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# Geometric imperfections: the inclination θi

## 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"); } }; });  5.2 (5)

Imperfections may be represented by an inclination, θi, given by:

 θi = θ0⋅αh⋅αm (5.1)

where:

θ0
is the basic value, see § 5.2 (5)
αh
is the reduction factor for length or height: αh = 2/√l ; 2/3 ≤ αh ≤ 1
αm
is the reduction factor for number of members: αm = √0,5(1 + 1/m)
l
is the length or height [m], see § 5.2 (6)
m
is the number of vertical members contributing to the total effect, see § 5.2 (6).

This application calculates the inclination θi from your inputs. Intermediate results will also be given.

Input
m

Output
αh
αm
the inclination θi