Published online by Cambridge University Press: 05 June 2012
In this chapter I investigate the possibility that the Aztecs constructed their ritual precinct at Tenochtitlan along the dimensions of sacred time. Saburo Sugiyama makes this point for Teotihuacan (1993; 2005; this volume), and I have made similar claims for even earlier centers (Clark 2001; 2004a, b). These proposals for Mesoamerican centers have relied on analyses of archaeological data to infer ancient units of measure and their numerical modularities. I reverse the procedure here and start with verified Aztec units of measurement and deploy them to propose numerical values for the dimensions of palaces, temples, and plazas. Discussion is organized in three parts. I first summarize the Aztec system of linear measurements. Next follows my evaluation of the dimensions of two palaces known from early historic records. Finally, I analyze the most current information for the ceremonial precinct of Tenochtitlan (now downtown Mexico City) in light of different native units of measure. These two applications of native measures to public architecture support the premise that the Aztecs, as did earlier Mesoamericans, built their sacred center to accord with the dimensions of sacred time.
Aztec linear units and their metric values
Aztec linear measures were calibrated to the human body, and in ways similar to the Spanish system to which it was later correlated. Both the Spanish and the Aztecs emphasized various arm measures, particularly the braza. A braza was two varas long.
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