Hi there,
Punch, as any program, has a learning curve. The best way to learn the program, IMO, is practice + practice + practice =>
Read and follow the manual (this is important), see the videos => try to create elements not related with your project, so you will become familiar with the commands and how to develop the different components. In addition, AS 5000 is a very old program, in my experience, some settings don't work with the current hardware.
You can calculate the partial area by drawing a manual floor excluding the garage => select the floor => properties bar => calculate area.
In Punch, it is very important to link the walls correctly. As a general rule, if you join the walls using the arrow keys, for example, the spaces are not well defined, so the dimensions that you see in the room label and the spacing wall dimensions will be different. However, if you link the walls using the mouse, the walls will be "fused" and all the dimensions will show the same values.
Patricia
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