I can help
Can you take a look at the following link and answer the questions at the bottom of the sheet? Your answers will allow me to accurately model the loading and size your beam. Thanks
Sorry for the huge delay. I was having major internet issues and had to have Verizon come out and replace my can-tenna. I am looking at your information right now.
I’d like to point out that a Professional Engineer’s standard of care typically includes a site visit to assess field conditions and get an overall understanding of the structure. This can obviously not be accomplished through the internet. The information provided here is meant for planning purposes only (general sizing and budgeting) and is based on the information provided by you. All loading cases considered are for vertical loads only, no lateral analysis has been completed. The information should be verified by a professional engineer who can visit the site to ensure that potentially important information has not been overlooked or omitted.
You can use a W6x20 (50 ksi) steel beam for your 10’ span beam. The beam is 6” wide and 6.25” deep. It weighs 20 pounds per foot of beam length.
Your 4" square steel columns will work fine.
You will need to check to make sure you have column supports in the basement, directly below your new 4x4 columns on the 1st floor. You should not add large point loads in the span of the existing 8"x8" basement beam.
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