33407 Construction of Unique Buildings and Structures Строительство уникальных зданий и сооружений 2304-6295 7 10.4123/CUBS.123.8 Verification of the calculation model of window mullion post-deflections under the combined influence of wind load, temperature, and climatic factors Verification of the calculation model of window mullion post-deflections under the combined influence of wind load, temperature, and climatic factors 0009-0009-2163-8322 Ulanov Aleksandr Vadimovich Okulov Andrej Yurievich 0000-0002-8396-4870 57208300172 ABE-1858-2021 Kotliarskaia (Vasileva) Irina Leonidovna iravassilek@mail.ru 0000-0002-1196-8004 6508103761 O-6995-2019 Vatin Nikolai Ivanovich vatin@mail.ru 0009-0007-5425-6318 Storozhev Sergei Alexeyevich sstorozhev4@mvd.ru Peter the Great St. Petersburg Polytechnic University 01 04 2026 3 123 12308 12308

The object of research is a calculation model for determining the deflection of a window mullion post under the combined influence of wind load, temperature, and climatic factors. Method. The calculation model was verified by comparing the formulas entered into Microsoft Excel with those in the regulatory document. The sensitivity analysis of the model to variations in the combination of PVC profile and reinforcing element was carried out to assess the correctness of the model's operation and its parametric stability. Results. The calculation model developed by VEKA Rus LLC and implemented in Microsoft Excel fully reproduces the algorithms presented in the regulatory document. The formulas for determining deflection due to wind load, temperature effects, and their combined effect were correctly implemented. The calculation model allows one to determine the actual deflection of the window mullion (cell E190) and compare it with the regulatory requirements (cell A191). A sensitivity analysis of deflection based on the selected combination of PVC profile and reinforcing insert showed that deflection varied from 1.868 mm to 15.039 mm. For deflections that do not meet regulatory requirements, cell Y192 reflects the noncompliance with the regulatory limits of L/300 and L/200.

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