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# Moment of resistance of an uncracked rectangular section in bending at the SLS, Mct,ser

## 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 b6

The moment of resistance of an uncracked rectangular section in bending at the SLS is calculated according to method b6.

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);
Ec,eff
is the effective modulus of elasticity of concrete;
fct,eff
is the mean value of the tensile strength of the concrete effective at the time when the cracks may first be expected to occur:
fct,eff = fctm or lower, (fctm(t)), if cracking is expected earlier than 28 days;
Asc
is the cross sectional area of the compression reinforcement;
As
is the cross sectional area of the tensile reinforcement;
b
is the width of the concrete cross-section;
h
is the height 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;

This application calculates the moment of resistance Mct,ser from your inputs. Intermediate results will also be given.

Input
GPa
GPa
MPa
cm2
cm2
cm
cm
cm
cm

Output
ne
Ac,eq
cm2
x
cm
Ic,eq
10-3⋅m4

the moment of resistance Mct,ser
kNm