Caltrans Standards and Test Methods

Bay Area aggregates are also produced to meet Caltrans specifications and are tested in accordance with various California Test Methods, many of which test for the same characteristics as the ASTM standards referenced above.  Table 1 shows the common test methods used by Caltrans and those required by ASTM C 33 along with typical specification limits.

• Producers:  
•   Hanson
•    CEMEX
•    Syar
•    Vulcan
•    Graniterock
•    West Coast Aggregates
•    Granite Construction