This thesis describes the design of wooden substructures Motor Show. This constructionis located in South Moravia in Brno area. The dimensions are 33 mx 49 m and height from ground to top is 15.5 m The main structure is unbalanced arc of glued laminated timber, constant section height. Length of the arch is 39 meters. For the design of bearings, connections and contacts have been used steel elements. The concrete columns are stored using the arc tangent bearings. Front and side (east) side have a glass facade, glass is the antisun and security properties are opposite sides of the brickPOROTHERM 40th The structure was modeled in the SCIA ENGINEER 2011th The structural analysis was performed manually.