This paper deals with the results received by carried out tensile tests of the structural glass plates supplied with three different types of stress raisors. The first type of specimens is the plate with a circular hole located in the centre of the plate, the second one is the plate with a slot hole located in the centre of the plate, and the third one is the plate with the semicircular notches located at the opposite edges. The results of test of these specimens were compared both among themselves and both with the results of the specimens without stress raisors. The specimens were made from tempered glass of 6 mm thick with the arrising edges. All tests were carried out under equal conditions; the load level has been raised within each 1.0 kN. The experiment was performed with an optical device for measurement of the stresses by birefringence. Detailed analysis of the obtained results is given in this paper.