Rebar anchorage length (Eurocode 2)
Calculate the anchorage length of a reinforcing bar to Eurocode 2 (§ 8.4): bond stress, basic anchorage length, minimum length and design length.
What the sheet calculates
- Ultimate bond stress fbd
- Basic required anchorage length lb,rqd
- Minimum anchorage length lb,min
- Design anchorage length lb,net, with the α coefficients and the As,req / As,prov ratio
Worked example
Calculated by the BÉTONIQ PRO engine with the inputs below. It is the same working as in the software and in the Word calculation report.
The calculation output is in French, as in the software.
Inputs
- Résistance béton (plage EC2 usuelle)fck
- 25 MPa
- Limite élastique acierfyk
- 500 MPa
- Diamètre barreφ
- 12 mm
- Section requise
- 3 cm²
Détail du calcul
| N° | Étape | Valeur | Unité |
|---|---|---|---|
| 1 | Contrainte d'adhérence fbd | 2,693 | MPa |
| 2 | Longueur de référence lb,rqd | 484 | mm |
| 3 | Longueur minimale | 145 | mm |
| 4 | Longueur d'ancrage lb,net | 484 | mm |
Résultats
- fbd
- 2,693
- Lb rqd
- 484,3 mm
- Lb min
- 145,3 mm
- Lb net
- 484,3 mm
- α
- 1
Avertissement : Longueur d'ancrage EC2 §8.4. α = produit des coefficients de forme/enrobage α1..α5 ; fournir `alpha` directement, ou `geometrieAncrage` pour un calcul détaillé (validé chiffre pour chiffre contre un classeur de référence, cas barre droite non soudée).
Other common calculations
- Pad footing design under a column (BAEL 91)
- Strip footing design under a wall (BAEL 91)
- Column pre-sizing from tributary area
- Reinforced concrete beam design (BAEL 91)
- Solid slab spanning between two supports (BAEL 91)
- Straight reinforced concrete staircase design (BAEL 91)
- Reinforced concrete retaining wall stability
- Load takedown on a column
- Footing bearing capacity from pressuremeter tests (Fascicule 62)