Construction spending patterns and retail margins

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    IMPLAN Support
    Hello, While the application of Margins is not as straight-forward as your example, since not all items used on a construction site are assumed to be purchased through retail (some are assumed purchased through wholesale and some directly from producers). You have the basic understanding of how retail and wholesale purchases are handled. This [url= http://www.implan.com/index.php?option=com_content&view=article&id=203&Itemid=1797]article[/url] describes the application of the Value Chain in IMPLAN when the specific item being purchased is known, which is the case in the construction spending patterns built into IMPLAN. The article describes how and why to manually set Margins for use with Industry Change Activities when you are modeling a purchase of say gasoline made my residents in your region. However, in your case the same principles apply, but the splitting of the Value Chain is already done in the spending patterns. Please let us know if you have any additional questions.

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