Section 481500 Wind Spire

Section 481500 WIND ENERGY ELECTRICAL POWER GENERATION EQUIPMENT PART 1: 1.01

1.02

1.03

1.04

GENERAL

Description A.

Work shall consist of furnishing and construction of a Windspire Vertical Axis Wind Turbine System (Mariah Power, Inc.) or equal in accordance with these specifications and in reasonably close conformity with the design and dimensions shown on the accompanying plans.

B.

Work includes preparing and construction of foundation, assembly and installation of Windspire including electrical connections as shown on the construction drawings.

Related Sections A.

Section 020000 - Site Preparation

B.

Section 260000 - Electrical

Reference Documents A.

International Electrotechnical Commission (IEC) – Wind Turbines Section 61400

B.

National Electrical Code (NEC) - Sections 690.64(B)(2) and 705.12

Submittals/Certification A.

Contractor shall submit a Manufacturer's certification, prior to start of work, that the vertical axis wind turbine components meet the requirements of this specification.

B.

Contractor shall submit construction drawings and design calculations for the wind turbine system prepared by a Professional Engineer or approved ICC-ES report. The engineering designs, techniques, and material evaluations shall be in accordance with the Manufacturer’s Design Manual, the International Building Code, and ASCE wind and seismic loads.

C.

Contractor shall submit a certificate letter documenting the UL certification of the inverter, generator, and electrical components.

D.

Contractor shall submit documentation that demonstrates the VAWT meets or exceeds the following: 1. Minimum 5 years manufacturer’s warranty 2. Minimum rated annual energy: 2,000 kW*hr for an average wind speed of 12 mph (Rayleigh wind speed distribution) 3. Rated sound level not to exceeding 20 dB above ambient noise level at 50 feet from base 4. Maximum overall dimensions of: [30] [40] [50] feet in height and [4] [6] [8] feet in diameter.

E.

Product data. (LEED Building Information, Optional), submit the following for each type of product provided under work of this Section: 1. Local/Regional Materials:

a.

2.

1.05

1.06

Quality Assurance A.

Wind Energy Systems: 1. Performance: IEC 61400-2 Ed. 1.0: Safety of Small Wind Turbine Systems IEC 61400-2 Ed. 2.0: Design Requirements of Small Wind Turbine Systems IEC 61400-2 Ed. 3.0: Requirements of Small Wind Turbine Systems IEC 61400-11 Ed. 2.0: Acoustic Noise Measurement Techniques

B.

Contractor shall submit a list of five (5) previously constructed projects of similar size and magnitude by the installer where the specific wind turbine system has been constructed successfully. Contact names and telephone numbers shall be listed for each project. A Manufacturers representative may be provided to oversee wind turbine installation in lieu of contractors experience record.

C.

Owner shall/may provide soil testing and quality assurance inspection during earthwork and foundation construction operations. Contractor shall provide any quality control testing or inspection not provided by the Owner. Owner's quality assurance program does not relieve the contractor of responsibility for quality control and wall performance.

Delivery, Storage and Handling A.

Contractor shall check all materials upon delivery to assure that the proper type, grade, color, and certification has been received.

B.

Contractor shall protect all materials from damage due to jobsite conditions and in accordance with manufacturer's recommendations. Damaged materials shall not be incorporated into the work.

PART 2: 2.01

Sourcing location(s): Indicate location of extraction, harvesting, and recovery; indicate distance between extraction, harvesting, and recovery and the project site. b. Manufacturing location(s): Indicate location of manufacturing facility; indicate distance between manufacturing facility and the project site. c. Product Value: Indicate dollar value of product containing local/regional materials; include materials cost only. d. Product Component(s) Value: Where product components are sourced or manufactured in separate locations, provide location information for each component. Indicate the percentage by weight of each component per unit of product. Renewable Energy: a. Submit manufacturer’s product data for system. b. Submit calculations indicating the energy produced by the system relative to the total energy demand for the building. c. Submit Letter of Certification from system provider indicating that energy produced by the system represents minimum [2.5] [5] [10] [50] [xxxx] percent of the total energy demand for the building.

PRODUCTS

Definitions A.

Airfoil – exterior rotor component designed to generate rotational lift. Shall be of aluminum or similar material that resists degradation due to exposure to exterior environment (oxidation, UV, etc.).

B.

Compacted Backfill - compacted soil to 95% compaction (ASTM D1557). To be free of organic silts, organic clays, and/or peat and compacted in 12” maximum lifts.

C.

Reinforced Concrete – a normal weight concrete mix design in accordance ACI 318, consolidated and reinforced with ASTM A615 grade 60 deformed bar.

D.

Rotor – rotating component(s) of the vertical axis wind turbine, includes airfoils, struts, and center pole shaft.

E.

Struts – connect the airfoil to the center pole shaft of the rotor. The struts shall be aluminum or similar material that resists degradation due to exposure to exterior environment (oxidation, UV, etc.).

PART 3: 3.01

3.02

3.03

Excavation A.

Contractor shall excavate to the lines and grades shown on the construction drawings. Owner's representative shall inspect the excavation and approve prior to placement of reinforced concrete.

B.

Over-excavation and replacement of unsuitable foundation soils and replacement with approved compacted fill will be compensated as agreed upon with the Owner.

Reinforced Concrete Foundation A.

Reinforced concrete shall be of material as specified on the construction drawings. The reinforcing shall be installed and set prior to pouring of concrete. Concrete shall be placed to the lines and grades shown on the construction drawings, and shall not vary without approval of engineer. Mechanical vibrating equipment shall be used to consolidate the concrete into the foundation.

B.

Reinforced concrete shall be allowed a minimum of 24 hours to cure, prior to backfill or compaction of adjacent to foundation. Form boards or sonotube forms shall be removed prior to backfill. Backfill adjacent to foundation shall be compacted to a minimum of 95 % Modified Proctor density per ASTM D-1557.

C.

Reinforced foundation shall be allowed to cure for a minimum of 7 days prior to placement and erection of the Vertical Axis Wind Turbine.

Unit Installation A.

3.04

The unit installation shall be in accordance with the manufacturer’s installation procedure manual and local building and electrical codes.

As-built Construction Tolerances A.

3.05

EXECUTION

Installed vertical alignment: ± 0.0625” (1.6 mm) over any 4' (1.219 m) distance.

Field Quality Control A.

Quality Assurance - The Owner shall/may engage inspection and testing services, including independent laboratories, to provide quality assurance and testing services during construction. This does not relieve the Contractor from securing the necessary construction control testing.

B.

3.06

Quality assurance should include foundation soil inspection. Verification of geotechnical design parameters, and verification that the contractor’s quality control testing is adequate as a minimum. Quality assurance shall also include observation of construction for general compliance with design drawings and project specifications. Quality assurance is best performed by the site geotechnical engineer.

SITE ENVIRONMENTAL PROCEDURES A.

Energy Efficiency: Contractor shall verify equipment is properly installed, connected, and adjusted. Contractor shall verify that equipment is operating as specified.

B.

Renewable Energy: The Owner shall verify and keep record of operational data under a wide range of conditions to verify energy delivery as calculated for those conditions.

PART 4:

MEASUREMENT AND PAYMENT

END OF SECTION