Sectional draining floor for stalls and pigsties and the like comprising a first plurality of lower elements made of cement or other material having approximate shape of triangular straight prism with base of isosceles triangle, laid along adjacent parallel rows, a second plurality of gutters made of smooth plastic or other material placed over and between said rows of lower elements, and a third plurality of upper elements made of cement or other material approximately shaped as a parallelepiped having upper surface substantially level and not interrupted by any slot, so that they compose a walking surface, where drain slots open only in the spaces left between the side-edges of said upper elements. The alternate rows of said upper elements are staggered with respect to each other, reminiscent of brickwork and fasten the whole said floor and have shape and size fit to be produced by machinery.