The following engineering library calculations has been added or enhanced in Tedds 2023. (Note that some features documented below were included in previous updates to Tedds 2022.)

• RC stair design (ACI318), Precast concrete stair design (ACI318)
• Concrete design calculations (ACI318)
• RC beam torsion design (ACI318)
• Retaining wall analysis & design (ACI318/TMS/MSJC)
• Retaining basement wall analysis & design (ACI318)
• Wood member design (NDS)
• Steel joist design (SJI)
• Cold-formed steel joist design (AISI), Cold-formed steel wall design (AISI)
• Wood shear wall design (NDS)
• Batch design (American design)