pnichols wrote:
I found that plastic blocks I used to carry in our RV cracked on rough (rock) surfaces in camp sites. They probably would develop cracks,too, when used at various angles and supported strangely as in my photo above.
Homemade wooden blocks as shown in my photo above are indestructible ... and handy to carry and place with handles installed. I made each step-block of mine from a piece of 2X8 redwood.
Oh, I understand now. I still think that you can build a pyramid of plastic bricks as high as what you show in the pic, and can drive up it without any problems. But you're right, if you try to span them, un-supported, they probably can't take the weight. They aren't designed to be used in that way. They are designed to stack.