This volume is the latest of all 10 volumes. Work on it began only in 1931. The prologue in it is not entirely related to the main content. It is based on the book of B. Nikolaev "Physical principles of architectural forms." We believe that if the publication continued, this work could become the basis of an independent volume. Work in the archive of N.A. Morozov, when it is available, may allow you to find any indications of the preparation of such a volume.