Life-Cycle Inventory Analysis of Laminated Veneer Lumber Production in the United States

https://research.thinkwood.com/en/permalink/catalogue141
Year of Publication
2015
Topic
Environmental Impact
Energy Performance
Material
LVL (Laminated Veneer Lumber)
Author
Bergman, Richard
Organization
International Convention of Society of Wood Science and Technology
Year of Publication
2015
Country of Publication
United States
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
Topic
Environmental Impact
Energy Performance
Keywords
Life-Cycle Assessment
US
Life-Cycle Inventory
Energy Consumption
Carbon
Language
English
Conference
The 58th International Convention of Society of Wood Science and Technology
Research Status
Complete
Notes
June 7-12, 2015, Grand Teton National Park, Jackson, Wyoming, USA
Summary
Documenting the environmental performance of building products is becoming increasingly common. Developing environmental product declarations (EPDs) based on life-cycle assessment (LCA) data is one way to provide scientific documentation. Many U.S. structural wood products have LCA-based “eco-labels” using the ISO standard. However, the standard requires underlying life-cycle inventory (LCI) data to be of recent age. This study updates the gate-to-gate manufacturing LCI data for laminated veneer lumber (LVL) for Pacific Northwestern (PNW) and for southeastern (SE) United States. Modeling the primary industry data per 1.0 m3 of LVL through LCI analysis provides the inputs and outputs from veneer logs to LVL starting at the forest landing. For PNW and SE, cumulative mass-allocated energy consumption associated with manufacturing 1.0 m3 of LVL was found to be 5.64 and 6.87 GJ/m3, respectively, with about 25% of the primary energy derived from wood residues. Emission data produced through modeling found that estimated biomass and fossil CO2 emissions in kg/m3 were 127 and 139 for the PNW and 108 and 169 for the SE. One m3 (~535 OD kg wood potion) of LVL stores about 980 kg CO2 equivalents. The amount of carbon stored in LVL thus exceeds total CO2 emissions during manufacturing by about 350%. This study provides the necessary gate-to-gate LVL manufacturing LCI data for the cradle-to-gate LCA to develop an updated EPD.
Online Access
Free
Resource Link
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