12/16 roof plane

[geocoy]

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.

[Gene Davis]

If I have you right, a 12/16, or 12 inches rise in 16 inches run, is the same as a 9/12.

[moak]

If I have you right, a 12/16, or 12 inches rise in 16 inches run, is the same as a 9/12.

otherwise just enter 16 in the pitch part of the dialog box.

[dshall]

otherwise just enter 16 in the pitch part of the dialog box.

Kevin, please refrain from making the solution too easy, please look for the workaround.

[David J. Potter]

Kevin, please refrain from making the solution too easy, please look for the workaround.

Chuckle, snort! Good one DS!

DJP

[Gene Davis]

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?

[dshall]

Interesting, I will check it out in the am

[gteacher]

[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.

[Joe Carrick]

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?

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") = 3/4

[Gene Davis]

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.

[Joe Carrick]

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.

[dshall]

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?

I don't get what the mystery is. I can get a 16:12 pitch.

http://chieftutor.com/dscotthall/GEN...12%20PITCH.wmv

[Tommy Blair]

I don't get what the mystery is. I can get a 16:12 pitch.

http://chieftutor.com/dscotthall/GEN...12%20PITCH.wmv

Scott, so far I'm with you. I don't understand.

[moak]

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.

[mkennedy]

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.

I'm confused too - 12/16 is indeed 9/12, so just enter 9 for a fairly steep but not uncommon roof

16/12 is even easier, just enter 16 and there you go, a super steep roof.