Tantarado Posted July 4, 2011 Share Posted July 4, 2011 Guys, A very good day to All and greetings! I would just like to know how do you compute for scale factor with regards to the plotting output of a drawing file. I have a drawing which is at scale 1:100mts on an A1 (841mm x 594) size paper, now i need to submit the same drawings on an A3 (420mm x 297mm) size paper and the plotting output should also be scalable. What would the new scale be that i need to replect on the drawings, so that the person that will be reading the drawings will know the actual scale of the details in the A3 size paper?. Thanks in Advance (TIA)! aRCad Quote Link to comment Share on other sites More sharing options...
SunnyTurtle Posted July 4, 2011 Share Posted July 4, 2011 (edited) A1 is 4 time the size of A3. Therfore if you have 1:100 scale on A3 drawing. 1:25 scale on the A1 (i think) i recently had to blow an A3 drawing up to A1 size but all of the anitation was wrong and this is was not very prosentable except to markup. (i did this by creating a PDF and scaling it in the PDF printing settings. On all of our drawing we have a ruler on the side indicating the scale so that you can see if it the correct scale before you scale off it. i would sujest doing this to your drawings becasue it tell the reader if the drawing has being printed to the right scale. Next to this scale we have a note saying Originaly printed in A3 size. (or what eversize it was printed in.) The only way i can think of to convert an A3 Drawing to an A1 is the copy it into an new A1 Template and set up a new scale and Viewports (very time comsuming but would love to known how other people do it.) This also means that you have to change all the anotations. Sorry for not answering your question directly but i don't really know a good way to do it. Not Completely correct. in my testing A3*2 will pretty much equal an A1 but it depends on the paper sligthly to get over this we have a boundary around both A3 and A1 this can then be scaled up or down so that we get an even scale upsize If you get your A3 drawing and scale it by 2 and then times the scales by two. This will fit on A1 pretty well. Some of this info may be incorrect as i am unsure. Edited July 5, 2011 by SunnyTurtle wrong Quote Link to comment Share on other sites More sharing options...
eldon Posted July 4, 2011 Share Posted July 4, 2011 I would say that you need an A3 at 1 to 200 scale, but notice that the A3 does not quite cover the same area as the A1 at 1 to 100. You could of course scale it to fit an A3 exactly but they do not seem to make scale rules with a scale of 1 to 210.8 Quote Link to comment Share on other sites More sharing options...
BIGAL Posted July 5, 2011 Share Posted July 5, 2011 (edited) All our plots are set up as an A1 title block in a layout at 1:1 scale, object scaling is done via viewports at A1 scale again say 1:100 1:250 etc Easy bit now PLOT just change the "plot scale" for A1 leave both at 1 & 1 for A3 change 2nd line to 2 this is exactly a half scale plot of what ever you have. A viewport 1:100 is now 1:200 PS Sunnyturtle the ISO sheets are not actually folded in 1/2 they are always folded on the longer edge 841 420 594 297 this is a factor of root2 1.41 but to confuse more 4 A3 in area = 1 A1 but a plot at 1/2 scale = 1/4 area ??? We never change the sheet size just work out one edge border size and will work for A1 & A3 every time. A Couple of things also we use a A1 & A3 ctb the latter is thinner for laser printing v's the inkjet thicker. Minimun text size below 1.8mm can not be read we use 2.5 generally when plotted on A3 is now 1.25mm Edited July 5, 2011 by BIGAL Quote Link to comment Share on other sites More sharing options...
Tantarado Posted July 6, 2011 Author Share Posted July 6, 2011 Thank you guys for the ideas and insights, but still i having problems in this plotting issue. The A3 size plan shall our reference on site in the absence of an A1 size plan, it is more convinient to bring an A3 size plan in explaining to our client site conditions at project site. There are times if a details in the drawings has a missing dimension, our client has a small scale with him/her and starts to scale the A3 size plan and that is the main reason why i wanted to have to know what scale is best appropriate to An A3 size plan. Quote Link to comment Share on other sites More sharing options...
BIGAL Posted July 7, 2011 Share Posted July 7, 2011 The bigger the scale the better if you must scale of paper so make your A1 views twice the scale you really need so when plotted at A3 1/2 scale they are still big. As I said before a A1 1:100 plotted at A3 is now 1:200 exactly. It may look good at A3 and rarely now we plot a plan at A1 and some details because of the exagerated scale stand out like the bull dogs preverbials at full sheet size. As for what is the best scale this depends on the amount of detail you need to convey, have more views for complex areas at a larger scale. Ps the golden rule is never scale of plans ! Quote Link to comment Share on other sites More sharing options...
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