1.1 This practice describes a set of indoor, low-rise, residential building scenarios that can be used to estimate and compare inhalation exposure concentrations of volatile organic compounds (VOCs) emitted by new building products and furnishings and from indoor use of consumer products. This set of standardized scenarios includes new and existing residences and broadly represents typical single-family detached residences and typical low-rise multifamily units in North America. 1.2 This practice identifies and summarizes typical building sizes and configurations, occupancies, interior space characteristics, and air change rates (or outdoor air flow rates) based on published information and standards. 1.3 Where published information is lacking or incomplete for the quantities of interior building products, this practice employs an approach based on material dimension takeoffs from sets of representative blueprints and plans to develop representative values. Values for types and quantities of new furnishings are estimated based on occupancies and industry sales data. 1.4 This practice develops typical use conditions for various categories of consumer products that are applied in residences. 1.5 Where supported by scientific data and modeling, this practice estimates attenuation factors for VOC emissions from building products that are part of assemblies with their surfaces not directly exposed to indoor air. 1.6 This practice is intended for use with ASTM and other standards that quantify the emissions of VOCs from building materials, products and furnishings in small-scale and full-scale chambers on an area or per-unit basis. ASTM and other standards that measure the bulk concentrations of VOCs in containerized products also provide data for use with this practice. 1.7 This practice facilitates indoor air quality modeling to estimate inhalation exposure concentrations of VOCs resulting from the installation, application or use of building products, furnishings and consumer products. A steady-state mass balance model with simplifying assumptions is used to estimate exposure concentrations at a particular time from days to weeks following installation or application of building products and furnishings. Trends in VOC emissions over these time intervals are described by application of mathematical models. Exposure concentrations and cumulative exposures over defined time intervals resulting from the use of consumer products are estimated assuming a first-order decay model. 1.8 Where there are sufficient data, this practice uses a probabilistic approach to define central tendency values and to estimate uncertainty with respect to the population of the housing stock represented by an individual scenario. 1.9 The set of residential exposure models described in this practice may be used by manufacturers; manufacturing industries; building and product rating systems; architects and building designers; product certifiers and labelers, consumers, and others to estimate and compare the indoor air quality impacts of products, furnishings and consumer products. 1.10 The scenarios in this practice are not appropriate for predicting the actual exposure concentration in any given building or interior space. Such predictions require information on the specific characteristics of the building or space of interest. 1.11 This practice does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The set of residential exposure models described in this practice may be used by manufacturers; manufacturing industries; building and product rating systems; architects and building designers; product certifiers and labelers, consumers, and others to estimate and compare the indoor air quality impacts of products, furnishings and consumer products.
KeywordsBuilding products, Consumer products, Emissions, Exposure concentrations, Furniture, Indoor air, Indoor air quality modeling, Multi-family residences, Residences, Volatile organic compounds
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development