Span 6 meters, 5 meters deep into the terrace, with steel frames from 4CM thick wood, used as light warehouse, I do not know what kind of I-beam, how layout?
No problem. Remember to fill the joint of the I-beam and the wall with concrete, and connect the I-beam and the board together to make sure the 100% is safe!
With 10# I-beam, gb. Tile along the deep direction, the distance between 40-60 cm (see the strength of the wood you use, if it is a good board, relatively strong, that can take 60 cm), and then screw the wood and I-beam links.
