Modified G2 Weak Post W-Beam Guardrail

Report Number(s): NCHRP Project 22-14(3), Test No. 476460-1-8

Description: The Modified G2 Weak Post W-Beam guardrail is a 32-inch tall, weak steel post, W-beam barrier with rail splices mid-span between the posts. This barrier was successfully crash tested in accordance with NCHRP Report 350 and is the same barrier referred to in TTI Project Number PF473750-3 as the PennDOT Type 2 guiderail that was modified for that study. The barrier is construction using 12-gauge W-beam guardrails attached to 5 ft – 3 inch long S3 x 5.7 steel posts (PSE03) spaced 12 ft on center. The individual line posts are each fitted with a ¼ inch x 8 inch x 24 inch spil plate (PLS01). Post embedment depth is 30 inches. The W-beam guardrails are attached directly to the post and do not use an offset block. The length of need of the modified G2 barrier test installation was 262 ft – 6 inches. The barrier was terminated with ET Plus guardrail terminals. The total overall test installation length was 325 ft.

Test Level: 3

MASH Test Number: 3-11

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: NCHRP