converting scale measurements 1:250 to 1:200

[Mrs X]

Originally Posted by Unregistered

I have a map that is 1:100 for an A1 map but it has been sent to me on A4 paper how do i work out the size

If you blow the (A4) map up to A3, the scale will be approx 1:200. (See JohnS's explanation for this in post#30).

hello i am an architecture student and very confused about the scale.iv tried researching and everywhere is only talking about inches!!i want to understand the scale in meters and cm.please help me about the conversions of scale 1:50,1:100,1:25.thank u

[JohnS]

Originally Posted by Unregistered

hello i am an architecture student and very confused about the scale.iv tried researching and everywhere is only talking about inches!!i want to understand the scale in meters and cm.please help me about the conversions of scale 1:50,1:100,1:25.thank u

Scale is exactly the same in inches and in metric. A scale of 1:50 means one unit on the drawing is 50 units on the project (real life). Doesn't matter whether units are inches or centimeters.

If dimensioning is feet and inches, drawing is more likely to use scales with 12 as a factor. 1:240 means 1" on drawing is 240" on project, but that is 20 ft, and it may be described as 1" = 20'. A metric drawing would be more likely to use 1:200 or 1:250. At 1:200, 1 cm on drawing is 200 cm on project, although that may be described as 1 cm = 2 m.

If you see a statement like that, convert to like units to determine scale.

hi
please help me to convert

I need to convert a drawing from 1'=150' to 1'=150'

Scales are not thing
on scale 1/500

how many meters is .1000 and .1200 and .7000

appreciate help
david

[JohnS]

Originally Posted by Unregistered

Scales are not thing
on scale 1/500

how many meters is .1000 and .1200 and .7000

appreciate help
david

What are the units? Are those dimensions on the plan or the project?
Anyway, 1 unit on the plan is 500 units on the project.

Hi these are measurements on a plan of a piece of land

which says they use the scale 1:500 and metric meters

thanks david

I have measured one piece and .1500 = 6meters

thanks

david

[JohnS]

Originally Posted by Unregistered

I have measured one piece and .1500 = 6meters

thanks

david

0.15 WHAT (meters, millimeters, inches, feet???)

If the scale is really 1:500, then 1 mm on the plan is 500 mm (0.5 m) on the project. However, if the drawing has been copied, it may have deliberately been shrunk or expanded to fit certain size paper, or the magnification may have just been off. Unless there is a scale bar on the drawing somewhere which you can measure, I wouldn't rely on the stated scale.

Guessing that the 0.15 is inches, that is 3.81 mm. If it represents 6m, scale is 1:1575 roughly. At 1:500, a 6m feature on the project should be 12 mm on the plan. The scale statement is based on like units, both metric, or both inch. If you mix, you will simply have a mess, and errors are pretty much guarenteed.