What does 4 percent grade mean on the roadway?

Question

What does 4 percent grade mean on the roadway?

Answer 1

I dont know.but thats a good Q ...............?

Answer 2

It means 4 in 100 (as in 100%)

For every 100 metres, feet, kilometres, inches or whatever - you rise by 4 of the same.

If the hill is marked 4% incline or gradient and its length is 100feet, by the time you reach the top of it you will have risen by 4 feet....

I think....

Answer 3

There's a four degree incline/decline.

Answer 4

The grade is calculated by the amount of rise (up or down) over a given distance.  If you travel 100 feet and the roadway elevation changes by 4 feet, it's a 4% grade.  Over a mile, your elevation will change by 211.2 feet.  

I've provided a link to a website which explains grade in more detail.

Answer 5

It is a measurement of the slope (up or down) of a road. 4% means the road slopes 4 feet for every 100 feet of length. 6% means 6 feet in 100, etc...

Answer 6

It is the degree or angle that the road changes.

Answer 7

when you look at how the grade is calculated, one is tempted to interchange percent with degree, which is wrong, since there is no such thing as a 100 degree grade. grade percentages are based on a 45 degree incline as a 100% grade, thus a 4% grade equals 4% of 45 degrees which equals 1.8 degrees.off the horizontal plane. a 10% grade would be 4.5 degrees.

Answer 8

4 feet of incline for every 100 feet of travel.