A stair system with freedom of movement between landings associated therewith includes a connection system configured to connect stairs to a landing associated with a construction, wherein the connection system structurally supports the stairs for safe egress over the stairs while concurrently supporting movement between the landing and a second landing associated with the construction by the stairs in at least one dimension, and wherein the movement supports inter-story drift between the landing and the second landing and removes some force translation between the landing and the second landing.

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 recreational vehicle (RV) includes a ramp door configurable as a ramp or as a patio deck. A stair is attachable to a side of the door. A railing extends about the perimeter of the door when in the deck configuration. First and second support cables may be connected between the door and the RV to support the door when in the deck configuration.

A stair system with freedom of movement between landings associated therewith includes a connection system configured to connect stairs to a landing associated with a construction, wherein the connection system structurally supports the stairs for safe egress over the stairs while concurrently supporting movement between the landing and a second landing associated with the construction by the stairs in at least one dimension, and wherein the movement supports inter-story drift between the landing and the second landing and removes some force translation between the landing and the second landing.

A supporting mechanism for a glass fence is provided. The supporting mechanism has a base, a main body, two sets of anti-collision rubber for contacting with the glass fence, an height-adjustment block, an adjustment slider, and an installation slot for insertion of the glass fence in vertical direction. The installation slot is provided on the main body along a vertical direction of the main body, the installation slot divides the main body into two sub-bodies, each sub-body has an inner wall facing the installation slot. The height-adjustment block is provided at a lower end position of the installation slot, an inner space is provided within the height-adjustment block for receiving an LED device generating light. The adjustment slider selectively moves by an adjustment screw such that height of the height-adjustment block is adjustable. As the glass fence is installed within the installation slot and on the height-adjustment block, installation height of the glass fence is adjustable by the adjustment screw.

A mid-rise residential building with a garage section, a lower section disposed above the garage section, and an upper section disposed above the lower section is disclosed. The upper section includes a corridor that traverses the building, but the lower section does not include such a corridor. The garage section includes a plurality of private garages. The lower section includes at least a pair of multistory dwelling units, where each unit has a through unit floor plan and each unit provides direct access to a respective private garage. The upper section also includes a single story dwelling unit that is primarily accessible from the corridor. An elevator serves the corridor of the upper section, but it bypasses the lower section.

A staircase area at which a staircase is installed across a first floor and a second floor is provided in a building. A part of the staircase area is a non-installation space in which a staircase is not installed, and a lifting space through which a transport robot moves up and down between the first floor and the second floor is provided using the non-installation space. The lifting space and a staircase hall having a spandrel wall there between are adjacent to each other the second floor. An opening through which the transport robot moves between the lifting space and the staircase hall is provided in the spandrel wall.

A staircase area at which a staircase is installed across a first floor and a second floor is provided in a building. A part of the staircase area is a non-installation space in which a staircase is not installed, and a lifting space through which a transport robot moves up and down between the first floor and the second floor is provided using the non-installation space. The lifting space and a staircase hall having a spandrel wall there between are adjacent to each other the second floor. An opening through which the transport robot moves between the lifting space and the staircase hall is provided in the spandrel wall.

A curved staircase including a double helix form with no center support column includes a plurality of stair segments, wherein each of the stair segments is formed from a plurality of rods coupled to a plurality of connecting nodes. The plurality of rods are arranged in a skewed tetrahedral geometry, which causes the plurality of stair segments to form a helical structure when the plurality of stair segments are coupled together. The plurality of rods form a spine on an underside of the plurality of stair segments. A tread is coupled to each of the stair segments. In alternate embodiments, the curved staircase may be formed from sheet metal creased to form a plurality of linear support locations and connecting nodes.

A stair system according to one illustrative embodiment comprises: a support body mountable in a wall and comprising a connecting region; a stair body; and a mounting apparatus. The mounting apparatus comprises: a connector connectable to the connecting region of the support body in any one of a plurality of different positions in the connecting region of the support body; and a holder configured to hold the stair body such that when the connector is connected to the connecting region of the support body, the stair body is spaced apart from the support body to permit a wall panel between the stair body and the support body. Wall assemblies comprising such stair systems are also disclosed.