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Discussion Starter · #1 ·
I want to span 17' with a large concrete beam. I plan to insert a heavy duty rebar cone, arch the ends and connect it to two large piers formed with sonotubes resting on wide and thick footers. Everything tied in with #6 rebar. I want the beam to be exposed and am going to use terra cotta concrete to match the walls.
I am a concrete man, but not a structural engineer.
I need to know:

1. What should the dimentions be on the pier and beam
2. What size rebar should be used
3. What size sonotude should be used
 

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To get any technical suggestions you need to include the load the beam will support.

Is the beam holding up a house----roadway----foot bridge?

Add some details,please.
 

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I'd be surprised if you got all that info here...that's how some people make their living. Comparative analysis is one thing, but outright design is another. Please call a structural engineer...
 

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I was hell-bent to form and pour a concrete lintel/beam for 2 - 18' OH door openings on my shop years ago. After paying an architect for the drawings, along with an SE to stamp the beams, I ended off opting for steel I beams with bearing plates welded to the bottom, and "soaps" (narrow block) laid on the plate. The concrete beam was WAY bigger than I expected, and actually more expensive than the steel........
 
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