1992 CENSUS OF CONSTRUCTION INDUSTRIES

     GENERAL SUMMARY INFORMATION

     A "construction establishment" is defined as a relatively
     permanent office, or other place of business, where the
     usual business activities related to construction are
     conducted.  A separate census report was required from each
     sampled establishment covering domestic operations. 
     Separate reports were not, however, required for each
     project or construction site.

     For 1987 and earlier censuses, receipts from the sale of
     land were collected separately for general contractors and
     operative builders.  These receipts were included in the
     total dollar value of business done but excluded from the
     value of construction work done.  For 1992, receipts from
     the sale of land were not collected separately but are still
     excluded from the value of construction work done.  All
     dollar values are shown in current dollars for the years
     specified and have not been adjusted for inflation.

     The data in these files are estimated from a sample survey
     and are subject to sampling variability as well as errors of
     response and nonreporting.  The relative standard error
     shown is a measure of sampling variability.  Descriptions of
     the sampling, estimating procedures, and data reliability
     are included in the Methodology File (CC92.MTH).