The steeper the angle the larger the rise.
Alternating tread ladder details.
Designed to be used as a stair with users facing the direction of travel when climbing up and down.
Aluminum alternating tread stair is an alternative to a traditional ships stair.
Industrial stairway crossover footprint.
Industrial stairway with platform footprint.
Alternating tread ladder crossover 2 alternating tread ladders connected by a platform industrial stairway calculate space requirements at various heights and angles.
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.
I ve done alternating tread stairs before also called ship ladders.
The unused half tread is removed to provide more tread depth for improved safety and comfort.
Designed with tubular side rails to provide maximum structural integrity while keeping the overall stair weight to a minimum.
Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair.
As with all precision s products these stairs are built to project conditions and shipped to the job site completely assembled ready for installation.