For framing systems which consists of isolated beams or a network of beams it is sufficient to carry out simple, first-order elastic analysis as long as the axial compressive forces in the beams are relatively small: say, less than 15 % of the nominal axial capacity of the member. For such members there is no need to amplify the bending moments. If a beam is subject to significant axial compressive forces, the moment amplification method will have to be applied.