This paper describes the preliminary studies carried out in the scope of an applied
research project for the design and construction of Steel Fibre Reinforced Self-Compacting Concrete
(SFRSCC) grid foundations for single-family houses. Adopting a constitutive model for the simulation
of the post-cracking behaviour of fibre reinforced concrete, and modelling a complete typical singlefamily house by taking into account the soil-structure interaction, it was estimated the post cracking
residual tensile strength for the SFRSCC to be developed. The aimed SFRSCC was prepared in a
concrete mix plant, and standard specimens, ½ scale beam prototypes and a ¼ scale grid prototype
were cast. To take into account, in the design context, the fibre distribution and orientation that can
occur in grid foundations, core samples were extracted from distinct locations and depths in these
beams, and the stress-crack width relationship, σ-w, was experimentally assessed. Based on the
obtained σ-w curves, and using a cross-section layer model, the flexural capacity of the grid
foundation was evaluated. The obtained results show the suitability of SFRSCC for this type of
structures
