V Structural Longevity
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Key Insight

The oldest walls have no mortar

Dry-fitted stone structures outlast mortared equivalents by 86 percent on average

0 100 200 300 400 500 600 YEARS 120 180 100 350 650 Rammed Earth Timber Frame Reinforced Concrete Mortared Stone Dry-Fitted Stone +86% vs. mortared
This is the Inca Ashlar Stonework design system, applied by Curio Design — a design-style library for AI agents. Full Inca Ashlar Stonework guide → designbycurio.com/learn/andean-gray-stone-inca