Vaastu Shastra deals with various aspects of designing and building living environments that are in harmony with the physical and metaphysical forces. Vastu tries to harmonize the flow of energy (Also called life-force, and Prana in Sanskrit) through the house, and also gives the exact directions in which various objects, rooms, materials etc are to be placed. 
Office vastu :-
The Senior executives/ managers/ directors should occupy South-West(Best), West & South Zones
The middle management cadre staff should be placed in North & East zones
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Open plot vastu :-
Bore wells or ponds at North East of the Plot
Entrance door should be on the North East Corner and preferably on the Eastern wall
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Residence of vastu :-
No beam should run above bed.
Master Bedroom in South West corner and bed on South wall.
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Role of vastu :-
Vastu is the bridge between man and nature. Everything is made up of basic five elements – FIRE, WATER, EARTH, SPACE, and AIR. All These elements are only found on earth that is why it is the only planet that supports life and nature.