Hello, I wrote this question to bilig@ mail before, but I think I am writing it here again because the questions were answered on the forum. Some projects also require quantity information. For this purpose, I downloaded the demo program and In the appendix, I made a work called quantity-trial about the quantity feature and listed the situations that I think are wrong or incomplete below. I made the same drawing next to it for comparison. 1- In the left drawing, I assigned a ceramic coating to the back side of the P01 curtain, according to the construction component design logic. However, when obtaining the quantity information, the interior length is 5.80 m, while it accepts 6.00 m. The floor height is 18.00 m2 for 3.00 mt. 2- In the drawing on the right, I have assigned the edge area of the surrounding objects to the M002 site, but only in the quantity It calculates for the wall. The wall covering of the curtain elements is not calculated. 3- While the rooms are created with wall elements, the space assignment is done without any problems, and curtain elements are not used. It is possible to determine the boundaries with the location line and assign them to the location. Also, as can be seen in the file I added, why the program does not automatically trim the wall according to the slabs and beams. It will be healthier for both drawing and quantity. Some programs have a feature such as dominance, and the one with the higher dominance clips the lower one. Does the program automatically take wall height for wall heights that may be different, especially after the beams are drawn? As a novice for the program, if there is an incorrect operation that I have made or the program, I would appreciate it if you could provide information. I wish you good work. Sertac ERDAĞI