Here's that info sheet, sent to me by Colin Hamilton at the Mpls Public
Library.
Betty Tisel
Kingfield
[EMAIL PROTECTED]
=============================================
MEMORANDUM
Date: August 28, 2002
To: Rick Johnson, Project Coordinator
From: Thomas Hysell, aia
Comm. No: 2002045
Re: sustainable goals for the project
Minneapolis Central Library
Minneapolis, Minnesota
Executive Summary
The new Minneapolis Central Library project will embrace Green Architecture
principles and utilize the Minnesota Sustainable Guidelines for the
deconstruction of the existing library / planetarium and for the
construction of the new facility. The Project Office, the Design Team, and
the Construction Manager are all committed to the incorporating these
principles and maximizing sustainable design goals for the new Minneapolis
Central Library.
Background
The Minneapolis Library Board in February 2002 (post architect and
construction manager selection for the project) adopted a policy regarding
Green Architecture/Sustainable Design which in part states that:
"Green buildings have environmental benefits by reducing resource impacts
and long term financial benefits by reducing the total costs of maintenance
and operation. Green libraries also send a message to our community about
the Library Board�s interest in preserving our environment, protecting the
health of current and future generations, and educating the general public
about the role of green buildings. For all of these reasons, the Library
Board incorporates sustainable design, construction and maintenance
strategies into its facilities planning and management.
The degree to which these sustainable building strategies will be
incorporated into library facilities will be determined on an individual
project basis, working with design and construction firms that have been
chosen for each project. In making choices about building design,
construction and operation, the Library Board will consider capital budget
limitations, building program requirements, historic preservation issues,
and will develop standards and goals for improving the environmental and
economic performance of library facilities."
The Implementation Committee for the new Minneapolis Central Library has
also expressed a strong desire to explore options for incorporating
sustainable design into the new Minneapolis Central Library.
Both Architectural Alliance[1] <#_ftn1> and Cesar Pelli &Associates
Architects[2] <#_ftn2> have been at the forefront of Sustainable Design.
Both firms have in-house specialists who are active in the Sustainable
Design community and are LEED certified.
Minnesota Sustainable Guidelines
The project will adopt the Minnesota Sustainable Guidelines for our goals
and their procedures for scoring. The Design Team has been working with
these principles throughout the Schematic Design process and to date our
strategies for achieving the Minnesota Sustainable Guidelines goals include:
1. Utilization of District Energy and Cooling systems.
2. Working with the Excel Energy Assets program to achieve a low
energy use for the building.
3. Natural shading and low impact landscaping.
4. Displacement ventilation through low velocity underfloor air to
cool only the lower eight feet of these high volume spaces. This is a
significant step to reduce ongoing energy costs. We are considering an air
side economizer that will balance outside air with reconditioned interior
air when the exterior temperature is favorable to this approach.
5. We are investigating the potential of gray water recycling to
reduce water consumption.
6. Examination of use of recycled building materials.
7. Extensive use of daylighting and daylighting controls (e.g.,
when it is substantial bright due to outside light, then interior lights
will stay off). We are investigating the potential of an interior light
shelf that will bounce natural day light into the library and reduce the
need for artificial lighting.
8. Alternative transportation systems are in place due to the
location of the building on major bus routes. The building will reinforce
this by providing underground parking and easy use of bicycle storage
facilities.
9. Our use of materials will channeled through a review process to
explore alternatives in concert with the Guidelines to maximize the use of
local and regional material; certified wood products; materials with
recycled content; materials with a low VOC content, and materials with low
life cycle impact.
10. Indoor air quality, lighting, lighting controls, occupancy sensors
and similar systems will be continually evaluated and explored for use.
11. Exterior envelope design will be tuned to sun exposure with a
greater percentage of vision glass to the north and less to the south. We
utilize high performance glazing that is insulated with the potential of
low-e and ceramic frit coatings to reduce heat gain. We are exploring the
potential of advanced insulation that will minimize CFC�s. We are also
considering is a low impact green roof, that is planted, for the roof
terraces and at a minimum the use of light colored roofing materials that
will mitigate the build up a heat island in downtown Minneapolis.
12. We are exploring the use of recycled fly ash, a byproduct of tar
production, in the concrete mix. The concrete structural system will provide
an excellent source of thermal mass to regulate heating and cooling needs.
Demolition
A key component to a viable sustainable architecture program is the
demolition of existing facilities and recycling of construction waste. The
demolition, or �deconstruction,� of the existing library and the planetarium
has already been established to include goals to recycle a minimum of 80% of
the structure per the Minnesota Sustainable Guidelines. We will be working
closely with the selected demolition contractor to put proper salvage,
re-use and recycling procedures in place to ensure maximum recycling (for
example, since the existing structure is concrete, substantial recycling and
crushing for use as Class 5 road underlayment is expected). In addition we
would recommend ongoing waste management during the construction of the
project.
Commitment
The commitment to Green Architecture principles will address all aspects of
the project. While costs and function will be critical decision factors,
sustainable design options will always be explored and will guide the
project to alternatives that support the Library Board and City of
Minneapolis in their commitment to the environment.
[1] <#_ftnref1> The Hennepin County Maintenance Facility, designed by
Architectural Alliance, was a Pilot Project for the Minnesota Sustainable
Guidelines. From an internal sewage treatment plant that allows re-uses of
cleansed domestic water for the flushing of toilets in the facility to
achieving a recycled content in excess of 15% is accounted in building
materials and finishes,.
For more information refer to the Case Study portion of the Minnesota
Sustainable Guidelines website at
http://www.sustainabledesignguide.umn.edu/MSDG/case/medina/medina.html.
[2] <#_ftnref2> Cesar Pelli�s 20 River Terrace, Battery Park City, New York,
NY is being developed for a Gold LEED rating with solar panels to generate
electricity and gray water seweage treatment plants. Other projects include
Goldman Sachs Headquarters (Silver LEED), Overture Center (Bronze LEED), and
the Yale University Engineering Building (Silver LEED).
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