Monthly archives: May, 2019

AASHTO T 249-03 (2007) pdf free download

Helical   Lock  Seam  Corrugated  Pipe PROCEDURE 2.1.                           Determine lock seam quality by examining samples of the lock seam cross section sawed from the pipe. See Figure I  for location of sample. See Figure 2 for the cross section of the sample. 2.2.         The manufacturer will saw a triangular sample from the seam at one end …

AASHTO T 248-02 pdf free download

SCOPE 1.1.                         These methods cover the reduction of large samples of aggregate to the appropriate size for testing employing techniques that are intended to minimize variations in measured characteristics between the test samples so selected and the large sample. 1.2.                    The values stated in SI units are to be regarded as the standard. 1.3.         This …