“…Research studies and knowledge of prestressed LWC are, however, very limited, as prestressed concrete construction has mainly involved normal-weight concrete (NWC) (Bennett and Veerasubramanian, 1972;Collins and Mitchell, 1991;Harajli and Naaman, 1985;Mo and Chien, 1993;Taylor et al, 1978;Warwaruk et al, 1962;Wu et al, 2010). In addition, all the design equations used to predict the stress of bonded prestressing strands at the ultimate strength of beams are empirically derived and verified using test data on NWC beams (ACI, 2011;Harajli and Naaman, 1985;Loov, 1988;Skogman et al, 1988). Approximate steel strains are then computed from conditions of compatibility and equilibrium.…”