Unlisted Sizes: For unlisted sizes, use the man hours of the next larger shown size. Open navigation menu. If pipe is received from factory in flanged 20 foot lengths add 10 percent to pipe handling manhours for handling of additional weight. Gaseous emissions are very low; plants emit far less carbon dioxide than other types of power plants. Estimates for industrial process plants include mechanical process equipment and involve piping, instrumentation, structural and miscellaneous steel, and civil work.
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