Today I excavated half of my foundation trench, and I had some revelations about digging. For one thing, I've had the wrong idea about shovels. I always thought that a shovel was a perfect digging tool, but digging a hole, especially a big one, with just a shovel, is misery. Shovels are good for scooping and moving loose materials, and terrible for digging into compacted soil. In my opinion, you need two tools to dig a hole without breaking your back. You do need a shovel, but you also need a pick axe.
I started my foundation digging today with just a shovel and it was terrible. To get the shovel into the ground you have to use a lot of muscle, you thrust the thing into the ground, and then you have to stomp on it to get it properly wedged in. It is a lot of work. With a pick axe you lift it up and then pretty much let gravity do it's thing. It is a pointed weight on the end of a lever, a prefect design for breaking up earth. The energy input is minimal compared to the gain. With a shovel there are no mechanics increasing the energy you put it. You just have to work hard.
Once I figured out the digging secret, the work went pretty quickly. I would take a few swings with the pick axe to break up an area then shovel out the dirt. It took about five hours to dig half the foundation trench.
Wednesday, August 5, 2009
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