scope:

This paper presents the methodology and results of cradle-to-gate life cycle assessments (LCAs) performed for full-scale, root-inspired ground anchor (RIGA) prototypes, and conventional straight-shaft ground anchors (CGAs). LCAs performed in this study quantified the total environmental emissions of each ground anchor system in lb CO₂e emissions per anchor installed, for anchors anticipated to have equivalent ultimate capacities. Based on preliminary load-displacement pullout test results, comparison is made between a temporary 55-foot long CGA and a 38-foot-long RIGA. The CGA is estimated to emit 942 lb CO₂e, while the RIGA is estimated to emit 703 lb CO₂e per anchor, a 25% reduction. Material savings of 191 lb of cement and 28 lb of ferrous products per anchor are also expected. System boundary limits, manufacturing process assumptions, and assessment implications are discussed.