Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 5 · column 4 of 5 · from the scan, no model involved
understand? How about “grade?” A grade is the inclined portion of your driveway as you drive along it, where ' you go up or down. Grades below 15 percent are no trouble (VDOT’s grades are usually 12 percent or less). If you had a lot of money, you could buy a military HUMVEE, configured for public sale, and go up or down a 60 percent grade; but emergency vehicles, such as fire trucks or ambulances, appreciate 15 percent or less; and one of those very large moving vans is restricted to about an 8percent grade.
A “curve” in your driveway is obvious. It’s a bend with a certain radius. In many cases it’s hard to measure the radius of a curve. The radius runs into woods, or a hill, or out into space if you have an inside curve rounding land that falls off. You can’t easily sweep a tape measure under such conditions to track the center of your roadway as it describes a curve. If you can measure it, an 80-foot or more curve radius appears to be reasonable as far as getting a long truck around it is concerned.
“Slope,” incidentally, is the .slant of ground, high on one side, low on the other, and through which your driveway has been cut. A HUMVEE may be able to go across a side slope of 40 percent, but your vehicle or anything else will tumble down such a slope. Your driveway should stick to the horizontal when crossing a slope.
Any other cats and dogs? How about overhead clearance?
This is the open space above your driveway, free of tree limbs, vines, wires, and other obstructions such as building overhangs. VDOT uses a 15
97.2%