A method of increasing usable space in a parking lot. A support assembly and an access system are erected. A module is placed on the support assembly in one piece or section-by-section. There is an accessible volume of space below the module that is sufficient to allow an automobile to park in a parking space below the module or to allow an automobile to drive in a drive aisle below the module. The module is removably connected to the support assembly. The module may include a frame and a covering coupled to the frame. The support assembly may include portions positioned between adjacent parking spaces of the parking lot. One portion of the support assembly may be positioned on one side of a drive aisle with another portion of the support assembly positioned on the opposite side of the drive aisle.

A method for building modular stair system comprises assembling a plurality of modular stair units, each of the plurality of modular stair units associated with a single story of a construction, each of the plurality of modular stair units further comprising a self-supporting structure supported by a plurality of corner columns. A first modular stair unit is located on a foundation of a structure. The first modular stair unit is secured to the foundation of the structure. A second modular stair unit is stacked on top of the first modular stair unit, wherein a first plurality of corner support columns engage of the first modular stair unit engage a second plurality of corner support columns of the second modular stair unit. The second modular stair unit is leveled using a connection sleeve that slides within the first plurality of corner support columns and the second plurality of corner support columns. The second modular stair unit is connected to the first modular stair unit to maintain the leveled second modular stair unit using the connection sleeve.

A method for retrofitting a building using a lift system and a component kit for performing the method are provided. The shaft of the lift system extends over at least two stories 3 and comprises a self-supporting sheet metal box made of at least one steel plate, which is provided for receiving a cabin of the lift system together with its guides and drive devices. The sheet metal box of the shaft has a profiled cross section, which forms a cross-sectional area in the cross-sectional plane within the sheet metal box, which essentially covers the area required by the cabin and its guides and drive devices, and additionally contains the area of a lift platform for bridging a distance between the cabin and the building. The method provides prefabricating the lift system and installing it to the building.

A method for retrofitting a building using a lift system and a component kit for performing the method are provided. The shaft of the lift system extends over at least two stories 3 and comprises a self-supporting sheet metal box made of at least one steel plate, which is provided for receiving a cabin of the lift system together with its guides and drive devices. The sheet metal box of the shaft has a profiled cross section, which forms a cross-sectional area in the cross-sectional plane within the sheet metal box, which essentially covers the area required by the cabin and its guides and drive devices, and additionally contains the area of a lift platform for bridging a distance between the cabin and the building. The method provides prefabricating the lift system and installing it to the building.

A structure with a support assembly having an upper surface spaced above a lower surface, a module removably supported by the upper surface of the support assembly, and an access system that is configured to allow a person adjacent the lower surface of the support assembly to move vertically upward adjacent the upper surface of the support assembly. The module at least partially encloses an interior space that is accessible through an opening in the module. The module is not permanently joined to the support assembly, and there is an accessible volume of space positioned below the module. The access system is positioned in a corner of a parking lot, the module extends laterally outward from the access system, and the module is positioned above at least one parking space in the parking lot.

A structure with a support assembly having an upper surface spaced above a lower surface, a module removably supported by the upper surface of the support assembly, and an access system that is configured to allow a person adjacent the lower surface of the support assembly to move vertically upward adjacent the upper surface of the support assembly. The module at least partially encloses an interior space that is accessible through an opening in the module. The module is not permanently joined to the support assembly, and there is an accessible volume of space positioned below the module. The access system is positioned in a corner of a parking lot, the module extends laterally outward from the access system, and the module is positioned above at least one parking space in the parking lot.

An aluminum foil annealing furnace includes multiple resistance heaters fixedly mounted over a furnace body. Each resistance heater is connected with a pipeline circulation system. The pipeline circulation system includes a circulating blower fixedly mounted over the furnace body, an air outlet pipeline communicated with a first air outlet of the corresponding resistance heater through an air outlet elbow, and an air return pipeline communicated with a fourth air inlet of the circulating blower through an air return elbow. A first air inlet of the corresponding resistance heater is communicated with a fourth air outlet of the circulating blower. The air outlet pipeline and the air return pipeline are evenly arranged in the furnace body. The air return elbow is provided with a sixth pipe for communicating with outside air. The sixth pipe is provided with a negative pressure relief valve for opening or closing the sixth pipe.

A stair chair for use in transporting a patient in a seated position along stairs comprising a base, an upright coupled to the base, and a track assembly extending from the base for traversing stairs. A seat section is operatively attached to the upright and arranged for movement relative to the base between a plurality of vertical configurations including a first vertical configuration where the seat section is spaced from the base at a first distance for supporting the patient in the seated position, and a second vertical configuration where the seat section is spaced from the base at a second distance greater than the first distance. A lift mechanism is interposed between the base and the seat section to move the seat section between the plurality of vertical configurations. The lift mechanism moves the seat section to facilitate transitioning the patient to a standing position from the seated position.

A stair chair for use in transporting a patient in a seated position along stairs comprising a base, an upright coupled to the base, and a track assembly extending from the base for traversing stairs. A seat section is operatively attached to the upright and arranged for movement relative to the base between a plurality of vertical configurations including a first vertical configuration where the seat section is spaced from the base at a first distance for supporting the patient in the seated position, and a second vertical configuration where the seat section is spaced from the base at a second distance greater than the first distance. A lift mechanism is interposed between the base and the seat section to move the seat section between the plurality of vertical configurations. The lift mechanism moves the seat section to facilitate transitioning the patient to a standing position from the seated position.

A ramp assembly includes a decking system and a handrail system, an interface between the decking system and the handrail system, and a support system pivotably coupled to the interface. Other embodiments include a swivel bracket and a method of assembling a ramp assembly.