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["59 - Epaisseur de vitrage 2013 "]
["(Extrait de NF DTU 39 P4 de juillet 2012)"]
[]
["Pvent",1800,"Pa","(2 exemples e.nom.min. : 3,6mm à 1400 Pa et 4,8 à 2500)"]
["L = ",2,"l = ",0.6000000000000001,"L/l = ",3.333333333333333]
["e1 = ",4.040610178208843,"feuillures 4 côtés et L/l > 2,5"]
[]
[null,"ei","ej"]
["eij > e1  => ",4.1,4.1,"(si double vitrage)"]
[]
["c = ",1," = 1 ou  0,9 si rez-de-chaussée et < 6m"]
["E1 = ",1.6,"1,6 pour double vitrage"]
["E3 = ",1,"1 pour verre recuit (basique)"]
[]
["er = (ei +ej) / (0,9 xE1 xE3)",null,5.694444444444443,null,"double vitrage simples"]
["er* = ",null,4.1," * Si eR est supérieur à l’épaisseur d’un seul composant du "]
["er > e1 x c ?",null,true,"  vitrage, eR est pris égal à l’épaisseur de ce seul composant."]
[]
["er = e / E3",null,4.1,null,"vitrage simple monolithique"]
["er > e1 x c ?",null,true,"Attention :","l max","e min"]
[{"$nulls":4},0.66,3]
[{"$nulls":4},0.92,4]
["Flèche",{"$nulls":3},1.5,5]
[" = a x (P/1,5) x (b^4/ef³)",null,"(b=l avec feuillure 4 côtés)",null,2,6]
["l /L",0.30000000000000004,null,null,3,8]
[" a =",2.1,"(E=70GPa)"]
[]
["double vitrage :"]
["ef = ",5.124999999999999]
[" f =",2.426185110488823,"< (b/60)",10.000000000000002,true]
[null,null,"< 30mm",30,true]
["simple vitrage"]
["ef = ",4.1]
[" f =",4.738642793923482,"< (b/60)",10.000000000000002,true]
[null,null,"< 30mm",30,true]