For full functionality of this site it is necessary to enable JavaScript. Here are the instructions how to enable JavaScript in your web browser.

# Longitudinal reinforcements of a rectangular section in bending at the SLS, Asc and As

## Eurocode 2 - Design of concrete sections \$(document).ready(function () { \$("#mainMenu li#nav-appCate, #mainMenu li#nav-appEC2ds").addClass("active"); var freeExample = \$("#freeExample").length; var proUser = false === true || false === true || freeExample !== 0; if (!proUser) { \$('#Input input').keyup(function(){ \$('#AlertSubscribe').modal(); }); \$('#Input select').change(function(){ \$('#AlertSubscribe').modal(); }); }; var tempInput = \$("#tempInput").text(); if (tempInput != "") { \$("#Input").parent("form").deserialize(tempInput); if (proUser) { \$("#acceptBtn").trigger("click"); } }; });  Method b9

The reinforcements of a rectangular section in bending at the SLS by stress limitation are calculated according to method b9.

The parameters needed for the design are the followings:

Es
is the design value of the modulus of elasticity of the reinforcing steel, see § 3.2.7 (4);
fyk
is the yield strength of the reinforcing steel, see § 3.2.2 (3)P;
k3
is a Nationally Determined Parameter, see § 7.2 (5);
Concrete class: see Table 3.1;
Ec,eff
is the effective modulus of elasticity of concrete;
k1
is a Nationally Determined Parameter, see § 7.2 (2);
b
is the width of the concrete cross-section;
d
is the effective depth of the concrete cross-section;
d'
is the distance from the external compressive concrete to the centre of gravity of the compression steel;
Mser
is the design bending moment under the characteristic combination of loads;
Optimize As: reducing As by calculating Asc if needed.

This application calculates the reinforcements As, Asc from your inputs. Intermediate results will also be given.

Input
GPa
MPa
GPa
cm
cm
cm
kNm

Output
ne
fck
MPa
σc,ser
MPa
σs,ser
MPa
αAB
MAB
kNm
μc,ser
αc,ser
Pivot
αser
x
cm
σsc
MPa
σs
MPa

Compressive reinforcement Asc
cm2
Tensile reinforcement As
cm2