[\/et_pb_text][et_pb_button button_url=”https:\/\/journal-buildingscities.org\/articles\/10.5334\/bc.31\/” url_new_window=”on” button_text=”Read the Complete Research Paper” button_alignment_tablet=”” button_alignment_phone=”center” button_alignment_last_edited=”on|phone” _builder_version=”4.19.4″ _module_preset=”default” custom_margin=”30px|0px|0px|0px|false|true” custom_margin_last_edited=”off|desktop” global_colors_info=”{}”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_3,1_3″ admin_label=”row” _builder_version=”4.20.2″ _module_preset=”bf26fd0a-cc42-4644-924d-a8b83ba2ae46″ global_colors_info=”{}”][et_pb_column type=”2_3″ _builder_version=”4.19.5″ custom_padding=”|30px|||false|false” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text content_tablet=”” content_phone=”” content_last_edited=”on|phone” admin_label=”Text” _builder_version=”4.20.4″ link_font=”|700|||||||” link_text_color=”#0075A9″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” width=”%22475%22″ height=”%22166%22″ global_colors_info=”{}”]<\/p>\n
Publication date: September 2020<\/b><\/b><\/p>\nAuthors: <\/b>Brook Waldman, Monica Huang, Kathrina Simonen<\/h4>\n
Abstract<\/h3>\n
Embodied carbon constitutes a significant portion of a building\u2019s greenhouse gas (GHG) emissions and is a key challenge for the construction and real estate sectors. Embodied carbon includes construction product manufacturing, building construction, material replacement, and end of life. During the specification and procurement stage, designers and contractors have the opportunity to prioritize products with lower carbon footprints<\/a>. Environmental product declarations (EPDs) are a growing source of environmental data in the construction products market and are increasingly being used for (1) environmental performance assessment of buildings and (2) product comparison for procurement decisions during the later stages of building design. An obstacle to identifying and purchasing lower embodied carbon products is a lack of data quality and the transparency of EPDs. However, EPDs vary widely in their data quality and specificity, which can lead to inaccurate and misleading comparisons. A new method is presented to account quantitatively for estimates of variation in underlying data specificity in EPDs to enable fairer comparisons between EPDs and to motivate the reporting of actual variability and uncertainty in EPDs. The application of this approach can help purchasers to assess EPDs quantitatively.<\/p>\n Life-cycle assessments (LCAs) and LCA data can be used within the construction sector to evaluate buildings and to assist in design, specification, and procurement decision-making. A new method is presented to support the assessment of the comparability of functionally equivalent materials and products during the specification and procurement stage. Given the known variation and lack of precision within EPDs, this method provides quantitative metrics that correlate to a qualitative interpretation of EPD precision.<\/p>\n This method can be used by anyone who is using EPD data to make product comparisons at the specification and procurement stage:<\/strong><\/p>\n Keywords:\u00a0<\/strong>construction materials,<\/a>\u00a0construction products,<\/a>\u00a0embodied carbon,<\/a>\u00a0environmental performance assessment,<\/a>\u00a0environmental product declaration (EPD),<\/a>\u00a0life-cycle assessment (LCA),<\/a>\u00a0procurement,<\/a>\u00a0specification<\/a><\/span><\/span><\/strong><\/span><\/p>\n How to Cite:\u00a0<\/strong><\/span>Waldman, B., Huang, M., & Simonen, K. (2020). Embodied carbon in construction materials: a framework for quantifying data quality in EPDs.\u00a0Buildings and Cities<\/i>,\u00a01<\/i>(1), 625\u2013636. DOI:\u00a0https:\/\/doi.org\/10.5334\/bc.31<\/a><\/span><\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.19.5″ custom_padding=”|30px|||false|false” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/carbonleadershipforum.org\/wp-content\/uploads\/2020\/10\/buildings-and-cities-logo.png” title_text=”buildings-and-cities-logo” _builder_version=”4.19.5″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Published in Buildings & Cities in the\u00a0Special Collection: “Carbon metrics for buildings and cities”Publication date: September 2020 Authors: Brook Waldman, Monica Huang, Kathrina Simonen Abstract Embodied carbon constitutes a significant portion of a building\u2019s greenhouse gas (GHG) emissions and is a key challenge for the construction and real estate sectors. Embodied carbon includes construction product […]<\/p>\n","protected":false},"author":31,"featured_media":23178,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"Practice relevance<\/h3>\n
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Published in Buildings & Cities in the\u00a0Special Collection: \"Carbon metrics for buildings and cities\"<\/a><\/h4>\r\nPublication date: September 2020\r\n
![\"\"](\"https:\/\/carbonleadershipforum.org\/wp-content\/uploads\/2020\/10\/buildings-and-cities-logo-300x105.png\"){kind=logo}
Authors: <\/b>Brook Waldman, Monica Huang, Kathrina Simonen<\/h4>\r\nAbstract<\/h3>\r\nEmbodied carbon constitutes a significant portion of a building\u2019s greenhouse gas (GHG) emissions and is a key challenge for the construction and real estate sectors. Embodied carbon includes construction product manufacturing, building construction, material replacement, and end of life. During the specification and procurement stage, designers and contractors have the opportunity to prioritize products with lower carbon footprints. Environmental product declarations (EPDs) are a growing source of environmental data in the construction products market and are increasingly being used for (1) environmental performance assessment of buildings and (2) product comparison for procurement decisions during the later stages of building design. An obstacle to identifying and purchasing lower embodied carbon products is a lack of data quality and the transparency of EPDs. However, EPDs vary widely in their data quality and specificity, which can lead to inaccurate and misleading comparisons. A new method is presented to account quantitatively for estimates of variation in underlying data specificity in EPDs to enable fairer comparisons between EPDs and to motivate the reporting of actual variability and uncertainty in EPDs. The application of this approach can help purchasers to assess EPDs quantitatively.\r\n
Practice relevance<\/h4>\r\nLife-cycle assessments (LCAs) and LCA data can be used within the construction sector to evaluate buildings and to assist in design, specification, and procurement decision-making. A new method is presented to support the assessment of the comparability of functionally equivalent materials and products during the specification and procurement stage. Given the known variation and lack of precision within EPDs, this method provides quantitative metrics that correlate to a qualitative interpretation of EPD precision. This method can be used by anyone who is using EPD data to make product comparisons at the specification and procurement stage:\r\n
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