Abstract An SHS-CFSHS X-joint is fabricated by welding two square hollow section (SHS) braces to a concrete-filled square hollow section (CFSHS) chord. In this paper. the stress concentration factors (SCFs) of SHS-CFSHS X-joints are investigated through experimental tests and finite element analysis (FEA). with the hot spot stress method serving as the analytical approach. https://parisnaturalfoodes.shop/product-category/super-lysine/