![]() When they cover common areas, most of the AASHTO standards will be same or similar to their counterparts in ASTM. AASHTO mainly covers material and testing standards for bridge and highway construction. ASTM standards cover metals, paints, plastics, textiles, petroleum, construction, energy, environment, consumer products, medical services and devices, computerized systems, electronics etc. ASTM (American Society for Testing and Materials) is head quartered in the United States with offices in Latin America, Canada, Belgium and China. Not to mention, the specifications developed by each of them are known after their respective organizations. are organisations that develop international standards and are based in or originated in the United States (all of them have America in their full name).
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