Over prolonged use, which increasing risk was encountered on Roman roads constructed with layered paving?

💡 Explanation

Under frequent heavy use, repeated axle loads induces plastic deformation (rutting) within the road base because the shear strength is exceeded, this causes instability compromising road integrity. Therefore rutting results, rather than cracking, frost heave or dust which are consequences from different climatic or material conditions.

• Which optical distortion arises in early refracting telescopes due to simple lens curvature limitations regarding light dispersion?
• Which optical effect allowed Alhazen to more accurately model human vision and astronomy?
• Which advancement directly resulted from Islamic scholars’ using algebraic methods to refine Ptolemy’s astronomical models?
• Which mechanical advantage strategy did Roman siege engineers primarily utilize when deploying the aries (battering ram)?
• Which phenomenon allowed Alhazen to accurately trace light paths during experiment design?
• Which mechanism limited the maximum size of pre-industrial water wheels used for power generation?