The paper points out to the differences of the First order theory and Second order theory and of the significance in practical calculations. The paper presents theoretical foundations and expressions of calculations of impacts on the stability of structure. that is. review of the Second order theory in a bridge with members semi-rigid connections in joints. https://www.getpureroutine.com/top-deal-chromasilk-7-35-7gm-golden-mahogany-blonde-online-sale-best-super/