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 attachment device for attachment to a pathway comprising a body having: a top surface for receiving foot traffic thereon; at least one point of flexure; and at least one arm extending from the point of flexure with the arm moveable about the point of flexure, the at least one arm configured to engage the pathway or a structural member of the pathway, wherein when engaged, the at least one arm secures the device to the pathway, wherein engagement of the at least one arm results in the device being compressively secured to the pathway in between two component members of the pathway.

An elevator trench drain including a trench at least partially defining a drain volume, where the trench includes a base wall and at least one side wall extending from the base wall, a conduit coupled to the trench and open to the drain volume, and a grate coupled to the trench. The grate includes a top surface defining a periphery, at least one wall extending from a periphery of the top surface and configured to contact the base wall of the trench, and a support configured to selectively contact the base wall at a location inside the periphery of the top surface.

An elevator trench drain including a trench at least partially defining a drain volume, where the trench includes a base wall and at least one side wall extending from the base wall, a conduit coupled to the trench and open to the drain volume, and a grate coupled to the trench. The grate includes a top surface defining a periphery, at least one wall extending from a periphery of the top surface and configured to contact the base wall of the trench, and a support configured to selectively contact the base wall at a location inside the periphery of the top surface.

An elevator trench drain including a trench at least partially defining a drain volume, where the trench includes a base wall and at least one side wall extending from the base wall, a conduit coupled to the trench and open to the drain volume, and a grate coupled to the trench. The grate includes a top surface defining a periphery, at least one wall extending from a periphery of the top surface and configured to contact the base wall of the trench, and a support configured to selectively contact the base wall at a location inside the periphery of the top surface.

A system for interfacing a floor vent to floating flooring. The flooring is for covering a floor and the floor vent is for covering a hole through the floor. The system includes an underlayment for placement on the floor, the underlayment having a first compressibility; a floor vent for placement over the hole through the floor; a flooring material for placement on the underlayment, the flooring material having a second compressibility that is substantially less than the first compressibility; and an interface structure for placement on the floor, adjacent to the underlayment, beneath portions of the floor vent, and beneath portions of the flooring material adjacent to the floor vent, the interface structure having a third compressibility that is substantially less than the first compressibility.

The invention concerns a method for installing a hatch (34) to a subsea structure (10) by connecting the hatch to the subsea structure by at least one hinge (20) having a first mounting portion (21), a second mounting portion (22), a flexible portion (23) interconnecting the first and second mounting portion allowing a pivot connection between the first and second mounting portion. The installation steps comprise •—inserting a protrusion (23) of the first mounting portion (21) into an installation hole arranged in the subsea structure (10), •—inserting a protrusion (24) of the second mounting portion (22) into an installation hole arranged in the hatch (34), thereby •—engaging the first mounting portion (21) of the hinge (20) for anchorage with the subsea structure (10) and engaging the second mounting portion (22) for anchorage with the hatch (34) thereby arranging for the hatch to pivot between a closed and an open position about a pivot axis provided by the flexible portion of the hinge. The invention also concerns a hinge and an assembly for subsea use.

The invention concerns a method for installing a hatch (34) to a subsea structure (10) by connecting the hatch to the subsea structure by at least one hinge (20) having a first mounting portion (21), a second mounting portion (22), a flexible portion (23) interconnecting the first and second mounting portion allowing a pivot connection between the first and second mounting portion. The installation steps comprise •—inserting a protrusion (23) of the first mounting portion (21) into an installation hole arranged in the subsea structure (10), •—inserting a protrusion (24) of the second mounting portion (22) into an installation hole arranged in the hatch (34), thereby •—engaging the first mounting portion (21) of the hinge (20) for anchorage with the subsea structure (10) and engaging the second mounting portion (22) for anchorage with the hatch (34) thereby arranging for the hatch to pivot between a closed and an open position about a pivot axis provided by the flexible portion of the hinge. The invention also concerns a hinge and an assembly for subsea use.

The invention concerns a method for installing a hatch (34) to a subsea structure (10) by connecting the hatch to the subsea structure by at least one hinge (20) having a first mounting portion (21), a second mounting portion (22), a flexible portion (23) interconnecting the first and second mounting portion allowing a pivot connection between the first and second mounting portion. The installation steps comprise inserting a protrusion (23) of the first mounting portion (21) into an installation hole arranged in the subsea structure (10), inserting a protrusion (24) of the second mounting portion (22) into an installation hole arranged in the hatch (34), thereby engaging the first mounting portion (21) of the hinge (20) for anchorage with the subsea structure (10) and engaging the second mounting portion (22) for anchorage with the hatch (34) thereby arranging for the hatch to pivot between a closed and an open position about a pivot axis provided by the flexible portion of the hinge. The invention also concerns a hinge and an assembly for subsea use.

The invention concerns a method for installing a hatch (34) to a subsea structure (10) by connecting the hatch to the subsea structure by at least one hinge (20) having a first mounting portion (21), a second mounting portion (22), a flexible portion (23) interconnecting the first and second mounting portion allowing a pivot connection between the first and second mounting portion. The installation steps comprise inserting a protrusion (23) of the first mounting portion (21) into an installation hole arranged in the subsea structure (10), inserting a protrusion (24) of the second mounting portion (22) into an installation hole arranged in the hatch (34), thereby engaging the first mounting portion (21) of the hinge (20) for anchorage with the subsea structure (10) and engaging the second mounting portion (22) for anchorage with the hatch (34) thereby arranging for the hatch to pivot between a closed and an open position about a pivot axis provided by the flexible portion of the hinge. The invention also concerns a hinge and an assembly for subsea use.