Default reference planes

Reference Planes

Each document in Allplan has an imaginary pair of default reference planes. You can set the height of these planes separately for each document: the default lower plane is set to 0.00 m, and the default upper plane is the height of one floor above it, i.e., 2.50 m (this is the default setting). These invisible default reference planes apply to the entire document.

Imagine two horizontal planes in three-dimensional space, parallel to each other and at different elevations. By associating the height of a wall with the planes, Allplan will ‘stretch’ it so that its top and bottom levels are flush with the upper and lower planes, respectively. If you want, you can also enter an offset distance between the wall’s top and bottom and the planes.

The advantage of this method is that all architectural elements whose heights are defined relative to the default reference planes can be lengthened or shortened in a single operation by changing the elevation of the planes.

Tip: You can change the height of the default reference planes as follows:
When you are working with the building structure, it is best to use the floor manager. Otherwise, you can also use List Default Planes (How) in the General: Roofs, Planes, Sections module.

Activate List Default Planes in one of the following ways

• Menu bar: Create Architecture General: Roofs, Planes, Sections

• Palette: Tools Create area in the following module(s):

General: Roofs, Planes, Sections

Landscaping

Urban Planning

• Configuration: Architecture Roofs and Planes flyout

(A) Upper default reference plane
(B) Lower default reference plane

Behavior of default planes when copying or moving elements between documents