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Thread: 12/16 roof plane
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12-19-2012, 12:24 PM #1Registered User Promoted
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12/16 roof plane
How do we set up a 12/16 roof plane in CA. Up to now everything was 6/12 or 9/12, but I have no provisions for making a 12 /16. And yes I know it is a steep roof.
geocoy
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12-19-2012, 12:32 PM #2
If I have you right, a 12/16, or 12 inches rise in 16 inches run, is the same as a 9/12.
Gene Davis
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12-19-2012, 12:42 PM #3Kevin Moquin, AIA, LEED AP BD+C
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12-19-2012, 01:14 PM #4D. Scott Hall (The Bridge Troll)
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12-19-2012, 01:18 PM #5Kevin, please refrain from making the solution too easy, please look for the workaround.
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12-19-2012, 01:38 PM #6
Well I'll be darned. I draw a roof plane, open it for spec, and type into the box that says, "Pitch (in 12)", "12 in 16," and Chief returns, "12." The roof plane pitches to 12:12, or 45 degrees. I then respecify, I type, "12:16," and Chief returns, "28"" Things get steep.
I enter "12/16" and Chief returns "3/4"" Real shallow.
What setting am I missing?Gene Davis
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12-19-2012, 01:46 PM #7
Interesting, I will check it out in the am
D. Scott Hall (The Bridge Troll)
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The videos we watch are not 100% gold, but if we find a gold nugget, the time spent viewing has a value.
We can please some of the people some of the time, but we can't please all the people all of the time..... but I will keep trying.
If you are interested in keeping abreast of any new videos, please subscribe to my channel at YOUTUBE...... channel is ds hall
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12-19-2012, 02:09 PM #8
[QUOTE=
What setting am I missing?[/QUOTE]
Your not missing anything? When doing roof pitches as a ratio, Chief Will ONLY accept a ration of 12 -- fixed. Apparently if you type in a math ratio it will try to do the math but then it then becomes a ratio over 12. Perhaps a bug as this field should not be doing math operations.
Both 12/16 and 9/12 are 36.87 deg. 16/12 is not the same as 12/16.
To avoid confusion you can set roof pitch in degs by checking deg in Defaults -- plan.Gerry
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12-19-2012, 02:17 PM #9
You don't understand because you are not a programmer. Here is the programming method:
value of "12 in 16" is 12.00 (everything after the 12 is ignored)
value of "12:16" is 12+16 = 28.00 (something in the program changed the : to a +
value of 12/16 is 3/4
These things are only understood based on the programming language. Basically all of your examples are handled as a text string and in order to determine a numerical value of the text a subroutine is called. It's the subroutine that looks at each character and constructs a numerical value. Programatically that would look like:
nValue := val("12 in 16") = 12
nValue := val("12")+val("16") = 28 // note: programmer replaced the : with a +
nValue := val("12")/val("16") = 3/4Last edited by Joe Carrick; 12-19-2012 at 02:20 PM.
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12-19-2012, 02:17 PM #10
This brings up a feature I really like in Sketchup that ought to be in Chief. Let's call it, "do the math, smarty-pants."
I draw a line in SU, and in the dialog box I see the length as it stretches along as I move the cursor. I stop, and enter, "12/16," and SU makes the line 0.75 units long. I rotate something, and stop, keying in "12:16," and it rotates 36.87 degrees in whatever direction I began the rotation. I move something and type in "99.653/101.333," and it does the math for me.
In other words, I show the intent, I key in my string, and SU makes the move, or the rotation, or the scaling, or whatever transformation I am wanting.Gene Davis
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12-19-2012, 02:25 PM #11
Gene,
Chief isn't asking you for the slope. That input field is asking you for the vertical component of the slope corresponding to a 12" horizontal component. It's actually doing the math correctly. Now if there was another input box in the dbx that let you specify the slope then it would have to analyze it based on a different set of rules.Joseph P. Carrick, Architect - AIA
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12-20-2012, 06:17 AM #12
I don't get what the mystery is. I can get a 16:12 pitch.
http://chieftutor.com/dscotthall/GEN...12%20PITCH.wmvD. Scott Hall (The Bridge Troll)
San Diego, Ca.
Chief X-5 w/ Win 7
Asus P6T X58 ATX Core i7
Intel Core i7 920
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The videos we watch are not 100% gold, but if we find a gold nugget, the time spent viewing has a value.
We can please some of the people some of the time, but we can't please all the people all of the time..... but I will keep trying.
If you are interested in keeping abreast of any new videos, please subscribe to my channel at YOUTUBE...... channel is ds hall
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12-20-2012, 06:36 AM #13Tommy Blair
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12-20-2012, 07:09 AM #14
Just enter 16, the dialog box already assumes the 12.
When you edit roof planes already in place there's an option to enter the pitch in degrees, if that suits you better.Kevin Moquin, AIA, LEED AP BD+C
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12-20-2012, 07:58 AM #15Registered User Promoted
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