Friday, October 9, 2009

Driveway

Getting bids to get gravel put down on the driveway so it will be usable. Pretty steep though, I think it goes up about 30+ feet in elevation over 175 feet. (For those who don't like math, see http://www.1728.com/gradient.htm - yikes pushing 20%).

For comparison, Tour de France climbs are half that steepness - the Alps average 7-8% where the big climbs in the Pyrenees average 8-9%. Of course, that is a silly comparison as those climbs continue for 15 miles at high altitude. But ridiculous comparisons are more fun than mundane ones.

I measured the driveway at 175 feet long more or less at about 8 feet wide with a sorta round 30 foot circle (well, 40x20 ft space) up on top and a spot at the bottom. If that is 2500 sqft or so, then we need about 45 tons of driveway rock mix. If we try to even out the grade, and we need to do that if possible, we would need about 50 tons. Or so.

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