Structural Engineering
Calculators

Design and check reinforced concrete beams for flexure, shear, and torsion. Covers required reinforcement calculation, capacity checks, and stirrup sizing — all with step-by-step printable reports. Supports ACI 318-25, Eurocode 2, and IS 456:2000 in four independent sub-tools.

One-way slab flexural design and punching shear checks for flat-plate and flat-slab systems. Handles interior, edge, and corner columns with live plan view. Fully implemented for ACI 318-25 (stud rail SSR), Eurocode 2 §6.4, and IS 456:2000.

Generate the P-M_x-M_y interaction diagram for rectangular and circular RC columns under combined axial load and biaxial bending. Includes transverse reinforcement sizing and seismic confinement checks. Available for ACI 318-25, Eurocode 2, and IS 456:2000.

Calculate rebar development length, standard hook embedment, and lap splice length with full step-by-step reports. Covers straight bars, 90° and 180° hooks, and tension/compression splices for ACI 318-25, Eurocode 2 §8.4, IS 456:2000, and TS 500:2000.

Searchable database of standard structural steel profiles — IPE, HEA/B/M, W, HSS, ISMB, ISMC, and more — with full elastic and plastic section properties. Covers EN 10365 (European), AISC (American), and IS 808 (Indian) catalogues, plus a custom section calculator.

Quick-reference table for rebar sizes, cross-sectional areas, and mechanical properties — yield strength, tensile strength, ductility class, and elongation. Covers ASTM A615/A706 (No. 3–18), EN 10080 B400/B500 (6–40 mm), and IS 1786 Fe415–Fe600 grades.

Design properties for all standard concrete strength classes — f_ck, f_cd, f_ctm, E_cm, strain limits, and more. Covers Eurocode 2 (C12/15–C90/105), ACI 318 (3000–10000 psi), and IS 456:2000 (M10–M60) in a single printable reference table.

Cantilever retaining wall stability analysis and reinforcement design. Checks overturning, sliding, and bearing pressure with Rankine or Coulomb earth pressure. Includes surcharge and seismic loads (Mononobe–Okabe) with ASCE 7-16 site-class lookup. Currently implemented for ACI 318-19; Eurocode 2, TS 500, and IS 456 coming soon.