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# Resistance of rectangular solid sections subjected to torsion and shear: the condition for minimum reinforcement

## Eurocode 2 part 1-1: Design of concrete structures \$(document).ready(function () { var freeExample = \$("#freeExample").length; \$("#mainMenu li#nav-appCate, #mainMenu li#nav-appEC211").addClass("active"); 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"); } }; });  6.3.2 (5)

For approximately rectangular solid sections, only minimum reinforcement is required if the following condition is satisfied:

 TEd / TRd,c + VEd / VRd,c ≤ 1,0 (6.31)

where:

TEd
is the design torsional moment
VEd
is the design transverse force
TRd,c
is the torsional cracking moment
 TRd,c = 2 Ak tef,i fctd (6.26) while setting τt,i = fctd

with

Ak
the area enclosed by the centre-lines of the connecting walls, including inner hollow areas, see Figure 6.11
tef,i
the effective wall thickness, see Figure 6.11
fctd
the design tensile strength of concrete, see § 3.1.6 (2)P.
VRd,c
is the design shear resistance of members not requiring design shear reinforcement .

This application calculates the resistance to torsion and shear from your inputs. Intermediate results will also be given.

Input
kNm
kN
kN
MPa
cm2
cm

Output
TRd,c
kNm (6.26)
TEd / TRd,c + VEd / VRd,c
Resistance to torsion and shear
(6.31)