INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Critical gradient for construction vehicles - guidance

Critical gradient for construction vehicles - guidance

(OP)
Hi,

A project I am working on has a rural local access road which is to be used for construction traffic (large loads on flatbed trucks and low loaders). The road has a short section with a gradient in the region on 15% which is causing much disagreement among the parties involved as to whether the construction vehicles will be able to handle it.

Are there any best practice documents available for temporary / construction site access roads or can anybody share their experience in this regard?

Many thanks.

RE: Critical gradient for construction vehicles - guidance

What if you put the equivalent weight in concrete blocks on a trailer and tried pulling it up the hill? Or simply ask the hauler what he thinks his trucks can do? One practical answer would be better than a lot of theoretical speculation.

I was once asked to cast a dividing vote on whether a 10 foot lane was sufficient for trucks on a bridge on a curve. The designer said that's enough for an 8' 6" truck. The construction manager said more room was needed for off-tracking. I said get some flaggers out there, cone off a lane, and see what happens. A few squashed cones later, we were laying out a truck detour.

How heavy are these loads? What is the pavement thickness and condition? Are you going to use up the road's remaining ESAL capacity with this one project?

RE: Critical gradient for construction vehicles - guidance

Often with grades in excess of 10% I put a transition portion at the bottom and the top, but this is for passenger vehicles. I wouldn't think a truck would have any difficulty.

Dik

RE: Critical gradient for construction vehicles - guidance

(OP)
Thanks all the responses.

We have resolved the issue with an alternative layout.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close