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Offer
From Non Premium Member |
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Type: |
Sell |
| Subject: |
Guardrail Design |
| Description: |
Energy Absorbing Guardrail Terminal Platform Grading
1. The purpose of the guardrail terminal platform is to reproduce to the extent practical the physical conditions under which the terminal unit was tested for its NCHRP 350 test level certification.
2. The grading of the platform (from the platform’s edge perpendicular to the roadway) must not be any steeper than a 4:1 slope even if it requires grading down to the toe of the slope. This is to minimize the possibility of inducing lateral (side to side) instability to an errant vehicle.
3. The algebraic difference of the approach grade (from the platform’s edge parallel to the roadway slopes) compared to either the platform’s grade or the slope the approach grade ties into, must not exceed 10%. This is to minimize the possibility of inducing longitudinal (front to back) instability to the errant vehicle.
4. The above criteria are to allow the vehicle to remain stable if it leaves the pavement. It is essential that the approach grading for the platform blend smoothly from its edge to the roadway slope. In no circumstance should the design of the platform be compromised such that the platform itself could induce instability to the errant vehicle.
5. The “minimum acceptable design” for guardrail platforms without actually constructing a platform is to provide smooth grading with 4:1 or flatter slopes perpendicular to the roadway approaching, adjacent to, and behind the terminal for its entire length.
6. The “preferred design” should be used whenever possible and is required on roadways such as Interstates. For other types of roadways, if the preferred design cannot be accommodated due to right-of-way, environmental, or other constraints, then the “alternative design” should be used. If the constraints are still such that the “alternative design” cannot be accommodated, then the “minimum acceptable design” must be provided. The “minimum acceptable design” is only appropriate if the other platform designs cannot be provided.
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| Placement Date: |
May 10, 2010 |
| Expiration Date: |
May 10, 2011 |
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Company Name: |
China Cnow Common Nail Factory |
| Contact Person: |
li ga |
| City: |
dezhou |
| Country: |
China
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| Local Time: |
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| E-mail: |
Premium
Membership Required (Join Free Today) |
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| Introduction: |
Common Nails, Iron Nails, Wire Nails, Brass Nails, Finishing Nails, Stainless Steel Nails, Concrete Nails, Roofing Nails, Coil Nails, Plastic Strip Nails, Common Round Nails, Bullet Head Nails, HOrseshoe Nails, Paper Strip Nails
China Cnow Common Nails Factory is one of the leading manufacturer of common nails as well as other Nails products in China.
Since its foundation in the year 1989, this factory is engaged in productionand export of Common Nails, Iron Nails, Wire Nails, Brass Nails, Finishing Nails, Stainless Steel Nails, Concrete Nails, Roofing Nails, Coil Nails, Plastic Strip Nails, Common Round Nails, Bullet Head Nails, HOrseshoe Nails, Paper Strip Nails, etc.
Our main export markets are Asia, South America and Europe. We enjoy a high reputation among our distributors and customers. We have been awarded as one of the best suppliers from fortune 500 clients in the last several years. We also consider supplying products to other markets.
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| Business Type: |
Exporter |
| Areas of Interest: |
1. Machinery & Tools/Machinery
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