topic Re: Dimensions do not add up. Example a string of dimensions do not add up to the total. in Documentation

Dimensions do not add up. Example a string of dimensions do not add up to the total.

martica — Mon, 30 Dec 2024 16:34:49 GMT

I have no idea why these numbers dont add up to the total of 27'; they add up to 26'-11 1/2". I did not think archicad could mis calculate? In Project Preferences, my working units are set at "feet and fractional inches", my dimensions are set at 1/2". Please assist.

Re: Dimensions do not add up. Example a string of dimensions do not add up to the total.

pbg — Tue, 16 Jul 2024 16:20:57 GMT

My guess is that your tolerances (1/2" rounding) are too high - have you tried 1/16" (or even a 1/32") setting? Some of your strings might be rounding up, while others rounding down due to the 1/2" tolerance... Just a guess, but that's usually where I find my strings which don't add correctly.

Re: Dimensions do not add up. Example a string of dimensions do not add up to the total.

Eduardo Rolon — Tue, 16 Jul 2024 19:34:14 GMT

You should always work with the maximum available precision to avoid these errors.

With a precision of 1/2" you get:

1/8+1/8 = 0 rounded (1/4 actual)
1/8+1/4 = 1/2 rounded (3/8 actual)

This results in conditions were you will have strings that don't add up because part of the string rounds down but when you add another then it changes.

Example:

With max precision you have:
With precision set to 1/2" you get

Re: Dimensions do not add up. Example a string of dimensions do not add up to the total.

Barry Kelly — Wed, 17 Jul 2024 02:18:19 GMT

TIP: Create and store a dimension style with maximum precision.

You can apply this dimension style temporarily just to check your dimensions.

You views will be saved with the dimension style that you actually want to use, so they will not be affected in your final output.

Barry.