Calculate the thermal load associated with a change in temperature equal to +/- 20 for a bridge. The bridge has span 171.74m ans 90m in height, and is located in Genoa Italy.

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Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.