Replies

1. GBA Editor
   Martin Holladay | Mar 23, 2012 12:44pm | #1

   Carl,
   Here's a link to a likely book. (Full disclosure: I don't know if this book has the math formulas you seek.)
   http://store.finehomebuilding.com/tauntons-for-pros-by-pros-building-stairs-andy-engel-070929.html

2. 
   FosterLyons | Mar 23, 2012 02:00pm | #2

   Carl,
   Look for this book:

   "Modern Practical Joinery" by George Ellis. Linden Publishing Company

   I don't think you'll be able to go straight to the CNC machine after reading the few chapters in this book that discuss stairs and railings but it's a good start.

   Good luck. You picked one of the few topics that may be more difficult than durability of wall assemblies.

3. 
   DWBuilder | Mar 23, 2012 05:58pm | #3

   Carl,
   "A Simplified Guide to Custom Stairbuilding and Tangent Handrailing" by George R. diCristina teaches the tangent method for constructing curved handrail. I don't think it has the math formulas you are looking for--he uses geometric constructions. But there is a wealth of information. If you go to Amazon.com you can preview the book I believe.