According to the Code for Load of Building Structures (GB50009-20 12), the bearing capacity of gym floor should not be less than **4.0(kN/m2)**, that is, the bearing capacity of floor per square meter should reach 4kn and above. In the design, the floor weight of 400KG/M2 and the additional live load of 200KG/M2 need to be multiplied by the coefficients of 1.2 and 1.4 respectively. In actual calculation, the bearing capacity of the floor is 400 x1.2+200 x1.4 = 760. So the load-bearing standard of gym floor is.