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Fuel Tanker Truck maximum slopes

Fuel Tanker Truck maximum slopes

Fuel Tanker Truck maximum slopes

(OP)
I am a civil engineer designing a tanker truck delivery driveway in Maryland, USA. The connecting road is about 10% slope and the entrance connects perpendicular to the connecting road.
Without re-grading the connecting road the entrance ramp will need to match grade at 10%. My question is, is there a recommended maximum slope and cross slope for the entrance road that the design needs to adhere to so condition do not result in a roll over situation? Auto-turn at 5mph has been performed for turning radii design.

Thanks
Michael

RE: Fuel Tanker Truck maximum slopes

The API may have some standards... 10% is about as great a slope you would want... Although they have ample clearance, for other vehicles you might consider vertical transition curves to 'round' out any abrupt changes in grade.

Dik

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