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Construction Time Overruns

出版	Construction Engineering Research Laboratory, 1973
URL	http://books.google.com.hk/books?id=N2OuHAAACAAJ&hl=&source=gbs_api

註釋The actual time required to complete construction on military facilities is often greater than the time contractually specified. There are several reasons for these 'overruns' or time extensions: designer changes/errors, user changes, weather, strikes, late deliveries, etc. These time extensions were studied by examining a sample of contracts throughout CONUS from the time period July 1967 - June 1970. Based on the 221 contracts evaluated it is estimated that for an average contract, an additional 27% of the specified construction time will be allowed as time extensions. (Author).