In diameter.

Therefore, here you need to take a thorough selection of a construction company that will build a house. The log can be of different sections, but in construction a log is used with a section of 20-25cm. It depends on what functions the house will perform. If you, for example, plan to use it as a summer house, then a section of 10-20 cm will suit you. In diameter. After the construction is completed, the house should stand for about a year so that it will shrink and only after that you can start finishing work.