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Design for Disassembly (DfD) is often assessed theoretically, with limited empirical evaluation of operational effort at the component level. This paper proposes an empirical assessment framework to evaluate DfD strategies in panelized light timber systems by disaggregating disassembly into individual actions and calculating performance indices. A Disassembly Effort Factor is introduced and, combined with reuse and recycling outcomes, used to calculate a Reuse Potential Index and a Recycling Potential Index. The framework was evaluated through experimental disassembly tests of two full-scale (1:1) assemblies with different DfD strategies. Results showed comparable total disassembly times between Model A (181 min) and Model B (186 min), but contrasting recovery outcomes: Model B achieved a higher average ReuPI (35% versus 16%), whereas Model A showed a higher average RecPI (35% versus 20%). These findings demonstrate that the proposed framework enables empirical comparison of DfD strategies by linking operational effort with recovery potential, supporting DfD-oriented design decision-making in panelized timber systems.
Torres et al. (Tue,) studied this question.