was looking at their prices and came across this

http://www.welkerscustomlumber.com/r...s/IMG_7179.JPG


the stair treads look to be cut a little too deep for that span as
it stands in that photo

would add another set of posts and a beam midspan just in case

and there are also some unfortunate knots right at the apex of the
tred cuts which could be a delayed problem

adding the treds and a railing and coats of paint and maybe some
non skid surface and the weight starts to accumulate

then there is the live loading