Illinois DOT Shift to Mid-Span-Splicing: Click HereSee slides 5; 6
QUESTION 2: What research supports the move to W-beam splice connections to mid-splice post placement?
Performance of W-Beam Splices, by Ray, Plaxico and Engstrand:Click Here Documented, controlled study of w-beam splice connection stresses
QUESTION 3: When installing new mid-span splice holes in preexisting guardrail, why are new holes not allowed to be drilled or torched for the new post locations?
The rail will be compromised: Click HereSee Question 10
QUESTION 4: What about the exposed edge?
A Michigan DOT sponsored study compares the corrosion performance of hot dipped galvanized highway safety materials with no uncoated edges V/S galvanized highway guardrail components with exposed edges: