Bricks, Masonry, Asphalt and Concrete - conecting I-Beam on top of blocks???

The 2 30x12 concret blocks dugouts are done. now time for a roof. We are wanting to fasten a 30' I beam on top.
Holes punched in the beams for roof studs to be set.
This way there are no poles in dugout holding up the roof.

I called the local company who is good about donateing stuff. They said they would donate 2 Ibeams. There had to be steel plates concreted in on top of the blocks walls... Then the beams would be welded on top to make secure. We talked breifly
he said he would get with me on the plates to be set.. My block guy is about done and these plates need to be done.

I take it you fill the bocks up and then
put a plate with rods that attach to the
concrete.
Con someone explain more about this.
Do you have a pic that I can view.

Tks
Fatdaddy
Tenn

I have seen this done various ways. One is to do it the way you mentioned, with a steel place cast into the filled block. The other is the weld an L-bracket to the bottom of the I Beam and then attach the bottom of the bracket to the hollow or filled block. Attachment can be done with sleeve anchor or adhesive anchors with screen tubes into the hollow CMU or if the block is filled, use expansion stud anchors.

I'd stay away from the anchors unless you've already filled the block.

Run rebar ALL the way down the block wall and fill the block with concrete using a fine gravel in the mix. Then weld the rebar to the beam.

You want as much strength as you can get to prevent the roof lifting in the wind.

You're basically building an airplane wing with the roof, and if the wind cuts across it, it WILL produce enough lift to take the entire roof off.

We built one about the size you describe using a wood beam instead of steel back when I taught voc school as a class project. Tied the end fairly decently to the wood top plate on the block and used two suport poles in the center anchored in concrete and lag screwed into the beam at the top.

Wind came thru one day and lifted the entire roof in one piece and set it down about 20' behind the dugout. Believe it or not, it didn't damage the roof, or the block walls !

Luckily, NO ONE was there when it happened or they could have been killed graveyard dead.

Tie it down a LOT better than you think it needs :)

I like the weld to the beam.
I work in a steel mill and might get them
some 19 rebar to weld about 3' long.

In each of the 30' dugouts 3 blocks from the top and sides I turned 8 blocks side ways for wind to escape. I know if it is a
stout wind it would get anyway..

At the bottom of the wall & pad
I have 6 5"x5" for water drain and wind
vent.

Dave