Understanding Pre- and Post-Construction Surveys

Pre-construction surveys allow for the determination of a baseline record of preexisting conditions of properties near sites where vibratory work, including excavating, blasting, and pile driving, is to be done. Per ANSI A10.34-2001, pre-construction surveys are required before work can start for the protection of the contractor and the surrounding property’s owners and tenants. Post-construction surveys damage alleged to have been caused from construction.