Graphic scales

[Rajesh V]

Can any one explain the Graphic scale how to draw? I need concept. In left side yellow highlighted to right side bar diagram.

 

[klaus.]

I have no idea..but must be part of the CAD Software you are using

 

[pmtrevisan1]

top scale is 1/8" per foot. the right side gives indications on lengths if measured with a ruller.

bottom is 3/4" per foot. e right side gives indications on lengths if measured with a ruller.

so for the top scale is you used regular ruler and measured the dwg to 1/2" that would be 4'

bottom scale with the the same 1/2 " measurement would be 8"
these are known as graphic scales
p

 

[Tmoose]

"how to draw"

"draw", like with paper and pencil, or in a CAD program ?

In a typical day I will very likely find my self using programs like MSPaint and Paint.net to modify technical images for e-mails and reports.
I'd copy, paste, and rescale your images to suit my needs as necessary.

 

[Rajesh V]

Thanks for your answer "pmtrevisan1"!!!!!
can you explain this answers"so for the top scale is you used regular ruler and measured the dwg to 1/2" that would be 4'
bottom scale with the the same 1/2 " measurement would be 8".

How you take 1/2" is to be 4' and 1/2" to be 8" from bar diagram. Because some drawings shown only bar diagrams. I need to fix the scale to measure required distance.

 

[DaveAtkins]

Graphic scales are better than putting 1/8" = 1'-0" or 3/4" = 1'-0" on the drawings, because these days, drawings can be plotted any size you want (8-1/2 X 11, 11 X 17, 22 X 34, etc.). A graphic scale will reduce or enlarge with the drawing, so it will always be correct.

To use a graphic scale, you need a physical architectural scale. Put it on the graphic scale to determine what is the correct scale of the drawing.

DaveAtkins

 

[msquared48]

Pmtrevisan1 said... the bottom scale with the same 1/2" measurement would be 8" (inches), not 8' (feet) as you just posted.

Mike McCann, PE, SE (WA)

 

[Rajesh V]

Thanks! "DaveAtkins"
my concern only measuring dimensions in softcopy pdf files using bluebeam and adobereader.

 

[Rajesh V]

Corrected my frnd!!!!"msquared48"

 

[Tmoose]

Adobe reader has had a measuring tool for a while.

Edit > Analysis > Measuring tool

The length of something has to be known to set the scaling.

 

[rb1957]

Before measuring the pdf/other, first verify that the view is full size ... use the measure tool on the scale.

another day in paradise, or is paradise one day closer ?

 

[jayrod12]

Bluebeam allows you to calibrate the measurement tool. So you would calibrate it against the graphic scale, and then use the tool to measure off of the drawing. Not too sure I understand the difficulty.

 

[IRstuff]

"How you take 1/2" is to be 4' and 1/2" to be 8" from bar diagram. Because some drawings shown only bar diagrams. I need to fix the scale to measure required distance."

You don't UNLESS the drawing is printed at the proper scale. Otherwise, you ignore the stuff on the left and scale from the stuff at the right.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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[Once20036]

if you`re in a program like bluebeam or adobe, I think you`ll introduce a lot of error calibrating to a graphic scale. Think about the impact of being 1 pixel off on something that is only 1" long.
I would much rather calibrate to the longest dimension that I can possibly find. One pixel on an overall building dimension is much less significant than 1 pixel on a graphic scale.

 

[Agent666]

Once20036, if its scanned (raster format) 100% agree with you. Accuracy required really depends on the end use for the measurement.

If the PDF is in vector format it should be 100% accurate to measure, bluebeam for example will even snap the cursor to the vector linework making measuring very easy after you calibrate the scale (I can only assume adobe does the same). Bluebeam even offers different vertical and horizontal scaling which is very useful in certain situations (drainage long sections, or doing moment coverage diagrams being two examples with different vert/horiz scales).