Kamanasa Village in Malaka Regency is a vernacular village inherited based on the knowledge and local wisdom of the Lawalu tribe. Kamanasa people obey traditions and customs for obedience to tribal ancestors. The concept of obedience arises in settling cultures, in village spatial planning and residential and material use. The architectural concepts that exist in the village of Kamanasa have ecological characteristics in the form, structure and use of materials, also in the behavior of the Kamanasa people. This study focuses on identifying the economic concepts of Kamanasa vernacular architecture and how the sustainability of ecological concepts is maintained. Field observations and literature studies of ecological design principles were used in this study. The results of the study showed that the vernacular village of Kamanasa applied an ecological concept of architecture in accordance with the principles of ecological design that were inherited through the tradition of building houses, linkages with the environment, and social relations in mutual cooperation. The Kamanasa vernacular village is still supported by aspects of traditional beliefs and norms, so the ecological concept of the Kamanasa vernacular architecture deserves to be an ecological concept of cultural architecture.Keywords: Ecological, Vernacular Architecture, Kamanasa VillageAbstrak: Desa Kamanasa di Kabupaten Malaka merupakan desa vernakular yang diwarisi berdasarkan pengetahuan dan kearifan lokal suku Lawalu. Orang Kamanasa taat tradisi dan adat istiadat demi ketaatan terhadap leluhur suku. Konsep ketaatan muncul pada budaya bermukim, pada tata keruangan desa dan rumah tinggal maupun penggunaan material. Konsep berarsitektur yang ada pada desa Kamanasa memiliki ciri-ciri ekologis pada tata bentuk, struktur dan penggunaan material, juga pada perilaku orang Kamanasa. Kajian ini berfokus pada identifikasi konsep eklogis arsitektur vernakular Kamanasa dan bagaimana keberlanjutan konsep ekologis dipertahankan. Observasi lapangan dan kajian pustaka prinsip-prinsip desain yang ekologis digunakan dalam penelitian ini. Hasil penelitian menunjukkan, desa vernakular Kamanasa menerapkan konsep ekologis arsitektur sesuai dengan prinsip-prinsip desain ekologis yang diwariskan melalui tradisi membangun rumah,  keterkaitan dengan lingkungan, dan hubungan sosial bergotong royong. Desa vernakular Kamanasa masih didukung oleh aspek kepercayaan dan norma-norma adat, sehingga konsep ekologis arsitektur vernakular Kamanasa layak dijadikan konsep arsitektur kiwari yang ekologis. Kata kunci: Ekologis, Arsitektur Vernakular, Desa Kamanasa

White soil is a common material in Timor Island, especially in Kupang, usually molded into bricks without adding sand due to its high sand content which has been recorded to be between 30-65%. This study was, therefore, conducted to determine the effect of adding husk ash and coconut fiber on the compressive strength of white soil bricks mixture using an experimental method. The process involved drying the white soil bricks using winding for 28 days after molding after which the compressive strengths for the coconut fiber with cement and rice husk with cement were measured. The results showed a ratio of 1 coconut fiber to 1 cement produced 7 white soil with compressive strength at 147 kg/cm² while 1.5 rice husk ash to 1 cement produced 7 white soil with 114.3 kg/cm². These were, however, observed to be much higher than the findings of previous studies which used 1 cement to 7 white soil to produce 51.9 kg/cm². This, therefore, means the compressive strength produced in this study exceeds the value for quality 1 bricks based on SNI 03-0349-1989 for loaded and unprotected constructions.