In a factory on southwest corner there should be NO pits, sumps, septic tank, storage tanks, Bore well etc. If they are there they should be filled with sand and closed. Bore wells should be closed by filling sand and water alternately.
Care should be taken not to install the machinery that are supposed to be erected or installed at lower elevations (below ground level) or in pits In the southwest corner.
In southwest corner one should not try to erect steel structures or columns from the pit and install machinery.
At southwest corner platforms of good heights can be constructed and machines can be installed on the raised platform at elevated level.