Statement_of_Work.pdf

STATEMENT OF WORK

HM 69 – LAUNCH AREA MISSILE SHELTER BUILDINGS A, B & C

REHABILITATION OF ROLLING HANGER DOORS, METAL “A” FRAME

STRUCTURAL SUPPORTS AND METAL HOOD

Purpose of Work

The metal “A” frame suspension systems, hanger doors, and related components at the three (3) Missile Shelter Buildings require rehabilitation due to harsh environmental conditions, age-related wear, and deferred maintenance. The project involves replacing in-kind, the steel pipe and X brace suspension systems, metal hood covers, and refinishing/repainting the rolling hanger doors of all three (3) Missile Shelter Buildings. The work will be guided by the HM-69 Nike Missile Site Historic Structural Report (HSR) and the original U.S. Army “As-Built” construction documents, circa 1964. Special attention will be given to the exterior steel “A” frames that support the steel “I” Beam track of all three Missile Shelter Buildings.

The work will commence at Missile Shelter Building C, followed by the other two buildings.

Project Background

Nike Missile Site HM-69 is listed in the National Register of Historic Places as a nationally significant example of a Cold War-era military defense site. In particular, the site is notable as one of a series of facilities developed in south Florida following the Cuban Missile Crisis of 1962. The buildings and structures of the site are divided into two areas: the Control Area, which housed facilities for the personnel of the site, and the Launch Area, which included facilities for the assembly, storage, maintenance, and potential launching of the missiles. The materials and forms of the building, berms, other structures, and small-scale features are utilitarian responses to the defensive purpose of the site, the need to secure the site, and the safe handling of the weapons housed at the site. Although some original structures were removed in the 1980s after NPS acquired the site, the remaining buildings clearly portray the history and significance of the site.

The US Army constructed the Nike Hercules Missile Base within Everglades National Park in 1965. The complex, which consists of the Control Area and Launch Area are listed on the National Register of Historic Places under Criteria A & C and are an example of a Cold War-Era military facility in south Florida. Since the period of significance for the district is defined as 1964 through 1979, the site was nominated under criteria consideration G, properties less than 50 years in age. As such, treatments undertaken for this project will follow the Secretary of the Interior's Standards for the Treatment of Historic Properties (36 CFR Part 68, 1995).

The contractor will begin the rehabilitation by first conducting an examination and assessment of the “A” Frame suspension systems, metal rolling doors, metal hood cover and related components. This assessment, along with the HM-69 Nike Missile Site HSR and the HM-69 Nike Missile Site original design/construction documents, photographs etc. will aid in the identification of environmental hazards (lead, asbestos, etc.), and current conditions that may impact project costs and timelines.

Once the National Park Service (NPS) reviews, evaluates, and approves the contractor's recommended approach, the contractor will develop the necessary planning, documentation, and execution to carry out the NPS-approved in-kind replacement of the "A" Frame suspension system, metal hood cover, and the refinishing/repainting of the metal rolling doors of all three missile shelter buildings, beginning with Missile Shelter Building C. The contractor will also provide photographic documentation before, during, and after the rehabilitation activities.

The contractor should be familiar with and have the experience necessary to complete the work in accordance with the Secretary of the Interior’s Standards for the Treatment of Historic Properties (https://www.nps.gov/tps/standards.htm).

Please refer to photographs at the end of this document.

Photographs of Missile Shelter Building C

Photo 1. Overall view of main elevation (NW) of Missile Shelter Building C (Barn).

https://www.nps.gov/tps/standards.htm

Photo 2. Detail view of 12 GA. Metal Hood covering “I” Beam track and 3.5” piping support members w/ “X” bracing.

Photo 3. Detail view of “X” Bracing connection to 3.5 pipe anchored to concrete footing.

Photo 4. Partial front view of top portion of “A” Frame suspension system with “X” Bracing.

Photo 5. Overall rear view of “A” Frame Steel Pipe Suspension Structure w/ “X” bracing. Note the Hanger Door’s structural steel channel frame and metal cladding.