ORIGINAL: killadoe
It is stronger than 2x4's I guarantee it, They are probably as big around as 4x4's but are really light...
No it's not. Strong and light don't belong in the same sentence when talking about wood. Take a live sassafrass(sp?)limb and a live pine limb, see which one you can break in your hand the easiest. Sassafrass makes a good tea, but a poor choice for a ladder IMO.