Abstract
This paper deals with the analysis of irregular rigid frames with rigid zones by moment distribution. The soltion has been obtained by the use of the principle of virtual work, also by the analysis of moment distribution applied to rectangular rigid frames. The procedure is to start by calculating the coefficients proper to the frames and then to repeat the computation by these coefficients until the end moments finally reach their values required. This method will be advantageous where the members of the frames connecting any rigid zone do not intersect one point.
