Which mechanism allowed Mayan architects to create corbelled arches without true keystones?

💡 Explanation

When building corbelled arches, cantilevered stone layering occurs because each higher layer extends inward slightly beyond the lower layer, gradually closing the gap. Therefore cantilevered stone layering results, rather than reinforcement, cement bonding, or post-and-lintel which rely on different structural techniques.

• On ancient Roman roads, which risk increased as wagon wheel load exceeded designed capacity?
• Which risk increased due to incomplete Roman concrete curing in coastal fortifications?
• Which outcome most directly resulted when Roman siege catapults faced prolonged exposure to marine environments?
• Which optical consequence arises when polishing astrolabe sighting vanes unevenly using abrasive compounds?
• Which navigational outcome improved accuracy when multiple lunar distance observations produced differing time calculations in the 1760s?
• Which outcome results when charcoal iron-making furnaces are built too tall without sufficient forced air?