A deck apparatus for assembly with a pair of opposing brace frames interconnected by a pair opposing connector bases and a deck board top frame having a plurality of deck boards disposed thereon, the connector bases having opposing posts for being received in openings in a lower end of the opposing brace frames ends and the deck board top frame having posts for being received in an upper end of the opposing brace frames, and optionally attaching a stairs riser having a plurality of spaced-apart treads or a ramp riser for extending from a deck surface at a height to a vertically lower support surface.

A deck apparatus for assembly with a pair of opposing brace frames interconnected by a pair opposing connector bases and a deck board top frame having a plurality of deck boards disposed thereon, the connector bases having opposing posts for being received in openings in a lower end of the opposing brace frames ends and the deck board top frame having posts for being received in an upper end of the opposing brace frames, and optionally attaching a stairs riser having a plurality of spaced-apart treads or a ramp riser for extending from a deck surface at a height to a vertically lower support surface.

A modular staircase frame is lightweight, adjustable, and may be brought to a worksite in pieces to be assembled. The modular staircase frame includes two opposing sets of laterally spaced blades, which may be adjustably connected to form laterally spaced ascending frame members. The opposing sets of blades may include a first pair of blades and a final pair of blades to anchor the frame to a first and second surface, respectively. The blades have openings for adjustable attachment of adjacent blades. The frame may also include stiffeners for added structural support. The opposing sets of laterally spaced blades may further include one or more corner blades for changing the direction of the staircase. Once the frame is installed, treads (temporary or final) can be removably installed on the frame to create a staircase.

A stair stringer may include a body. The body may include a horizontal arm, a center angled portion coupled to the horizontal arm, and a vertical arm coupled to the center angled portion. The stair stringer may also include a first appendage coupled to a first edge of the horizontal arm, a second appendage coupled to a second edge of the horizontal arm, a third appendage coupled to a third edge of the vertical arm, and a fourth appendage coupled to a fourth edge of the vertical arm. The fourth edge may be adjacent the third edge. The first appendage, the second appendage, and the third appendage are parallel with respect to one another. A stairway system may include a first stair stringer and a second stair stringer. The second stair stringer may be an architectural chiral with respect to the first stair stringer.

A stair stringer may include a body. The body may include a horizontal arm, a center angled portion coupled to the horizontal arm, and a vertical arm coupled to the center angled portion. The stair stringer may also include a first appendage coupled to a first edge of the horizontal arm, a second appendage coupled to a second edge of the horizontal arm, a third appendage coupled to a third edge of the vertical arm, and a fourth appendage coupled to a fourth edge of the vertical arm. The fourth edge may be adjacent the third edge. The first appendage, the second appendage, and the third appendage are parallel with respect to one another. A stairway system may include a first stair stringer and a second stair stringer. The second stair stringer may be an architectural chiral with respect to the first stair stringer.

A stair assembly includes at least one joist comprising an upper wall, a first lateral wall extending from the upper wall, and a second lateral wall extending from the upper wall. At least one stair step support bracket includes a tray support wall, a first side wall extending from the tray support wall, and a second side wall extending from the tray support wall. The first and second side walls define a pair of first front aligned positioning holes configured to receive a first set pin and a pair of first rear aligned positioning holes configured to receive a second set pin. The pairs of first front and rear aligned positioning holes disposed such that when the first and second set pins received therethrough contact the upper wall of the at least one joist, the tray support wall is positioned at a first rise dimension.

A modular platform system utilizing a number of components including a platform. The platform is configured so that each of the components may interchangeably connect to any side of the platform. The components include, for example, handrails and stairways, as well as other platforms. The platform and most of the components are formed from single, continuous pieces of metal.

A bilateral bracket for steps to be fixed on a stringer having a number of steps and risers, the bilateral bracket having a generally flat body defining a framing edge having a riser edge and a tread edge; the riser edge having a riser flange perpendicularly extending therefrom in a first direction; the tread edge having a tread flange perpendicularly extending therefrom in the first direction, wherein the tread extends between a distal end and a proximal end; the framing edge defining an acute angle relative to each other, wherein the flat body does not project beyond a profile defined by the distal and proximal ends inward of a profile defined by the framing edge; and a stringer edge along the body, opposite the framing edge, wherein the stringer edge has an array of holes for selectively attaching to either side of the stringer.

The invention relates to a telescopic staircase to be installed on construction sites for providing a safe staircase for workers during building construction. The telescopic staircase comprising at least one lateral guard comprising a top rail, a bottom rail and at least two newels, the bottom rail having a plurality of connecting holes, and a plurality of tread assembly comprising a tread plate, at least two stringer portions and at least two pairs of support members, each support member having at least one connecting hole, in which the at least one lateral guard includes a first portion being retractable into and extensible from a second portion, in which each support member substantially forms a 45° angle with the tread plate, and in which the support members are to be attached to the top surface of the bottom rail via attachment means through the connecting holes.

The invention relates to a telescopic staircase to be installed on construction sites for providing a safe staircase for workers during building construction. The telescopic staircase comprising at least one lateral guard comprising a top rail, a bottom rail and at least two newels, the bottom rail having a plurality of connecting holes, and a plurality of tread assembly comprising a tread plate, at least two stringer portions and at least two pairs of support members, each support member having at least one connecting hole, in which the at least one lateral guard includes a first portion being retractable into and extensible from a second portion, in which each support member substantially forms a 45° angle with the tread plate, and in which the support members are to be attached to the top surface of the bottom rail via attachment means through the connecting holes.