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@Marlec wrote:
....
- the lengh of the line ( <> )
- a % from a fixe "Z" (formula: 257/<>*100) wich is the actual slop on the roof expressed in %
- and the formula <>*2% wich is the slop needed on the roof, expressed in %
....
I assume that item 3 is a minimum slope required, so what's expressed in % would always be the minimum 2%, and that what is "needed" to achieve that slope is a minimum amount of drop over the measured distance, which would be expressed in drawing units, not in %. If that's correct, try something like this [in simplest terms, and very lightly tested] -- re-word elements, change precisions, extract what you want from it to incorporate into what you may already have. It does it without alternate units or fields, just some calculations to incorporate into a text override on a linear Dimension.
(defun C:DD257 (); = Dimension Drain at 257-unit drop
(command "_.dimlinear")
(while (> (getvar 'cmdactive) 0) (command pause)); draw it
(setq dimdata (entget (entlast)))
(entmod
(subst
(cons 1
(strcat
"<>\\PSlope at drop of 257 = "
(rtos (/ 25700 (cdr (assoc 42 dimdata))) 2 2); edit precision as desired
"%\\PMin. 2% slope = drop of "
(rtos (/ (cdr (assoc 42 dimdata)) 50) 2 2); edit precision as desired
); strcat
); cons
(assoc 1 dimdata); text override
dimdata
); subst
); entmod
); defun
Kent Cooper, AIA 
@Marlec wrote:
it doesnt work...
....
Not enough information.... Does it not load? Load but doesn't recognize the command name? Accept the command but not do anything? Do something different from what you expect? Etc.
Here's what it gives me, using a "plain" decimal-units-based Dimension Style without alternate units or anything:
Kent Cooper, AIA
the top dim is the result...
Under is what i've done with alternate units...
It helps with the designing of the curbs on the perimeter... spotting the highest "2%" and fixe the top point of the roof and design the curbs...
but i also want ammo to justify time cost on why it could take more time because of the conditions in the existing building
@Marlec wrote:
the top dim is the result...
It looks like you just copied my code and pasted it all in as a text content override. That's not the intent. Save the code to a .lsp file, APPLOAD it, and type in DD257 as a command name to use it -- draw a Dimension from within it, and it then adds the second and third lines to the text content part. You should get something like the image in my previous Reply. You can replace the \\P parts with spaces or something, if you want it on one line, and change wording, and so on, as you prefer. The resolution in your image isn't high enough for me to be able to tell what your green dimension(s) say(s), or maybe I could tailor it to be more like that.
Kent Cooper, AIA
@Marlec wrote:
....
How do i make that lisp file, where do i save it how do i upload it?? i'm a noob in that field...
....
There are lots of threads around here that talk about that, tutorials on various sites, YouTube videos, etc., but briefly:
Copy the code out of the code window, and Paste it into a plain-text editor such as Notepad. Save that to a file called something meaningful, with a .lsp filetype ending, in some location you'll be able to find [preferably one that's in the Support File Search Path list in the Files tab in OPTIONS].
In a drawing, type APPLOAD [or just the alias AP], navigate to where you put that file, select and Load it. Then use its command name DD257 [the part following the C: in the beginning (defun C:... line of any AutoLisp command definition]. This one starts by calling up the DIMLINEAR command for you [it's not for application to an existing Dimension, and after you've put one in, adds the other information to it. It could be made to add that other information to existing Dimensions, if you prefer.
If you like it and need it a lot, there are ways such commands can be made to load automatically into every drawing you open, so you don't have to go through that Loading process yourself all the time. Also, it could be made to take you to an appropriate Layer, and/or to set the appropriate Dimension Style, and/or control things like Object Snap modes, and various other enhancements.
Kent Cooper, AIA
![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")
