Modular Building Institute Publishes White Paper on Modular Building and LEED Version 3.0

12/14/2009 |

Modular Building Institute Publishes White Paper on Modular Building and LEED Version 3.0


The Modular Building Institute (MBI) has commissioned a report that provides the overview of how the commercial modular construction industry’s current practices can benefit from an awareness of the USGBC’s LEED Building Rating System.

The report covers LEED for New Construction and Major Renovations, applied to commercial construction, and LEED for Schools. It is a best attempt to align the modular building industry with the prerequisite and credit requirements embedded in LEED Version 3.0 2009.

The report, compiled by Robert Kobet, AIA, highlights areas where modular construction processes in particular have an advantage over site-build construction for LEED ratings, and includes several conclusions concerning modular construction and sustainability as it relates to the LEED prerequisite and credit categories, as well as the new category for LEED 2009, Regional Priority.

The findings include:

  • Sustainable Sites: Proper siting or placement of modular units can contribute to improved daylighting, natural ventilation, better storm water management, more efficient site lighting, and a host of other sustainable design and development improvements that contribute to a more energy-, material-, and resource-efficient project. This category also rewards construction techniques that limit site disturbance and keep disturbed areas to within the areas immediately adjacent to the building footprint.
  • Water Efficiency:Water conservation and the LEED water efficiency credits are gaining in priority and application as the awareness of the importance of water and, in some cases, growing shortages emerge. Water conservation is one of the hallmarks of high performance green buildings and one area where modular construction can enjoy the same benefits as conventional construction.
  • Energy and Atmosphere:Increasing energy costs and growing concern about energy availability and security are sure to keep the interest in energy conservation and renewable or alternative energy sources in the forefront of the high performance green building movement. Modular construction has a number of potential advantages – it uses structural insulated panels (SIPS) that can produce relatively high R-values, steel and aluminum stud frame construction that can produce energy-efficient units, and high-performance windows that contribute to the pursuit of high-performance building envelopes.
  • Materials and Resources:Modular construction by nature is material and resource efficient. One of the great economies of modular construction is the ability to assemble repetitive units in controlled conditions. Another is to minimize material waste associated with conventional construction due to weather intrusion and construction site theft. Whole modular units — largely finished prior to arriving at the construction site — can significantly limit construction waste generated at the site and contribute directly to construction site waste management.
  • Indoor Environmental Quality: Superior indoor environmental quality (IEQ) is one of the most desirable and important attributes of high performance. At this time, the modular industry can provide both environmentally conscious buildings and eco-friendly building materials because it has control over both. This is evidenced by the creative and inspirational responses produced by manufacturers who have participated in green building design challenges.
  • Innovation and Design Process and LEED:Perhaps the best feature of the LEED building rating system is the invitation to be innovative. Modular construction capitalizes on the ability to move product in controlled manufacturing conditions, tight inventory control, and project schedules. It is inherently waste conscious and can have minimum site impact if delivered carefully and strategically with respect to site constraints. Modular units purchased within 500 miles of the construction site offer other LEED point opportunities.
  • Regional Priority: The Regional Priority Credits category is new to LEED 2009. The Regional Bonus Credit Category contains four possible Regional Specific Environmental Priority credits. A database of the credits is available on the USGBC Web site, It’s recognized that modular building components and finished modular building units can be a part of any LEED design and construction effort, and as such, regional priority credits can also be obtained. 

The evolution of LEED is a reflection of the changing market forces. There is every opportunity for the modular building industry to identify with and achieve the value added in energy-, material-, and resource-efficient qualities and attributes of high performance buildings. At the same time, the modular building industry offers the best strategies for construction waste management, material efficiencies, and superior air quality.

A full copy of the whitepaper is available on the MBI Web site here.

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