Picked up some good size rounds of Black Locust the other day. They stand about 18" high and have a diameter of about 20". Went and got (2) 2x10x8's from the lumber yard to make a ramp for my minivan. They rolled up just fine and rolled down even easier. Couldn't lift them by myself, so I improvised with the ramp. With those dimensions....any guesses on how much they may weigh??? Grabbed 8 and that was all the minivan could hold. Going back for the other 7 in the morning.