Eurocode calculators — Dutch National Annex
Structural design, made easy.
Each calculator shows every step: the clause, the formula, the numbers substituted and the Dutch National Annex values it used. Values not yet verified by the engineer are marked ⚠.
Open the interactive beam calculator →
Steel beam
Free steel beam calculator for continuous beams up to 5 spans: bending, shear, lateral-torsional buckling with the Dutch NB method and deflection, with every step and clause shown.
Reinforced concrete beam
Free RC beam calculator for continuous beams up to 5 spans: cover, bending, shear and detailing rules to Eurocode 2 with the Dutch National Annex, with every step shown.
Timber beam
Free timber and glulam beam calculator for continuous beams up to 5 spans: bending, lateral-torsional buckling, shear, bearing and deflection with creep, Eurocode 5 with the Dutch NB.
RC section in bending
Free calculator for the ULS bending resistance M_Rd of a rectangular reinforced concrete section with the rectangular stress block, Eurocode 2 with the Dutch National Annex.
Concrete cover
Free calculator for the nominal concrete cover c_nom from exposure class, design life, concrete class and bar diameter, Eurocode 2 with the Dutch National Annex.
Concrete properties
Free calculator for concrete properties per strength class: f_ck, f_cm, f_ctm, E_cm, strains and the design strengths f_cd and f_ctd with the Dutch NB factors.
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