http://repository.rjt.ac.lk/handle/123456789/6780 Sun, 05 Apr 2026 20:00:14 GMT 2026-04-05T20:00:14Z http://repository.rjt.ac.lk/handle/123456789/6793 Reimagining Key Technical Elements in 'Yodha Eḷa': A Contemporary Perspective Fonseka, Prasad.; Withanachchi, Chandana. Rohana. The evolution of ancient civilisations has been significantly influenced by their ability to harness and manage water resources for agricultural and societal development. One remarkable example of this is the sophisticated irrigation systems that emerged in various regions around the world. Among these, the Yodha Eḷa (YE) Canal stands as an exemplary feat of engineering and hydrological management. In Sri Lanka, there are several canals known as YE in several parts of the country. Out of those, the most intrinsic canal is the one which connects Kalāväva Tank to Tisāväva Tank in Anuradhapura, built by King Dhātusēna. The use of gravity-driven flow, intricate single-side embankment systems, a very low gradient at some places and some components known as diyakali and amuṇu gilma are the features that demonstrate the profound understanding of hydrodynamics possessed by ancient Sri Lankan engineers. Some researchers have explained the functions of certain components of the YE based on certain principles. This article is an attempt to explain those functions from a different perspective based on the concepts known as amuṇu gilma and diyakali with new definitions. The new theory is mainly based on the understanding of the function of the amuṇu gilma, mentioned in later chronicles such as Pūjāvaliya and Alakēśvara Yuddhaya. This is supplemented by the folklore which confirms the existence of amuṇu gilma. With the present research it is expected to confirm that the main objective of the construction of the YE was to ensure the water security of the capital Anuradhapura and the amuṇu gilma was the main component used by the ancient engineers to find the levels, control water flow and ensure water securit Sun, 01 Jan 2023 00:00:00 GMT http://repository.rjt.ac.lk/handle/123456789/6793 2023-01-01T00:00:00Z http://repository.rjt.ac.lk/handle/123456789/6792 ශ්‍රී ලංකාවේ නැගෙනහිර පළාතේ පවතින මල්වර චාරිත්‍ර පිළිබඳ විමර්ශනාත්මක අධ්‍යයනයක් (අම්පාර දිස්ත්‍රික් පදියතලාව, උහන හා පොල්ලෙබැද්ද ප්‍රදේශ ඇසුරෙන්) ගමගේ, ලක්මිණි; ගුණසේකර, බී.එම්.එම්.එන්. Sun, 01 Jan 2023 00:00:00 GMT http://repository.rjt.ac.lk/handle/123456789/6792 2023-01-01T00:00:00Z http://repository.rjt.ac.lk/handle/123456789/6791 මහනුවර රාජධානි සමයේ රජගෙදර සූපශාස්ත්‍ර පිළිබඳ විමර්ශනයක් ගුණරත්න, ශ්‍යාමලී; සමරකෝන්, අජන්ත; මැණිකේ, එල්.එම්.අනෝමා පද්මිණි Sun, 01 Jan 2023 00:00:00 GMT http://repository.rjt.ac.lk/handle/123456789/6791 2023-01-01T00:00:00Z http://repository.rjt.ac.lk/handle/123456789/6790 The Study on Plaster Materials: Special Reference to Rajagala Cave Dwellings Abeynayake, M.D.I.K.; Hettiarachchi, K.; Alexander, K.M.; Thantilage, A.; Senanayaka, J.; Vithanage, I.; Baduraliya, G.T. Rajagala is one of the cave-based monasteries, where inhabited by more than a hundred monks from the 2nd century to the 11th century AD, those who practiced meditation in the caves, had done certain construction work to make suitable living place. Some ancient construction works are still visible. This study was conducted to understand the diversity of the construction materials used, and to determine whether there was any guidance from Vinaya Pitaka, it also, emphasized the plaster materials that had been used to construct different caves, particularly eight caves, and plaster sample materials were analyzed by using analytical methods such as microscopic observation, chemical, particle size, cross-section, and Fourier transform Infrared Spectroscopic analysis (FTIR). Furthermore, had done cross reference with literary sources such as Pali Vinaya Pitaka. According to the results, the plasters were frequently made with clay and sand while floor plaster consisted of lime and sand with different ratios. In addition, organic materials such as paddy husk and charcoal particles were identified. The use of both sorted and unsorted sands was observed. In some cave plasters, a charcoal layer had been applied to make a blackish appearance, there were some remaining pigments mainly red and yellow ocher applied on a lime layer, which had been decorated with some paintings. The study identified that the use of the materials they applied for the construction work was to some degree aligned with the code of discipline, particularly in the Senasanakkandaka in Chullawagga in Buddhist doctrine Sun, 01 Jan 2023 00:00:00 GMT http://repository.rjt.ac.lk/handle/123456789/6790 2023-01-01T00:00:00Z