أرسل هذا في رسالة قصيرة: Progressive collapse of steel frames in fire

 _    _      ___     _    _     _____    _    _   
| |  | ||   / _ \\  | || | ||  |  ___|| | \  / || 
| |/\| ||  / //\ \\ | || | ||  | ||__   |  \/  || 
|  /\  || |  ___  ||| \\_/ ||  | ||__   | .  . || 
|_// \_|| |_||  |_|| \____//   |_____|| |_|\/|_|| 
`-`   `-` `-`   `-`   `---`    `-----`  `-`  `-`