Step 7: The Side Supports

In each side of the stair we gonna use two large and strong beams to attach the steps.... so we need to measure it and be sure that fits..

In this case we use a 10' beam and 2" thick.

We have to draw a scheme for this to make sure we are in the right direction.

First you need to se where you wanna put your stair... we use a very easy and secure way to attach this beams to the floor and to our second floor. (see the image). We use the first beam of the second floor to lay our stair... and we only put 4 guides to make it go straight, not for support part of the weight.

In the down part we put two strong steel parts to support the weight and this two parts goes attached to the floor by two big 1/2" screws. This is this enough to keep the stair in the floor.

<p>Do you think the premise of these stairs could be build to be used as an unfolding attic stairway? I've got to get a safer way up to that area after falling off a ladder. And a standard pull down ladder isn't the way I want to go. I'd like to be able to descend from the attic forward facing and I don't really have the space to do much more than this anyway. Anyone ever build an attic pulldown stairway?</p>
I&acute;m pretty sure it may work... maybe you can take the mechanical parts of a regular pull down ladder and adapt this design... I think the problem will be about the space you need... the size may be as much as the double compared to a regular pull down ladder... so you have to make sure the hole in the roof must have the right space.<br>Instead of having steps of 4 inches...like in a regular pull down ladder... you need at least 8 inches for this design to work safely.<br><br>Hope you try it!
Can't it be dangerous? especially when sleepy?
I guess maybe... but you get use to really fast...<br>we use it all the time... and even kids use it...<br>
I must say that it's an example of good designing.
This was made by the Brazilian inventor Santos Dumont, in the early 1900s.<br>http://www.youtube.com/watch?v=9ai2v2xzDgc&amp;NR=1
Frikin amazing!!!<br>we saw this in old european magz but they didnt say anything about the inventor...<br>Thanks!!
I love it! I just built something like it. Look for &quot;Single Step Stairs&quot; but it is only four steps. Great job.
thank you!!!
Good work. FYI- They are called Alternating Tread Stairs.
It&acute;s a great solution... need some work... but its very effective!! good luck!
these will work well in my new shop to save floor space :)