वास्तु मण्डन (मण्डन सूत्रधार - गृह, राजप्रासाद, दुर्ग एवं नगर-वास्तु सटीक)

Ch. IV – Gṛhādiniveśaḥ 111
Now the door:
46. For a house, the height of the door may be of three types mea-
suring 70, 60, or 50 fingers of a hand.
47. The breadth of the door of a house, or palace, conveyance, bed,
seat will be half of their length or may be more than 1/16th
part.
48. The width of the inner part of the (door ) frame will be equal to
1/7th part of the door width. Each frame, if divided by 3, will be
equal to its projection and width.
49. The lintels will be decorated with the motifs of Elakā leaves as
well as Bakulā flowers. The base will have the same height as half
of the upper lintel.
50. Nāgadanta can be projected up to one Pāda ( 1/4th ) of the breadth
of the door . Then the Āya, Vyaya, and part of the edifice will be
sanctified according to the position of the stars and the Moon.
51. In a house, the main door is to be erected on the left side, the
door of the stable will be on the right side and the door of the
elephants enclosure in the centre.
As well as:
52. A door should not be constructed in the inner chamber, but the
middle part should not be discarded. The inner (Madhya) door
should be placed on the 24th section of the total width of the
gate.
53. The door of a mansion meant for Gods, Brahmins and Kings can
be placed in the middle of a building, but for all other people the
door is to be located near the middle of the room.
Thus ends this topic.
54. The doors of all types of houses are to be erected on the mould-
ing of a base (Paṭṭasthāna); it should not be erected under the
beam, but according to some, this is good for Kings.