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Driveway And Grade Transitions

 
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Old 02-23-2019, 10:10 AM   #1
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Driveway And Grade Transitions


I have a site where the road itself is going up a hill and when you turn into the driveway, the driveway goes up a slope in a different direction perpendicular to the road. The temp driveway currently has a 15% grade (will likely be ~12% final grade).

When larger trucks (well drilling rig, concrete pump truck) turn into the driveway from the road direction that is up-hill, they scrape bottom on their back end in the middle of the road, but, are fine if coming from the down-hill direction of the road when they turn into the driveway. I can control that during construction, but, I'm worried about fire trucks getting up the hill long-term.

I'm thinking I'm going to have to make the first ~40ft a more subtle grade as a transition to a steeper (~12%) grade, but, I was wondering if there are any written guidelines for this. I can only really find maximum slope, but, not detailed information like transitions such as this.

Any suggestions either on written guidelines, or, "rule of thumb" type information?
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Old 02-23-2019, 11:05 AM   #2
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Re: Driveway And Grade Transitions


None I know of for driveways, there is just too much variation in vehicles.

If you're concerned about fire trucks, contact the fire Department and go over it with them.

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