YOU SAID:

The building cracked under its own weight.

INTO JAPANESE

建物は自重で割れた。

BACK INTO ENGLISH

The building cracked by its own weight.

INTO JAPANESE

その建物は自重で割れた。

BACK INTO ENGLISH

The building broke by its own weight.

INTO JAPANESE

その建物は自重で壊れた。

BACK INTO ENGLISH

The building was broken by its own weight.

INTO JAPANESE

建物は自重で壊れていた。

BACK INTO ENGLISH

The building was broken by its own weight.