A measurement system according to the present embodiment includes a work tool, a sensor unit, an acquisition unit, a change unit, and a calculation unit. The work tool has a tread board with a variable width. The sensor unit is provided in the work tool. The acquisition unit acquires, from the sensor unit, time-series data on gravity center sway of a worker, in a state where the worker is standing on the tread board. The change unit reduces the width of the tread board in response to a trigger. The calculation unit calculates, from the time-series data, an evaluation value for the gravity center sway of the worker, for each width of the tread board.

A measurement system according to the present embodiment includes a work tool, a sensor unit, an acquisition unit, a change unit, and a calculation unit. The work tool has a tread board with a variable width. The sensor unit is provided in the work tool. The acquisition unit acquires, from the sensor unit, time-series data on gravity center sway of a worker, in a state where the worker is standing on the tread board. The change unit reduces the width of the tread board in response to a trigger. The calculation unit calculates, from the time-series data, an evaluation value for the gravity center sway of the worker, for each width of the tread board.

A work platform configured to support one or more workers in proximity to a workpiece. The work platform includes sliders that are aligned along the length of the workpiece. The sliders are laterally movable towards and away from the workpiece. The sliders are individually movable with a position of each of the sliders relative to the workpiece being a function of the rotational position of the workpiece.

A work platform configured to support one or more workers in proximity to a workpiece. The work platform includes sliders that are aligned along the length of the workpiece. The sliders are laterally movable towards and away from the workpiece. The sliders are individually movable with a position of each of the sliders relative to the workpiece being a function of the rotational position of the workpiece.

Disclosed is an arrangement including a staircase as well as walkway systems. The staircase includes a transitional member, and the walkways incorporate grate supports in order to facilitate the connection to adjacent structures. The arrangement also utilizes angled members which are configured with a reinforced flange existing in a dimension that has higher load requirements than the other flange. A novel step configuration is also disclosed.

Disclosed is an arrangement including a staircase as well as walkway systems. The staircase includes a transitional member, and the walkways incorporate grate supports in order to facilitate the connection to adjacent structures. The arrangement also utilizes angled members which are configured with a reinforced flange existing in a dimension that has higher load requirements than the other flange. A novel step configuration is also disclosed.

A lightweight plate that contains polycarbonate resin and achieves good strength and formability while providing reduced weight, and a lightweight panel including such a lightweight plate. A lightweight plate includes a resin foam plate having an expansion ratio of 1.2 to 4, and a resin sheet containing fiber and overlaid on a major surface of the resin foam plate. The resin foam plate includes a polycarbonate resin in not less than 50 wt. %. The polycarbonate resin has a viscosity-average molecular weight of 10000 to 100000. The lightweight plate achieves reduced weight by having an expansion ratio of 1.2 to 4, and achieves good strength and formability by including a polycarbonate resin in not less than 50 wt.% and having a polycarbonate resin of a viscosity-average molecular weight of 10000 to 100000.

A removably mountable temporary work surface is disclosed herein. In some embodiments, the removably mountable temporary work surface includes a toolless mounting bracket, a spacing bar, and a hinge affixed to a work surface. The toolless mounting bracket may be configured to mount to construction framing. The spacing bar can be configured to extend or retract for use and storage. In various configurations, the work surface may include a metallic material and include one or more mechanisms to secure contents to the work surface, such as magnetic tethers. The work surface can be sized to form a substantially contiguous surface when mounted to adjacent framing posts.

A lightweight, multi-function scaffold includes an adjustable height platform that slidably mounts between two ladder frames. The side rails of the platform are reversible so that they can be mounted between the ladder frames in either a first orientation or in a second orientation. In the first orientation, the adjustable height platform is vertically movable between a first threshold and a maximum height. In the second orientation, the adjustable height platform is vertically movable between a second threshold and a minimum height. The ranges of movement in the first and second orientations may overlap.

A scaffold safety assembly for facilitating a worker to service a scaffold includes a scaffold that has a frame comprising a leg portion. A step unit is removably attachable to the leg portion of the frame of the scaffold to facilitate a worker to stand on the step unit. The step unit extends laterally away from the leg portion when the step unit is removably attached to the leg portion. In this way the gate facilitates the worker to access various areas of the scaffold without standing on the scaffold. A gate is removably attachable to the leg portion of the frame of the scaffold. Additionally, the gate is positionable adjacent to the platform to inhibit the worker from falling off of the platform.