Road Guardrail Design, Timber Post
Road Guardrail Design, Timber Post
(OP)
Where on the internet i can find design standards for road guardrails
I am using 8" x8" timber post spaced 6' on bedrock, how deep should i go for the rock, DO i need concrete foundation or backfill with gravel around the hole, Should i use rock anchors
Thanks in advance
I am using 8" x8" timber post spaced 6' on bedrock, how deep should i go for the rock, DO i need concrete foundation or backfill with gravel around the hole, Should i use rock anchors
Thanks in advance





RE: Road Guardrail Design, Timber Post
- Standardized parts will make repair easier
- Less liability should someone be injured in a crash with the rail
- Predesigned details for posts in rock
I think NYSDOT will drill a hole and backfill around the post with compacted gravel. If the rock is at the surface and sound enough, you might be able to treat it like a retaining wall, with heavy steel bridge rail posts bolted to anchors.Just remember that eventually, you will have to replace posts, due to crash damage or rot.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust
RE: Road Guardrail Design, Timber Post
RE: Road Guardrail Design, Timber Post
http://www
AC - NYSDOT doesn't have any standards for timber railing. A steel-backed timber median was recently used on a NYSDOT project for historic reasons. The design was a modified version of FHWA.
RE: Road Guardrail Design, Timber Post
The original poster was talking about timber posts, and said nothing about the rail elements. NYSDOT does have a wood post version of heavy post blocked out W-beam.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust
RE: Road Guardrail Design, Timber Post
RE: Road Guardrail Design, Timber Post
In my county, we do have some areas where the soil will eat CMP in only ten years or so, but guiderail posts shouldn't be abraded by running water.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust