The four (4) end ladder legs (corner posts) are 2x6's and are either 73" (regular height) or 85" (extra tall) length or 39" for the high rise bed.  Cut 4 ladder legs from the 2x6x8' boards.

The spacing between the rungs is 11".  So you get, starting from the bottom, an 11" gap, then a

3-1/2" rung, then 11" gap, then 3-1/2" rung, and so on.

Notches need to be cut into legs to fit a 2x4

(1-1/2" x 3-1/2") rung.  This can be accomplished

in a few ways:

(1) Doing one leg at a time, use a table saw and

     a dado blade, slide the board over the blade to

     cut the notches, this is for experienced

     woodworkers only.

(2) Clamp all four legs together, using a circular

     saw, cut a series of slits 1-7/16" deep and about

     1/16" apart.  Then use a chisel to clean out the

     notched area.

(3) Doing one leg at a time, using a 3/8" drill bit,

     drill a hole at the base of each notch.  Then

     using a jig saw cut the complete notch out from

     the leg.