Testing and Evaluation of Slip Base Sign Supports

Bligh, Roger P.; Bullard Jr., D. Lance; Menges, Wanda L.; Schoeneman, Sandra K.

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Testing and Evaluation of Slip Base Sign Supports

2001-05-01
By Bligh, Roger P. ; Bullard Jr., D. Lance ; Menges, Wanda L. ; ...

File Language:

English

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Creators:

Bligh, Roger P. ; Bullard Jr., D. Lance ; Menges, Wanda L. ; Schoeneman, Sandra K.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Bolts Breakaway Supports Crash Tests Retrofitting Sign Supports Slip Base Torque
Publication/ Report Number:

FHWA/TX-0011792-5
Resource Type:

Tech Report
Geographical Coverage:

United States ; Texas
Edition:

September 1998 - August 2000
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

Under this project, several issues related to the performance of slip base sign supports were investigated. These issues include: the effect of bolt torque on the impact performance of slip base sign supports, the effect of sign panel size and configuration on the trajectory and impact performance of slip base sign supports, and an evaluation of methods for retrofitting slip base stubs that incorporate a lifting ramp or cone. A summary of the findings and conclusions resulting from these investigations is provided. Small slip-base sign supports with slip bolt torques in the range of 109 N-m (80 ft-lb) to 136 N-m (100 ft-lb) were determined to comply with National Cooperative Highway Research Program Report 350. A triangular-shaped, polycarbonate spacer cap was successfully tested as a retrofit option when repairing or upgrading existing sign supports with foundations that incorporate a lifting device. Test results indicate that slip base sign supports perform acceptably when used with conventional sign panels having an area of 0.84 m2 (9 ft) or greater. A test with a lightweight plastic sign with an area of 0.58 m2 (6.25 ft) was marginally acceptable.
Format:

PDF
Funding:

0-1792
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:4a01b40fb972ecad654121b1f564da83a402d9c7947e7318fdf480369e7fb2b93d9a7b48258cd28d5da4084cf4f5b0586e0896199dacce5b74d78b958ea81b2c
Download URL:

https://rosap.ntl.bts.gov/view/dot/86545/dot_86545_DS1.pdf
File Type:

[PDF - 85.00 MB ]

File Language:

English

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