Alternating Tread Ladder Details

The unused half tread is removed to provide more tread depth for improved safety and comfort.

Alternating tread ladder details.

Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair. Alternating tread ladder crossover 2 alternating tread ladders connected by a platform industrial stairway calculate space requirements at various heights and angles. Compared to conventional stair treads these stairs allow the user to descend face forward giving a clear view of the floor below. Designed with tubular side rails to provide maximum structural integrity while keeping the overall stair weight to a minimum.

Industrial stairway with platform footprint. As with all precision s products these stairs are built to project conditions and shipped to the job site completely assembled ready for installation. But with an alternating tread stair the difference in height between the right and left treads is the unit rise using the guidelines of commercially built alternating tread stairs i try to get the unit rise between 6 1 2 in. Aluminum alternating tread stair is an alternative to a traditional ships stair.

I ve done alternating tread stairs before also called ship ladders. Precision ladders at series of aluminum alternating tread stairs were designed with tubular siderails to provide maximum structural integrity while keeping the overall stair weight to a minimum. The steeper the angle the larger the rise.