We love alternating tread stairs because they are such great space savers; this photo shows the comparison. For one thing, they don't meet a lot of building codes. Even Lapayre Stair, a big manufacturer, has an entire
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Small Scale Homes: SPACE SAVING STAIRS & LADDERS FOR SMALL HOMES
Discover ideas about Attic Ladder
Space-saving, safety stair with alternating tread design for steep applications in lieu of ships' ladders and vertical ladder. Lapeyre Stair’s Alternating Tread Stair is ergonomic, improves safety, and is efficiently designed.