Structural layout that takes full advantage of the capabilities and opportunities afforded by two-way RC floors, coupled with the selection of the best technique, to avoid serviceability failures

摘要

A recently cast two-way rectangular reinforced concrete floor with a span-to-thickness ratio equal to 34.1, which constituted the two stories above ground of an office building under construction, exhibited a totally unsatisfactory deflection performance. The static loading test performed at the end of the construction work demonstrated that the stiffness of the floor was too low. Furthermore, not only the floor that had been loaded for the test, but also the other floor, exhibited excessive increases in deflections with time.