This PRESERVATION TECH NOTE was prepared by the National Park Service. Charles E. Fisher, Heritage Preservation Services, National Park Service, serves as the Technical Editor of the PRESERVATION TECH NOTES. Special thanks go to Deborah Slaton and Michael J. Scheffler, P.E., of Wiss, Janney, Elstner Associates, Inc., Sharon Park, Kay Weeks and Michael Auer of the National Park Service's Heritage Preservation Services, and Marie Ennis of Einhorn Yaffee Prescott for their review and comments.
Thanks also go to Denis McMullan, McMullan and Associates; Richard Ortega, PE, Ortega Consulting; Dorothy Richter, Hager-Richter Geoscience, Inc.; George Siekkinen and Gregory Mixon, National Trust for Historic Preservation; Suzanne Pentz, Keast & Hood Co.; Mark Richards, Moretrench American Corporation; Dr. Edward J. Cording, Department of Civil and Environmental Engineering, University of Illinois; Mark Gaudschaal, Schnabel Foundation Co.; William Stivale; Robert M. Powers, Powers and Associates; Martin P. Azola, Azola and Associates; and Margaret Gardiner and Mary Knapp at Merchant's House Museum, for their assistance. Camille Martone and Tim Buehner provided initial research for this publication.
Kay D. Weeks serves as coordinator and designer for the PTN Online series.
PTN-42
July 2001
PRESERVATION TECH NOTES are designed to provide practical information on traditional and innovative techniques for successfully maintaining and preserving cultural resources. All techniques and practices described herein conform to established National Park Service policies, procedures and standards. This Tech Note was prepared pursuant to the National Historic Preservation Act, as amended, which direct the Secretary of the Interior to develop and make available to government agencies and individuals information concerning professional methods and techniques for the preservation of historic properties.
Comments on the usefulness of this information are welcomed and should be sent to Chuck Fisher at the Questions/Answsers e-mail address below. To request a copy of the printed PTN 42, Protecting a Historic Structure During Adjacent Construction go to: http://www.cr.nps.gov/freepubs.htm
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