Entry Type ID Date Applicable Rating System Primary Credit Inquiry (LIs) Ruling (LIs) Related Addenda/LIs Related Resources Campus Applicable Internationally Applicable Country Applicability Reference Guide (Addenda) Page (Addenda) Location (Addenda) Description of Change (Addenda) "LEED Interpretation" "10057" "2011-05-09" "New Construction, Core and Shell, Schools - New Construction" "MRc6: Rapidly Renewable Materials" "Is mesquite wood from the southwest is considered a rapidly renewable material? The tree can grow to maturity in 6 years." "Any source material which is typically regenerated within a ten-year cycle may be considered rapidly renewable. The submittal must include documentation from the wood supplier which describes their harvesting practices, and typical rate of harvest and regrowth." "None" "None" "LEED Interpretation" "1448" "2006-03-06" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "MRc6: Rapidly Renewable Materials" "Our project is a renovation of a university dormitory. We request an interpretation of Materials and Resources Credit 6, Rapidly Renewable Resources. Specifically, we would like to know if plant material used in landscaping can qualify for this point. The LEED NC v2.1 Reference Guide defines rapidly renewable materials as those that ""...substantially replenish themselves faster than traditional extraction demand (i.e., planted and harvested in less than a 10-year cycle)."" All of the plants to be used on our site have been planted and harvested in less than a 10-year cycle. Landscaping is included in CSI Division 2 and all items in Divisions 2 through 10 are to be included when calculating this and other MR credits. Additionally, the Reference Guide shows a sample spreadsheet to calculate compliance with MR Credit 5.1 & 5.2 (Local /Regional Materials), which includes plantings as contributing towards that point. Since all MR points are supposed to include the same materials, it seems reasonable to include plantings in MR Credit 6 calculations, provided they are planted and harvested within a 10-year cycle. We ask for this interpretation because landscaping is not specifically mentioned in the Rating System or Reference Guide for MR Credit 6. Also, if it isn\'t allowed, a project is penalized for having extensive landscaping. Could you please confirm that rapidly renewable landscaping complies with the intention of this credit and should be included in the calculations?" "The strategy described is considered to be standard practice and does not fulfill the credit\'s intent to reduce the use and depletion of finite raw materials and long-cycle renewable materials by selecting rapidly renewable materials. The credit is concerned with manufactured building products. Plantings can not contribute to MRc6 achievement. You may exclude them from the denominator in all MR credit calculations so that projects are not penalized for having extensive landscaping. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "5468" "2002-06-03" "New Construction" "MRc6/7: Certified Wood" "Admin CIR MR credit 7 Certified Wood: Is it reasonable to exclude the post-consumer recycled content of composite wood products from the calculations for new wood use in the certified wood credit?. Post consumer wood products seem generally outside the scope of the existing certified wood rating system used by LEED. For example, there seems to effectively be no way to maintain a chain of custody for post consumer wood waste. Also, including post consumer waste in the certified wood calculation seems to set the requirements of the certified wood credit at odds with the recycled content requirements. The LEED calculator specifically uses NEW wood products in the calculations for certified wood products. We propose that this standard be used consistently for this LEED credit, and post-consumer wood products (by %) be excluded from the total wood calculation (numerator and denominator) when figuring out certified wood percentages." "The TAG Committee ruled as follows: The following amendment to MR Credit 7 encourages the stated intents of both MR Credit 7, Certified Wood, and MR Credit 4, Recycled Content, by ensuring that applicants seeking the certified wood credit are not penalized by unnecessarily including in the certified wood calculation products or portions thereof that do not contain virgin wood fiber. Amendment: The calculations for certified wood shall exclude the value of any post-consumer recycled wood fiber content of a product that qualifies to be counted under Credit 4, Recycled Content Materials. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "5564" "2004-07-19" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "For Materials and Resources Credits 3 through 6, the calculation is based on the cost of all construction materials and products as a percentage of the total cost of all materials for the project. Material cost excludes installation (e.g. equipment and labor). Our question is regarding the cost of formwork used during construction. Should this be included as part of the material costs of the project even though it is not permanently installed in the building? Or would it be acceptable to consider it an equipment cost and therefore excluded from the total material cost of the project? What are the implications for resource reuse and local/regional materials points? " "As formwork (rented or purchased for the project) is not a permanently installed material, it is considered as ""equipment"" for all MR credits except MR c7 and thus not included in the material costs of the project. For MRc7, all non-rented temporary wood formwork must be included in the denominator of the credit calculations and the FSC-certified non-rented temporary wood formwork should be included in the numerator. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "5615" "2005-01-11" "New Construction" "MRc4: Recycled Content" "In what cases and how is the 45% materials cost default value used in MR credits? How does MEP factor in, if at all? What should be considered for MRc3-6? " "Per the CIR under MRc5.1 dated 5/24/04, 45% of total project cost will be used as the default value for MR credits 3 through 6. Please reference the above mentioned CIR for details. Applicable internationally." "None" "None" "X" "LEED Interpretation" "5617" "2005-01-11" "New Construction" "MRc6: Rapidly Renewable Materials" "In what cases and how is the ""45% of project materials cost"" default value used in MR credits? How does MEP factor in, if at all? What should be considered for MRc3-6? " "Per the CIR under MRc5.1 dated 5/24/04, 45% of total project cost will be used as the default value for MR credits 3 through 6. Please reference the above mentioned CIR for details. " "None" "None" "LEED Interpretation" "5991" "2001-12-07" "New Construction" "MRc6/7: Certified Wood" "USGBC Clarification to MR Credit 7.0: Certified Wood" "The intent of this credit is to ""Encourage environmentally responsible forest management,"" as stated in the LEED Reference Guide and LEED Rating System. The requirements stated on page 209 of the Reference Guide (formatted version of June 2001) lists eligible ""wood BUILDING components [to include] but not limited to structural framing and general dimensional framing, flooring, finishes, furnishings, and non-rented temporary construction applications..."" The reference to furniture should read ""built-in furniture"" as the LEED Green Building Rating System is designed for commercial buildings and does not address movable furniture partitions, furniture or other transient items. LEED Commercial Interiors (under development) will address the environmental benefits of non built-in furniture systems. Therefore, use only built-in furniture items, and the other listed items, for the calculations for this credit. Applicable internationally. " "None" "None" "X" "LEED Interpretation" "6077" "2003-10-20" "New Construction" "MRc6/7: Certified Wood" "What constitutes the difference beetween built-in furniture and moveable furniture? The project is a university building with classrooms. The students desks and chairs are bolted to the floor so as to preclude rearangement of furniture and maintain aisles and the distance between tables and chairs. The reception desk is bolted to the floor so as to preclude it being moved. Are these items clearly moveable furniture and not built-in furniture? This interpretation request is being submitted both for credit MR7 Certified Wood, credit MR4 Recycled Content and credit EQ4 Low Emitting Materials since we want to know how to treat the furniture in the calculations for these credits." "The LEED Materials and Resources (MR) credits look at materials used in the construction of the base building prior to the installation of fixtures, furniture and equipment (FF&E). Furniture designed as movable that is bolted down for operational purposes, such as the classroom desks noted in your inquiry, can be omitted from the materials calculations. Typically, casework that is constructed for the project and permanently installed by the general construction contractor is considered as a part of the building rather than the FF&E for the project, and should be included in the calculations. If a project elects to include FF&E in one MR credit, the FF&E must be included according to the administrative credit (ADc00) ruling dated 1/21/2003, as follows: ""The June 2001 Reference Guide and previous CIRs state that only built-in furniture may be included in LEED credit calculations. On October 10, 2002, the LEED Steering Committee upheld and expanded upon an earlier decision to overturn previous guidance and allow non-permanent furniture to be included in LEED for New Construction v2.0 and v2.1 calculations, BUT ONLY if furniture is included in the project\'s scope of work. Furniture must then be included in all relevant credit calculations or none at all. The relevant credits, as determined by the Committee, are Materials & Resources credits 3 through 7. A common sense approach must be taken when deciding what to include as furniture. LEED certification reviews will ensure that project teams are reasonable with what they choose to include and will not skew the results and conflict with the intent of LEED. Office systems and furniture are expected to be the more common and applicable products in the marketplace. Because of inherent complexities addressing furniture within the Indoor Environmental Quality category (particularly credits 3.2, 4.4, 8.1 and 8.2), the Committee voted NOT to have projects address the issue of furniture in any IEQ credits. However, since furniture can have an effect on indoor environmental quality, projects that include furniture in the scope of work are eligible to apply for an innovation credit based on LEED for Commercial Interiors (LEED-CI) IEQ credit 4.5, Low-Emitting Materials - Furniture."" Applicable internationally." "None" "None" "X" "LEED Interpretation" "6092" "2005-02-22" "New Construction" "MRc6/7: Certified Wood" "Will you clarify whether wood forms for pouring concrete must be counted in the calculations for MR Cr 7 - Certified Wood? Page 233 of the 2.1 Reference Manual indicates that the credit must consider ""form ply and bracing, etc""; however, page 234 indicates that the credit can ""exclude salvaged and refurbished materials"". When wood forms are used on multiple projects, they serve as tools and equipment rather than materials. If a concrete contractor verifies that their forms have been and will be used on other projects, do wood forms in fact need to be included in the calculations for this credit? Likewise, must the forms be included in the calculations for MR cr 2 - Construction Waste Management?" "Per MRc3.1 Ruling dated 7/19/2004, reusable wood forms are considered equipment and do not need to be included in MR credit calculations - except in MRc7 (certified wood) if the wood is purchased for this project. Rented or previously used wood forms are exempt. Applicable internationally." "None" "None" "X"