In the article results of experimental studies of two-hinged wooden arches on punched metal plate fasteners with incline tie bars. The prototype models of wooden arches with the span of 6 m and the rise of 1m were designed. The models had a rectangular cross-section of 180x40 mm and a T-section of 180x40 mm with a plywood plate with the thickness of 6 mm and the width of 500 mm. The main objective of the T-section was to ensure the stability of the arch.
The method of determination of the tensely deformed state of briefly-arcuated reinforced-concrete elements is resulted on the basis of operating norms of planning of reinforced-concrete constructions, which can be utillized for determination of bearing strength of two-hinged arch as at the single loading to destruction so at the action of the repeated loadings.