द्विहस्तं तोरणशिरः ॥ कZ_०२.३.२३ ॥
dvihastaṃ toraṇaśiraḥ
A peça superior (cabeça) do arco do portal (toraṇaśiras) deve ter dois côvados.
Uniform dimensions simplify procurement, reduce fraud in materials, and ensure structural consistency across state works.