|
Uniformly Loaded Simple Beam First,is the beam strong enough that it doesn't fail by the fibers on the bottom being torn apart, a fiber failure. Second, is the beam stiff enough that there will not be excessive deflection. A bouncy floor, cracked tile or plaster would be examples of this. Third, is the beam strong enough that its fibers don't slip past one another, bend a magazine and watch the pages slide past one another. This is a horizontal shear failure. This calculator is for timbers 5x5 and larger and differentiates them as "Beams and Stringers" or "Posts and Timbers" "Beams and Stringers" are 2" or more greater in depth than width. The calculator was created using Javascript on a Windows browser using standard engineering formulas. Please check compatability on your browser by performing the following check. Under "Total Load" enter 2300 Under "Dead Load" enter 400 Under "Span" enter 144 Under "Width" enter 5.5 Under "Depth" enter 7.5 Under "Species" click Douglas Fir #2 B+S Click "Show Result" It should pass in all 3 catagories. Change the total load to 2400, Bending and Deflection should fail. Set Total Load back to 2300 and change Dead Load to 300, Deflection only should fail. Set Total load to 9300 lbs and span to 36", Shear only should fail User accepts ALL responsibility for their use of this calculator. |