: Assuming a nice board with straight grain (no runout) was to be
: turned into a 1:3 [] stringer - taller than it is wide -
: designed to resist vertical bending, would it be stiffer with
: the grain running horizontally [=] or vertically[||] when viewed
: from the end of the stringer?

: I've looked online, but it's a bit of a hard question to put to a
: search engine!

: My guess is that there's probably not a lot of difference as the
: tension and compression forces are 'along' the grain regardless?

: Simeon.

Same as most beam designs, the grain if I read what you're saying needs to be horizontal, wood beam failures are usually in compression.

Also if the grain were oriented the opposite direction the beam wouldn't be stable will tend to tilt to one side or the other as forces are increased which will cause an early failure.

Bill H.