Author Topic: Civil scales and associated settings  (Read 5298 times)

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TJAM51

  • Guest
Civil scales and associated settings
« on: February 07, 2005, 01:09:02 PM »
Does anyone have a chart that will give me the zoom scale factors for viewprots along with dimscales and text heights etc for engineering scales such as 1"=50'-0".

Thanks

CADaver

  • Guest
Re: Civil scales and associated settings
« Reply #1 on: February 07, 2005, 05:28:23 PM »
Quote from: TJAM51
Does anyone have a chart that will give me the zoom scale factors for viewprots along with dimscales and text heights etc for engineering scales such as 1"=50'-0".

Thanks


Figger 'em out, it ain't hard.  Jest reduce to the same units.

1" = 50' is the same as
1" = 600", so the factor is
1/600xp

1/4"=1'-0"
1/4"=12"
1" = 48"
1/48xp

3/8" = 1'-0"
3/8" = 12"
3" = 96"
1" = 32"
1/32xp    or  3/96xp

1" = 30'
1" = 360"
1/360xp

~~~~~~~~~

Now for text ht. we use 1/10" high text so it's real easy.  For MS text, take the factor discovered above "times" 0.1

1" = 50' is the same as
1" = 600", so the zoom factor is
1/600xp

600 "times" 0.1 = 60
text ht = 60

~~~~~~~~~~

If you want 1/8" text multiply by 0.125 instead
600 "times" 0.125 = 7.5
text ht = 7.5

Scott

  • Bull Frog
  • Posts: 244
Civil scales and associated settings
« Reply #2 on: February 08, 2005, 10:13:34 AM »
Not to step on toes, but doesn't 600 "times" 0.125 equal 75 not 7.5?

SPDCad

  • Bull Frog
  • Posts: 453
Civil scales and associated settings
« Reply #3 on: February 08, 2005, 02:17:25 PM »
I find most people follow the same scale factors as what CADaver has shown.
So standards scale and viewport scaling would be as followed;

Scale:      Scale in dwg   Viewport   Text size
1”=50’______1”=600units__1/600xp_____600
1/8”=1’-0”___96__________1/96xp______96
3/16”=1’-0”__64__________1/64xp______64
Ό”=1’-0”____48__________1/48xp______48
3/8”=1’-0”___32__________1/32xp______32

Mathmatically you get

Scale of X/Y”=1’0” become Y*12/X or multiply the denominator by 12 and divide it by the numerator.
Example
1”=50’ is  1/50” therefore 50*12/1 = 600units
3/8”=1’-0” is 8*12/3 = 32units   

I did find a neat little trick for scaling imperial drawings, but I found only I am new about it and practiced it.
   My trick was to draw the titleblock at 1”=1’-0” there by eliminating the factor of 12 (twelve.)

Example using above;

Scale:      Scale in dwg   Viewport   Text size
1”=50’_______50__________1/50xp______50      
1/8”=1’-0”____8___________1/8xp_______8
3/16”=1’-0”___5.3 or 16/3___3/16xp______5.3 or 16/3
Ό”=1’-0”_____4___________1/4xp_______4
3/8”=1’-“_____2.67 or 8/3___3/8xp_______2.67 or 8/3

The mathematical equation for my trick is as follows

Scale X/Y is Y/X = Units or divide the denominator by the numerator.

Examples:
1”=50’ become 50/1 = 50units
3/8”=’1-0” becomes 8/3 or 2.666667

The downfalls to my trick is that you have to plot your drawing at 1”=1’-0” and most people don’t understand how easy scaling can be this way. L

The downfalls to my trick is that you have to plot your drawing at 1”=1’-0” and most people don’t understand how easy scaling can be this way.
Thats is if I explained my little trick  clear enough  :?:[/list]
AutoCAD 2010, w/ OpenDCL

visit: http://reachme.at/spd_designs

CADaver

  • Guest
Civil scales and associated settings
« Reply #4 on: February 08, 2005, 05:37:10 PM »
Quote from: Scott
Not to step on toes, but doesn't 600 "times" 0.125 equal 75 not 7.5?
Yup, typing faster than I think, which is pretty easy fer me.

Anonymous

  • Guest
Re: Civil scales and associated settings
« Reply #5 on: February 08, 2005, 05:48:46 PM »
Quote from: TJAM51
Does anyone have a chart that will give me the zoom scale factors for viewprots along with dimscales and text heights etc for engineering scales such as 1"=50'-0".

Thanks



here is a link to a scale factor chart


http://www.theswamp.org/screens/dubb/SCALL%20FACTOR%20CHART.jpg