Alternating Tread Device Vs Ships Ladder

Alternating tread ladder crossover 2 alternating tread ladders connected by a platform industrial.

Alternating tread device vs ships ladder.

Precision s aluminum alternating tread stair is an alternative to a traditional ships stair. 76 sanderson ave lynn ma 01902 call. This stair saves space and you can go down face forward. Alternating tread ladders available in a variety of sizes.

This is an alternating tread stair. Since the treads alternate this stair is not considered to be as safe as a standard ship ladder or spiral stair. Alternating tread ladder with platform. How do these devices differ from each other.

800 244 6231 or 781 623 7970 fax for canada call today. The dimensions of ship ladders vary based on available space so they are always custom fabricated. Duvinage custom designs and fabricates alternating tread stairs to the highest industry standards. The angle of the ladder is usually 60 70 and the design should use the shallowest angle possible within this range.

Available in steel. All alternating tread ladders have a 350 pound capacity. Aluminum ship ladder with platform. But for the purposes of this answer let s assume that the stair does have the same number of treads on both sides.

Easy assembly and quick ship available. The riser height is reduced and the run is longer than a typical ship ladder but the steps alternate. Let s look at how osha defines stairways alternating tread stairs ship stairs ship ladders and fixed ladders to understand the difference. Alternating tread stairs are preferred in many industrial and commercial applications by achieving vertical access with a shorter horizontal span than traditional stairs and greater functionality than traditional ladders.

Ships ladders ship stairs ship ladder stairs alternating tread stairs fixed ladders are all terms that can get confused and sometimes used interchangeably. The width of ship ladders is usually 24 and the tread depth is 6. Most alternating tread ladder stairs have the same number of treads on each side which isn t absolutely necessary and i suspect it s based more on aesthetics than on construction or comfort.