Limitations (concrete beam: ACI 318)
The following general exclusions apply.
The current release will not:
- redistribute moments
- design beams with reinforcement made up of bundled bars
- design beams for axial load
- design beams for minor axis bending and shear
- design beams as “deep beams” - beams classified as “deep” are designed as if
they are regular beams and a warning is displayed.Note:
Deep beams according to ACI 318 are:
(a) Members with clear spans equal to or less than 4 times overall member depth
(b) Members with concentrated loads within twice the member depth from the support
- design in lightweight concrete
- design with coated reinforcement
- design with stainless steel
- design prestressed concrete
- design structures subject to very aggressive exposure
- design watertight structures
material limitations for concrete:
- for structural concrete compressive strength of concrete fc' shall not be less than 17 MPa (2500psi)
- durability requirements are not implemented
material limitations for reinforcement:
- the values of specified yield strength of reinforcement; fy and fyt used in calculations shall not exceed 550 MPa (80000psi)
- specified yield strength of non-prestressed reinforcement; fy and fyt shall not exceed 420 MPa (60 000 psi) in design of shear or torsion reinforcement
- wire reinforcement design is not implemented