I'm sorry, but your question is much too vague / broad to be answered. Perhaps you could give a few more details, explaining exactly what it is you need help with?
i need estimate duct system for a/c and the owner want from me estimate the cost per square feet so i need your help
to estimate the quantites for this dimenstion :
i need estimate duct system for a/c and the owner want from me estimate the cost per square feet so i need your help
to estimate the quantites for sheets and man . hours units required for this dimenstion :
my queation is very easy
i estimated the ductwork by weight but i get in one project
the owner want from me the cost per square feet .
how can i calculate it ????