STANDARD FORM OF SPECIFICATIONS FOR CERTAIN COMMERCIAL GRADES OF BROKEN STONE.. The broken stone shall consist of one product of the opera-tion of a stone-crushing and screening plant wi
AMERICAN SOCIETY FOR TESTING MATERIALS PHILADELPHIA, PA., U S A ~FILIATED WITH THE !NTERNAT:::ONAL AssociATION FOR TEsTING MATEJUAU! STANDARD FORM OF SPECIFICATIONS FOR CERTAIN COMMERCIAL GRADES OF BROKEN STONE Serial Designation: D 35 - 18 This form of specifications is issued ttnder the fixed designation D 35; the final number indicates the year of original adoption as standard, or in the case of revision, the year of bst revision ' PROPOSED AS TE:-!TATIVE, 1916; ADOPTED, 1918 The broken stone shall consist of one product of the opera- tion of a stone-crushing and screening plant without recom- bining or mixing, and shall conform to the following mechanical analysis using laboratory screens: Passing screen having smallest boles selected From to per cent Passing screen having next to largest holes selected From to " Passing screen having largest holes selected From to Total passing screen having largest boles sel~cted 100 Example.-The broken stone shall consist of one product of the operation of a stone-cmshing and screening plant without recombining or mixing, and shall conform to the following mechanical analysis using laboratory screens: Passing 1-in screen ; 3 to 10 per cent Passing l-in screen and retained on !-in screen 80 to 95 " Passing 11 in screen and retained on l-in screen ,.,, 2 to 10 Total passing f~-in screen 100 " or the analysis may be expressed as follows: Total passing 1-in screen 3 to 10 per cent Total passing l-in " .• 90 to 98 " Total passing 1!-in " •• 100 (668)