×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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.

Students Click Here

Highway Design - Shy line Offset - Roadside Barriers

Highway Design - Shy line Offset - Roadside Barriers

Highway Design - Shy line Offset - Roadside Barriers

(OP)
Table 3.1.6.4 of the 1999 TAC Geometric Design Guide provides values for "shy line offsets". In the text regarding this table the TAC Guide states that "Roadside barriers should be placed beyond the shy line offset ..."

The problem I have is with a proposed guide rail installation on the left side (median side) of a divided highway. The typical cross section for this roadway shows a 1.5 m shoulder on the median side. Should having the face of the guide rail offset 1.5 m from the edge of the left lane be a concern when Table 3.1.6.4 gives a value of 3.2 metres?

The reason I ask is that the shoulder widths shown for various typical cross sections in the TAC guide also appear to conflict with the Table 3.1.6.4. Am I missing something or misunderstanding the use of table 3.1.6.4?

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! Already a Member? Login



News


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