Level double floor on solidifying fluid filled tubes - has holes cut at levelling marks for filler escape

摘要

Support elements are formed by filling tubular pieces with a fluid, self-levelling, hard-setting substance. The tubes are first joined to the underfloor (1) by a rapidly solidifying substance, in construction of a double floor. When individual tubular pieces (2) have been aligned, externally visible level marks are applied, in a horizontal plane dictated by the finished double floor level. At these points holes (6) are made in the tube sides, and a filling (3) is poured in until the substance emerges from the holes. Tubes can have bottom outward-protruding flanges (2).