Guidelines for Greening Your Concrete Specifications
Suggestions for adding green building related requirements to your concrete specifications are noted referencing the appropriate articles and paragraphs within the MASTERSPEC®
section as a guideline.
For information about AIA's MASTERSPEC contact ARCOM at (800) 424-5080 or visit www.arcomnet.com. Manufacturer and product listings are provided as a starting point. Users are encouraged to research products before specifying. GreenSpec, available at buildinggreen.com, provides a current listing of green building products.
SECTION 09220 - PORTLAND CEMENT PLASTER
Part 1 – General
For LEED Projects – see Division 1 Section ‘LEED Requirements Summary’ for recommendations and requirements for recycled content, regional materials, FSC certified formwork, low-emitting concrete finishes and LEED submittal requirements for all concrete materials
Submittals for Environmental Performance:
1. Provide data indicating the percentage of post-industrial pozzolan (fly ash) cement substitution as a percentage of the full cement plaster composite by weight.
2. Provide product data indicating the percentage of post-consumer recycled steel content in each type of light gauge steel framing and wire mesh as a percentage of the full product composite by weight.
3. Provide product data stating the location where all products were manufactured and where the raw materials were harvested, extracted or recovered.
Part 2 – Products
2.2 Nonstructural Steel Framing members, General
Consider non-structural steel framing products with a high percentage of post-consumer recycled content. Cold formed metal framing typically has 20%-30% recycled content although some providers may manufacture with up to 90% recycled content. Plan for continuous rigid board insulation systems on the inside or outside of steel framing to avoid excessive thermal bridging and conductive heat losses or gains through the envelope. Avoid insulation products made with ozone depleting HCFC’s.
2.5 Metal Lath
Consider metal lath made with a high percentage of post-consumer recycled content.
2.8 Plaster Materials
A. Portland Cement
1. Color For Finish Coats
Consider substituting a percentage of Portland Cement with Class F fly ash to reduce the environmental impacts of cement production as well as increasing the performance of the cement plaster. Fly ash substitution can increase water resistance and flexibility of cement plaster.
B. Colorants For Job-Mix Finish Coats
Consider clay or mineral based natural pigments for plaster colorants.
Portland Cement Association ("PCA") is a not-for-profit organization and provides this publication solely for the continuing education of qualified professionals. THIS PUBLICATION SHOULD ONLY BE USED BY QUALIFIED PROFESSIONALS who possess all required license(s), who are competent to evaluate the significance and limitations of the information provided herein, and who accept total responsibility for the application of this information. OTHER READERS SHOULD OBTAIN ASSISTANCE FROM A QUALIFIED PROFESSIONAL BEFORE PROCEEDING.