This paper explored the reinforced concrete superimposed floor slabs produced by Germany.

This paper states types and causations of non-structural crack in reinforced concrete slab and points out several important taches to control crack.

On reasons for cracks on reinforced concrete floor and its preventive measures

Aiming at the common quality problem--the fissuring of cast-in-site reinforced concrete floorin the medium or small-sized buildings, the author summarized the causes of the fissuring of cast-in-site reinforced concrete floor and the measures against it on the base of investingation.

Analysis of 45° bevel crack in cast-in-place reinforced concrete floor of the residence;

Analysis and prevention of cracks in cast-in-place reinforced concrete floor;

Through analyzing the common design crack,material crack in the cast-in-place reinforced concrete floor,constructing in the crack,enumerate the regular crack out and control the method and precautionary measures,in order to seek for better methods to reduce or owoid cracks in reinforced concrete slab and to improve the quality of buildings.

The paper introduces causes of cracks in site-pouring reinforced concrete floor and gives out the countermeasures.

On analysis of occurring causes of cast-in-place reinforced concrete floor;