ANSI uses two words that are not interchangable. The word "should" means the it is a recommendation.The word "shall" means that it is MANDATORY. The people who put together these documents have input from all aspects of the industry. The document that specifically relates to the treecare industry is ANSI Z133.1 , the real issue is that OSHA is the one that deals with complience. It is my understanding that in the US you don't want OSHA on your..... and I not even an American.
