Krishanu Roy
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View article: Urban Heat Island Mitigation by LEED and BIM Integration—A Review
Urban Heat Island Mitigation by LEED and BIM Integration—A Review Open
Rising temperatures are one of the most severe consequences of climate change, and the built environment plays a significant role in exacerbating heat, particularly in urban areas. In densely populated cities with hot climates, buildings r…
View article: Investigation of cold formed steel angle compression through high throughput design FEA and machine learning
Investigation of cold formed steel angle compression through high throughput design FEA and machine learning Open
This research investigates the finite element analysis (FEA) of cold-formed steel (CFS) L-columns with pin-ended supports under compression. The study involves a comprehensive parametric analysis with 110 FE models to assess the effects of…
View article: Effect of Protective Coatings on Post-Fire Performance and Behavior of Mild Steel-Based Cold-Formed Steel Back-to-Back Channel Columns with Bolted Connections
Effect of Protective Coatings on Post-Fire Performance and Behavior of Mild Steel-Based Cold-Formed Steel Back-to-Back Channel Columns with Bolted Connections Open
This study investigates the buckling performance of built-up cold-formed steel (CFS) columns, with a focus on how different thermal exposures and cooling strategies influence their susceptibility to various failure mechanisms. Addressing t…
View article: Life Cycle Assessment of a Structural Insulated Panel Modular House in New Zealand
Life Cycle Assessment of a Structural Insulated Panel Modular House in New Zealand Open
Innovative solutions are essential to meet the increasing demand for housing in New Zealand. These innovations must also be sustainable, given the significant contribution of the building and construction sectors to global carbon emissions…
View article: Effect of Stiffeners on the Axial Strength of Face-to-Face Unequal-Angle Cold-Formed Steel Columns
Effect of Stiffeners on the Axial Strength of Face-to-Face Unequal-Angle Cold-Formed Steel Columns Open
Cold-formed steel (CFS) unsymmetrical angles are increasingly used in structural applications such as portal frames, roof trusses, and transmission towers. However, research on built-up face-to-face unsymmetrical CFS angle columns (FFUACs)…
View article: Investigation on Flexural Behavior of Galvanized Cold-Formed Steel Beams Exposed to Fire with Different Stiffener Configurations
Investigation on Flexural Behavior of Galvanized Cold-Formed Steel Beams Exposed to Fire with Different Stiffener Configurations Open
Cold-formed steel (CFS) sections, increasingly favored in the construction industry due to their numerous advantages over hot-rolled steel, have received limited attention in research concerning the flexural behavior of galvanized iron (GI…
View article: Moment Capacity of Bolted-Side Plate for the Eaves Joint of Nested Tapered Box Beam Portal Frame
Moment Capacity of Bolted-Side Plate for the Eaves Joint of Nested Tapered Box Beam Portal Frame Open
The joints of cold-formed steel (CFS) portal frames with box sections are primarily formed either through stiffened welded connections or by bolted end plates, which typically involve costly full penetration butt welds. In New Zealand, CFS…
View article: Simplified Direct Strength Method for the design of cold-formed steel channels with circular web openings under two-flange loadings
Simplified Direct Strength Method for the design of cold-formed steel channels with circular web openings under two-flange loadings Open
Previous studies have put forward reduction factor equations to determine the web crippling strength of cold-formed steel (CFS) channels with circular web openings. However, these equations overlook vital parameters such as material yield …
View article: Flexural Behavior of Galvanized Iron Based Cold-Formed Steel Back-to-Back Built-Up Beams at Elevated Temperatures
Flexural Behavior of Galvanized Iron Based Cold-Formed Steel Back-to-Back Built-Up Beams at Elevated Temperatures Open
Cold-formed steel (CFS) sections have become popular in construction due to several advantages over structural steel. However, research on the performance of galvanized iron (GI)-based CFS under high temperatures, especially regarding its …
View article: Moment capacity of perforated cold-formed aluminium channels–Tests, analysis, and design
Moment capacity of perforated cold-formed aluminium channels–Tests, analysis, and design Open
This paper investigates the moment capacity of perforated cold-formed aluminium alloy (CFAA) channel sections through a combination of experimental and numerical studies. In total, 12 new experimental tests were conducted on CFAA with diff…
View article: Axial capacity of a novel cold-formed steel swaged section: Experimental tests and design
Axial capacity of a novel cold-formed steel swaged section: Experimental tests and design Open
This paper reports a total of 101 experimental results on the axial behaviour of CFS columns having a swaged section at the end or in the middle of channels under a fixed-fixed boundary. For comparison, the equivalent CFS columns with plai…
View article: Structural behaviour and capacity of cold-formed steel channel sections with elongated edge-stiffened and unstiffened web holes under compression
Structural behaviour and capacity of cold-formed steel channel sections with elongated edge-stiffened and unstiffened web holes under compression Open
Over the past decade, cold-formed steel (CFS) channel sections with edge-stiffened circular web holes have been developed and are now widely used in New Zealand. Previous studies on axial compression have demonstrated enhanced axial capaci…
View article: Appraising the Feasibility of 3D Printing Construction in New Zealand Housing
Appraising the Feasibility of 3D Printing Construction in New Zealand Housing Open
The construction industry in New Zealand is significantly impacted by the importance of housing, particularly as urbanisation continues to grow in major cities. Modern construction methods, such as offsite construction and building automat…