== Two Primary Principles ==
1. Creating a shelter ("asiat ohel")
2. Assembling pieces to create a form or structure ("me'dabek chalakim") Performing either of these actions constitutes a Torah-prohibition, as both of these actions were done in the construction of the Mishkan when the planks of the Mishkan were assembled. An action that involves both of these principles is the av melacha of Boneh.
==Building shelters and tents==