Two new standards from the Geosynthetics committee of ASTM will help define properties that can be used in the design of geosynthetic reinforced pavement. I know in my practice in Arizona, ADOT simply allows a boost of Resilient Modulus (R-Value) of 10 when biaxial geogrids are used. Perhaps in time this will lead to a design method to account for the geosynthetic reinforcement in a more analytical way. [Source: Geosynthetics Magazine]
Standards and Codes
ASTM Updates September 2009
This post contains a summary of geotechnical, materials testing, geosynthetic and related testing standards that were updated by ASTM during the month of September. This month there were not as many updates as the last couple, but a few that caught my eye are a new standard for measuring geosynthetic-soil resilient interface shear stiffness, a revision to the standard practice for laboratories testing concrete and concrete aggregates for use in construction and criteria for laboratory evaluation and a revision to the standard for measuring slump flow of self-consolidating concrete.
Standards and Codes
ASTM Updates September 2010
Last month there were several updates to standards involving texting the flexural strength of concrete as well as updates to some masonry and dimension stone standards. ASTM D6926 – Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus has been updated, so if you are involved in asphalt pavement testing, make sure you go and find out what the changes are. There are also a whole slew of groundwater and site investigation standards that were reapproved.
Press Releases
New ASTM-Code Council Book References Standards in 2009 IBC
July 23, 2009 – Engineers, architects, contractors, code officials and others in the construction industry need access to ASTM standards referenced in the 2009 International Building Code (IBC) to design, construct and regulate safe and reliable buildings. The ASTM Standards: As Referenced in the 2009 International Building Code fulfills this need in one book.
This comprehensive book contains 280 ASTM referenced standards in Chapter 35 of the IBC, including critical topics such as structural steel, concrete, masonry, wood, soil, gypsum, insulation, fire protection, fire prevention, window fall prevention devices, and other important areas that contribute to safe and quality construction. [Editor] Click through for the rest of the press release [/Editor] […]