BUILT-UP SECTIONS are structural elements fabricated from hot rolled steel plates that conform to ASTM A 572M Grade 345 type (or equivalent). These plates have a minimum yield strength of 34.5 kN/cm2 (50 ksi), ensuring the sections are strong and durable. The sections consist of flanges welded to the web using a continuous single side fillet weld. This welding process is carried out using an automatic submerged arc welding method, which ensures consistent and high-quality welds. The use of this welding process helps to create strong and reliable connections between the flanges and the web, ensuring the structural integrity of the built-up sections. This method also provides efficiency in fabrication, as it can be automated for large-scale production. Overall, the combination of high-quality steel plates and precise welding techniques ensures that BUILT-UP SECTIONS meet the necessary strength and durability requirements for structural applications.