The Shulbasutras of Baudhayana, Apastamba, Katyayana and Manava: With Text, English Translation and Commentary c8.t15.11

c8.t15.11

Square bricks are made with side equal to 1/12 PQ, that is, 21 *aṅg.* 26 *ti* (=1/12 of 261 *aṅg.* 6 *ti*), which is also the value given by the commentator (*......tasya karaṇyā dvādaśena ṣaḍviṃśati tilasahitenaikaviṃśatyaṅgulena pramāṇeneṣṭakāḥ kuryāt*). The inscribed square PQRS is filled with 144 such bricks. 6 such bricks are placed in each of the four segments in the middle of, and touching, the square; 24 such bricks are placed in the segments. The remaining space in each segment is divided into 7 parts as shown in Fig. 67 (a), making their number 28. The brick in the centre of the segment in between the row of 6 bricks and the circumference of the circle is 30 *aṅg.* broad and is called *pradhi madhyamā*. With 2 bricks in the handle, as cut by the circle already described, the number of bricks in the first layer totals 198. The deficit is met by replacing 2 corner bricks within the square by 4 half bricks of the onetwelfth type diagonally cut.