Bearing Capacity of Unpaved Roads
Bearing Capacity of Unpaved Roads
(OP)
Anyone have a good reference to calculate bearing capacities for unpaved roads/parking areas?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Bearing Capacity of Unpaved Roads
|
RE: Bearing Capacity of Unpaved Roads
RE: Bearing Capacity of Unpaved Roads
Then again, maybe you are talking about the California Bearing Ratio.
Not enough to go on for the original post.
f-d
¡papá gordo ain’t no madre flaca!
RE: Bearing Capacity of Unpaved Roads
That is why I need this.
RE: Bearing Capacity of Unpaved Roads
RE: Bearing Capacity of Unpaved Roads
Mike Lambert
RE: Bearing Capacity of Unpaved Roads
RE: Bearing Capacity of Unpaved Roads
thread274-218207: CBR vs. R-Value
RE: Bearing Capacity of Unpaved Roads
You are probably looking for a stability value as determined by the California BEARING Ratio (CBR) test. This is a value that is directly used in the design of roadway structural sections whether paved or not. Also, you don't need the total load of the fire equipment as much as you need the axle distributed loads for the equipment. This is the general basis for the design.
RE: Bearing Capacity of Unpaved Roads
I'll stick with what I know and should have expected the responses I received.
RE: Bearing Capacity of Unpaved Roads
Your sarcasm is, in my opinion, not warranted. You asked for a building foundation parameter, not a pavement parameter, yet pavement was your application.
RE: Bearing Capacity of Unpaved Roads
And don't ask for bearing capacity or they won't know what you need. Ask for traffic axle load ratings. That also may require trucks per day also.
RE: Bearing Capacity of Unpaved Roads
I have been asked to provide graveled driveway and private road sections for a '75,000 lb truck'. I have explained the criteria is wrong but, the Fire Marshall basically says 'My bigger trucks are 75,000 lb and The road must hold it.'
I smile, provide the various regulator (usually an engineer) what should work and have been countered with 'how do you know that will work?'. I opine that those who who can't ask proper questions may not understand when a proper answer has been provided.
Yes, proper testing & design, using common methods will work. The 75,000 lb truck criteria without the axle & tire configuration is a silly criteria. I say, Go to the firehouse and count the axles & tires.