DEVICE FOR RECONSTRUCTION OF WOODEN FLOOR Russian patent published in 1995 - IPC

FIELD: civil engineering. SUBSTANCE: device for reconstruction of wooden floor has wooden beams 1 to be kept, and covering being newly erected reinforced concrete U-shaped beams 2 with horizontal shelf of f thickness and vertical walls of h height, with reinforcement 3 placed in them. Thickness f of the shelf of reinforced beams 2 is increasing towards the middle of floor span. Height h of vertical walls is constant. Difference between maximum and minimum shelf thickness f_max-f_min does not exceed 0.03 span length. Reinforcement 3 of beams 2 is equidistant to lower beam face. EFFECT: technological effectiveness. 5 dwg