Russia has two types of production for wooden I-beams: industrial formwork and frames/floor slabs in the private and agricultural construction.  According to What Wood, kiln-dried softwood lumber is used for the production of wooden I-beams, which is glued with a slab made out of OSB, plywood, particleboard or LVL.  In the industrial formwork, the consuming sector uses rougher and cheaper I-beam. Also, complete sets of formwork are rented to construction companies through dealers. The production lines of this kind are owned by large holding companies who are in the construction industry ...