The file has two construction details. the construction system used is pvc. the system is used by pvc sheets that are joined together by a tongue and groove system which to give it greater resistance; rods are placed inside the plates in order to fill with concrete and make the system seismic resistant. the first detail has the exact specification of the connection from the foundation to the slab while the second detail explains in detail the parts of the skylight. this system is a precast system which can be built without the need to be filled with concrete.