Mar 16, 2002 #1 kfeng Civil/Environmental Mar 4, 2002 12 I searched the web for one hour and had no luck. Thanks a lot for your input.
Mar 16, 2002 #2 jheidt2543 Civil/Environmental Sep 23, 2001 1,469 kfeng: Your best bet, assuming you are in the U.S., is to check your state's standard highway specifications. They have the various classes of acceptable backfill defined by gradation. Hope this helps. Upvote 0 Downvote
kfeng: Your best bet, assuming you are in the U.S., is to check your state's standard highway specifications. They have the various classes of acceptable backfill defined by gradation. Hope this helps.
