Beams stacked...how to calculate if sufficient size
Beams stacked...how to calculate if sufficient size
(OP)
See the attached picture.
A client is building a 2nd story where he will be able to have chairs/tables for pancake breakfasts. I am trying to determine what kind of load the existing beams can support. He installed a 2x10 with another one directly below it. He will be installing a 2x6 around the column so that will provide bearing underneath the stacked 2x10's. The tributary width is about 7.5'. I typically use the forte software for sizing beams/joists but I don't think this type of construction is an option with that software.
A client is building a 2nd story where he will be able to have chairs/tables for pancake breakfasts. I am trying to determine what kind of load the existing beams can support. He installed a 2x10 with another one directly below it. He will be installing a 2x6 around the column so that will provide bearing underneath the stacked 2x10's. The tributary width is about 7.5'. I typically use the forte software for sizing beams/joists but I don't think this type of construction is an option with that software.






RE: Beams stacked...how to calculate if sufficient size
See this link, it concerns steel, but the principle is the same with wood: Link
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Beams stacked...how to calculate if sufficient size
The two stacked beams on either side of the column act as individual beam members, they are not tied together in such a way as to make them act as a stronger single member. They deflect together and take loads in proportion to their relative bending stiffness, EItop and EIbot.
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
BA
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
Can anyone provide with me a little more detail on how to perform the calculation and determine if the beam can handle the load I mentioned above?
RE: Beams stacked...how to calculate if sufficient size
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
RE: Beams stacked...how to calculate if sufficient size
To determine how much load is transferred to the lower beam, match the beam deflections. The upper beam has the point load applied and the reactions are along the beam (pressure to the lower beam) and point loads at the ends. The lower beam is loaded along the span (sine wave ?) by the upper beam, and reacts this load at the ends.
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