A pre-engineered metal building has been damaged by an accidental explosion/fire event. The main rigid frame located directly adjacent to the blast forces is also the building's endwall. This endwall main rigid frame also has two endwall columns. The main steel rigid frame rafter exhibits distortion in the top flange element where the endwall column is attached to the web of the main steel rigid frame rafter web element. The distortion resembles a cup shape and is localized to only a small area....approximately 6" in length. The web in this area is also slightly distorted. My thoughts are to reinforce the top flange of the rafter using a new flat steel plate of sufficient thickness and width to bridge across the distorted area. This new plate would be welded to the top flange. Also, my thoughts are to reinforce the web with new steel plate stiffeners welded to the existing web element.
Has anyone encountered this type of situation? If so, can you give some guidance. I would welcome any and all input. Does this approach sound reasonable? Thanks in advance for your input.
Has anyone encountered this type of situation? If so, can you give some guidance. I would welcome any and all input. Does this approach sound reasonable? Thanks in advance for your input.