Abstract: The present disclosure relates to stair systems and methods for allowing stair movement between building levels while maintaining the structural integrity of the stair system for safe egress passage. The systems and methods of the present disclosure allow for independent movement of the surrounding building walls, landings, floor slabs, and/or any other portion of the surrounding building structure or stair system. The embodiments of the present disclosure are suitable for use in both new constructions as well as in existing constructions for retrofit applications to allow for movement between levels, landings, or within stairwell structures. The present disclosure reduces stair damage during building movement whether it is from wind, thermal, or seismic activity, and/or any other type of suitable force or experience, as the present disclosure allows for directional movement, or a combination thereof, including tension and compression, lateral, or vertical movement.

Abstract: The present disclosure relates to stair systems and methods for allowing stair movement between building levels while maintaining the structural integrity of the stair system for safe egress passage. The systems and methods of the present disclosure allow for independent movement of the surrounding building walls, landings, floor slabs, and/or any other portion of the surrounding building structure or stair system. The embodiments of the present disclosure are suitable for use in both new constructions as well as in existing constructions for retrofit applications to allow for movement between levels, landings, or within stairwell structures. The present disclosure reduces stair damage during building movement whether it is from wind, thermal, or seismic activity, and/or any other type of suitable force or experience, as the present disclosure allows for directional movement, or a combination thereof, including tension and compression, lateral, or vertical movement.

Abstract: The present disclosure relates to stair systems and methods for allowing stair movement between building levels while maintaining the structural integrity of the stair system for safe egress passage. The systems and methods of the present disclosure allow for independent movement of the surrounding building walls, landings, floor slabs, and/or any other portion of the surrounding building structure or stair system. The embodiments of the present disclosure are suitable for use in both new constructions as well as in existing constructions for retrofit applications to allow for movement between levels, landings, or within stairwell structures. The present disclosure reduces stair damage during building movement whether it is from wind, thermal, or seismic activity, and/or any other type of suitable force or experience, as the present disclosure allows for directional movement, or a combination thereof, including tension and compression, lateral, or vertical movement.

Abstract: The present disclosure relates to stair systems and methods for allowing stair movement between building levels while maintaining the structural integrity of the stair system for safe egress passage. The systems and methods of the present disclosure allow for independent movement of the surrounding building walls, landings, floor slabs, and/or any other portion of the surrounding building structure or stair system. The embodiments of the present disclosure are suitable for use in both new constructions as well as in existing constructions for retrofit applications to allow for movement between levels, landings, or within stairwell structures. The present disclosure reduces stair damage during building movement whether it is from wind, thermal, or seismic activity, and/or any other type of suitable force or experience, as the present disclosure allows for directional movement, or a combination thereof, including tension and compression, lateral, or vertical movement.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A modular joint barrier retainer assembly, including: a barrier including one or more material layers; a retainer strip coupled to the barrier; and an anchor flange selectively coupled to the retainer strip at a first end of the anchor flange, wherein a second end of the anchor flange is configured to be selectively coupled to one or more of an expansion joint cover and a building substrate. The barrier is selectively disposed within an expansion joint or other gap of a building. The retainer strip is coupled to the barrier via one or more mechanical fasteners that are disposed through the one or more material layers and secured to the retainer strip. The anchor flange includes a hook portion that selectively engages a lip portion of the retainer strip. The anchor flange is selectively secured to the retainer strip via one or more mechanical fasteners.

Abstract: 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.

Abstract: 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.

Abstract: A modular joint barrier retainer assembly, including: a barrier including one or more material layers; a retainer strip coupled to the barrier; and an anchor flange selectively coupled to the retainer strip at a first end of the anchor flange, wherein a second end of the anchor flange is configured to be selectively coupled to one or more of an expansion joint cover and a building substrate. The barrier is selectively disposed within an expansion joint or other gap of a building. The retainer strip is coupled to the barrier via one or more mechanical fasteners that are disposed through the one or more material layers and secured to the retainer strip. The anchor flange includes a hook portion that selectively engages a lip portion of the retainer strip. The anchor flange is selectively secured to the retainer strip via one or more mechanical fasteners.

Abstract: A seismic expansion joint cover includes a bridge panel having one end supported for movement in the y-axis direction and against movement in the x-axis direction relative to a floor A on one side of a motion-absorbing gap and supported at the other end for movement in the x-axis direction and against movement in the y-axis direction relative to a floor B. A recess in floor B receives a portion of the bridge panel in all positions of the bridge panel relative to floor B. A recess cover plate covers the recess, is supported at one end in sliding relation on the bridge panel in all positions of the bridge panel relative to floor B and is joined at the other end to an end member of the recess frame remote from the gap. A resiliently collapsible/extensible honeycomb panel received in the recess in floor B supports the portion of the recess cover plate that spans the recess between the end of the bridge panel and the end member of the recess frame.

Abstract: A seismic expansion joint cover includes a bridge panel having one end supported for movement in the y-axis direction and against movement in the x-axis direction relative to a floor A on one side of a motion-absorbing gap and supported at the other end for movement in the x-axis direction and against movement in the y-axis direction relative to a floor B. A recess in floor B receives a portion of the bridge panel in all positions of the bridge panel relative to floor B. A recess cover plate covers the recess, is supported at one end in sliding relation on the bridge panel in all positions of the bridge panel relative to floor B and is joined at the other end to an end member of the recess frame remote from the gap. A resiliently collapsible/extensible honeycomb panel received in the recess in floor B supports the portion of the recess cover plate that spans the recess between the end of the bridge panel and the end member of the recess frame.

Abstract: A seismic expansion joint cover assembly installed at a motion-absorbing gap between a member A on one side of the gap and a member B on the other side of the gap includes a cover panel spanning the gap and a hinge joining one edge A of the cover panel to the member A for pivotal movement about a pivot axis. The pivot axis is spaced apart from the expansion gap so as to enable a stop between member A and the cover panel to prevent the cover panel from pivoting about the pivot axis into the expansion gap upon widening of the expansion gap. A permanent magnet and magnet striker releasably secure the other edge B of the cover panel to the member B. A tensioned cable connected between the cover panel and one of the members A and B limits the pivoting movements of the cover panel and automatically recloses the cover panel over the gap.

Abstract: A fire resistant barrier and system for dynamic building expansion joints comprising a plurality of layers of fire resistant material comprising: a first mechanical support layer having a first and second major surface; a second layer having a first and second major surface, wherein the second layer provides protection and mechanical support to the fire barrier; and at least one layer of intumescent sheet material having a first and second major surface; said at least one layer of intumescent material is disposed between said first mechanical support layer and said second layer; and wherein said first mechanical support layer, said second layer and said at least one layer of intumescent material are locally bonded together over only a portion of their width substantially continuously along the length of the layers of said fire resistant material.

Abstract: An expansion joint cover installation includes first and second building members defining an expansion gap between them and a cover member spanning and covering the gap and engaging the building members. The cover member is held centered in the gap by a resilient centering system that is coupled between the building members and the cover member and includes a plurality of first tensioned flexible segments connected obliquely between the first building member and the cover member and a plurality of second tensioned flexible segments connected obliquely between the second building member and the cover member. By arranging the tensioned segments obliquely to the axis of the gap, they are relatively long and are able to provide an adequate centering force over a relatively large range of motion between open and closed states of the gap.

Abstract: An expansion joint cover for concealing an expansion gap between building members comprises retainers attached to building members on each side of the expansion gap and a cover panel spanning the expansion gap and overlying at least portions of the first and second retainers and a portion of the building member on at least one side of the gap. The cover panel is attached to the retainers by axially releasable fasteners, such as hook and loop fasteners.

Abstract: A seismic expansion joint cover includes a floor bridge panel having mutually perpendicular elongated U-shaped bearing receiver guideways adjacent its opposite ends slidably supported by linear bearings affixed to the floor portions on opposite sides of the gap. The receiver guideways are open vertically to allow the floor bridge cover to displace vertically. A cover plate frame defines the boundaries of a floor recess that receives portions of the floor bridge panel in all relative positions of the floor portions as the width of the gap changes. The portion of the floor bridge panel that overlies the gap is covered by a first floor cover plate, and the recess and the remaining portion of the floor bridge plate are covered by a second floor cover plate, which is supported by the cover plate frame and by the portion of the floor bridge panel that it overlies. The second cover plate is resiliently attached to the cover plate frame so that it can lift up and ride over the first cover plate when the gap narrows.

Abstract: A seismic expansion joint cover for concealing an expansion gap between building members comprises retainers attached to building members on each side of the expansion gap and a cover spanning the expansion gap and overlying at least portions of the first and second retainers and a portion of the building member on at least one side of the gap. The cover is attached to the retainers by releasable fasteners, such as hook and loop fasteners, that enable it to detach completely from the retainers in an earthquake and to be subsequently reattached. One element of each of the fasteners on one side of the gap is attached to a slider that slides along a track affixed to the internal side of the cover to enable normal thermal expansions and contractions of the gap. Tethers keep the cover from falling to the floor and becoming an obstacle to persons moving through the building.