You can save at least the half of the space without the problems of having smaller steps.
Alternating tread ladder plans.
Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair.
As i can provide slipresistant stair inc bim content alternating tread each of your spiral and can have standard rise and.
Is on the code makes no mention of alternating tread depths riser heights width overhead.
Industrial stairway crossover footprint.
Alternating tread ladder crossover 2 alternating tread ladders connected by a platform industrial stairway calculate space requirements at various heights and angles.
The unused half tread is removed to provide more tread depth for improved safety and comfort.
Designed to be used as a stair with users facing the direction of travel when climbing up and down.
The idea behind them is your foot only uses half of the stair so you can cut the other half out to allow more step up room between treads that would otherwise overlap the space savings of a ladder but will full treads and a reasonable rise.
I ve done alternating tread stairs before also called ship ladders.
This is a great option for people who dont have too much space in their offices or house for a regular long stair.
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.
Alternating tread stair plans stairs may not seen many alternating tread staircases made to measure.