ThisappdeterminesthemomentcarryingcapacityofreinforcedconcretebeamsectionsaccordingtotheAmericanConcreteInstitute(ACI).Theappcanhandlesinglyreinforced,doublyreinforced,andT-sections.Calculationsarebasedonthearticle"STRAINLIMITSvs.REINFORCEMENTRATIOLIMITS-ACOLLECTIONOFNEWANDOLDFORMULASFORTHEDESIGNOFREINFORCEDCONCRETESECTIONS"availableonlineathttp://dx.doi.org/10.1016/j.csse.2015.05.001.TheappusestheUScustomarysystemofunits(ft,in,kips,ksi).