Design of a staircase and its manufacture for a residential building from laminated veneer lumber. Design development required solutions in the field of fastening – with a total structure weight of more than 900 kg, the permissible load on the floor should not exceed 30 kg. due to the specifics of the equipped heated floor. 2 turntables. 768 screws. Carpentry work is made from solid ash. Metal coating – nitro varnish. Wood coating – OSMO oil.