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PAVEMENT STRUCTURAL NUMBER 2
- Thread starter mikewi
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You'll need several more factors. There is an "equation" for SN once you have all factors, but it is a whopper. I wouldn't try to write a spreadsheet for it. There is a nomograph for SN here:
Flexible Pavement Design Nomograph from American Association of State Highway and Transportation Officials, (1993). “AASHTO Guide for Design of Pavement Structures”.
A good, brief discussion of technique is here:
Engineering is the practice of the art of science - Steve
Flexible Pavement Design Nomograph from American Association of State Highway and Transportation Officials, (1993). “AASHTO Guide for Design of Pavement Structures”.
A good, brief discussion of technique is here:
Engineering is the practice of the art of science - Steve
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As LHA says, it's a whopper....I did a spreadsheet for it, but it essentially required that I break down the nomograph equation into three parts so that Excel could take it.
Use the AASHTO equation and keep it general with flexible input. That way you can design the pavement section based on a variety of input factors, not just CBR or other stability criteria.
Use the AASHTO equation and keep it general with flexible input. That way you can design the pavement section based on a variety of input factors, not just CBR or other stability criteria.
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