Idot subgrade stability manual

The BDE Special Provision for Aggregate Subgrade Improvement states the material shall be crushed gravel, crushed stone, or crushed concrete. Crushed CA-6 gravel would be acceptable. IDOT Subgrade Stability Manual states for the "removal and replacement with granular material" method that the aggregate layer must have a minimum IBV of 15 (page 16). design curve presented in Figure A-2 of the Illinois Department of Transportation (IDOT) Subgrade Stability Manual (SSM). Phase II of the research study documented in this report had an overall objective of validating the laboratory test results reported in the Phase I. Highway Subgrade Design Manual (Moulton, ). The Illinois Department of Transportation (IDOT) published guidance for determining an appropriate subgrade in its Subgrade Stability Manual (IDOT, ). For constructability, IDOT requires a subgrade to have a .

www.doorway.ru is a platform for academics to share research papers. The goal has been to develop aggregate thickness correlations with aggregate properties to modify and improve the thickness requirement curve in the Illinois Department of Transportation's (IDOT's) Subgrade Stability Manual based on both laboratory and field performances. Second, update IDOT's Subgrade Stability Manual to include property requirements for geogrids, geotextiles, and geocells suitable for subgrade restraint applications. Third, establish proper standards on stabilization, separation, and pumping resistance for geotextiles by incorporating recent research findings on geotextile clogging and.

year for aggregates in improved subgrade (working platform) applications. For the standard design and the special treatment of unstable subgrades, IDOT has been referencing aggregate layer thickness recommendations in the Department’s Subgrade Stability Manual for over 20 years. Anecdotal evidence from years of experience. • IDOT Subgrade Stability Manual • Illinois Tollway Design Section Engineer’s Manual • Illinois Tollway Structure Design Manual • Illinois Tollway Supplemental Specifications to IDOT Standard Specifications This Manual does not address sampling or testing requirements of hazardous or special waste materials. Illinois Modified AASHTO T , T , T , T , and T have been incorporated into the December 1, , Manual of Test Procedures for Materials Forms Clicking a hot link below will take you directly to the form listed in the title.