2Department of Civil Engineering, Andhra University, Andhra Pradesh, India
3Department of Civil and Environmental Engineering, University of Alabama in Huntsville, Huntsville, AL 35899, USA
Abstract
This study looks at the first automated production of Light Gauge Steel (LGS) in Afghanistan using the FRAMECAD F450iT machine. This was accomplished despite security constraints that prevented a support team from accompanying them to Afghanistan. Commissioning on-site in Kabul was performed independently, and an accuracy of approximately ±1 mm was achieved following intense training in Dubai, UAE. Seven pilot projects in Badakhshan Province, a high-altitude seismic region (Ss = 111%, S1 = 58) located on the Tajikistan border, covering a total area of 2,910 m², were completed. The projects consisted of three 370 m² buildings and four 450 m² buildings, which were expected to be completed in late 2017. To resist the high seismic demand, a hybrid system comprising a hot-rolled steel structure and LGS frames was conceived to ensure the best compromise between structural performance and construction economy. Compared to cast-in-place concrete structures, an economic analysis showed a 24% cost savings with consistent performance across various task types. The decrease in weight (94.3 kg/m² > 350 kg/m²) resulted in a 32% reduction in the transportation cost. A Pearson correlation analysis of the weight-transport link revealed significant (p < 0.01) benefits across seven project datasets (r = 0.89). The paper outlines the resolution of obstacles including 350 kilometers of mountainous trekking, absence of mobile connectivity, and regulatory impediments. The results indicate that LGS can be utilized in challenging environments. The principal outcomes encompass established seismic resilience (with safety factors between 1.18 and 4.40), the transfer of expertise to fifteen proficient technicians, and the potential for replication in analogous contexts globally.