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" "1569" "2006-09-15" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "MRc3/3.1/3.2: Materials/Resource Reuse" "Our project relocates an existing visitors center building to a nearby site. After relocating the building, an expansion to the building will be constructed equaling approximately 45% of the original building size. The foundation under the original visitors center building has to be abandoned and a new foundation is being provided. The function of the building and the ownership remain the same. A credit interpretation request (MRc32 ruling 11/4/2002) states that the Building Reuse credit is for buildings reused in-situ. This negates our ability to apply the existing building stock to the Building Reuse credit. We ask that you confirm this conclusion. We would like to pursue credits under Materials and Resources-Resource Reuse using the value of the existing building components. The value of the components will be substantial and we will likely pursue an exemplary performance credit as well. Please confirm the validity of applying the existing building\'s component values to the MRc3.1 and 3.2 points." "The project team is requesting confirmation that a building relocated to the LEED project site is ineligible for credit under MRc1 - Building Reuse. Should that ruling be confirmed, the project is requesting to apply the existing building components retained in the relocated project to the reuse materials component in MRc3. Relocated buildings are indeed ineligible for credit under MRc1. Relocation of existing building shell and components is consistent with the reuse of salvaged materials, and application of these reused materials to the MRc3 calculation is acceptable. Applicable Internationally." "None" "None" "X" "LEED Interpretation" "2052" "2008-03-10" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "MRc3/3.1/3.2: Materials/Resource Reuse" "Materials & Resources credits 3 through 7 state a default percentage of 45% of the total construction hard cost can be used as the Total Materials Cost for a project. We assume this is based on the U.S. construction market. We are working on a project in Europe that is pursuing a Platinum rating, for which the project team believes a more accurate default would be close to 30% of the total construction hard cost attributed to materials cost, while the other 70% is attributed to labor. This is due to the fact that in the European construction market, the labor costs far exceed the material costs, when compared to the United States market. Can we use a different percentage if we provide a letter from a reputable Contractor from Europe stating this fact? If not, what documentation would we need to provide in order to establish a more accurate default percentage for European projects? Please note that in Europe, it is very common to have no submittal process, making it very challenging to collect LEED documentation. The easier we can make it to gain accurate documentation information, while making the real goal to meet the credit requirements and intents, the better experience this project team will have implementing LEED on their project. This will increase the versatility of LEED, making it easier to implement, while still maintaining the same credit requirements and its establishment as a universal metric." "The project team is requesting a lower default percentage of total construction costs to qualify for MR credits 3 through 7. The project team states that due to the increase labor costs in Europe, materials account for a lower percentage of total construction costs. However, European markets vary - similar to the micro-markets in the US. One letter, from one contractor would not provide enough substantial evidence to support altering the default percentage for an entire continent. However in this instance, the project team does not need to use the default percentage. For MR credits 3 through 7 the project team has the option of using EITHER the default percentage (45%) or providing the actual materials costs (excluding labor and equipment). By following the latter approach, the project team will be able to determine if they meet the credit requirements based solely on the cost of materials. Additionally, please note that per MRc5.1 ruling 5/24/2004 and MRc4.1 ruling 8/29/2003 - if any materials outside of Division 2 through 10 are included in the total materials cost, they must be included consistently in all calculations. Applicable Internationally; Europe." "None" "None" "X" "LEED Interpretation" "2225" "2008-07-02" "New Construction, Commercial Interiors, Core and Shell, Schools - New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "Our project team is requesting the ability to contribute Renaissance Specialty Veneer Product, Redwood Veneer towards MRc3.1 credit achievement. The intent of MRc3.1 is to reuse building materials and products in order to reduce demand for virgin materials and to reduce waste, thereby reducing the impacts associated with the extraction and processing of virgin resources. The redwood veneer product is produced from salvaged redwood logs which have been blown down or damaged during natural forest fire. Utilizing salvaged redwoods reduces the degradation associated with the extraction of virgin timber from sensitive forests. Renaissance Specialty Veneer Products has certified the harvesting of redwood trees through the Forest Stewardship Council (SCS-COC-00872). The FSC Chain of Custody number tracks the wood through the production process ensures that the sourcing of the redwood veneer is both socially and environmentally responsible. Our project is requesting recognition for the use of innovative new products which provide environmental benefit and meet the intent of the credit requirements. By salvaging and utilizing downed trees, Renaissance Specialty Veneer is reducing the stress placed on natural forests and demand on virgin resources. As product sourcing and material options continue to grow and become more unique, our project team is interested in selecting products which contribute to the progressions of sustainable principles and environmental stewardship. Please confirm whether our calculation of FSC Certified Salvaged Redwood Veneer towards MRc3.1 credit achievement is acceptable." "The project team is requesting clarification on whether products that contain salvaged logs can be considered a reused material. No, while the materials described likely qualify for MRc7, reused materials are materials that were manufactured, used for their intended purpose, and are being included in a build-out for that same purpose again. Items that were never placed into service, but are being re-sold, are not salvaged material. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "3008" "2002-11-04" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "MRc3/3.1/3.2: Materials/Resource Reuse" "This credit inquiry seeks clarification on how to account for reuse of materials ""harvested"" from an existing building for reuse in the same building. By definition, on page 188 of the Reference Guide: ""Salvaged materials are construction materials recovered from existing buildings and reprocessed for reuse in other buildings."" This seems to imply that materials from an existing building cannot be counted as salvaged materials if they are reinstalled in the same building.\nOur project includes deconstruction of a number of building components with the specific intent of reprocessing them for reinstallation into the building. For example, about 11,000 board-feet of old-growth timbers were harvested from the demolition of existing roof framing. The wood was milled and used throughout the building for architectural millwork features. Clearly, reprocessing was almost total. Also, over two hundred (200) doors were removed, restored to their original finish, fitted for new hardware, and reinstalled. About half were reinstalled into different locations. Some reprocessing was required. A number of other components, such as tack boards, blackboards, and display cases, were harvested, protected and reinstalled into new locations. The only reprocessing was to recondition and reinstall the components.\nWe seek LEEDTM credit for the extensive salvaging work that was accomplished. To exclude the harvesting program we undertook seems an unintended consequence of the definition of salvaged materials. Can we include materials harvested from the building as salvaged materials? We have also considered the potential of applying for an Innovation credit for conducting a ""harvesting"" program. Is that a better approach?" "It is important to make a distinction between salvaged building materials and building reuse. The goal of this credit is to reduce energy and resource impacts associated with production of new building materials, and also to encourage the development of a market in salvaged building materials.\nCredit MR 1; Building Reuse is intended to encourage the reuse of existing building shells and interiors. Components of an existing building which are reused in-situ are considered to apply toward the building reuse credit, not as salvaged materials.\nIn this case, the roof timbers which were removed and reprocessed meet the intent of the salvaged material credit, since they apparently could not have been used for their current function in the existing building, but were salvaged for other valuable building components.\nHowever, the doors represent a component of the building which was reused as the same product, for the same purpose, in the same building. This type of reuse represents the goals of MR Credit 1.3, and thus can contribute to achieving the required 50% threshold for interior component reuse.\nNote that the materials in question cannot be counted simultaneously toward multiple credits (I.e. MR Credits 1,2,3,4,6, and 7). See page 187 of the Reference Guide for this discussion.\n Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "3009" "2004-05-24" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell" "MRc3/3.1/3.2: Materials/Resource Reuse" "Previous CIRs indicate that the mechanical and electrical components are to be excluded from the calculations for Materials & Resources credits 3, 4, 5 & 6. Please confirm that the total material cost excludes these components as well. The total material cost will either be the actual material costs of the Div 1-10 subcontractors or 45% of the total construction cost of the Division 1-10 subcontractors.\nIf items from division 15 or 16 are assembled locally and can be included in the numerator for the total of the Regional Materials calculation, should the materials cost from division 15 and 16 be added to the denominator as well? Please clarify" "CORRECTION, 10/25/05: To attain the materials cost using the default calculation option: begin with the total subcontractor charges (to the General Contractor) for CSI MasterFormat 1995 Divisions 2 through 10 ONLY (instead of all Divisions, as indicated in the original ruling). Applying 45% to this number (as the Letter Template does) will result in a conservative estimate of the materials costs in those Divisions.\n-----------------------------------------------------\nOriginal ruling:\nTo use the default 45% calculation to generate a total materials value, project teams must enter total subcontractor costs of all MasterFormat Divisions. This is noted in the LEED v2.1 Letter Template. The resulting cost solely represents materials in Divisions 2-10 (currently this is not indicated in the Letter Template, but should be). These Divisions include the principal items that are considered in MR Credits 3 through 6. Materials in Div 11 through 14 are optional (item by item), and if included must be added to the numerator and denominator of the equation.\nIf a project team chooses not to use the 45% default calculation to generate a total materials value, then follow the guidance provided in MR Credit 4.1 CIR ruling dated 8/29/2003: Materials in CSI MasterFormat Divisions 2 through 10 must be included. If a project team chooses to include additional items as part of the base material costs it should do so for all relevant material credits, which include MR Credits 3, 4, 5 and 6. See the MRc4.1 8/29/03 ruling for further details. 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" "5594" "2003-12-22" "New Construction" "MRc4: Recycled Content" "If we wish to use a hybrid submission of version 2.0 and 2.1, is it possible to take one of the material credits under version 2.0 and the rest of the material credits under 2.1 even though the calculation sheets are interconnected; similarly can any one credit be selected from one version and the next from another version." "You can submit using either version of LEED for any credit as long as the calculator and other submittal material for the each credit are complete, accurate, and consistent. 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" "5619" "2005-01-11" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "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" "5620" "2005-01-11" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "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" "5714" "2004-04-19" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "Our project involves the complete renovation of 5 existing residence halls. As part of the work, we plan to remove the existing clay tile roof shingles, repair the substrates, and reinstall the shingles. According to the Reference Manual, the above does not meet the requirements for Credit MR 3. Moreover, this also does not count for Credit MR 1, since roof material is excluded in the calculation. Salvaging and reusing the shingles reduces the new materials required for this project as well as diverts materials from the land fill. However, will not be counted toward any LEED credits. Is there any other option for this to count toward a LEED credit? Thank you for your consideration of this matter. " "MR Credit 3 rewards reuse of materials from off site. For a thorough explanation of LEED\'s distinction between salvaged building materials and building reuse, please refer to the MRc2.1 ruling dated 2/26/2003. Non-structural roofing materials were excluded from MRc1 so that those projects replacing old roofing material out of necessity would not be penalized. This being the case, the reuse of clay roof tiles on this project can be included in MRc1 calculations. They also contribute to MRc2, Construction Waste Management. Applicable internationally." "None" "None" "X" "LEED Interpretation" "5785" "2003-05-16" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "Please clarify if ""use of salvaged, refurbished, or reused materials"" for % of building (construction) would include building infrastructure components, i.e. existing in-place HVAC systems or components of a system. Would these items be applicable to MR Credit 1.3, building reuse (interior)? " "Building components that are left in-place do not meet the definition of salvaged, and thus can not contribute to achieving MR Credit 3. Components that are salvaged on-site can be included in this credit calculation only in certain circumstances. Page 192 of the LEED-NC Version 2.1 Reference Guide states: ""A material salvaged during a building renovation can be applied to this credit only if it can no longer serve its original function and has been reprocessed and installed for a different use. Materials that will be reinstalled to serve in their original function may be applied to MR Credit 1.3, Building Reuse. On a project site where an existing building is being demolished or deconstructed, the material that is salvaged on-site and installed in the new building can be used to comply with this credit."" MR Credit 1.3 addresses ""walls, flooring and ceiling systems"" only. Applicable internationally." "None" "None" "X" "LEED Interpretation" "5964" "2005-02-07" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "This project involves the construction of a new 3- story office building and computer facility on a military base. The existing base master plan places the building in an area adjacent to an obsolete runway. Rather than incurring the cost of removing a substantial portion of the 24-inch thick, reinforced concrete paving; the design team has sited the building such that a portion of the runway can be used for the 800 parking stalls requested by the users. Since the project is in a campus-type setting, the project team understands that it can choose to include or exclude the runway from its site and hence all calculations. The design team would like to receive recognition for reusing a resource that would otherwise require the use of green space, be extremely expensive as well as labor intensive to remove or to replace with an equivalent parking area. CIR\'s and examples in the Reference Guide pertaining to MRc3.1 refer to materials reused in a building not in a project as a whole. We would like to broaden the definition of building material. We believe reusing the runway for parking satisfies the intent of this credit even if technically the pavement is not part of a building, but is part of the project. Since we are: " "The runway cannot be applied to MR c3.1. The CIR ruling dated 05/16/03 was misquoted and actually states that a material salvaged on-site can be considered for this credit if it can no longer serve its original function and has been reprocessed AND INSTALLED for a different use. Because the runway is still serving its original function (that of pavement) and it is not being reprocessed and installed (striping is not considered reprocessing), then the reuse of the runway is not be applicable to MR c3.1. However, it could be applied to MRc2 Construction Waste Management. The intent of this credit is to divert material from the landfill. Based on the description of the runway construction; a significant amount of material is being saved from disposal. Depending on the project\'s overall waste management practices, you may be able to earn two points under MRc2, and possibly even achieve exemplary performance and an innovation point (if 95% of the project\'s total weight or volume is diverted). In addition to the points available via MRc2, an additional innovation point may be possible since the building was located to reuse an existing paved surface in lieu of building a new parking lot. " "None" "None" "LEED Interpretation" "5990" "2001-12-07" "New Construction" "MRc3/3.1/3.2: Materials/Resource Reuse" "USGBC Clarification to MR Credit 3.1 and 3.2: Resource Reuse" "The intent of this credit is to ""Extend the life of targeted BUILDING MATERIALS by reducing environmental impacts related to materials manufacturing and transport,"" as stated in the LEED Reference Guide and LEED Rating System. The description of commonly salvaged materials on page 186 of the Reference Guide (formatted version of June 2001) includes ""cabinetry and furniture."" 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 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"