GMS Guardrail: 31″ Median W-Beam, 18-3/4″ Post Spacing

Designator SGM27d
System Type Median Barrier (M)
Test Specification AASHTO MASH 2016
Test Level TL-3
Rail Type W-Beam
Deflection Category Semi-Rig
Dynamic Deflection 36" [914mm] < DD ≤ 60" [1524mm]
Working Width Unknown
Aesthetic No
Width W ≤ 12" [305mm]
Height 30" [762mm] < H ≤ 33" [838mm]
Manufacturer Gregory Highway
Drawing Status In Review
Contact Gregory Highway
FHWA Eligibility Letter B-150A.pdf
Components
Drawings SGM27a-d_draft20111109.pdf
Other Docs B-150.pdf
B-150A.pdf
B-150B.pdf
B-150C.pdf
Archive
External Links