I have a "Old Barn" looking Bean 12 x 11 1/2. Not sure of the exact species but it look like a Douglas Fir. The Beam is already installed and is 38 feet long. Beside the end columns, their is (1) additional columns at about 14 feet of one of the end. So, likely a clear span of 13 Feet and 24 feet respectively. (all the columns are also 12x11 1/2)
At this time, it support the front of a mezzanine. The mezzanine itself is 12 feet deep. The floor is not really bouncy -- but their is almost no weight beside the floor structure.
Now, I want to convert the mezzanine to a full second floor. Therefore, the beam will become a mid-point for a 12 Foot wide floor (one side) and a 16 foot wide floor on the others side. Total 28'.
I am planning to demolish the existing mezzanine and use 28 feet I-Joist (suitable for a 16' span). But still using the 12x12 beam as a load bearing for the floor. (it is a very nice looking beam -- nice patina and all).
Design Criteria: I use Live load 40 death load 10. (This is a pole building 38x28... so, the beam does not support anything beside the second level floor)
I am trying to estimate the maximum potential "Clear Span" of this somewhat unknown beam (Said, maybe Douglas Fir). In fact, this is to make a budget because I am convince I will have to replace the concrete floor by a suitable Footing. $$$ Furthermore, if I need to move the existing mid-span column, this will be complicated and expensive.
I did not find on Internet how to calculate for such a large beam.:crying:
At this time, it support the front of a mezzanine. The mezzanine itself is 12 feet deep. The floor is not really bouncy -- but their is almost no weight beside the floor structure.
Now, I want to convert the mezzanine to a full second floor. Therefore, the beam will become a mid-point for a 12 Foot wide floor (one side) and a 16 foot wide floor on the others side. Total 28'.
I am planning to demolish the existing mezzanine and use 28 feet I-Joist (suitable for a 16' span). But still using the 12x12 beam as a load bearing for the floor. (it is a very nice looking beam -- nice patina and all).
Design Criteria: I use Live load 40 death load 10. (This is a pole building 38x28... so, the beam does not support anything beside the second level floor)
I am trying to estimate the maximum potential "Clear Span" of this somewhat unknown beam (Said, maybe Douglas Fir). In fact, this is to make a budget because I am convince I will have to replace the concrete floor by a suitable Footing. $$$ Furthermore, if I need to move the existing mid-span column, this will be complicated and expensive.
I did not find on Internet how to calculate for such a large beam.:crying: