How do modular prefabricated structures made of sustainable materials (e.g., cross-laminated timber panels, 3D-printed recycled plastics) alter the stress distribution and structural stability of residential housing?

Hasan Onallah

doi:10.36948/ijfmr.2025.v07i05.57617

How do modular prefabricated structures made of sustainable materials (e.g., cross-laminated timber panels, 3D-printed recycled plastics) alter the stress distribution and structural stability of residential housing?

Author(s)	Hasan Onallah
Country	India
Abstract	Buildings use a lot of energy and materials. In 2022, the buildings sector made about one-third of global energy demand and 37% of energy- and process-related CO₂ emissions. Better materials and faster ways to build can help cut this impact.This paper looks at how modular prefabricated homes made from sustainable materials—mainly cross-laminated timber (CLT) and 3D-printed recycled plastics—change stress distribution and structural stability compared with conventional concrete systems. Two basic facts shape the results. First, weight: typical concrete has a density around 2,240–2,400 kg/m³, while CLT products used for design commonly assume about 470–515 kg/m³. Lighter materials lower dead load and can lower earthquake forces because seismic base shear is proportional to the building’s effective weight (V = Cₛ•W).(Engineering ToolBox. (n.d.). Concrete properties: Properties of normal strength Portland cement concrete. The Engineering ToolBox. https://www.engineeringtoolbox.com/concrete-properties-d_1223.html) Second, stiffness and time effects: many recycled-plastic prints have tensile moduli on the order of 2–3 GPa and show creep under sustained load, so they deflect more and need ribs, hybrid frames, or careful load paths. Evidence from recent studies shows that connections govern stress flow in modular systems. Joints can create stress concentrations, but good detailing (e.g., ductile or energy-dissipating links) improves global stability and damage control. At the same time, factory construction can cut material waste and variability; industry surveys report reduced schedules and waste for off-site methods, supporting both quality and sustainability aims. CLT modules change stress patterns mainly by reducing mass (beneficial for seismic demand) and by shifting more demand to connections (requiring robust joint design). Recycled-plastic modules can work when used selectively or in hybrid systems that limit long-term creep and service-deflection risks. Together, these strategies can deliver safe, stable, and lower-carbon homes—if engineers verify joints, stiffness, and long-term behavior with testing and models.
Keywords	modular prefabrication; cross-laminated timber (CLT); recycled plastics; 3D printing; stress distribution; structural stability; base shear; connections; creep; embodied carbon.
Published In	Volume 7, Issue 5, September-October 2025
Published On	2025-10-22
DOI	https://doi.org/10.36948/ijfmr.2025.v07i05.57617

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How do modular prefabricated structures made of sustainable materials (e.g., cross-laminated timber panels, 3D-printed recycled plastics) alter the stress distribution and structural stability of residential housing?

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