The diagram shown is known as Vastu Purusha Mandala, is a square plan that illustrates how the Vastu Purusha was pinned down by Brahma and 44 Gods – face down, with his head to the North-East and his  feet towards the South-West.

The diagram is divided into 9×9 = 81 parts. The positions of the by Brahma and 44 Gods who are holding down the Vastu Purusha are shown (32 in the external enclosures and 13 in the internal enclosures). These symbolic Gods rule various aspects of life and have certain inherent qualities. For example, there should be no weight on the central portion as it is ruled by Brahma, the supreme one. It is to be kept open in the form of a central courtyard. (This was mainly to allow proper flow of air and cross ventilation). The function of the rooms placed in each area of the house was in accordance with the nature of the deity ruling that particular area. This has been shown in the two examples given below:

According to Vastu Shastra, if the house is designed as per the Vastu Purusha Mandala, a perfectly balanced environment which ensures enhanced health, wealth and happiness is created.