Geometrical Structures of Native Hawaiʻian Kōkō Nets

Abstract

To improve the transportation of valuable resources, Hawaiians developed kōkō nets. These nets were bags of netted cords in the shape of an elongated cone above the lower hemisphere composed of natural fibrous materials. The proposed work analyzes the various lengths, structures, and connections of cord segments between knots. Tensile strength will be measured experimentally using structural stress measurements. The distributed weight load on segments will be calculated using engineering mechanics principles. The developed mathematical models will explain how the net, consisting of 1D string made in the 2D plane, can carry 3D volumetric heavy objects without geometrical mismatches between dimensions in proper balances of forces and torques. After matching the experimental and theoretical results, the proposed work will provide an in-depth understanding of the engineering aspects of the kōkō nets as an essential component of the Hawaiian lifestyle being inherited to the present. The convergence of modern engineering principles and Hawaiian cultural living methods will provide a holistic insight into designing more nature-friendly engineering practices.