expression, godan verb (-tsu)
make sense; be consistent; hold water
Used when a statement, argument, or explanation is logically sound and coherent. Often interchangeable with 筋が通る, but 筋が立つ can emphasize that the reasoning stands up to scrutiny.
See also: 筋が通る
彼の言い分は筋が立っている。
His argument makes sense.
その説明では筋が立たない。
That explanation doesn't hold water.