<p><em>Box-shaped buildings covered by glass and minimal shading elements are increasingly common</em><em>, then</em><em> </em><em>causes </em><em>more</em><em> large building energy consumption. This </em><em>research</em><em> aims to analyze the selection of the most optimal glass material for the Undip Integrated Laboratory Building, so that the Overall Thermal Transfer Value (OTTV) of the building is expected to meet the SNI 6389:2020 standard. The research was conducted with an experimental quantitative approach using a spreadsheet calculator OTTV Microsoft Excel of the Ministry of Public Works and Housing. The simulation is divided into three treatment variations, namely variations in BNFL glass thickness; variations in the color of Panasap's glass; and various types of glass. The results show that glass materials with good thermal properties have low shading coefficient (SC), solar factor (SF), and U-value. In addition, the brighter and thicker the glass material, the better the thermal performance. The Undip Integrated Laboratory Building has a total OTTV that meets SNI 6389:2020 standards. However, if viewed partially, the OTTV of the east facade of the building needs to be retrofitted.</em></p>

Global warming is one of the main causes of environmental quality deterioration. This phenomenon is closely related to the acceleration of industrialism and the increased of uncontrolled energy consumption. The building sector donates for 40% of global energy use and is responsible for 30% of the global greenhouse effect. This study discusses the implementation of bioclimatic design criteria in small buildings with Heinz Frick House in Semarang as the object of study. The research was conducted using a qualitative descriptive method. The data were analyzed using bioclimatic design theory in the book “Bioclimatic Housing – Innovative Design for Warm Climates” by Hyde (2012). The results showed that Heinz Frick House building has implemented the bioclimatic design criteria. This residential building applies 6 of 6 principles, 5 of 6 elements, and 2 of 3 bioclimatic design engineering strategies. The building concept “in harmony with the environment and able to support itself” is well realized through adaptive passive design and maximizing environmental conditions, as well as the fulfillment and independent resources processing.Abstrak: Pemanasan global merupakan salah satu penyebab utama penurunan kualitas lingkungan. Fenomena ini erat kaitannya dengan percepatan industrialisme dan konsumsi energi yang semakin tidak terkendali. Sektor bangunan menyumbang 40% dari penggunaan energi global dan bertanggung jawab atas 30% efek rumah kaca global. Penelitian ini membahas penerapan kriteria desain bioklimatik pada bangunan skala rendah dengan objek penelitian adalah Rumah Heinz Frick di Semarang. Penelitian ini dilakukan dengan menggunakan metode deskriptif kualitatif. Data yang telah terkumpul kemudian dianalisis menggunakan teori desain bioklimatik dalam buku “Bioclimatic Housing – Innovative Design for Warm Climates” karya Hyde (2012). Hasil penelitian menunjukkan bahwa bangunan Heinz Frick House telah memenuhi kriteria desain bioklimatik. Bangunan hunian ini menerapkan 6 dari 6 prinsip, 5 dari 6 elemen, dan 2 dari 3 strategi rekayasa desain bioklimatik. Konsep bangunan “selaras dengan lingkungan dan mampu menopang dirinya sendiri” diwujudkan dengan baik melalui desain pasif adaptif dan memaksimalkan kondisi lingkungan, serta pemenuhan dan pengolahan sumber daya secara mandiri.