|1. Report No.
|2. Government Accession No.||3. Recipient's Catalog No.|
|4. Title and Subtitle
Context Sensitive Rock Slope Design Solutions
|5. Report Date
|6. Performing Organization Code
Richard D. Andrew, Ryan Bartingale and Howard Hume
|8. Performing Organization Report No.|
|9. Performing Organization Name and Address
Yeh and Associates, Inc.
5700 E. Evans Ave.
Denver, CO 80222
|10. Work Unit No. (TRAIS)|
|11. Contract or Grant No.
|12. Sponsoring Agency Name and Address
Federal Highway Administration
Central Federal Lands Highway Division
12300 W. Dakota Ave., Suite 210B
Lakewood, CO 80228
|13. Type of Report and Period Covered
June 2008 - December 2010
|14. Sponsoring Agency Code
|15. Supplementary Notes
COTR: Amit Armstrong, Ph. D., P.E.
COTR: Khamis Haramy, FHWA-CFLHD. Advisory Panel Members: Khamis Haramy, Mathew DeMarco, and Roger Surdahl, FHWA-CFLHD; Khalid Mohamed, FHWA-EFLHD; Rich Barrows, FHWA-WFLHD; Scott Anderson and Barry Siel, FHWA-RC; Matt Greer, FHWA-CO; and Ty Ortiz, CDOT. This project was funded under the FHWA Federal Lands Highway Coordinated Technology Implementation Program (CTIP).
The Federal Highway Administration (FHWA) Federal Lands Highway Division (FLHD) evaluated the application of context sensitive solutions (CSS) for rock slope design. The application of context sensitive design in transportation is a method of developing facilities that fit within the engineered setting and preserve scenic, aesthetic, historic, and environmental resources while maintaining safety and mobility.
Proper development of context sensitive solutions starts before the scoping stage and incorporates a number of factors, including community concerns, the effects of roadway development on the physical character of the surrounding area, and a visual prioritization of design considerations. Before starting construction, the contractor and land management agency should agree on a defined standard of performance and communication protocols to ensure that all project goals are attained.
The aesthetics of common rock slope construction and mitigation practices can be enhanced with some modifications. Advantages, limitations, design guidelines, aesthetic value, construction materials, case examples, relative costs, and maintenance procedures are included for each method. Discussions are intended to guide the reader in CSS rock slope development.
|17. Key Words
CONTEXT SENSITIVE SOLUTION, CSS, ROCK SLOPES, ROCK EXCAVATION, AESTHETIC ROCK SLOPE, SLOPE STABILIZATION, ROCKFALL PROTECTION.
|18. Distribution Statement
No restriction. This document is available to the public from the sponsoring agency at the website http://www.cflhd.gov.
|19. Security Classif. (of this report)
|20. Security Classif. (of this page)
|21. No. of Pages
Form DOT F 1700.7 (8-72)
Reproduction of completed page authorized
We are grateful for the contributions and cooperation of the Central Federal Lands Highway Division (CFLHD) advisory panel (Khamis Haramy, Mathew DeMarco, Roger Surdahl, Khalid Mohamed, Rich Barrows, Scott Anderson, Barry Siel, Matt Greer, and Ty Ortiz). Specifically, Khamis Haramy's efforts and contributions in the role of CFLHD's Contracting Officer's Technical Representative (COTR) are greatly appreciated. Finally, we extend our thanks to Martha Connors who performed the detailed editing of this document.