![](/images/byd/78.jpg)
![](/images/byd/161.jpg)
![](/images/byd/274.jpg)
![](/images/byd/66.jpg)
![](/images/byd/224.jpg)
![](/images/byd/248.jpg)
![](/images/byd/40.jpg)
![](/images/byd/125.jpg)
![](/images/byd/258.jpg)
![](/images/byd/112.jpg)
![](/images/byd/187.jpg)
![](/images/byd/256.jpg)
![](/images/byd/55.jpg)
![](/images/byd/170.jpg)
![](/images/byd/242.jpg)
![](/images/byd/86.jpg)
![](/images/byd/184.jpg)
![](/images/byd/264.jpg)
![](/images/byd/96.jpg)
![](/images/byd/161.jpg)
![](/images/byd/322.jpg)
![](/images/byd/2.jpg)
![](/images/byd/169.jpg)
![](/images/byd/318.jpg)
![](/images/byd/8.jpg)
![](/images/byd/183.jpg)
![](/images/byd/341.jpg)
![](/images/byd/25.jpg)
![](/images/byd/207.jpg)
![](/images/byd/257.jpg)
![](/images/byd/82.jpg)
![](/images/byd/198.jpg)
![](/images/byd/298.jpg)
![](/images/byd/37.jpg)
![](/images/byd/128.jpg)
![](/images/byd/358.jpg)
![](/images/byd/25.jpg)
![](/images/byd/155.jpg)
![](/images/byd/290.jpg)
![](/images/byd/96.jpg)
![](/images/byd/226.jpg)
![](/images/byd/346.jpg)
![](/images/byd/4.jpg)
![](/images/byd/157.jpg)
![](/images/byd/288.jpg)
![](/images/byd/90.jpg)
![](/images/byd/132.jpg)
![](/images/byd/272.jpg)
![](/images/byd/44.jpg)
![](/images/byd/200.jpg)
![](/images/byd/339.jpg)
![](/images/byd/20.jpg)
![](/images/byd/196.jpg)
![](/images/byd/331.jpg)
![](/images/byd/63.jpg)
![](/images/byd/168.jpg)
![](/images/byd/263.jpg)
![](/images/byd/113.jpg)
![](/images/byd/229.jpg)
![](/images/byd/316.jpg)
![](/images/byd/80.jpg)
![](/images/byd/124.jpg)
![](/images/byd/241.jpg)
![](/images/byd/44.jpg)
![](/images/byd/234.jpg)
![](/images/byd/343.jpg)
![](/images/byd/78.jpg)
![](/images/byd/211.jpg)
![](/images/byd/252.jpg)
![](/images/byd/38.jpg)
![](/images/byd/199.jpg)
![](/images/byd/351.jpg)
AASHTO Materials Standards, 41st Edition, 2021
ABOUT AASHTO DESIGNATION NUMBERS Anatomy of a Designation Number Components Standard Types Standard types are represented by a one-letter abbreviation for full standards. The letter "P" is added for provisional standards. The standard type abbreviations are as follows: • M (Materials, full) • T (Test, full) • R (PRactice, full)
![](/image/whatsappp.png)
![](/images/byd/107.jpg)
![](/images/byd/162.jpg)
![](/images/byd/312.jpg)
![](/images/byd/76.jpg)
![](/images/byd/199.jpg)
![](/images/byd/270.jpg)
![](/images/byd/113.jpg)
![](/images/byd/198.jpg)
![](/images/byd/305.jpg)
![](/images/byd/10.jpg)
![](/images/byd/163.jpg)
![](/images/byd/304.jpg)
![](/images/byd/103.jpg)
![](/images/byd/202.jpg)
![](/images/byd/349.jpg)