Subgrade Support Characteristics Subgrade Support Characteristics. Experimental and Theoretical. Progress Report No. 1. This book, "Subgrade Support Characteristics", by R.L. Anderson, is a replication of a book originally published before 1956. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.