Rail Gator 3.0 FAQs
What are DOTs &/or Transportation Institutes saying about mid-span-splice post spacing?
Several DOTs, including Texas and Illinois, are advocating for mid-span splice post spacing to enhance safety and durability. Presentations and detailed slides are available that outline the benefits and technical specifications of this approach.
What research supports the move to W-beam splice connections to mid-splice post placement?
The performance of W-beam splices has been thoroughly studied, showing that mid-splice post placement can handle stress more effectively.
Why are new holes not allowed to be drilled or torched for new post locations in existing guardrail?
Drilling or torching new holes in existing guardrails can compromise the structural & corrosion integrity of the rail, leading to safety risks. Proper procedures and guidelines are outlined by DOT’s & AASHTO to maintain the effectiveness and safety of guardrails.
Will Rail Gator 3.0 damage the rail?
No. The precision engineered frame, punch & die provide a clean shear without deforming rail. Additionally, since it’s a cold-punch process, there are no damaging thermal stresses, such as in drilling or torching.
Will Rail Gator 3.0 damage the corrosion resistance of rail, aka ‘exposed edges?’
The short answer is, No. Galvanized guardrail has the ability to ‘self-heal’ scratches and other small areas of exposed edge, such as the edges created when punching new holes. Additionally, AASHTO multiple independent studies have demonstrate that exposed edges due to transverse shearing (punching) do not compromise the structural or corrosion resistant capabilities of the rail.
References
1. AASHTO M-180
“Uncoated edges resulting from transverse shearing or punching of holes will not be considered objectionable.”
2. Michigan DOT, R-1357 “Comparison of Methods Used To Produce Hot-Dipped Galvanized W-Beam Guardrail.”
“There was no difference in guardrail corrosion performance in the salt fog test for the two methods of manufacturing (pre and post galvanization) based on the visual inspection and the nut loosening torque values.”
“Guardrail edges of C-HDG samples, despite being uncoated, corroded at similar rates and to similar severities as edges on the B-HDG samples.”