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← HistoryWhich risk increased during Inca bridge construction across chasms using stone masonry?
A)Decreased tensile strength of mortar
B)Increased compressive load on supports✓
C)Higher scour potential near piers
D)Greater thermal expansion of granite
💡 Explanation
An increase in the bridge's length and weight leads to an increase in the compressive load on supports owing to the force summation mechanism. The supports must manage this weight. Otherwise collapse may occur; hence, compressive load is most concerning rather than temperature or tensile/shear factors alone.
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