चतुर्दण्डापकृष्टं परिखायाः षड्दण्डोच्छ्रितमवरुद्धं तद्द्विगुणविष्कम्भं खाताद्वप्रं कारयेदूर्ध्वचयं मञ्चपृष्ठं कुम्भकुक्षिकं वा हस्तिभिर्गोभिश्च क्षुण्णं कण्टकिगुल्मविषवल्लीप्रतानवन्तम् ॥ कZ_०२.३.०५ ॥
caturdaṇḍāpakṛṣṭaṃ parikhāyāḥ ṣaḍdaṇḍocchritam avaruddhaṃ tad dviguṇaviṣkambhaṃ khātād vapraṃ kārayed ūrdhvacayaṃ mañcapṛṣṭhaṃ kumbhakukṣikaṃ vā hastibhir gobhiś ca kṣuṇṇaṃ kaṇṭakigulma-viṣavallī-pratānavantam
At a distance of four daṇḍas from the moat, he should construct an embanked rampart: six daṇḍas high, with breadth twice that, made from excavated earth; shaped as a raised accumulation, or flat-topped for platforms, or bulging/rounded; compacted by elephants and cattle; and covered with thorny shrubs and spreading poisonous creepers.
It is a practical engineering method to densify earthworks using available state assets, improving load-bearing capacity and erosion resistance.