G.G. ARIDRU AND J.L. DAWE
An evaluation of axial and flexural rigidities of concrete masonry walls is very important for calculations involving axial and ultimate moment capacities as well as lateral deflections. Currently approximate and empirical methods are used to evaluate these parameters and to date there is no good agreement between theoretical and experimental results. Preliminary results of effective flexural rigidities of short concrete masonry walls based on strain measurements on the surface of these walls are presented and discussed. Results indicate an exponential nature of the relationship between total applied moment and effective flexural rigidity for the heights of walls tested. Complete results of the experimental study will be published in future papers.