Which mechanism explains the limited lifting height of ancient Roman concrete vaults and domes?

💡 Explanation

When vaults increase in height, tensile stresses in the concrete increase because the self-weight creates bending moments, leading to cracking if the tensile limit is exceeded. Therefore, tensile weakness limits the achievable height, rather than pressure, seismic effects, or thermal expansion which are secondary factors.

• Which agricultural outcome benefited pre-Columbian maize cultivation within terrace systems?
• Which benefit arose when Andean terraces used stone walls to retain soil in cultivation systems?
• Which environmental outcome resulted from initial maize cultivation expansion onto the Meseta Central plateau during the pre-classic period?
• Which risk increased within chinampa agriculture due to intensive maize cultivation around Tenochtitlan?
• Which agricultural challenge did pre-Columbian chinampa systems primarily address in the Valley of Mexico?
• Which optical effect, explained by Ibn al-Haytham, causes a mirage on hot desert surfaces?