Faculty Publications

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Publications by NITK Faculty

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    Evaluation of embodied energy and operational energy for panelised building system
    (ICE Publishing, 2025) Chippagiri, R.; Gavali, H.R.; Bras, A.; Ralegaonkar, R.V.
    The increasing urban population lead to a housing shortage, mainly for the economically weaker sections. Government has come up with few initiatives to implement rapid construction techniques for these housings. Also, construction is an energy-intensive process, and thus it needs a sustainable and energy-efficient approach in executing the modern building system. Panelised prefabrication is one such proven technique. The present work briefly describes the development of sustainable construction products made from locally available agro-industrial ash (AIA) and evaluating their physico-mechanical and functional properties. Two components: Embodied energies (EE) of AIA-based end-products; and computational modelling for determining the peak cooling loads (PCL) are studied. EEs are evaluated through mathematical expressions and compared with traditional practices. The building model comprising both the developed end-products has 23% and 8% reduced EE when compared with burnt-clay and fly-ash brickworks respectively. A computational study for AIA-based building models is made for evaluating the operational energy through a building information modelling tool. PCLs are extracted for different floor combinations of a three storeyed building located in Nagpur, India. The developed combination of prefab systems is compared with conventional practice: fly ash brickwork with RCC framework, and around 53% reduction in PCL was observed. © 2024 Emerald Publishing Limited: All rights reserved.
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    AN ONTOLOGY-DRIVEN BI-DIRECTIONAL WORKFLOW FOR INTEGRATING PROJECT MANAGEMENT DATA INTO THE IFC STANDARD
    (International Council for Research and Innovation in Building and Construction, 2025) Kone, V.; Mahesh, G.
    The evolution of Building Information Modelling (BIM) towards a data-centric paradigm is often hindered by challenges in semantic interoperability, particularly when integrating project management data with the Industry Foundation Classes (IFC) standard. While IFC enables syntactic data exchange, a persistent gap exists dynamically linking building geometry with the complex, relational information of project schedules, resources, and costs in a semantically consistent, interoperable manner. This paper presents a novel, bi-directional methodology that leverages Semantic Web technologies (RDF, OWL, SPARQL) to address this challenge. The core of the methodology is an ontology-driven workflow that uses two purpose-built ontologies: BIMOnto, a lightweight representation of the building asset derived from if cOWL, and IproK (Integrated Project Knowledge Ontology), which formally structures project management information across schedule, resource, and cost domains. The workflow enables both directions: (1) transforming IFC models into queryable knowledge graphs, and (2) programmatically generating new, enriched IFC models from unified knowledge graphs. This reverse transformation creates native, standards-compliant IFC entities for tasks (IfcTask), resources (IfcResource), costs (IfcCostItem), and their standard relationships (IfcRelAssignsToProduct, etc.), moving beyond custom property sets. The feasibility and effectiveness of this approach are validated through a case study using a multi-story residential building model, demonstrating the successful generation of a verifiable, integrated BIM artifact. The findings show that this ontology-driven framework significantly enhances data integration, creating truly interoperable models where process data becomes a first-class citizen within the BIM environment, advancing the potential for more intelligent, data-centric BIM practices throughout the project lifecycle. © © 2025 The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.