scaling up
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Thread: scaling up

  1. #1
    Join Date
    Jun 2009
    Location
    Bristol
    Posts
    4

    Default scaling up

    Hi everyone
    I would like to scale up a plan of a scottish fifie,it was free June model boats,Its 1:20 if i enlarge it by half again what scale would that become...hope someone can help..Denis:

  2. #2
    Join Date
    Jan 2007
    Location
    Aberchirder
    Posts
    50

    Default

    Tried to puzzle this out. If you mean enlarging the plan till ten inches on its scale measures fifteen on the copy, I think that gives you a wierd scale of 13.3 to 1. On the other hand, if you're setting the photocopier to 1.5 times the original area, I think that works out at 16.3 to 1, The unfortunate truth is that I have not a skooby. My head hurts now.

    Maybe the easiest way is to ask your local photocopying business to enlarge it to the scale you want it to be.

    Good luck finding a mathematician.

  3. #3

    Default Re scaling

    Rob is quite correct , in his calcs.
    As the plan is for a 38'-0"" long vessel, at 1-20 , the model should be 1.9 ft long , if you want it half as big again , the length would then be 1.9 x 1.5 = 2.85 ft. if you divide 38'-0" by 2.85' the answer is 13.3333 recurring.
    You need to enlarge your plan by 150%
    As most photocopiers only go up to either 121% or 141% . the calculation has to be done to get your scale to 150% you have to calculate the difference, as an intermediate scale or secondary enlargement.

    For photocopier with 121% maximum enlargement

    The first stage --- Enlarge the plan to 121% as your max enlargement, the 1-20 length of 1.9ft x1.21 = 2.299ft, then divide your required length of 2.85 ft by 2.299ft which equals 1.239 (use 1.24)
    then set the photocopier to 124% and enlarge the plan again.
    this will give you the overall length of 2.299 x 1.24 = 2.85076 ft.

    For photocopier with 141% maximum enlargement

    The first stage --- Enlarge the plan to 141% as your max enlargement,the 1-20 length of 1.9ft x1.41 = 2.679ft, then divide your required length of 2.85 ft by 2.679ft which equals 1.0638 (use 1.07)
    then set the photocopier to 107% and enlarge the plan again.
    this will give you the overall length of 2.679 x 1.07 = 2.8566 ft.

    you could use 106% giving an overall length of 2.839ft. (2.84 ft) which is marginally smaller.
    hope this helps.

  4. #4
    Join Date
    Jun 2009
    Location
    Bristol
    Posts
    4

    Default Thanks

    I think i got it???many Thanks....Denis

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