Abstract: An integral formwork system for the construction of pits (20) for loading ramps (10), comprising a set of appropriately reinforced sheet metal panels, piping and sections, bolted to each other; in particular, the formwork is of disposable type, built with specific construction, lightweight, resistant, and compact in size, in order to permit single operation casting for paving (PCL), from the pit level of the formwork without the need to provide special and expensive connecting structures such as flexible joints. Moreover, the system in question also permits the construction of overhang ledges (23) without special moulds; when work is completed, these overhang ledges (23) are able to bear the weight of the loading ramp (10) and the vehicle positioned on it (17).

Abstract: An improved hydraulic lifting sectional security door, capable of being installed at an entry space to a room, comprising a pair of profiles (PRF) near to each frame (STP) of the entry space, a series of panels (PNL) articulated together and a device or group (GP) for lifting the panels (PNL), which includes a hydraulic cylinder (CI), to which fixed and mobile lifting pulleys (PL1, PL2, PL3, PL4) are fixed; according to the invention the lifting cables (FA1, FA2) start from stops (FE1, FE2), which are preferably next to the cylinder (CI) and their exit in the direction of the return pulleys (PU1, PU2) takes place in a balanced manner, on the two outer sides of the lifting pulleys (PL1, PL2, PL3, PL4), so as to be able to obtain a reversible container (CAS), which allows the hydraulic cylinder (CI) and the exit of the hydraulic tube (TU) to the right or left of the entry space, according to the user's desires and requirements.