Required Size Steel Beam For This Situation

Originally Posted by Jaxyaks

If I'm doing something out of the ordinary as you are doing yes we most certainly do. We don't build many decks as a matter of course, and certainly don't substitute steel to use fewer supports that often, so I would have an engineer verify. Same way I have them verify any questionable spans or support removal in a house. I don't like to guess and be questioned if an engineer was consulted it anything turns out wrong. It's pretty easy, call your engineer give em the specs, or tell him what you were thinking of doing and get a verification. We contact ours once a week depending on what projects are going on at the time

Originally Posted by BCConstruction

Well for one im not new and 2 im looking for span tables. Why would i need an engineer for that. If the span tables say i cant span 27ft but i can span 22 then i will add a 3rd post.

Do you get an engineer when you use wood span tables? Thought not

Originally Posted by slowsol

I was pointing out the irony of the situation. Obviously I know you're not new here. That was the point of my post.

Let me know when you find those steel I beam span tables for joist loading on a deck.

Originally Posted by BCConstruction

How do you know it's out of the ordinary until you know the spec's of the material. If the company who makes the steel says it's ok then why would you need to question it. Do you get an engineer to check when you use a new fastener on a deck. No of course not as you trust that the company who makes the products and been honest about it being tested to the loads it's rated to handle.

Originally Posted by Jeff G

See if this is any help. The feller is a PE and has a good app ($3.99) for your phone to calculate spans for steel beams of various make and model:

http://www.constructionknowledge.net...nding_page.php

Originally Posted by BCConstruction

That looks real handy but i need something from the maker of the steel to give to building department. I have the joist tables which they will allow but not the beam tables.

Originally Posted by Jaxyaks

You made it sound like you were trying to figure out how to get away with using lees support than you normally would use by using a beam instead of something that is usually done another way. What is BS as you say is that you ask opinions and advice and bash ones given.

If you want an engineers opinion on what to use let me know all pertinent information and I will gladly run it by mine.

Originally Posted by Jeff G

Gotcha.

I assume you've had no luck contacting the manufacturer?

Originally Posted by BCConstruction

They are not I beams. They are LG steel beams.

Originally Posted by RobertCDF

I haven't found a beam span chart yet, sorry. My building department requires an engineers stamp for it anyways so I don't even bother trying to figure it out.

For your plan of 2 posts with that span, you'll want a wide flange beam. To do it out of light gauge might be possible but it's probably pretty close to the max. Drop a post in the middle and it's easy.

Originally Posted by Anti-wingnut

You gotta explain that one

Originally Posted by hdavis

If you can figure out this table, it has the answer:

http://mercypleasetw.weebly.com/uplo...88483_orig.jpg

You'll still need an engineer for the joist to beam and beam to post connections.

Originally Posted by Anti-wingnut

I'm lost. What are you asking anymore? The above photograph is steel studs, don't you want to know about the I or W they land on? The type of joist doesn't matter, then could be wood, MS or pan decking.

Originally Posted by BCConstruction

That's one of the ones i found but only made about 75% sense. Be nice to get the beam table from same people as joist table.

Originally Posted by Anti-wingnut

The engineers earn their keep on the 25%

Originally Posted by BCConstruction

WTF is your fascination with engineers. Give it a ****ing rest.