Environmental and health related criteria for buildings - ANEC

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IBO - Environmental and Health related Criteria for Buildings permanent opening providing an adequate view out, where the window/opening is ≥20% of the total inside wall area 2. All other relevant building areas are within 7m distance of a wall with a window or permanent opening providing an adequate view out, where the window/opening is ≥20% of the total inside wall area (refer to compliance notes for a definition of relevant building areas and adequate view out). Hea3 Glare Control An occupant-controlled shading system on all windows, glazed doors and rooflights in all relevant building areas is required. Hea4 High Frequency Lighting All fluorescent and compact fluorescent lamps are fitted with high frequency ballasts. Hea5 Internal and external lighting levels All internal and external lighting, where relevant, is specified in accordance with the appropriate maintained illuminance levels (in lux) recommended by CIBSE 65 . Hea6 Lighting zones & controls Is not assessed in this scheme. Daylighting and lighting issues are not obligatory to achieve a BREEAM Multiresidential rating. The section core of Health and Well-being (HEA) is 11.8% (comprising daylighting, lighting, thermal comfort and indoor air quality topics). 5 of 14 available points for Health and Well-Being are achievable through adequate daylighting and lighting as defined above resulting in a section weighting of 36% and an overall weighting of approximately 4%. An additional innovation credit can be achieved if exemplary level requirements exceeding the benchmarks for daylighting mentioned above are met. 9.6. LEED for Homes / LEED-NC 2009 Source: LEED Reference Guide for Green Building Design and Construction (for the Design, Construction and Major Renovations of Commercial and Institutional Buildings Including Core & Shell and K-12 School Projects (ed. US. Green Building Council, Washington, 2009) Daylight topics are not covered in any LEED for Homes category (which means that daylighting is regarded of no or subordinated relevance for low-rise residential buildings). In the new version LEED v3 for New Construction & Major Renovations (LEED-NC 2009) applicable for high-rise residential buildings (more than 3 storeys) daylight topics (earning max. 2 points of 110) are assessed by indicators for Daylight and Views as follows: 65 Code for Lighting: Part 2”, CIBSE, 2004; Lighting Guide 7 “Office Lighting”, CIBSE 2005; Lighting Guide 6 “The Outdoor Environment”, CIBSE 1992; Lighting Guide 9 “Lighting for Communal Residential Buildings”, CIBSE, 1997 BS 5489 Part 1 “Code of practice for the design of road lighting: lighting of roads and public amenity areas”, BSI, 2003 Final Report 98 31 03 2011
IBO - Environmental and Health related Criteria for Buildings IEQ Credit 8.1: Daylight and Views / Daylight (1 point) For earning an IEQ Credit 8.1 the space should be designed to maximize daylighting opportunities through one of the 4 following options. Strategies to consider include building orientation, shallow floor plates, increased building perimeter, exterior and interior permanent shading devices, high-performance glazing. OPTION 1) Simulation Demonstrate through computer simulation that 75% or more of all regularly occupied spaces areas achieve daylight illuminance levels of a minimum of 25 footcandles (fc) 66 and a maximum of 500fc in a clear sky condition on September 21 st at 9.a.m. and 3 p.m. OPTION 2) Prescriptive Use a combination of side-lighting and/or top lighting to achieve a total daylighting zone that is at least 75% of all regularly occupied spaces. For the Side-Lighting Daylight Zone: a) Achieve a value, calculated as the product of the visible light transmittance (VLT) and window-to-floor area ratio (WFR) of daylight zone between 0.150 and 0.180. b) The ceiling must not obstruct a line in section that joins the window-head to a line on the floor that is parallel to the plane of the window. Is twice the height of the windowhead above the floor in, distance from the plane of the glass as measured perpendicular to the plane of the glass. c) Provide sunlight redirection and/or glare control devices to ensure daylight effectiveness. For the Side-Lighting Daylight Zone: a) The daylight zone under a skylight is the outline of the opening beneath the skylight, plus in each direction the lesser of: - 70% of the ceiling height - OR ½ the distance to the edge of the nearest skylight - OR the distance to any permanent opaque partition farther than 70% of the distance between the top of the partition and the ceiling. b) Achieve skylight riff coverage between 3% and 6% of the roof area with a minimum 0,5 VLT c) The distance between the skylights must not be more than 1,4 times the ceiling height. d) A skylight diffuser, if used, must have a measured haze value of greater than 90% when tested according to ASTM D1003. Avoid direct line of sight to the skylight diffuser. OPTION 3) Measurement Demonstrate through record of indoor light measurements that a minimum daylight illumination level of 25 fc has been achieved in at least 75% of all regularly occupied areas. Measurements must be taken on a 10-foot grid for all occupied spaces and recorded on building floor plans. 66 One footcandle is equal to approximately 10.764 lux. Final Report 99 31 03 2011
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