why do you have to be careful about the location of the structural girders and beams in a building when..?

Question

why do you have to be careful about the location of the structural girders and beams in a building when making magnetic measurements?

does the magnetic force make the beams weaker? thats my only guess.

Answer 1

Favorite Answer

"does the magnetic force make the beams weaker?"

no way!!! wow, what a strange idea.

The steel beams change the magnetic lines of force so measurements of magnetic fields will change from what they would be if the beams were not there.

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Answer 2

sophisticated factor. look in search engines like google. it may help!