Seacoast Fortifications Preservation Manual Golden Gate National Recreation Area Table of Contents
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Seacoast Fortifications Preservation Manual - GGNRA 1/22/03 2:17 PM Seacoast Fortifications Preservation Manual Golden Gate National Recreation Area Table of Contents This Seacoast Fortifications Preservation Manual addresses the extensive and nationally significant seacoast fortification network in Golden Gate National Recreation Area. Its purpose is to identify specific preservation issues affecting the fortifications; provide technical information about appropriate treatments; and develop a methodology for prioritizing the application of those treatments to the park’s extensive fortification network. Written by a team of five preservation specialists, the manual is organized as sections that discuss the historic significance and preservation rationale for the resource; explain the physical history of the fortifications in order to better understand their evolving nature; and present up-to-date and practical treatment solutions for the many preservation challenges that these fortifications present. More specifically, Part I of the manual offers readers a detailed historic context, a discussion of character-defining features for the fortifications, and a suggested methodology for documenting existing conditions. Each chapter is prepared according to the parameters of the National Register of Historic Places. Part II focuses on the architectural-engineering history directly pertinent to the San Francisco fortifications site preparation (excavation and fill); explicit concrete mixes and issues of reinforcement; surfacing schemes; and historic vegetation at the individual batteries over time as well as a review of historic maintenance methods of the recent past. Part III is the heart of the manual, providing conditions assessments; an analysis of safety and security issues; and, treatment plans for stabilization, preservation and repair, and restoration. Recommended treatments for explicit situations at the San Francisco fortifications, such as "Concrete: Separation," "Metals: Imbedded Hardware," "Moisture Protection: Causes of Deterioration," and "Finishes: Signs and Stenciling," are intended as a reference tool for the National Park Service, with 45 removable, one-page sheets organized in a double-column format accompanied by architect’s original sketches and current photographs illustrating the described problems. The manual includes a detailed glossary of architectural, fortification, and preservation terms, and, an annotated http://www.nps.gov/goga/history/seaforts/ Page 1 of 3 Seacoast Fortifications Preservation Manual - GGNRA 1/22/03 2:17 PM bibliography. Approximately 150 historic and contemporary black and white photographs, architect’s sketches, and historic battery plans illustrate the manual. The seacoast fortifications of Golden Gate National Recreation Area are widely acknowledged to comprise the finest outdoor museum of coast defense structures in the country. They range in age from Fort Point (1861), through Battery Construction No.129 (1944) to Nike Site SF-88L (1954). Construction types include intricate brick casemates, extensive earthworks, massive solid-pour concrete, and reinforced concrete subterranean structures. As a group, these fortifications possess relatively high integrity; represent a unique spectrum of military engineering techniques used by the United States in its seacoast fortifications from the Civil War through the Cold War; and are associated with important historical developments of the nation as an evolving international military power. The former military reservations that provide a relatively unchanged physical context for these fortifications also provide a spectacular backdrop of largely undeveloped open space at the edge of a great urban metropolis. This open space is not only a defining factor in the San Francisco Bay Area’s world-renowned scenic beauty, but has become the core of land around which was established the first of the nation’s urban national park areas. As the military posts containing these fortifications came under the management of the National Park Service, beginning with the establishment of Golden Gate National Recreation Area in 1972, the fortifications were evaluated for significance and integrity and placed on the National Register of Historic Places. Fortifications in the Presidio, at Fort Point, and on Alcatraz Island are National Historic Landmarks. At present, the preparation of a National Landmark nomination is underway for the entire fortification network of Golden Gate National Recreation Area. Even as the National Park Service recognized the need for developing a park-wide treatment program for preserving these valuable resources, its planners, technical personnel and field staff lacked the level of familiarity with the appropriate measures needed to stabilize, conserve, rehabilitate and maintain such a network of massive structures. Seacoast Fortifications is the first step in compiling and disseminating the information needed to preserve these fortifications. The National Park Service intends to follow this collaborative project with a comprehensive preservation maintenance plan for the entire network of the fifty major structures within the park. The manual will then enable park staff to utilize the best contemporary technology to treat the fortifications in a prioritized fashion, while preserving the historic fabric, and characteristics of feeling and setting that qualify the resource as a National Landmark. This project is an excellent example of government working in partnership with the private sector to preserve significant historic resources. An interdisciplinary team consisting of architectural historians, preservation architects and military historians from both the National Park Service and KEA Environmental, Inc. a private sector consultant prepared Seacoast http://www.nps.gov/goga/history/seaforts/ Page 2 of 3 Seacoast Fortifications Preservation Manual - GGNRA 1/22/03 2:17 PM Fortifications, informed by a wider group of preservationists who volunteered their time to participate in a preservation charette that met on-site to address the challenges of preserving these coast defense resources. The manual is based, in part, upon the experiences of the Washington State Parks and Recreation Commission in the planned management of its coast defense resources, and is informed by the thoughtful management standards for coastal lighthouses proposed by the National Maritime Initiative of the National Park Service. Seacoast Fortifications has already received attention outside the region as a model for similar documents planned to address seacoast defense resources on the West, Gulf and East coasts. See Table of Contents http://www.nps.gov/goga/history/seaforts/ Page 3 of 3 Seacoast Fortification Manual - Table of Contents 1/22/03 2:18 PM Seacoast Fortifications Preservation Manual GGNRA San Francisco, CA by: Joe C. Freeman, TABLE OF CONTENTS AIA Stephen A. Haller Acknowledgments David M. Hansen John A. Martini Karen J. Weitze Glossary of Terms National Park List of Acronyms Service & KEA Introduction Environmental Bibliography GGNRA San Francisco, Part I: History and Preservation for Coast Defenses CA Chapter 1: Why Preserve Coast Defenses? July 1999 Significance Reasons to Preserve Links Between the Coast Defenses of San Francisco and the Northwest Properties Addressed in the Maintenance Manual A Preservation Charette Graffiti Vegetation and Habitat Concrete Design and Site Settlement Observations Chapter 2: Historical Context for the Seacoast Fortifications of San Francisco Bay Prelude The Significance of the Seacoast Fortifications of San Francisco Bay The Spanish Colonial and Mexican Era, 1794-1846 Third System Fortifications, 1850-1861 Civil War and Post-Civil War, 1861-1884 Endicott Period, 1891-1928 (including the Taft Era and World War I) World War II Era, 1937-1948 Cold War Era Antiaircraft Defenses, 1952-1974 http://www.nps.gov/goga/history/seaforts/toc.htm Page 1 of 9 Seacoast Fortification Manual - Table of Contents 1/22/03 2:18 PM Concluding Remarks Chapter 3: Character-Defining Features Location and Site Principal Character-Defining Features Change Over Time Construction Materials Principal Character-Defining Features Change Over Time Structure Principal Character-Defining Features Change Over Time Linking Analysis to the Coast Defense Resource Checklist Chapter 4: Standards and Guidelines for the Preservation Process The Existing Management Plan Historic Preservation Guidelines Stewardship Technical Advice Levels of Treatment Rehabilitation Restoration and Reconstruction Preservation Historical Research and Evaluation The Archives and Documentation Conducting the Research Documentation of Existing Conditions Coast Defense Resource Checklist Photographs Photograph Plan Photograph Annotations Historic Photographs Cartographic Resources Feature Mapping Action Log Recommended and Not Recommended: A Summation Part II: Engineering, Design, Construction and Maintenance Issues Chapter 5: Historic Materials and Maintenance Methods Chronology of Structural Events: What was Built When, With What Materials? Post-Civil War, 1865-1876 http://www.nps.gov/goga/history/seaforts/toc.htm Page 2 of 9 Seacoast Fortification Manual - Table of Contents 1/22/03 2:18 PM Endicott and Taft Periods, 1885-1916 World War I — World War II, 1917-1945 The Cold War Selected Highlights Concrete Mixes of the 1890s Surfacing Schemes: Damp-Proof Coatings; Camouflage Paint, Washes, and Tints Site Preparation and Issues of Settlement: Excavations and Fill Landscape: