In version 2025.c, the possibility of using precast concrete joist floor slab systems was implemented in CYPECAD. Now, in version 2025.d, the possibility of using joists with with lattice girders is implemented. A system or assembly is defined by the selection of a joist, a vault and the thickness of the compression layer. The selection of the precast elements is done by using the manufacturer's product catalogues that have been incorporated into the program.
The program designs the most suitable joist from those available for the selected assembly, as well as the reinforcement to be installed on site to comply with the safety requirements established by the standard. To this end, checks are carried out on the ultimate and serviceability limit states, as well as other geometric and quantity checks. To carry out the checks, the real section of the concrete is generated, both precast and poured on site, with its corresponding reinforcement.
The checks can be consulted and listed in detail, and any modification made by the user to the result proposed by the program will have an effect on the checks.
The floor systems are available for the concrete standards Structural Code and Eurocode 2 (including the various national annexes). In addition to the requirements of the concrete standard, the provisions of EN - 15037 have been considered, which complements the specifications for the particular case of precast joists.
