angle, but a bevel. A fun challenge. I bet you get it though.
Build a mockup wall with extra stuff and try to knock it over.
Why not put the second diagonal in the adjacent bay so all diagonals are flat against the inside of the girts. Seems like that would avoid blocks and toe-nailing and use all the girt attachments for better shear strength.
I agree with your thought that it's a complete waste of time to brace those corners. You can certainly get away with 2 45's instead of 8. . I would connect those trusses in more spots the long way through the building in the bottom instead of along each truss. They won't all bend together.
Great video as always. In my experience steel strap bracing on the outside would be more efficient to install and be much stronger. I feel like a brace under tension works better than a brace under compression because under tension there's the risk of buckling. The sheeting would do some bracing but because its got ridges its not really working as a diaphragm as it is easy to deform under stress. My two cents worth. Always interesting seeing the different way people tackle a problem.
I wonder if it would make sense to put those webbing stiffeners in before hoisting them up to the top of the posts. Like tip them vertical on the stack with the Magni, maybe drop them to the ground, install the stiffeners, then fly them into place. I think it might be faster than having to do it from the megadeck.
Perfect explanation. Loved it.
love the math. hope you will keep showing the math.
Reminds me of statics in college
This is a good practical problem to solve as a school exercise for kids.
Even if they used a 2*14 on those truss webs it wouldn't add much strength to resist the bending moment in that direction the "L" shape of the geometry on those braces is where the stiffness comes from, just think about how hard it is to bend a 2*4 on end vs how floppy a 2*12 is laying flat. So in that case it's the geometry not the amount of lumber that adds strength so there would be no good way for the truss makers to add that and still be able to stack the trusses on the truck.
I bought an engineered steel building which has very similar construction with posts, trusses, girts and purlins with a steel skin. The each side of the roof and both side walls each had steel rods doing x-bracing in one bay each. I suspect there is a reason the engineer added these.
Good morning Thursday ✌️ 🤟💪💪💪💪😎
Awesome build!
Got a feeling the cross brace theory is similar to those earthquake braces like in Japanese wooden house constructions, it gives it the rigidity even if it cost a bit more...
I imagine the wind load where ya at is also pretty high...
🤔 living dangerously with those 3 1/8 nails 😂.
Great work. Exoskeleton is the word you're looking for.
Call me weird, but the math made sense to me the way you explained it. I enjoyed it.
I would not want to rely on the steel to resist lateral forces perpendicular to the channels rolled into it. It's flexible in that direction, both in tension and compression. Not to mention that the total strength you get from the steel depends entirely on the screws not snapping or wearing their holes oversize and weakening the wood around them.
Knowing and understanding the “WHY” behind your trade discipline is the difference in being a journeyman or an apprentice.
Does the metal manufacture provide a sheer value for the walls completely covered with their product ?
Not a builder, carpenter etc, the corner math made sense. Now as square as your building is you should only have to scribe 1 board then go back to the pile to make the rest of your cuts. Thanks to editing if you made a mistake you could have just re-filmed the process LOL Looking forward to some more RRHQ 2.0 videos
Regarding the Maths lesson! 😢 I actually enjoy that part of your builds and confidence, that the Maths never lies! Maybe I have ADHD lol😂, I would've just held and scribed my own braces! 😂
The bracing called out on truss drawings are for a qty of 1 truss. Design software doesn’t care how many trusses there are. “T” or “L” bracing is for that 1 web, not for the structure. You still need some structural permanent bracing
Definitely had the thought about setting up a board and scribing the angle. Lol I did watch all the math though.
Always great information!
Honestly, it's neat to watch you figure that out, but I would have measured it out, snapped a line, found my angle, then measured it out again. I wouldn't have thought to put up x braces. I would have put it half way up in 1 Bay then from half to top in the next. Might have even used 3 bays to reach bottom to top
Great work 👍💯🇺🇸
The new mic setup is whack, homie.
Cuts out when you're not speaking. Driving me crazy.
Thank you for that.
Sounds like the "noise gate" for the mics were set too aggressively.
Was just about to write the same :/ It was on the last of this series episode also. The gate ratio is set way to high and it feels like I'm loosing the audio for every second word.
No problem following your geometry/trigonometry calculations
Thank for the info
12:30 I just put the frame into a CAD program and do the measurements that way :)
(But I've done it the 'long way' plenty of times)