Attachment_1_-_SOW_-_24_July_2014.pdf

STATEMENT OF WORK (SOW)

FOR CONSTRUCTION

FTFA 13-3005

CONSTRUCT VARIABLE HEIGHT TOWER

24 July 2014

1. STATEMENT OF WORK: The Contractor shall perform all construction services for subject project, located at site C-86 Eglin Air Force Base, Florida. The intent of this project is to construct a variable height tower as per the drawings, specifications, and contract documents.

2. PROJECT DESCRIPTION: The contractor shall furnish all parts, labor, tools, materials, plant, and transportation necessary to perform work required in this contract. Work under this contract consists performing all operations necessary to construct a variable height tower with a variable laboratory building to include but not limited to architectural and structural components, mechanical system components, electrical and communications components, finishes, lighting communications, associated hardware and the installation of such components as shown on the construction documents to provide a complete and usable product. Work shall be performed in accordance with the requirements and regulations set forth in the plans, specification, and the contract documents.

The Variable Height Tower at Site C-86, Eglin AFB, Florida is an enclosed 13’ wide x 30’ long x 10’ high laboratory with roof-top observation area that will vary in height above grade, being elevated between 2 open-air/steel-framed gantry-towers, stopping at 5’ floor increments from ground level to 90’ above ground level, aligning with landing-heights on the egress-stair gantry-tower. The gantry-tower on the opposite end of the laboratory from the egress-stair serves as a utility-core and lateral-stability for the laboratory. Laboratory platform stability and vibration-dampening is critical for the success of the testing that will be conducted within. The laboratory will be lifted by (4) devices, one at each corner of the laboratory, by longitudinal beams at it’s roof level.

The 30’x13’ enclosed laboratory finishes and gantry towers will be industrial in nature.

The laboratory roof will be a liquid-applied, traffic-membrane applied to a coverboard on tapered rigid insulation on metal deck on steel beams. Walls will be metal stud with metal exterior wall panels over a vapor barrier membrane. The metal stud cavity will be provided with batt insulation, and the interior face of the walls will be covered with a metal liner panel. The goal is to provide a durable yet lightweight assembly. The laboratory floor will be static-dissipative rubber tile on concrete on metal deck on steel beams. Laboratory ceiling will be exposed structure. All interior laboratory surfaces will be provided with a matte black finish. Aluminum HC (Heavy Commercial) single-hung windows will be provided for clear-openings required for execution of the planned operations for this facility. Aluminum insulated doors will be provided. All handrail systems on the laboratory will be aluminum. For long-term durability and maintenance, all steel on the egress and utility towers will be unpainted/hot-dip galvanized.

Fire and Life Safety: The objective of this project is to construct a variable height tower at range C-86 on Eglin Air Force Base, Florida. The tower will be used to conduct various optic-experiments at the range. The moving laboratory platform will hold both personnel and equipment. Occupants will consist solely of trained persons involved with the execution of the programmed experiments. The highest point for the tower shall need exceed 99 feet. The laboratory platform will be able to be fully raised or lowered within 15 minutes (maximum). The movable platform will be 30 feet long x 13 feet wide with a clear interior height of 8 feet. It will have two levels. The lower level will be fully enclosed and environmentally controlled. The upper level will be an open-air observation deck that will not be fully enclosed.

3. GENERAL APPROACH: This tower is a unique structure not directly addressed by the Building Code (IBC) and Life Safety Code (LSC) (NFPA 101). Both of these codes do address towers for various purposes; however, the exact use of this tower does not fall squarely into the categories described by the building and LSC.

Means of Egress NFPA 101 Section 11.3.2.4.1 permits a single means of egress for the laboratory.

Fire Suppression Systems Fire Extinguishers should be provided within the movable platform in accordance with NFPA 10. The extinguishers should be ABC dry chemical type.NFPA 101 does not require fire sprinkler systems for this type of tower structure. Specifically, section

11.3.1.3.2 indicates that sprinklers are not required since there are no levels below the observation level to be occupied. If the facility is considered non-mission essential then UFC 3-600-01 section 4-2.2 would not require fire suppression systems.

Civil: The project's site shall be cleared of trees and brush and graded for positive drainage away from the structure. Access to the site will be provided by means of a new concrete sidewalk for pedestrian use and a concrete driveway capable of accommodating safety vehicles. All disturbed areas of the site shall be stabilized with sod.

Structural:

Laboratory The 30’x13’ laboratory building is steel framed. It is supported at the roof level by the two edge beams running in the 30 ft. dimension. These edge beams cantilever beyond the walls of the laboratory. The lifting mechanism engages those cantilevered beams and lifts the laboratory. The roof of the laboratory is framed with structural steel beams running in the 13’ direction, supporting metal roof deck. The floor of the laboratory is hung from the perimeter roof beams by tubular columns that support a perimeter edge beam. The floor is framed with composite steel beams supporting a composite metal deck and concrete slab. Composite concrete construction was chosen for stiffness since vibration due to walking in the laboratory is a concern. The lateral load resistance of the laboratory itself is provided by diagonal bracing in the walls between some of the tube columns. The Laboratory will be guided by 4 rails attached to the Towers. Wheels are fixed to the laboratory building, located in the 4 corners of the laboratory building at the roof and floor levels.

Towers Open-air towers are provided on each side of the laboratory to provide lateral stability to the laboratory while it is in elevated position, to brace the tops of the lifting posts, and to support the stairs. The tower stair floors will be 5/16” galvanized checkered plate. The towers are framed with wide flange columns and double angle bracing. The towers have been designed with the stiffness criteria required by the Scope of Work, specifically to deflect no more than 100 microradians in a 5 mph wind. Beyond that the towers will resist 150 mph wind loads, which is the requirement of the applicable building codes, ASCE 7-10. Although not a requirement, the laboratory may be at full height during the 150 mph. That strength is a byproduct of its stiffness.

Foundations Foundations consist of two large mat foundations proportioned to resist the overturning moments of the tower and to limit soil bearing pressures to within the allowable pressures dictated by the geotechnical report.

Mechanical: The HVAC system consists of a packaged 5 ton rooftop heat pump with exposed ductwork routed inside the lab.

Electrical: New primary distribution shall be extended from an existing loop fed transformer to a new pad mount transformer located adjacent to the tower. The transformer shall feed a new main distribution panel. The panel will feed the new lab, tower, and hydraulic system. New fiber and copper cable shall be installed from the adjacent buildings communication room to a new communications cabinet adjacent to the tower. A new fire alarm system with transceiver shall be installed in the lab.

Elevation Control: An electro-hydraulic pinion/rack and drive system will be provided to enable the vertical operation of the laboratory. This system has been designed to manage a maximum total weight of sixty five (65) US tons distributed over the four corners of the platform. Maximum ascent and decent speeds will infinitely variable from two (2) to eighteen (18) ft/min with programmable stopping locations aligning with the egress stair tower landings along the 90 feet (90) maximum travel or lift. The electro hydraulic drive and control will be managed with a programmable logic controller and co-safety supervisory processor which will also provide four-corner synchronization.

During ascent/descent at maximum speeds, it is presently estimated the control will provide the actual laboratory leveling tolerances, at maximum speeds, to be within .125” from side to side and front to back. Programmable stopping accuracies per the aforementioned stopping locations are estimated to be within the same i.e. .125”.

The system will have three layers of safety supervisory controls, those being direct mechanical to the rack, continuous active hydraulic counter balance, and supervisory hydraulic locking, all corporately integrated to insure no unintended motion. All acceleration and decelerations to/from the programmed ascent and descent speeds will be selectable at a main control console. In addition to all pertinent drive and control parameters being selectable, there will be a fault-diagnostic system that will aid in helping troubleshoot and repair in the event of a system malfunction or failure. Due to the fact that there will be people in the laboratory during movement of same and code compliance is yet to be determined, a Failure Mode Effects Analysis (FMEA) will be done to identify and verify failure modes and their risk to operating personnel including incorporation of design changes to mitigate the effects of the findings.

4. It will be the contractor’s responsibility to ensure the product meets all applicable current codes, regulations, guidelines, manuals, acts, laws, and standard including but not limited to Eglin AFB Base Architectural Standards, Eglin Wire and Communications Specifications and Standards, Florida Building Codes, International Building Code, UFC’s, and DOD directions and guidance, including latest approved NFPA, ADA, fire protection, life safety, etc. (Listed references are not all inclusive.) In case of a conflict between the different Air Force standards or other any information herein this document, the more stringent requirement criteria shall apply and take precedence.

5. Provide (8) hardcopy sets, and one (1) Mylar set of As-Built drawings upon completion of the construction of the project. As builts are also to be provided in .pdf format and .dwg format (AutoCAD). Electronic Design Deliverables are to comply with UFC 1- 300-10, Electronic Design Deliverables (EDD) Manual of Policies and Procedures. All drawings are to be furnished in Autodesk, AutoCAD, Minimum Release 2011 .dwg electronic files. Files from previous version releases are not authorized to be incorporated or utilized in creation of any new drawings for this project.

6. Satisfy Florida DEP storm water requirements and provide FL DEP closeouts for this project, if necessary.

7. Submittals, to be discussed at the preconstruction meeting include, but may not be limited to: Material Submittals, Work permits, Utility Outage Requests, Utility Connection Requests, Welding Permits, and Burning permits.

i. The contractor is responsible for marking and verifying all utilities not marked.

8. COMPLETION DATE: All construction work under this contract shall be completed within 270 calendar days after Notice to Proceed is issued.

END OF STATEMENT OF WORK