What it does
Separates true basements from semi-basements and lower ground floors before applying basement rules.
Where
Below-ground floors
Explanation and notes
A floor dug 40% into the ground with 60% above is a semi-basement, not a basement. A basement that gets proper full light is a lower ground floor. Where no sun ray reaches at all, the land becomes dead land, fit only for activities that need no sunlight.
When the main door of the building and the boundary wall gate stand face to face in one line, the arrangement is utsang (sammukh) dwar, the best door coordination in any direction.
Coming out of the main door and reaching the boundary wall gate by moving clockwise forms purna bahu (complete arm) dwar, which completes the purpose of every outing.
Leaving the main door and reaching the boundary wall gate by moving anti-clockwise forms heen bahu dwar, which cuts the results of even a correctly placed door.
When the boundary gate is on one side but the main door is opened at the back, so that one walks around the whole house to enter, the arrangement is prishth bhang dwar and gives no results.
For an auspicious journey or an important meeting, leave the house and first move the vehicle clockwise, even if the road later turns the other way.
A main door on an auspicious pad still fails when the route to the gate is wrong, when there is any vedh in front, when the house faces a cremation ground, or when the door is out of plumb.
A house whose front faces a cremation ground does not give results even with correct facing and a correct door; most of the hard work drains away.
N4, E3 and W4 are the Mahalakshmi doors through which Lakshmi enters; a house with all three open sees a heavy flow of money and many sources of income.