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Guardrail connection to low fill culverts

Question
State	NE
Description Text	TRP-03-114-02 This research shows the guardrail connection to Low fill culverts. The posts connected to the culvert are half-spaced. The diagram of tested guardrail shows 6 – half-spaced posts prior to and beyond the culvert. Is this half-spacing required for this full distance? Or can we start the half-spacing at the culvert?

Question

State

Description Text

TRP-03-114-02

This research shows the guardrail connection to Low fill
culverts.

The posts connected to the culvert are half-spaced.

The diagram of tested guardrail shows 6 – half-spaced posts
prior to and beyond the culvert.

Is this half-spacing required for this full distance? Or can
we start the half-spacing at the culvert?

System Performance Evaluation

System Types
Road Closure Gates
Thrie Beam Guardrails

Applications

System Features

Date February 14, 2013
Previous Views (27) Favorites (0)

Response
Response (active)	I had a significant amount of discussion on this issue with the Kansas DOT and have been providing feedback on their CAD details. When the KsDOT details are complete, I had planned to send them to the Pooled Fund members for discussion. There is a lot of history on the half-post spacing issue for metric-height rail. The KsDOT details were extended to MGS where half-post spacing is typically used. I have enclosed some of our prior correspondence between MwRSF and KsDOT on the MGS attached to culvert slabs. I also accessed the KsDOT standard details and attached the two most current plans on this matter. Let me know if you have further questions after reviewing the prior email discussion. Thanks!

Response

Response
(active)

I had a significant amount of discussion on this issue with the Kansas DOT and have been providing feedback on their CAD details. When the KsDOT details are complete, I had planned to send them to the Pooled Fund members for discussion. There is a lot of history on the half-post spacing issue for metric-height rail. The KsDOT details were extended to MGS where half-post spacing is typically used.

I have enclosed some of our prior correspondence between MwRSF and KsDOT on the MGS attached to culvert slabs. I also accessed the KsDOT standard details and attached the two most current plans on this matter. Let me know if you have further questions after reviewing the prior email discussion. Thanks!

Date June 4, 2013
Previous Views (27) Favorites (0)

Attachment KSDOT Culvert.zip