This is the 4229th most frequent Japanese word.
仮設
"仮設" means "hypothesis" or "temporary construction."
In this sentence, "仮設" is used to indicate that the building is temporary or provisional in nature.
この建物は仮設のものです。
This building is a temporary one.
Here, "仮設" refers to a hypothesis or provisional theory meant to be tested or used temporarily.
問題を解決するため、いくつかの仮設を立てる必要があります。
To solve the problem, it is necessary to establish several hypotheses.
In this usage, "仮設" is related to the temporary installation or setup of equipment or infrastructure.