Canon
Classical Canons & Sanskrit Treatises
The treatises the reference cites, with the edition and translator each citation was checked against.
Chapter 1
Sthāpatya Veda & Vāstu Compendium
Vāstu & Sthāpatya Veda Compendium
Documentation for Vāstu Śāstra: the classical canon with its verse citations, the geometry the calculations use, and where Vāstu preferences meet the national model code and the local bye-laws that bind a building.
Chapters in this Compendium
14 chapters
Verse-cited
Entrance Padas & the Bṛhat Saṃhitā
The thirty-two doors: what the text says of each, with its verse, and the modern practice beside it.
Chapter 2
Measure
Hastas & the Aṅgula
The named cubits with their aṅgula counts and sources, and why their length in metres is derived.
Chapter 3
Grid
The Maṇḍūka Grid in Two Traditions
Each deity's share of the 64-pada grid in the Bṛhat Saṃhitā and the Mayamata, and what the texts leave to be derived.
Chapter 4
Coverage
Where Rooms Belong, & What the Sources Say
Every room in seventeen positions beside the located statements that support, contradict or only note its score.
Chapter 5
Corpus
The Rule Corpus & Its Evidence Classes
Every rule the engine holds, graded A to F by how well it is evidenced, with its citation.
Chapter 6
Geometry
Geometric Foundations & Centroid Math
Shoelace polygon centroid (Nābhi), True North rotation matrices, magnetic declination correction, and ray-casting sector evaluation.
Chapter 7
Zonation
Maṇḍala Grids, 16 Zones & 32 Pādas
Paramasāyika (9×9) and Maṇḍūka (8×8) grids, 16 directional zones (22.5°), 32 entrance doorways (11.25°), and Marma buffers.
Chapter 8
Āyādi Math
Āyādi Ṣaḍvarga Modular Formulations
The six canonical modular equations (Āya, Vyaya, Yoni, Vāra, Nakṣatra, Āyu), the hasta, and the rule that Āya should exceed Vyaya.
Chapter 9
Building science
Daylight, Heat & Wind: Building Science Beside the Texts
What daylight, heat gain and prevailing wind mean for a plan, stated as building science and kept apart from what the texts say.
Chapter 10
Building Codes
Multi-Storey Stacking & Building Codes
Vertical stacking rules, why a wet room over a puja room or a kitchen is avoided, and how Vāstu preferences sit beside the national model code and local bye-laws.
Chapter 11
Samples
Sample Vaasthu Layouts
Illustrative plans read end to end by the engine: room zones, the door's pada and the Āyādi proportions, all computed from the drawing.
Chapter 12
Guide
Concern Guide
A traditional reading of what a household asks about, mapped to the sixteen zones. A traditional reading, not a diagnosis, and no substitute for medical, legal or structural advice.
Chapter 13
Checker
Household Items
Where the tradition prefers household items to stand, checked against the zone they are in.
Chapter 14
Interactive Āyādi Calculator Sandbox
Evaluate architectural dimensions against classical modular formulas live.
Āyādi Ṣaḍvarga sandbox
Illustration, not the engineChange a dimension and watch the modular arithmetic move. The residues here are computed in the page so the steps are visible; the authoritative values come from the Vaasthu engine.
Area = (L ÷ 1.5) × (W ÷ 1.5) ft/hasta = 533.4 hasta²
- Āya (×8 mod 12)
- 4
- Vyaya (×9 mod 10)
- 7
- Yoni (breadth ×3 mod 8)
- 4 · Śvan (Dog)
- Vāra (×9 mod 7)
- Soma (Moon)
- Nakṣatra (×8 mod 27)
- 25
- Āyu (×27 mod 100, no located verse)
- 91
Āya does not exceed Vyaya — the one condition the traditions share.
Yoni 4 (South-West) is an even yoni, not counted good — the texts' list gives no more than that.