ASTHO code :

AASTO stands for American Association of State Highway and Transportation Officials. AASTO code is a set of standards developed by this organization that covers various aspects of highway and transportation engineering. These standards are used by transportation departments in the United States to design and construct highways, bridges, and related infrastructure.


The AASTO code covers a wide range of topics, including design specifications for pavement, bridges, and other structures; construction and maintenance practices; materials specifications; and safety guidelines. These standards are regularly updated to incorporate the latest advances in engineering practices and technologies.


In summary, AASTO code is a set of engineering standards and guidelines that are widely used in the United States for the design and construction of transport.


                     ASTM code:


ASTM code refers to a standard code or specification developed and published by the American Society for Testing and Materials (ASTM). ASTM is a globally recognized organization that develops and publishes technical standards for a wide range of materials, products, systems, and services.


ASTM codes cover a variety of industries such as construction, petroleum, textiles, plastics, and many others. These codes provide guidelines and requirements for testing, evaluating, and specifying materials and products.


ASTM codes typically consist of a letter followed by a number, and they are used to identify specific standards. For example, ASTM A36 is a standard specification for carbon structural steel, while ASTM D4236 is a standard practice for labeling art materials for chronic health hazards.


ASTM codes are widely used in industry, government, and academia to ensure product quality, safety, and performance