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Calculator Framing

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Unread 09-17-2020, 01:16 AM   #1
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Calculator Framing


So here is where I'll try to compile some of the equations I've used in the past. I look forward to seeing what y'all do out there.
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Calculator framing-irregular_pitch.png   Calculator framing-chief_architect_premier_x12_ir8nhhktvb.png   Calculator framing-chief_architect_premier_x12_fvqfhuiodb.png  
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Unread 09-17-2020, 11:32 PM   #2
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Re: Calculator Framing


This will take a while to create decent graphics.

Here is a set of transparent (alpha channel) png files of a speed square. I'll use these for when I need to show rafter angles or other things. They should download as transparent pngs hopefully.


The cut out areas should show through whatever is on the background.
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Calculator framing-speed_square_01.png   Calculator framing-speed_square_02.png  

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Unread Yesterday, 10:30 PM   #3
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Re: Calculator Framing


Generic Roof Terms
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Unread Yesterday, 10:38 PM   #4
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Re: Calculator Framing


First here are some tables I used to have in the truck in case the calculator died, or something was needed on-site.
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File Type: pdf Framing Data Sheet.pdf (32.5 KB, 7 views)
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Unread Yesterday, 11:31 PM   #5
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Re: Calculator Framing


More diagrams for reference terminology
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Calculator framing-2019-07-19-15_10_40-autodesk-autocad-lt-2020-roof-diagrams.dwg-.png  
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Unread Yesterday, 11:36 PM   #6
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Re: Calculator Framing


Here's where we're going.....I have a favorite builder who knows stick-framed roofs. This saves him time on-site.

I'll try to get an organized process together showing how I do this. Maybe it helps someone....maybe not.
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Unread Yesterday, 11:37 PM   #7
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Re: Calculator Framing


You never used the little blue roof framing book? Swanson speed squares use to come with a mini version.
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Unread Today, 01:08 AM   #8
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Re: Calculator Framing


Quote:
Originally Posted by deckman22 View Post
You never used the little blue roof framing book? Swanson speed squares use to come with a mini version.
That's a nice book to get someone started with the stacking& speed square terms. I'm sure I have looked it over but I have never used it. I have used both rafter books, also CM 111 to the CM pro. That software stuff is beyond me tho.
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Unread Today, 02:26 AM   #9
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Re: Calculator Framing


Quote:
Originally Posted by deckman22 View Post
You never used the little blue roof framing book? Swanson speed squares use to come with a mini version.
No.
I always wanted to learn how those tables were created. What equations? How’d they determine those lengths? That sort of thing. I’ve always needed to understand the “how”. I bet I could have been faster and wealthier if I was less distracted, but that’s not how it goes.

Back around 2005 I realized that everything in a framed structure can be calculated. Then I married that to AutoCAD and I was creating cut sheets that saved a day or more.

There’s nothing worse (for me) to spend jobsite time doing something when I could do the calculations the night prior and then hit the ground cutting.

So two great apps that are helpful:
Raftertools +: https://apps.apple.com/us/app/rafter-tools/id689788839

BuildCalc: https://apps.apple.com/us/app/buildcalc/id333369423

Raftertools is from Sim Ayers, a true master, in the realm of Joe Bartok.
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Unread Today, 07:44 AM   #10
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Re: Calculator Framing


A good framing sq. has rafter tables on them, really all you need. If they get worn off you can get your lengths by measuring with a tape. Example, 5/12 common rafter, measure across from the 5 to the 12 and it will be 13 1/8" then multiply as needed for the run.

I had to do it the old school way cause we didn't have those calculators then. I can certainly see the advantages of having them & how to use them.
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Unread Today, 12:32 PM   #11
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Re: Calculator Framing


I'm working out a format in PPTX to keep things uniform.

The BuildCalc screen shots should also work with Construction Master up to a point where BuildCalc surpasses CM.


I'm using Fair Use law to copy the BuildCalc screenshots....nothing I submit here will ever be for sale or monetized. Sometimes it's not about $$$.

I like hearing about the old ways. I hope to merge the best of all ways into what we all might someday agree is a set of best practices - the Best Way, to be a technically precise craftsman.
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Unread Today, 04:38 PM   #12
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Re: Calculator Framing


Quote:
Originally Posted by deckman22 View Post
A good framing sq. has rafter tables on them, really all you need. If they get worn off you can get your lengths by measuring with a tape. Example, 5/12 common rafter, measure across from the 5 to the 12 and it will be 13 1/8" then multiply as needed for the run.

I had to do it the old school way cause we didn't have those calculators then. I can certainly see the advantages of having them & how to use them.
5x5=25
12x12=144
sum of these is 169
sq root of 169 is 13 not 13 1/8

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