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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
Do you have any pictures you can share with me?
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.
Let me run some Steel and also Engineered Lumber options for you. Either option can be wrapped/boxed in with wood of your choice.
I looked at steel options and they are all very heavy.
I also looked at using two Engineered Lumber members as the two sides of a box. You can put in intermediate blocking to form your box beam and then wrap it with thin wood vernier.
I can give you an engineered wood option for your 27’ clear span faux beam:
Double 1-3/4” x 9-1/4” Versa-Lam 2.0 2800 DF
This double beam will have less than ½” of deflection at midspan
These are Boise Cascade products and you can go to the following link to find distributors in your area.
You will need to have a local engineer detail your connections.
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Let me know if you have any more questions