I’ve been playing with several ideas for the stairs at CSH1.0 (Case Study House 1.0). We definitely want to continue the theme of “open and airy” on the interior – so an open tread stair design was almost a given. But, having never designed or built one, it’s been a fun challenge that still has plenty left to be resolved. The wood I ended up finding are 2″ planks of Maple and Cherry (found a great woodshop DUNLAP WOODCRAFTS, I foresee many visits to this shop in the future. It is a great family run shop that really solidified my design for the stairs). Based on the code regulations, the gap between the treads can only be 4″ MAX. The rise for each tread will be 7.5″ – so I needed to design something to fill in the gap. I decided to go with a 1″ piece glued up to the tread on the backside. Figure this will help keep kids toys from sailing off the stair and crashing down below.

The plan is to biscuit join a cherry and a maple board to make a 12.5″ tread – they will overlap/nose and tail to really be an 11.5″ tread. Each board is VERY different – grain, color, blemishes, etc…should make for a beautiful staircase…I HOPE! Here are a few images of the current progress:
A few sketches of the design. (excuse the sloppy drawings – they were done on my tablet on the BUMPY metro!)

Construction Notes - Page 2 Construction Notes - Page 6

“Cleaned up boards” – Daniel @ Dunlap Woodcrafts was nice enough to mill the raw wood on 3 sides so they’re ready to be joined. A couple photos of the work in progress….
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