Deflection of Beams

Question

How do we find the relevant boundary conditions when finding deflection of beams using double integration method?

Answer 1

Boundary conditions are what's going on in the beam at the ends... if it is a SSB, then the moments are 0 at both ends, ... whereever the beam is supported (at both ends if SSB, at the wall end if cantilevered, etc. ) the deflections are 0 at those points. if the beam is cantilevered, or supported midway somewhere, then there is no internal shear past the last load force to the unsupported end. Etc.