Asian Jr. of Microbiol. Biotech. Env. Sc. Vol. 16, No. (1) : 2014 : 215-220 © Global Science Publications ISSN-0972-3005 1. Ph. D student, 2. Assistant Professor *Corresponding author’s email: Mohammad Pir Mohammadi, E-mail: arcmpm@yahoo.com, Mobile: 0060177217475 Article-35 GGDM MODEL ON VALIDATION OF THE INTERIOR BUILDING LAYOUT DESIGN PARAMETERS TOWARDS ENERGY EFFICIENCY AND USER COMFORT MOHAMMAD PIR MOHAMMADI 1,* , ABDULLAH SANI AHMAD 2 , GURUPIAH MURSIB 3 MOHSEN ROSHAN 1 AND MAHDI TORABI 1 1 Department of Architecture, Faculty of Built Environment, Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Malaysia 2 Department of Architecture, Faculty of Built Environment, Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Malaysia 3 Department of Architecture, Faculty of Built Environment, , Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Malaysia (Received : 14 September, 2013; accepted : 21 October, 2013) Key words: Energy Efficiency, User Comfort, Ground Group Decision Making Model Abstract - Collective decision making model emerges to be applied in the cases where decision makers are not capable to seat in a meeting. Grounded Group Decision Making (GGDM) is unique since collective decision making aggregated by cross evaluation of decision makers in GGDM process. The GGDM in this study is applied to validate the uncertainty involved in validation of the interior building layout design parameter towards energy efficiency and comfort strategies. This problem is applied as illustration of applicability of GGDM in establishing a benchmark for evaluation of students in energy efficient architectural design. First a literature review and relevant definition to each interior layout design parameter is presented. Second, a GGDM validation study conducted amongst twenty lecturers and professional practitioners (industrial collaborators of university) in Faculty of Built Environment, Universiti Teknologi Malaysia. In result of the study four parameters are validated and rated respectively. In implication of specific result of this study, these are useful for researchers in enhancement of Automated Computer Aided building Design towards auto evaluation of students drawing in consideration of comfort and energy efficiency. INTRODUCTION Parallel consideration of energy efficiency and comfort in building architecture is a contribution of sustainable building concept (Majid et al., 2012). Researchers in architecture established this sustainable concept since early 80’s (Majid et al ., 2013). Hence consideration of energy efficiency and comfort by design in building is a research domain boosted in university lectures. Obvious uncertainty involves with amount of efficiency in energy use and user comfort derived from divers design decision making. This brings iteration in design, and causes to time consuming and expensive design. Study aims to reduce the uncertainty involved in term of comfort and energy efficiency by identifying building layout design parameters and rating the parameter in this regards. The reduction of this uncertainty directly involves in accurate assessment of students in term of knowledge in energy efficient architecture. First a literature review and relevant definition to each interior layout design parameter is presented. Second, a GGDM (Grounded Group Decision Making) validation study conducted amongst fifteen lecturers in Faculty of Built Environment, Universiti Technologi Malaysia. Discussion on finding is presented lately in the paper. INTERIOR LAYOUT DESIGN PARAMETER Design decision making in building design in this