The invention relates to a method for laying reinforced meshes of cast-in-situ concrete floors. The method is characterized by comprising steps of 1), designing and
welding the reinforced meshes; 2), laying the reinforced meshes of bottom
layers of the floors; 3), laying the reinforced meshes of surface
layers of the floors; 4), arranging plastic cards or
mortar spacers on the reinforced meshes of the bottom
layers and arranging horse-shaped stools on the reinforced meshes of the surface layers at intervals of 600-900 mm. The plastic cards or
mortar spacers are equivalent to the thicknesses of the protective layers. The method has the advantages that reinforcing steel bars of the concrete floors can be constructed by the aid of the method, accordingly, straight stressed reinforcing steel bars in longitudinal and transverse directions can be guaranteed, grids of the reinforcing steel bars have uniform sizes, and the meshes, which are formed by means of
welding, of the reinforcing steel bars are good in integrity, high in stiffness and difficult to deform and are difficult to locally bend, deform and deviate even under the effect of external force in concrete pouring construction procedures; the concrete protective layers, which are formed by means of pouring, of the reinforcing steel bars of the floors have uniform thicknesses, and accordingly the
crack resistance of the floors can be improved; a large quantity of labor can be saved, the production efficiency can be improved, and good economical effects can be realized.