A method for assembling massive parts that are useful for building wooden chalets or houses including timbers that are built in two by two, three by three, or four by four, connected through dovetailing, and, optionally, by gluing them together, to obtain massive laminated timber blocks. These massive laminated timber blocks can be filled to form panels. This method improves a process for forming massive wood parts, where assembling the timbers in the form of dove-tails allows the production of several depths without any limitation of length, since the additions are achieved according to an arrangement in quincunx.