This article discusses numerical modeling of a plywood roof panel based on a finite element model. The modeling of the panel skins was performed taking into account the orthotropy of the plywood. When calculating the roof panel's deformability, it is necessary to account for the reduction in structural rigidity during operation by introducing a reduction factor. A computational study of the roof structure's deformability allowed us to establish a coefficient for the utilization of the roof panel's cross-section rigidity.

Keywords: plywood roofing board, glued laminated board element, modulus of elasticity, volumetric density, Poisson's ratio, design span, standard load, four-node finite element, section moment of inertia