On Tue, 4 Nov 2014 18:19:28 -0500, "Don
Phillipson" wrote:

"Vandy Terre" wrote in message
.. .

where do I find proper step length and height?

Americans can get this information either from city hall
(the building code and permit office) or from the building
research branch of the National Bureau of Standards.

Building code and permit office here is little
help unless you are building barns. All kinds of
information on barns, not much on homes.

THX