The Egyptian Code for concrete structures (ECP 203) provides clear guidelines to ensure that slabs, columns, and footings can safely resist applied loads. This Excel sheet implements shear checks (one-way and punching shear), torsion design for beams, and combined shear-torsion interaction checks — helping structural engineers verify that their designs meet Egyptian Code requirements efficiently.
ECP 203 Shear Design Overview
Shear failure in reinforced concrete is a brittle failure mode that must be prevented through proper stirrup design. ECP 203 follows a similar philosophy to ACI 318 but uses Egyptian-specific partial material factors and slightly different formulas calibrated to local construction practice. The code distinguishes between:
- One-way (beam) shear: Applicable to slabs, beams, and the wide direction of footings
- Two-way (punching) shear: Critical at column-slab and column-footing interfaces
Punching Shear Design per ECP 203
Punching shear (also called two-way shear) governs the design of flat slabs and column footings. The critical perimeter is taken at a distance d/2 from the face of the column, and the punching shear stress is compared to the permissible concrete punching capacity. If the punching shear demand exceeds the concrete capacity, shear reinforcement (studs, stirrups, or shear heads) must be provided.
Torsion Design per ECP 203
Torsion occurs in edge beams supporting one-sided slabs, spandrel beams, curved beams, and beams receiving eccentric loads. ECP 203 requires checking both the torsional cracking threshold and the combined shear-torsion interaction. Closed stirrups must be provided if the factored torsional moment exceeds the threshold torsion Tcr.
What This Sheet Computes
- One-way shear capacity and required stirrup spacing in beams and slabs
- Punching shear stress at column-footing or column-slab interface
- Threshold torsion and torsional reinforcement requirements
- Combined shear + torsion interaction check
- Longitudinal reinforcement for torsion (additional bars required beyond flexural steel)
Download the Egyptian Code Shear and Torsion Sheet
This sheet is an essential tool for structural engineers practising in Egypt who need to perform rigorous shear and torsion checks on concrete members per ECP 203. The automated check format reduces design time significantly compared to manual code look-up and calculation. Download the free Excel sheet below.
