| From wgba.org Case Studies
The Boldt Company LEED-NC Silver The project is a 21,000 square foot office and warehouse building of modest expectations. Yet it demonstrates that with care and commitment to sustainable design, even our most everyday projects can be major contributors to a new generation of better buildings. For its thorough dedication to energy efficiency and sustainability, the jury awarded this project an Award of Merit. A solid year of carefully tracked data shows that exceptional energy efficiency was achieved because the concepts work. Lighting systems are completely integrated with daylighting, and the daylighting is abundant. Equally important are the extensive provisions of other sustainable elements, including the responsible use of materials, good construction process and site management, and an apparent passion for indoor environmental quality.
Statement of Energy Savings and Reduction of Environmental Impacts Computer Simulation DOE2 modeling was used extensively in the development of the design to verify and tune the performance characteristics of the completed facility. The HVAC system was designed to be 40% more efficient than code requires; however, the facility actually consumes 65% less electrical and gas energy than a facility meeting ASHRAE 90.1 1999 or Wisconsin Department of Commerce standards. The code compliant base design was predicted to consume 406,265 KWh (kilowatt hours of electricity), 36,612 therms, and 5,048 MMBtu (million Btu) per year, and the design that was built was predicted to consume 189,809 KWh , 28,291 therms, and 3,477 MMBtu per year. Per the computer simulation it was estimated that 216,456 KWh (53%), 8,321 therms (23%), and 1,571 MMBtu (31%) would be saved per year, an annual average savings of nearly 40%.
The incremental cost increase for a 40% more efficient HVAC system than a code compliant system was $35,500. According to the DOE2 modeling, $54,268 would have been spent per year in utility costs (gas and electricity) if a code compliant HVAC system had been installed. The DOE2 modeling program estimated that operational costs would be $32,625 per year with the high efficiency HVAC system, generating a savings of $21,643 per year. Therefore, the project payback in years (project or incremental cost divided by annual cost savings) was estimated to be 1.64 years. After one year of operation $24,024.06 was actually spent in utility costs (gas and electricity), which saved 65% in utility costs compared to a facility conforming to ASHRAE 90.1 Therefore, actual payback for the HVAC system was 1.17 years.
Further energy savings are realized through the use of Ergo-Lights, which automatically adjust light levels to conserve energy (daylight harvesting) and/or are controlled by the individual employees’ computer. 100% of the employees work in natural daylight and have a view of the exterior environment. The warehouse also utilizes daylight harvesting via Orion 6 tube fluorescent light fixtures, which are 50% more efficient than the metal halide lights typically used in a warehouse facility. Occupancy sensors are used in the office and warehouse to insure lights are turned off when a room is not occupied. 50% of the electrical energy the facility consumes is generated by wind power.
Sustainable characteristics that reduce environmental impacts: · on-site, comprehensive erosion control · storm water management exceeding EPA recommended Best Practices and replenishing the ground water · minimized construction and building footprint to avoid unnecessary soil compaction and preserve future options · exterior lighting without night-sky pollution or neighboring property trespass · use of regionally manufactured building materials · use of a high percentage of recycled content building materials · use of Forest Stewardship Council (FSC) certified wood · use of recyclable building materials · low-maintenance, native species landscaping · highly reflective, Energy-Star rated roofing · shaded pavement · energy conserving lighting with continuous dimming daylight an occupant sensors · low-temperature, in-floor radiant perimeter heating · super-insulated and infiltration sealed building envelope · carbon-dioxide monitoring · HVAC economizer cycle · HVAC heat-recovery · whole-building, digital energy monitoring and control system · pre-and post-occupancy system-wide commissioning · employee PC-control of individual lighting · facilities for alternate transportation · utilizes well water for cooling as well as using the discharged water for irrigation · plumbing fixtures are very low water consumption fixtures and all water lines are insulated. · 100% of rainwater falling on the building and site is retained and filtered on-site. · 75% of all construction waste generated by the project was recycled.
Oscar J. Boldt Construction –
Members of Project Team: Building Owner Tom Boldt The Boldt Company Boldt Phone: 920-225-6101 Fax: 920-739-4748 Design Firm Steve Ford Boldt Technical Services Phone: 920-225-6227 Fax: 920-739-4408 Construction Firm Facility Manager Dave Kievet Oscar J. Boldt Construction Phone: 920-294-3852 Fax: 715-295-3401 Facility Manager Cliff Nitz Building Automation Technologies Inc. Phone: 920-294-3852 Fax: 920-294-3828 Other Parties Contributing Significantly to the Success of the Project: · Dave Geenen, Architect, LEED AP - Boldt Technical Services · Dave Jeffers, PM Mechanical Systems - Boldt Technical Services · Dave Sachs, PM Electrical Systems - Boldt Technical Services · Pete Kuehl, Program Architect - Boldt Technical Services · John Koga, Value Engineer - Boldt Technical Services · Theresa Lehman, VE, LEED AP - Boldt Technical Services · Jim Van Asten, Project Manager - O.J. Boldt Construction · Gordy Ashbeck, Superintendent - O.J. Boldt Construction · John Longberg, HVAC Consultant - Longberg Brandel & Associates · Dave Kohl ,President - Kohl’s Plumbing · David Brawner, Project Manager - Tweet-Garot Mechanical · Dave LeBlanc, Field Electrician - Superior Electric Manufacturer’s Contributing Significantly to the Success of the Project: HVAC · Trane · · Qmark – Marley Electric · Renew Aire · Burnham · Carnes Controls · KMC Controls Lighting · Orion Lighting · Ledalite · Day-Brite Lighting · Precision Architectural Lighting · Gardco Lighting · LC&D Lighting Controls · Leviton Occupancy Sensors · Watt Stoppers Software · Ledalite Pump · Red Jacket Water Heater · Bradford White Air Sensors · AirTest Sustainable Products · Knoll Furniture · EFCO · · Merrill Iron & Steel · · Stone Design © Copyright 2007 by Wisconsin Green Building Alliance |
