topic Re: True North or Magnetic North in Modeling

True North or Magnetic North

Anonymous — Wed, 17 Oct 2018 06:10:07 GMT

Hi All,

Should project north be set to true north or magnetic north...I'm assuming it would be true north in order to calculate correct sun angles. Thanks in advanced

Cheers

Re: True North or Magnetic North

Podolsky — Tue, 25 May 2021 20:25:11 GMT

It's preferable to set your building orthogonally on the plan. And set North rotation. While calculating sun angle ArchiCAD will use information about north rotation.

True north gives some troubles - as you need to keep your view always rotated. It might lead to not precise angles between walls (i.e. 98.25 degrees or something like that) because of inaccuracy of drafter, problem using cutting planes, saving library parts from plan, placing details and copy lines for new symbol fills.

Re: True North or Magnetic North

Gerald Hoffman — Wed, 26 May 2021 00:13:14 GMT

Hi Podolsky, I don't think he was asking about rotating the plan itself but the setting of the north angle. In Archicad North refers to True North.

Cheers,