Alternating Stair vs. Ships Ladder vs. Conventional Stair

Which one should I choose? This video might help you decide. Enjoy!
Here we've got 3 stairs in a row.
1. Ships Ladder
2. Alternating-tread device
3. Conventional stair

We build a lot of alternating stairs but occasionally someone wants a ships ladder. It's not quite as comfortable to climb since the treads aren't normally as wide but its a great option for someone who want the look of a ships ladder. The ladder in this picture has a graspable handrail integrated into the right and left stringers.

Now I'll walk up and down these to illustrate. As you can see, my size 11 shoes are quite a bit longer than the width of the treads on the ships ladder. On the other hand, the alternating tread device has ample room for my foot.

Some of you will prefer a ships ladder, others an alternating stair and still others will prefer to stick with a conventional stair. Let us know if we can build one of these three for you.

[ComunaRafAteu]

This type of staircase, known as 'alternating tread stairs, ' is actually called the 'Santos Dumont Staircase' because it was invented by the Brazilian aviation pioneer Alberto Santos Dumont. Fun fact: Santos Dumont is not only the creator of this unique staircase design, but he is also recognized as the true inventor of the airplane, achieving the first public, self-powered flight in 1906 with his 14-Bis. Additionally, he inspired the popularization of the wristwatch when he asked his friend Louis Cartier to create a practical timepiece to use during his flights!

[onomatopoetisk]

I first saw this type of alternating staircase in a Norwegian show renovating summer houses. In Norway they apparently call it ""sambatrappe" (samba stairs), which I thought was kinda cute.

[jimmydewitte]

Hey sir. Could I have closer look on the Integrated handrail. Seems quite interesting

[marklundegren]

Are these building code compliant, whether to a loft, attic, or unfinished cellar?

[livingworkingoutsidebox]

Thanks for sharing.

Have you ever built an alternating tread device for an rv? To get from the inside to a rooftop deck?

[Drake-ThePredator]

*How much for alternating stairs? I'm interested*

[jimmiller]

Is the front of the tread on the Alternating Tread Device weak and does it ever splinter off?
How thick is it, it looks an inch and a half.