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" "1512" "2006-09-19" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell, Existing Buildings" "The new Household Materials Collection and Training Center will serve the needs of many city residents with it\'s bi-parti building program. Located in a former animal incinerator facility, the structure incorporates a green vegetative screen and roof systems, a solar wall for heating the training facility, the maximization of natural daylighting through skylights and sensors, as well as the reuse of existing insulated metal panels removed from the building. The first or Southern half of the building will include a workforce Training Center to teach ex-offenders practical job skills. This half of the building regularly occupied spaces include a classroom, offices, and a training floor. For these spaces, operable windows and lighting controls servicing the perimeter areas of the rooms have been specified in attempts to meet or exceed the EQc6.1 and EQc8.1 requirements. The training room will utilize the group multi-occupant spaces definition as noted in CIR 0098-EQc6.1-120904 for LEED-NC v2.1 projects. In addition, existing skylights will be utilized to increase the natural daylight exposed to the interior of the building. The second or Northern half of the building includes the Household Materials Recycling Facility, which will give city residents a place to properly dispose of their household hazardous waste: paint, batteries, oil, pesticides, etc. In addition, cell phones, computers, etc. will be accepted for recycling. This portion of the project consists of three spaces - an outdoor yard for hazardous waste storage enclosures, as well as two indoors spaces - Collection/Process area and a materials storage Warehouse area. The Warehouse area, separated from the Collections area by a four hour fire wall, will be used mainly to store bundled materials prior to shipping and is not open to the public. The Collections/Processing area will be typically open to the public one day and two afternoons (equivalent of 2 full time days) a week. During the hours the Collections/Processing area will be open to the public, the two sets of double doors and two industrial garage doors will be opened to the exterior, signaling the facility\'s ""open"" status. These openings will allow access to the Collections/Processing area for the public to drop off of materials, as well as allowing employees to move materials around and out of the Collections/Processing area and to the exterior. The doors are to be open at all times of year in all weather conditions, when the facility is open and running. Due to the rough nature of the facility and the fire resistive requirements by building code for this hazardous portion of the building, windows are prohibited in the Collections/Processing area. Overhead lighting for this area will be controlled by wall mounted switches under a 200 sqft average coverage zone. Request: Interpretation of LEED 2.1 NC Credit IEQ 6.1 pertaining to ""regularly occupied space"" is requested here. Although an industrial (also possibly hazardous) building has been interpreted in CIR IEQc8.1-092403, should it be interpreted in a similar method for IEQc6.1 calculations? CIR 0098-EQc6.1-110901 does suggest some degree of interpretation for areas deemed regularly occupied, but it is not specific enough for our building type/use. We believe that in this case, the regular operation of large, overhead doors as a source for natural light and ventilation is an acceptable substitution for windows. However, our exact situation is presently beyond the scope of current definitions and interpretations. Please confirm if our situation will fulfill the requirements of this credit." "If documentation of official operations policy is provided stating the following, the Collections/Processing area may be excluded from the ""regularly occupied spaces"": 1. The Collections/Processing area will indeed be open to the public only for one day and two afternoons a week AND 2. None of the employees will be ""stationed"" in this space; apart from visits to move materials around and out of the Collections/Processing area." "None" "None" "LEED Interpretation" "1650" "2006-12-15" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell, Schools - New Construction" "(Project is registered under NC 2.1 but will submit this credit according to the requirements of NC 2.2 through LEED Online) Our project is the new construction of a 47,000 ft2 4-story recreation/office building to serve as a community center for the Washington, DC Parks and Recreation department. The program consists of an indoor gymnasium and stage, multipurpose room, arcade, computer training room, offices, classrooms, weight and exercise room, and locker room facilities. Our lighting control strategy is to maximize energy efficiency while providing a suitable level of individual task lighting control for user workstations. The design solution is to offer dual purpose occupancy/ daylight sensors in multi-occupancy spaces, individual task lighting control for 90% of users in open and private offices, and multiple levels of switching in the gymnasium and stage. We are requesting an interpretation for the requirement to provide lighting system controllability for all shared multi-occupant spaces to enable lighting adjustment that meets group needs and preferences. The multi-occupant spaces in our project consist of a gymnasium, a multipurpose room, classrooms, and a weight and exercise room. With the exception of the gymnasium, each of these spaces is less than 2,500 square feet and is provided with at least 4 separate lighting controls as stated in LEED-NC Version 2.1 (Occupancy sensor, Daylight sensor). The occupancy sensor turns the lights on when it senses motion in the room while the daylight sensor keeps the lights from turning on if there is enough daylight. Two of these spaces, a computer training room, and an arcade, are located at the building interior. The controls are the same, but the daylight sensor function will be cancelled due to the lack of daylight in these spaces. The multi-purpose room has an additional level of lighting to accommodate special lighting needs that would require more flexibility. Thy gymnasium is 5800sf and the lighting design for this space is divided into 4 lighting zones, each zone provided with dedicated dual switching. Each light fixture includes two ballasts that are controlled by the dual switches. This space is therefore provided with a total of 8 lighting controls. Will this strategy meet the lighting control requirements for multi-occupant spaces? If it will not, what additional features need to be added to meet the minimum requirements?" "(Ruling per NCv2.2) The described approach to meeting the requirement for multi-occupant spaces appears to be satisfactory to achieve the credit, but additional information will be required in your submittal to confirm the design intent. You list the number of controls per room but do not relate these controls to the anticipated needs and preferences of the occupants in all cases. In your submittal, list the types of each control provided and provide a narrative to describe how the controls match the functionality of the room. For example, describe how the switches/sensors in the computer training room create different lighting levels in that room to support the different operating modes. Applicable Internationally." "None" "None" "X" "LEED Interpretation" "1726" "2007-04-09" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell, Schools - New Construction" "Our project, registered under LEED NC2.1, is a day care facility serving the staff and students of the nearby University of Texas at Austin Campus. As such, the regular occupants of the classrooms are children of such young age as to be incapable of operating heating or ventilation controls and arguably most are not even aware of the ability to do so. Compliance with credit EQ6.1 would be achieved on this project were it not for the required ventilation and heating controls required because the classrooms are considered multi-occupant spaces. We propose that a more proper classification of these spaces be determined by using the standard perimeter and non-perimeter calculations as only the staff in each room will be capable of adjusting the temperature and airflow controls on behalf of the students regardless of the configuration of such systems. Credit Interpretations for other credits have often allowed the consideration of staff in lieu of building occupants in calculations (ie: for number of bicycles in credit SS4.2) when building users are not in direct control of building systems, and we feel a similar argument can be made here. Is it acceptable to calculate the compliance of EQ6.1 as described above considering the unique circumstance that the very young age of the classroom occupants prevents them from using required controls should they be provided?" "Credit EQ6.1 applies specifically to perimeter spaces, which are defined in the LEED Version 2.1 Reference Guide language within this credit. The credit is based on the room area, and not on the number or type of occupants. The only ventilation and heating control requirement is to provide at least one operable window per 200 sqft floor area. To receive Credit EQ6.1 you must provide 1 operable window and 1 lighting control per 200 sqft floor area. Additional multi-occupant ventilation and heating control requirements are part of a separate credit, EQ6.2 and apply to non-perimeter spaces only. For EQ6.2, the spaces in question would qualify as multi-occupant spaces, per the definition in LEED v2.1 Reference Guide. These multi-occupant spaces are required to have control for each space, not for each occupant. For multi-occupant space thermal and ventilation control requirements under credit EQ6.2, refer to LEED v2.1 Reference Guide language for this credit. Applicable Internationally." "None" "None" "X" "LEED Interpretation" "2219" "2008-08-13" "New Construction, Existing Buildings, Commercial Interiors, Schools - New Construction" "For a new 312,000 sf building seeking both LEED CS and LEED CI certifications we plan to comply with the requirements of LEED CI EQ Cr 6.1 to provide lighting controls for both individual and group occupants. We believe however that providing task lights for approximately 1800 employees in workstations when they may not be needed contradicts our sustainability goals. These fixtures, if not needed, only add to the project\'s overall embodied energy and environmental impact. The design team has been very aggressive in providing a task oriented lighting scheme that is efficient and beautiful. The design places direct/indirect fixtures with a large percentage of down light directly over the primary work surfaces to provide optimal foot-candles where they are needed. Of the 1870 employees in the building, 97% of them will be in workstations with partitions at 42"". Because of the low partitions, the only option for providing lighting control is a movable task light. The owner has chosen an LED task light. In order to meet the projects overall sustainability goals while meeting the intent of the credit we propose surveying occupants prior to occupancy as to whether they will want a task light. Those who responded in the affirmative will have a task light upon occupancy. The owner will conduct a post occupancy survey to see if additional employees require a task light or don\'t need the one they have. At any point an employee will be able to request a task light. If 100% of employees request a task light the owner will provide them. Providing the task light as an option gives users the ability to control lighting levels while meeting the owner and LEED\'s overall sustainability goals. Please verify that surveying employees pre-and post-occupancy about task lighting preferences and then providing task lights only to employees in open office areas who desire them meets the requirements of LEED CI EQ Cr 6.1." "The inquiry is stating the following approach as an alternative compliance path to meet the requirements of EQc6.1: 1) Survey all future occupants in advance of occupancy to identify those who desire a task light then provide a light upon move-in, 2) Survey all occupants post-occupancy to identify any persons who desire a task light then provide a light, and 3) Commit to making task lights available to all employees who request them at anytime. A survey based approach will meet the requirements only if 90% or more of the respondents request a task light and are provided with the equipment. The described situation makes a very strong case for decreasing environmental impact in not requiring the potentially unnecessary acquisition of products that may not be used by building occupants. The project team should explore credits in other categories of LEED for this strategy, as the elements outlined above may help in achievement of other points. Please note that task-ambient lighting systems that provide low levels of ambient light supplemented with additional task lights have the ability to reduce energy, reduce environmental impact by avoiding installation of excessive ambient light fixtures that provide task illuminance. The intent of EQc6.1 is that the occupants be given individual control to change their light levels to suit their needs. A survey based approach makes the user aware of their needs at the time of the survey only, it does not give them control over their lights unless they respond in the survey that they need a tasklight.\n **Update October 1, 2013: Applicable credits have been updated." "None" "None" "X" "LEED Interpretation" "231" "2001-06-26" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell, Existing Buildings" "Our team has selected to provide operable windows and light controls to achieve this credit. Our building skin is a repeating pattern of precast concrete panels and a glass curtainwall system. The building will house an open office work environment. Currently we have ?x? operable windows spaced 1? apart on the north and south elevation and 2? apart on the east and west elevations. It appears that the number of windows might be lower than specified however the large size windows exceed the normal operable office window. The intent of the goal appears to be achieved although we would like to assure that the requirements of the credit do not keep the project from earning this point. If quantity of windows is truly the issue our fenestration pattern dictates that the most cost effective place to add operable windows would be directly on top of those already in the design or simply break the ?x? window into two \'x? windows. Neither of these strategies appears to change the intent but would bring us within the credit guidelines. Also, our design team would like to confirm whether corridor space in an open office environment is considered a ""regularly occupied area"". There is a 6\' circulation path along the entire building perimeter that does not contain any work or meeting areas." "The intent of the credit is to provide a high level of occupant control at the perimeter of the building. The requirement results in an operable window at about every 13 feet along the exterior wall. As described, the project does not provide this level of functionality with operable windows occurring at roughly half the expected frequency. The number individual zones is then also about half the expected frequency, so the intent is not met. If the circulation zone is within the open office environment, then it is not a corridor. It is considered part of the regularly occupied area by LEED. Applicable Internationally. " "None" "None" "X" "LEED Interpretation" "2310" "2008-09-23" "New Construction, Existing Buildings, Commercial Interiors, Core and Shell" "Our project is a multifamily residential building and we would like to verify our approach in meeting the requirements of credit EQ C6.1. Based on the CIR ruling dated 1/29/2008, by providing on/off controls for fixed lighting installed in spaces for individual use (kitchens, bedrooms) and shared multi-occupant spaces, this credit can be achieved. However, it is not clear if providing switched wall receptacles is an acceptable control measure for spaces with no fixed (permanent) lighting installed and hence our query. Our approach to the credit is outlined below 1) For the residential unit bedrooms, kitchen and dining rooms, fixed lighting will be installed, serving the needs of those spaces. On/off controls for the light fixtures will be provided. 2) In addition, the bedrooms will also have switched wall receptacles for the convenience of the tenants individual lighting needs. 3) The living rooms will not have any fixed lighting installed. A switched wall receptacle, allowing the tenant to choose their own light fixture, gives the tenant controllability of the light with an on/off switch. We believe that the intent of the credit to provide \'controllability\' of light is met, even if the actual light fixture is not permanently installed. 4) The living room will also have a junction box for a future fan or ceiling light, at the discretion of the tenant with a separate wall switch to control the fan and light independently. 5) The clubhouse area which can be regarded as a shared multi-occupant space will have occupancy sensors for lighting and also on/off switches for manual over ride. Please confirm that the above approach is acceptable." "The applicant is requesting clarification regarding the use of switched receptacles in residential applications to satisfy the credit requirements. The proposed approach appears to satisfy the credit intent. The LEED-NC v2.2 Reference Guide states that task lights do not need to be permanently wired and ideally allow the occupant to reposition the lighting fixture. This guidance is also applicable to group multi-occupant residential spaces. The living room, which is not equipped with fixed lighting, has been provided two separate controls: switched receptacles for non-fixed lighting fixtures and a junction box and lighting controls for a possible future fixture. The installation of switched receptacles provides occupants with another level of lighting control. In addition, all of the other spaces have been provided with fixed lighting that satisfies the requirements outlined in the 1/29/2008 CIR. When applying for this credit, the project team should also provide documentation to confirm that a sufficient number of lighting fixtures to provide the required space lighting have been connected to the proposed controls for group multi-occupant spaces.\n\n **Update October 1, 2013: Applicable credits have been updated." "5140" "None" "LEED Interpretation" "5104" "2008-01-29" "New Construction, Commercial Interiors, Core and Shell, Existing Buildings" "The Reference Guide states, on page 357, that EQ credit 6.1 requires provision of (1) ""individual lighting controls for 90% (minimum) of the building occupants to enable adjustments to suit individual task needs and preferences"" AND (2) ""lighting system controllability for all shared, multi-occupant spaces to enable adjustment that meets group needs and preferences."" On the following page under Calculations, requirement (1) is interpreted to mean that 90% of people occupying ""workstation locations intended for individual use"" must have ""task lighting that enables adjustment to suit individual task needs"" (on/off at minimum). We struggle to interpret these requirements for multifamily residential units where task lighting is usually provided by the future tenant/owner, and where spaces don\'t easily fall into the categories of ""workstation locations intended for individual use"" or ""shared multi-occupant."" Although the term ""regularly occupied"" is never mentioned in the relevant sections of the Reference Guide, several CIR rulings have established that the requirements of EQc6.1 and EQc6.2 apply only to ""regularly occupied"" spaces (3/15/07 and 10/22/07), and that, for residential units, ""regularly occupied"" spaces refers to ""all spaces except closets or other storage areas, utility rooms, and bathrooms"" (5/23/07). Please clarify the following for regularly occupied spaces in multifamily residential units: 1) For a space that could be considered ""intended for individual use"" (e.g. a kitchen or bedroom), assuming the fixed lighting serving this space has been designed to meet the intended needs of the space, does providing on/off control of the fixed lighting meet requirement (1) above? 2) If not, does providing an additional wall receptacle intended for task lighting or providing dimming controls for the fixed lighting meet this requirement? 3) For a space that could be considered ""shared multi-occupant"" (e.g. a large space for group activity such as eating or entertainment), assuming the fixed lighting serving this space has been designed to meet the intended needs of the space, does providing on/off control for the fixed lighting meet requirement (2) above? 4) If not, does providing additional wall receptacles intended for task lighting (one for each expected occupant) or providing dimming controls for the fixed lighting meet this requirement?" "Typical on/off controls in regularly occupied spaces will meet the intent of this credit for multi-family residential projects. Specifically, 1. YES, on/off controls meet the intent of this credit. 2. Not applicable, since 1 is a Yes. 3. YES, on/off controls meet the intent of this credit. 4. Not applicable, since 3 is a Yes." "None" "None" "LEED Interpretation" "5138" "2008-09-15" "New Construction, Schools - New Construction, Commercial Interiors, Core and Shell, Existing Buildings" "Our building has stacking glass walls on the south face of all floors. East walls of the first floor retail spaces have the same type of openings. The areas of these openings range from 90 sf to 400 sf when are they completely open. Where installed, these openings make up at least 75% of the entire wall area. We would like an equivalency for counting those areas toward the operable window requirement of IEQc6.1. We propose that the area of a standard window is 6 square feet. We request an allowance to account for 1 window for every 8 square feet of stacking glass. For example, a 90 sf stacking glass wall would equal 11.25 operable windows. Please confirm that this calculation method is acceptable." "The applicant is requesting an equivalency calculation between wall openings and operable windows. It is not clear from the description what types of openings are included in the ""stacking glass walls"". Typical retail spaces only have doors that may be held open when the climate is conducive to do so. If the only openings in the wall are primarily for entry and exit, the requested equivalency cannot be accepted. An operable window has a primary function to provide a user controllable and adjustable opening to maintain user required conditions in the space. A door does not have that type of primary function and does not qualify for the credit. Applicable Internationally." "None" "None" "X"