Which vulnerability increases when a Roman siege tower's wooden cladding dries excessively under prolonged sun exposure?

💡 Explanation

When dry wooden cladding is exposed to sunlight thermal energy increases. Because the cladding acts as natural kindling alongside sources of friction, small sparks from a trebuchet payload are likely increase the incidence of autoignition when siege weapon operators using the tower are struck by projectiles. Therefore, autoignition from solar heating results, rather than collapse, splintering, or rotting which require mechanical failure or sufficient moisture.

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