American Express Open

What is the R-value of normal weight concrete made with limestone aggregate? Is it expressed per inch of concrete thickness? More

When the highway bill (SAFETEA-LU) finally passed last summer, some believed—perhaps naively—the federal government was at last providing sufficient funding for America's highways. That, unfortunately, was not the case. The American Road and Transportation Builders Association's analysis states that “... SAFETEA-LU investment levels will fall short of meeting the highway and transit needs documented in repeated government reports ...” More

A working group of the American Concrete Institute’s (ACI) Committee 131 on Building Information Modeling (BIM) is actively developing an Information Delivery Manual (IDM) for cast-in-place concrete. More