Manasara 13.34

13.34

uttaraṃ cāṃśakaṃ cordhve kṣepaṇārdhārdhakāmbujam
kapotoccaṃ triyaṃśaṃ syādāliṅge cārdhamāgikam

Above, the beam is one part; the projection is a quarter part, the lotus [half a part]; / the height of the cornice should be three parts; in the blocking-course, half a part;