scope:

INTRODUCTION: This Thirtieth Edition of Transportation Materials is published in two parts. Part 1 contains specifications for materials, and Part 2 includes methods of testing and specifications for testing equipment. Part 2 contains 215 test methods and equipment standards, of which most contain both U.S. Customary and Metric units of measure. Since the Twenty-Ninth Edition, technical revisions were made in 44 of the standards, 22 standards were reconfirmed, 1 standard was updated, 2 new standards were added, 2 standards were discontinued, and 5 standards were deleted. A number of specifications were included in this publication at the request of the AASHTO Subcommittee on Bridges and Structures.