The application of cold-formed steel channel sections for portal frames becomes more popular for industrial and residential purposes. Experimental tests showed that such structures with long-span up to 20 m can be achieved when knee brace joints are included. In this paper. the influence of knee brace configuration on the optimum design of long-span cold-formed steel portal frames is ... https://allfixelectricales.shop/product-category/dryer-idler-pulley/