SIST EN 1996-1-2:2005/AC:2011

Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design

(1)P This Part 1-2 of EN 1996 deals with the design of masonry structures for the accidental situation of fire exposure, and is intended to be used in conjunction with EN 1996-1-1, EN 1996-2, 1996-3 and EN 1991-1-2. This part 1-2 only identifies differences from, or supplements to, normal temperature design.
(2)P This Part 1-2 deals only with passive methods of fire protection. Active methods are not
covered.
(3)P This Part 1-2 applies to masonry structures which, for reasons of general fire safety, are required to fulfil certain functions when exposed to fire, in terms of:
- avoiding premature collapse of the structure (load bearing function)
- limiting fire spread (flames, hot gases, excessive heat) beyond designated areas (separating function)
(4)P This Part 1-2 gives principles and application rules for designing structures for specified requirements in respect of the aforementioned functions and levels of performance.
(5)P This Part 1-2 applies to structures, or parts of structures, that are within the scope of EN 1996-1-1, EN 1996-2 and EN 1996-3 and are designed accordingly.
(6)P This Part 1-2 does not cover masonry built with Natural Stone units to EN771-6
(7)P This Part 1-2 deals with the following:
- non-loadbearing internal walls.
- non-loadbearing external walls.
- loadbearing internal walls with separating or non-separating functions.
- loadbearing external walls with separating or non-separating functions.

Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 1-2: Allgemeine Regeln - Tragwerksbemessung für den Brandfall

Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Règles générales - Calcul du comportement au feu

Evrokod 6: Projektiranje zidanih konstrukcij - 1-2. del: Splošna pravila - Požarnoodporno projektiranje

(1)P Ta 1-2. del EN 1996 obravnava projektiranje zidanih konstrukcij za nezgodno izpostavljenost ognju in se uporablja skupaj z EN 1996-1-1, EN 1996-2, 1996-3 in EN 1991-1-2. Ta 1-2. del le prepoznava odstopanja projektiranja pri običajni temperaturi ali njegove dopolnitve.
(2)P Ta 1-2. del obravnava pasivne metode zaščite pred ognjem. Aktivne metode niso
zajete.
3(P) Ta 1-2. del velja za zidane konstrukcije, ki morajo zaradi razlogov splošne varnosti pred ognjem izpolnjevati določene funkcije, kadar so izpostavljene ognju, glede:
- izogibanja prezgodnjemu sesedanju konstrukcij (funkcija nosilnosti bremena);
- omejevanje širjenja ognja (plamen, vroči plini, čezmerna vročina) prek določenih območij (funkcija ločevanja).
(4)P Ta 1-2. del podaja načela in pravila za uporabo za projektiranje konstrukcij za določene zahteve glede na zgoraj omenjene funkcije in ravni delovanja.
(5)P Ta 1-2. del velja za konstrukcije ali dele konstrukcij, ki so na področju uporabe EN 1996-1-1, EN 1996-2 in EN 1996-3, ter so skladno s tem projektirani.
(6)P Ta 1-2. del ne zajema z naravnim kamnom zidanih enot, ki jih zajema EN771-6.
(7)P Ta 1.-2. del obravnava:
- nenosilne notranje zidove;
- nenosilne zunanje zidove;
- nosilne notranje zidove s funkcijami ločevanja ali funkcijami, ki ne ločujejo;
- nosilne zunanje zidove s funkcijami ločevanja ali funkcijami, ki ne ločujejo.

General Information

• Status: Published
• Publication Date: 19-Jan-2011
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• ICS: 91.010.30 - Technical aspects
• ICS: 91.080.30 - Masonry
• Technical Committee: KON - Structures
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 02-Nov-2010
• Due Date: 07-Jan-2011
• Completion Date: 20-Jan-2011
• Directive: 89/106/EEC - Construction products
• Directive: TP001 - Pravilnik o mehanski odpornosti in stabilnosti objektov
• Mandate: M/265 - Mandate to CEN for the conversion of the Eurocodes from ENV into EN concerning the structural and geotechnical design of buildings and civil engineering works
• Mandate: M/BC/CEN/89/11 - Framework mandate to CEN on Eurocode work : execution of a standardization programme on Eurocodes for the structural design of building and civil engineering works
• Ref Project: EN 1996-1-2:2005/AC:2010 - Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design

Relations

• Corrects: SIST EN 1996-1-2:2005 - Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design
• Effective Date: 22-Aug-2009

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Evrokod 6: Projektiranje zidanih konstrukcij - 1-2. del: Splošna pravila - Požarnoodporno projektiranjeEurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 1-2: Allgemeine Regeln - Tragwerksbemessung für den BrandfallEurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Règles générales - Calcul du comportement au feuEurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design91.080.30Zidane konstrukcijeMasonry91.010.30Technical aspects13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 1996-1-2:2005/AC:2010SIST EN 1996-1-2:2005/AC:2011en,fr,de01-februar-2011SIST EN 1996-1-2:2005/AC:2011SLOVENSKI
STANDARD



SIST EN 1996-1-2:2005/AC:2011



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1996-1-2:2005/AC
October 2010
Octobre 2010
Oktober 2010 ICS 13.220.50; 91.010.30; 91.080.30 English version Version Française Deutsche Fassung
Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design
Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Règles générales -Calcul du comportement au feu
Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 1-2: Allgemeine Regeln - Tragwerksbemessung für den Brandfall This corrigendum becomes effective on 27 October 2010 for incorporation in the three official language versions of the EN.
Ce corrigendum prendra effet le 27 octobre 2010 pour incorporation dans les trois versions linguistiques officielles de la EN.
Die Berichtigung tritt am 27.Oktober 2010 zur Einarbeitung in die drei offiziellen Sprachfassungen der EN in Kraft.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Tous droits d'exploitation sous quelque forme et de quelque manière que ce soit réservés dans le monde entier aux membres nationaux du CEN. Alle Rechte der Verwertung, gleich in welcher Form und in welchem Verfahren, sind weltweit den nationalen Mitgliedern von CEN vorbehalten. Ref. No.:EN 1996-1-2:2005/AC:2010 D/E/FSIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 2 1 Modifications to the Foreword Links between Eurocodes and products harmonised technical specifications (ENs and ETAs), 2nd paragraph, replace: "EN 1996-1-1: Common rules for reinforced and unreinforced masonry structures." with: "EN 1996-1-1: General rules for reinforced and unreinforced masonry structures". Links between Eurocodes and products harmonised technical specifications (ENs and ETAs), 2nd paragraph, replace: "EN 1996-3: Simplified calculation methods and simple rules for masonry structures" with:
"EN 1996-3: Simplified calculation methods for unreinforced masonry structures". National Annex for EN 1996-1-2, 2nd paragraph, add a new item at the very beginning of the list: " −−−− 2.1.3(2) Parametric fire exposure;". National Annex for EN 1996-1-2, 2nd paragraph, list, replace "2.2 (2)" with "2.2(2)". National Annex for EN 1996-1-2, 2nd paragraph, list, replace "2.3 (2)" with "2.3(2)P". National Annex for EN 1996-1-2, 2nd paragraph, list, delete the line:
" −−−− 2.4.2(3)
Member analysis;". National Annex for EN 1996-1-2, 2nd paragraph, list, replace "3.3.3.2 (1)" with "3.3.3.2(1)". National Annex for EN 1996-1-2, 2nd paragraph, list, replace "3.3.3.3" with "3.3.3.3(1)". National Annex for EN 1996-1-2, 2nd paragraph, last list entry, replace "constant c" with"constant c". 2 Modification to 1.2 Reference to EN 1996, replace: "EN 1996 Design of masonry structures:
Part 1.1: Common rules for reinforced and unreinforced masonry structures
Part 2: Design, selection of materials and execution of masonry
Part 3: Simplified and simple rules for masonry structures" with: "EN 1996 Design of masonry structures: SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 3
Part 1-1: General rules for reinforced and unreinforced masonry structures
Part 2: Design considerations, selection of materials and execution of masonry
Part 3: Simplified calculation methods for unreinforced masonry structures". 3 Modifications to 1.6 1st paragraph, replace "EN 1991-1-1" with "EN 1996-1-1". List of symbols, delete:
"fb characteristic unit strength". List of symbols, delete: "hef effective height of the wall". List of symbols, replace the definition of “.” with the following one: "the ratio of the applied design load on the wall to the design resistance of the wall;". After the line with "∆t" and its definition, add: " ∆Θ1 average temperature rise of the unexposed side; ∆Θ2 maximum temperature rise of the unexposed side at any point;". 4 Modification to 2.1.2 Paragraph (3), replace "140 °K" with "140 K" and replace "180 °K" with "180 K.". 5 Modifications to 2.1.3 Paragraph (2), in the first bullet point, replace "140°K" with "140 K" and "180°K" with "180 K". Paragraph (2), replace the second bullet point with the following one: " - the average temperature rise of the unexposed side of the construction should be limited to ∆Θ1 and the maximum temperature rise of the unexposed side should not exceed ∆Θ2 during the decay phase.". Paragraph (2), add the following NOTE: "NOTE: The recommended values for maximum temperature rise during the decay phase are ∆Θ1 = 200 K and ∆Θ1 = 240 K. The choice to be made at the national level may be given in the National Annex.". 6 Modifications to 2.4.2 Paragraph (1), 1st line, replace "t=0" with "t = 0". SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 4 Paragraph (3), replace the second paragraph of NOTE 1 with: “The values of partial factors for use in a Country may be found in its National Annex for EN 1990. Recommended values are given in EN 1990. The choice of expression (6.10) or (6.10)a and (6.10)b may also be found in the National Annex for EN 1990.”. 7 Modification to 4.3 Paragraph (4), end of paragraph (4), delete the text "[Rob, deleted render, as it is not considered to be a suitable finish!]". 8 Modification to 4.5 Paragraph (1), replace "the tables, in Annex B" to "Tables B.1 to B.6 in Annex B". 9 Modification to 5.3 Paragraph (5), end of the NOTE, delete the second punctuation sign ".". 10 Modifications to Annex B Paragraph (3), end of the clause, delete "[deleted rendering or plaster again, ref to 4.2(1) is enough]". Paragraph (4), replace "5mm" with "5 mm". Paragraph (4), delete the additional space between "least" and "one". 1st columns of Tables B.1 to B.6, add 6 times "gross dry" before “density”. In NOTE 1 after Table B.6, replace "perods" with "periods". NOTE 4, replace the sections N.B.1 to N.B.5 with the following ones: " SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 5 N.B.1 Clay masonry Clay units conforming to EN 771-1
Table N.B.1.1 Clay Masonry Minimum thickness of separating non-loadbearing walls (Criterion EI) for fire resistance classifications row number material properties:
gross dry density ρ
[kg/m³] Minimum wall thickness (mm) tF for fire resistance classification EI for time (minutes) tfi,d 30 45 60 90 120 180 240 1. Group 1S, 1, 2, 3
and 4 units 1.1 mortar : general purpose, thin layer, lightweight 500 ≤ ρ ≤ 2 400 1.1.1 1.1.2
60/100 (50/70) 90/100 (50/70) 90/100 (60/70) 100/140 (70/100) 100/170 (90/140) 160/190 (110/140) 190/210 (170) Table N.B.1.2 Clay masonry minimum thickness of separating loadbearing single-leaf walls (Criteria REI) for fire resistance classifications row number material properties: unit strength fb [N/mm²] gross dry density ρ
[kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI for time (minutes) tfi,d 30 45 60 90 120 180 240 1S Group 1S units 1S.1
5 ≤ fb ≤ 75 general purpose mortar 5 ≤ fb ≤ 50 thin layer mortar 1 000 ≤ ρ ≤ 2 400 1S.1.1 1S.1.2 α ≤ 1,0 90 (70/90) 90 (70/90) 90 (70/90) 100 (70/90) 100/140 (90/140) 170/190 (110/140) 170/190 (170/190) 1S.1.3 1S.1.4 α ≤ 0,6 90 (70/90) 90 (70/90) 90 (70/90) 100 (70/90) 100/140 (100/140) 170 (110/140) 170 (140/170) 1 Group 1 units mortar:
general purpose, thin layer 1.2
5 ≤ fb ≤ 75
800 < ρ ≤ 2 400 1.2.1 1.2.2 α ≤ 1,0 90/100 (70/90) 90/100 (70/90) 90/100 (70/90) 100/170 (70/90) 140/170 (100/140) 170/190 (110/170) 190/210 (170/190) 1.2.3 1.2.4 α ≤ 0,6 90/100
(70/90) 90/100
(70/90) 90/100
(70/90) 100/140 (70/90) 140/170 (100/140) 140/170 (110/170) 190/200 (170/190) 1.3 5 ≤ fb ≤ 25
500 ≤ ρ ≤ 800 1.3.1 1.3.2 α ≤ 1,0 100 (100) 200 (170) 200 (170) 200 (170) 200/365 (200/300) 200/365 (200/300) 300/370 300/370 1.3.3 1.3.4 α ≤ 0,6 100 (100) 170 (140) 170 (140) 200 (170) 200/365 (200/300) 200/365 (200/300) 300/370 (300/370) 2 Group
2 units 2.1 Mortar: general purpose, thin layer
5 ≤ fb ≤ 35
800 < ρ ≤ 2 200 ct ≥ 25%
2.1.1 2.1.2 α ≤ 1,0 90/100 (90/100) 90/100 (90/100) 90/100 (90/100) 100/170 (100/140) 140/240 (140) 190/240 (190/240) 190/240 (190/240) 2.1.3 2.1.4 α ≤ 0,6 90/100 (90) 90/100 (90) 90/100 (90/100) 100/140 (100/140) 190/240 (100/140) 190/240 (140/190) 190/240 (190) SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 6 row number material properties: unit strength fb [N/mm²] gross dry density ρ
[kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI for time (minutes) tfi,d 30 45 60 90 120 180 240 2.2 Mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 25
700 ≤ ρ ≤ 800 ct ≥ 25%
2.2.1 2.2.2 α ≤ 1,0 nvg (100) nvg (100) nvg (90/170) nvg (100/240) nvg (140/300) nvg (170/365) nvg nvg 2.2.3 2.2.4 α ≤ 0,6 nvg (100) nvg (100) nvg (90/140) nvg (100/170) nvg (100/300) nvg (170/300) nvg (190/300) 2.3
mortar: general purpose, thin layer and lightweight
5 ≤ fb ≤ 25
500 < ρ ≤ 900 16% ≤ ct < 25%
2.3.1 2.3.2 α ≤ 1,0 nvg (100) nvg (170) nvg (90/170) nvg (140/240) nvg (140/300) nvg (365) nvg nvg 2.3.3 2.3.4 α ≤ 0,6 nvg (100) nvg (140) nvg (90/140) nvg (100/170) nvg (140/300) nvg (300) 190 nvg 3
Group 3
units mortar: general purpose, thin layer and lightweight 3.1 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 12% 3.1.1 3.1.2 α ≤ 1,0 nvg (100) nvg (200) nvg (240) nvg (300) nvg (365) nvg (425) nvg nvg 3.1.3 3.1.4 α ≤ 0,6 300/365 (300/365) 300/365 (300/365) 300/365 (300/365) 300/365 (300/365) 300/365 (300/365) 300/365 (300/365) 365 (365) 4
Walls in which holes in units are filled with mortar or concrete mortar: general purpose, thin layer 4.1 10 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 10% 4.1.1 4.1.2 α ≤ 1,0 90/100 (100) 90/100 (100) 90/100 (100) 140/170 (100) 140/240 (140) 170/240 (170/190) 190/240 (190) 4.1.3 4.1.4 α ≤ 0,6 90/100 (90/100) 90/100 (100) 90/100 (90/100) 100/140 (100/140) 100/170 (100/140) 140/240 (140/190) 190/240 (190) 5
Group 4 units mortar: general purpose, thin layer and lightweight 5.1 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 5.1.1 5.1.2 α ≤ 1,0 nvg (200/240) nvg (200/240) nvg (200/240)nvg (300) nvg (365) nvg (425) nvg nvg 5.1.3 5.1.4 α ≤ 0,6 nvg (200/240) nvg (200/240) nvg (200/240)nvg (240) nvg (300) nvg (365) nvg nvg
SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 7 Table N.B.1.3 Clay masonry minimum thickness of non-separating loadbearing single-leaf walls ≥1,0m in length (Criterion R) for fire resistance classifications row number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness or length (mm) tF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 1S Group
1S units 1S.1 5 ≤ fb ≤ 75 general purpose mortar 5 ≤ fb ≤ 50 thin layer mortar 1 000 ≤ ρ ≤ 2 400 1S.1.1 1S.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 240 (100) 365 (170) 490 (240) nvg nvg 1S.1.3 1S.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 170 (100) 240 (100) 300 (200) nvg nvg 1 Group 1 units 1.1 mortar: general purpose, thin layer 5 ≤ fb ≤ 75 800 ≤ ρ ≤ 2 400 1.1.1 1.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 240 (100) 365 (170) 490 (240) nvg nvg 1.1.3 1.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 170 (100) 240 (100) 300 (200) nvg nvg 1.2
5 ≤ fb ≤ 25
500 ≤ ρ ≤ 800 1.2.1 1.2.2 α ≤ 1,0 fb < 5 N/mm² 100 (100) 100 (100) 100 (100) 240 (100) 365 (170) 490 (240) nvg nvg 1.2.3 1.2.4 α ≤ 0,6 fb < 3 N/mm² 100 (100) 100 (100) 100 (100) 170 (100) 240 (100) 300 (200) nvg nvg 2 Group
2 units 2.1 mortar: general purpose, thin layer
5 ≤ fb ≤ 35
800 ≤ ρ ≤ 2 200 ct ≥ 25%
2.1.1 2.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 240 (100) 365 (170) 490 (240) nvg nvg 2.1.3 2.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 170 (100) 240 (100) 300 (200) nvg nvg 2.2
5 ≤ fb ≤ 25 700 ≤ ρ ≤ 800 ct ≥ 25% 2.2.1 2.2.2 α ≤ 1,0 100 (100/240) 100 (100/240) 100 (100/240) 240 (100/240) 365 (170/300) 490 (240/365) nvg nvg 2.2.3 2.2.4 α ≤ 0,6 100 (100/170) 100 (100/170) 100 (100/170) 170 (100/240) 240 (100/240) 300 (200/300) nvg nvg 2.3
mortar: general purpose, thin layer and lightweight
5 ≤ fb ≤ 25
500 ≤ ρ ≤ 900 16% ≤ ct ≤ 25%
2.3.1 2.3.2 α ≤ 1,0 nvg (100/240) nvg (100/240) nvg (100/240) nvg (100/240) nvg (170/300) nvg (240/365) nvg nvg 2.3.3 2.3.4 α ≤ 0,6 nvg (100/170) nvg (100/170) nvg (100/170) nvg (100/240) nvg (100/240) nvg (200/300) nvg nvg
3 Group 3 units SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 8 row number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness or length (mm) tF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 3.1 mortar:
general purpose, thin layer and lightweight 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 12%
3.1.1 3.1.2 α ≤ 1,0 nvg (100) nvg (170) nvg (240) nvg (300) nvg (365) nvg (425) nvg 3.1.3 3.1.4 α ≤ 0,6 nvg (100) nvg (140) nvg (170) nvg (240) nvg (300) nvg (365) nvg 4 Walls in which holes in units are filled with mortar or concrete
4.1
mortar:
general purpose, thin layer 10 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 10%
4.1.1 4.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 240 (100) 365 (170) 490 (240) nvg nvg 4.1.3 4.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 170 (100) 240 (100) 300 (200) nvg nvg 5 Group 4
units 5.1 mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 5.1.1 5.1.2 α ≤ 1,0 nvg (100) nvg (170) nvg (240) nvg (300) nvg (365) nvg (425) nvg nvg 5.1.3 5.1.4 α ≤ 0,6 nvg (100) nvg (140) nvg (170) nvg (240) nvg (300) nvg (365) nvg nvg
Table N.B.1.4 Clay masonry minimum length of non-separating loadbearing single-leaf walls <1,0m in length (Criterion R) for fire resistance classifications row
number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness wall thickness [mm] Minimum wall length (mm) lF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 1S Group 1S units
1S.1 5 ≤ fb ≤ 75 general purpose mortar 5 ≤ fb ≤ 50 thin layer mortar 1 000 ≤ ρ ≤ 2 400 1S.1.1 1S.1.2 α ≤ 1,0 nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg 1S.1.3 1S.1.4 α ≤ 0,6 nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg 1 Group 1 units 1.1 mortar: general purpose, thin layer 5 ≤ fb ≤ 75
800 ≤ ρ ≤ 2 400 1.1.1 1.1.2. α ≤ 1,0 100 990 (490) 990 (600) 990 (600) nvg (730) nvg nvg nvg nvg nvg nvg 1.1.3 1.1.4 170 600 (240) 730 (240) 730 (240) 990 (365) nvg (365) nvg
nvg nvg
nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 9 row
number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness wall thickness [mm] Minimum wall length (mm) lF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 1.1.5 1.1.6 240 365 (170) 490 (170) 490 (170) 600 (240) nvg (240) nvg (365) nvg
nvg 1.1.7 1.1.8 300 300 (170) 365 (170) 365 (170) 490 (200) nvg (240) nvg (300) nvg
nvg 1.1.9 1.1.10 α ≤ 0,6 100 600 (365) 730 (490) 730 (490) 990 (600) nvg (730) nvg
nvg nvg
nvg 1.1.11 1.1.12 170 490 (240) 600 (240) 600 (240) 730 (240) 990 (300) nvg
nvg nvg
nvg 1.1.13 1.1.14 240 200 (170) 240 (170) 240 (170) 300 (170) 365 (240) 490 (300) nvg
nvg 1.1.15 1.1.16 300 200 (170) 200 (170) 200 (170) 240 (170) 365 (170) 490 (240) nvg
nvg 1.2 mortar: general purpose, thin layer 5 ≤ fb ≤ 25 500 ≤ ρ ≤ 800 1.2.1 1.2.2 α ≤ 1,0 100 990 (490) 990 (600) 990 (600) nvg (730) nvg nvg nvg
nvg nvg
nvg 1.2.3 1.2.4 170 600 (240) 730 (240) 730 (240) 990 (365) nvg (365) nvg
nvg nvg
nvg 1.2.5 1.2.6 240 365 (170) 490 (170) 490 (170) 600 (240) nvg (240) nvg (365) nvg
nvg 1.2.7 1.2.8 300 300 (170) 365 (170) 365 (170) 490 (200) nvg (240) nvg (300) nvg
nvg 1.2.9 1.2.10 α ≤ 0,6 100 600 (365) 730 (490) 730 (490) 990 (600) nvg (730) nvg
nvg nvg
nvg 1.2.11 1.2.12 170 490 (240) 600 (240) 600 (240) 730 (240) 990 (300) nvg
nvg nvg
nvg 1.2.13 1.2.14 240 200 (170) 240 (170) 240 (170) 300 (170) 365 (170) 490 (240) nvg
nvg 1.2.15 1.2.16 300 200 (170) 200 (170) 200 (170) 240 (170) 365 (170) 490 (240) nvg nvg 2 Group
2
units 2.1 mortar: general purpose, thin layer
5 ≤ fb ≤ 35
800 < ρ ≤ 2 200
ct ≥ 25% 2.1.1 2.1.2 α ≤ 1,0 100 990 (490) 990 (600) 990 (600) nvg (730) nvg nvg nvg nvg nvg
nvg 2.1.3 2.1.4 170 600 (240) 730 (240) 730 (240) 990 (365) nvg (365) nvg
nvg nvg
nvg 2.1.5 2.1.6 240 365 (170) 490 (170) 490 (170) 600 (240) nvg (240) nvg (365) nvg
nvg 2.1.7 2.1.8 300 300 (170) 365 (170) 365 (170) 490 (200) nvg (240) nvg (300) nvg
nvg 2.1.9 2.1.10 α ≤ 0,6 100 600 (365) 730 (490) 730 (490) 990 (600) nvg (730) nvg
nvg nvg
nvg 2.1.11 2.1.12 170 490 (240) 600 (240) 600 (240) 730 (240) 990 (300) nvg
nvg nvg
nvg 2.1.13 2.1.14 240 200 (170) 240 (170) 240 (170) 300 (170) 365 (240) 490 (300) nvg
nvg 2.1.15 2.1.16 300 200 (170) 200 (170) 200 (170) 240 (170) 365 (170) 490 (240) nvg
nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 10 row
number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness wall thickness [mm] Minimum wall length (mm) lF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 2.2 5 ≤ fb ≤ 25 700 ≤ ρ ≤ 800
ct ≥ 25%
2.2.1 2.2.2 α ≤ 1,0 100 990 (490) 990 (600) 990 (600) nvg (730) nvg
nvg nvg
nvg nvg
nvg 2.2.3 2.2.4 170 600 (240) 730 (240) 730 (240) 990 (365) nvg (365) nvg
nvg nvg
nvg 2.2.5 2.2.6 240 365 (170) 490 (170) 490 (170) 600 (240) nvg (240) nvg (365) nvg
nvg 2.2.7 2.2.8 300 300 (170) 365 (170) 365 (170) 490 (200) nvg (240) nvg (300) nvg
nvg 2.2.9 2.2.10 α ≤ 0,6 100 600 (365) 730 (490) 730 (490) 990 (600) nvg (730) nvg
nvg nvg
nvg 2.2.11 2.2.12 170 490 (240) 600 (240) 600 (240) 730 (240) 990 (300) nvg
nvg nvg
nvg 2.2.13 2.2.14 240 200 (170) 240 (170) 240 (170) 300 (170) 365 (240) 490 (300) nvg
nvg 2.2.15 2.2.16 300 200 (170) 200 (170) 200 (170) 240 (170) 365 (170) 490 (240) nvg
nvg 2.3 5 ≤ fb ≤ 25 500 ≤ ρ ≤ 900
16% < ct
≤ 25%
2.3.1 2.3.2 α ≤ 1,0 100 nvg (490) nvg (600) nvg (600) nvg (730) nvg
nvg nvg
nvg nvg
nvg 2.3.3 2.3.4 170 nvg (240) nvg (240) nvg (240) nvg (240) nvg (365) nvg (365) nvg
nvg 2.3.5 2.3.6 240 nvg (170) nvg (170) nvg (170) nvg (240) nvg (240) nvg (365) nvg
nvg 2.3.7 2.3.8 300 nvg (170) nvg (170) nvg (170) nvg (200) nvg (240) nvg (300) nvg
nvg 2.3.9 2.3.10 α ≤ 0,6 100 nvg (365) nvg (490) nvg (490) nvg (600) nvg (730) nvg
nvg nvg
nvg 2.3.11 2.3.12 170 nvg (240) nvg (240) nvg (240) nvg (240) nvg (300) nvg
nvg nvg
nvg 2.3.13 2.3.14 240 nvg (170) nvg (170) nvg (170) nvg (170) nvg (240) nvg (300) nvg
nvg 2.3.15 2.3.16 300 nvg (170) nvg (170) nvg (170) nvg (170) nvg (170) nvg (240) nvg
nvg 2.3.17 2.3.18 365 nvg (100) nvg (170) nvg (170) nvg (170) nvg (240) nvg (240) nvg
nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 11 row
number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness wall thickness [mm] Minimum wall length (mm) lF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 3 Group 3 units 3.1 mortar: general purpose and lightweight
5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200
ct ≥ 12% 3.1.1 3.1.2 α ≤ 1,0 240 nvg (240) nvg (240) nvg (240) nvg (300) nvg (300) nvg (365) nvg
nvg 3.1.3 3.1.4 300 nvg (240) nvg (240) nvg (240) nvg (240) nvg (240) nvg (300) nvg
nvg 3.1.5 3.1.6 365 nvg (240) nvg (240) nvg (240) nvg (240) nvg (240) nvg (240) nvg
nvg 3.1.7 3.1.8 α ≤ 0,6 240 nvg (240) nvg (240) nvg (240) nvg (240) nvg (240) nvg (365) nvg
nvg 3.1.9 3.1.10 300 nvg (170) nvg (170) nvg (170) nvg (170) nvg (240) nvg (240) nvg
nvg 3.1.11 3.1.12 365 nvg (170) nvg (170) nvg (170) nvg (170) nvg (240) nvg (240) nvg
nvg 4 Walls in which holes in units are filled with mortar or concrete
4.1 mortar: general purpose and thin layer
10 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200
ct ≥ 10% 4.1.1 4.1.2 α ≤ 1,0 100 990 (490) 990 (600) 990 (600) nvg (730) nvg
nvg nvg
nvg nvg
nvg 4.1.3 4.1.4 170 600 (240) 730 (240) 730 (240) 990 (365) nvg (365) nvg
nvg nvg
nvg 4.1.5 4.1.6 240 365 (240) 490 (170) 490 (170) 600 (240) nvg (2 40) nvg (365) nvg
nvg 4.1.7 4.1.8 300 300 (170) 365 (170) 365 (170) 490 (200) nvg (240) nvg (300) nvg
nvg 4.1.9 4.1.10 α ≤ 0,6 100 600 (365) 730 (490) 730 (490) 990 (600) nvg (730) nvg
nvg nvg
nvg 4.1.11 4.1.12 170 490 (240) 600 (240) 600 (240) 730 (240) 990 (300) nvg
nvg nvg
nvg 4.1.13 4.1.14 240 200 (170) 240 (170) 240 (170) 300 (170) 365 (240) 490 (300) nvg
nvg 4.1.15 4.1.16 300 200 (170) 200 (170) 200 (170) 240 (170) 365 (170) 490 (240) nvg
nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 12 row
number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness wall thickness [mm] Minimum wall length (mm) lF for fire resistance classification R for time (minutes) tfi,d 30 45 60 90 120 180 240 5 Group 4
units 5.1 mortar: general purpose and lightweight 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 5.1.1 5.1.2 α ≤ 1,0 240 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg 5.1.3 5.1.4 300 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg 5.1.5 5.1.6 365 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg 5.1.7 5.1.8 α ≤ 0,6 240 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg 5.1.9 5.1.10 300 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg 5.1.11 5.1.12 365 nvg nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg nvg
nvg
Table N.B.1.5 Clay masonry minimum thickness of separating loadbearing and non-loadbearing single and double leaf fire walls
(Criteria REI-M and EI-M) for fire resistance classifications row number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI-M and EI-M for time (minutes) tfi,d 30 45 60 90 120 180 240 1S Group 1S units
1S.1 5 ≤ fb ≤ 75 general purpose mortar 5 ≤ fb ≤ 50 thin layer mortar 1 000 ≤ ρ ≤ 2 400 1S.1.1 1S.1.2 α ≤ 1,0 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 1S.1.3 1S.1.4 α ≤ 0,6 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 1 Group 1 units 1.1 5 ≤ fb ≤ 75
800 ≤ ρ ≤ 2 400 1.1.1 1.1.2 α ≤ 1,0 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 1.1.3 1.1.4 α ≤ 0,6 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 1.2 5 ≤ fb ≤ 25 500 ≤ ρ ≤ 800 1.2.1 1.2.2 α ≤ 1,0 240 (170) 240 (170) 240 (170) 240/300 (170/240) 365 (365) 365 (365) nvg nvg 1.2.3 1.2.4 α ≤ 0,6 240 (170) 240 (170) 240 (170) 240/300 (170/240) 365 (365) 365 (365) nvg nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 13 row number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI-M and EI-M for time (minutes) tfi,d 30 45 60 90 120 180 240 2 Group
2
units 2.1 mortar: general purpose, thin layer
5 ≤ fb ≤ 35 800 ≤ ρ ≤ 2 200
ct ≥ 25%
2.1.1 2.1.2 α ≤ 1,0 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 2.1.3 2.1.4 α ≤ 0,6 240 (170) 240 (170) 240 (170) 240 (170) 365 (365) 365 (365) nvg nvg 2.2 mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 25 700 ≤ ρ ≤ 800
ct ≥ 25%
2.2.1 2.2.2 α ≤ 1,0 240/365 (170/240) 240/365 (170/240) 240/365 (170/240) 240/365 (170/300) 365 (365) 365 (365) nvg nvg 2.2.3 2.2.4 α ≤ 0,6 240/365 (170/240) 240/365 (170/240) 240/365 (170/240) 240/365 (170/240) 365 (365) 365 (365) nvg nvg 2.3 mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 25 500 ≤ ρ ≤ 900
16% ≤ ct ≤ 25% 2.3.1 2.3.2 α ≤ 1,0 365 (170) 365 (170) 365 (170) 365 (170/365) nvg (365) nvg (365) nvg nvg 2.3.3 2.3.4 α ≤ 0,6 365 (170) 365 (170) 365 (170) 365 (170/300) nvg (365) nvg (365) nvg nvg 3 Group 3 units
3.1 mortar: general purpose, lightweight, thin layer,
vertical perforation
5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200
ct ≥ 12%
3.1.1 3.1.2 α ≤ 1,0 nvg (365) nvg (365) nvg (365) nvg (365) nvg nvg nvg nvg nvg nvg 3.1.3 3.1.4 α ≤ 0,6 nvg (365) nvg (365) nvg (365) nvg (365) nvg nvg nvg nvg nvg nvg 4 Walls in which holes in units are filled with mortar or concrete
4.1 mortar: general purpose, thin layer,
5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200
ct ≥ 10% 4.1.1 4.1.2 α ≤ 1,0 240 (170) 240 (170) 240 (170) 240 (170) nvg nvg nvg
nvg nvg
nvg 4.1.3 4.1.4 α ≤ 0,6 240 (170) 240 (170) 240 (170) 240 (170) nvg
nvg nvg
nvg nvg
nvg
5 Group 4 units 5.1 mortar: general purpose, lightweight, thin layer,
5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200
ct ≥ 12%
5.1.1 5.1.2 α ≤ 1,0 nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 14 row number material properties: unit strength fb [N/mm²] gross dry density ρ [kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI-M and EI-M for time (minutes) tfi,d 30 45 60 90 120 180 240 5.1.3 5.1.4 α ≤ 0,6 nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg nvg
Table N.B.1.6 Clay masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded
(Criteria REI) for fire resistance classifications row number material properties: unit strength fb [N/mm²] gross dry density ρ
[kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI for time (minutes) tfi,d 30 45 60 90 120 180 240 1S Group 1S units
1S.1 5 ≤ fb ≤ 75 general purpose mortar 5 ≤ fb ≤ 50 thin layer mortar 1 000 ≤ ρ ≤ 2 400 1S.1.1 1S.1.2 α ≤ 1,0 90 (90) 90 (90) 90 (90) 100 (90) 100 (100) nvg nvg nvg nvg 1S.1.3 1S.1.4 α ≤ 0,6 90 (90) 90 (90) 90 (90) 100 (90) 100 (100) nvg nvg nvg nvg 1 Group 1 units
1.1 mortar: general purpose, thin layer 5 ≤ fb ≤ 75
800 ≤ ρ ≤ 2 400 1.1.1 1.1.2 α ≤ 1,0 90 (90) 90 (90) 90 (90) 100 (90/100) 100/170 (100) nvg nvg nvg nvg 1.1.3 1.1.4 α ≤ 0,6 90 (90) 90 (90) 90 (90) 100 (90) 100/140 (100) nvg nvg nvg nvg 1.2 mortar: general purpose, thin layer 5 ≤ fb ≤ 25 500 ≤ ρ ≤ 800
1.2.1 1.2.2 α ≤ 1,0 100 (100) 170 (140) 170 (140) 240 (200) 365 (300) nvg nvg nvg nvg 1.2.3 1.2.4 α ≤ 0,6 100 (100) 140 (140) 170 (140) 200 (170) 300 (300) nvg nvg nvg nvg 2 Group 2 units 2.1 mortar: general purpose, thin layer,
5 ≤ fb ≤ 35 800 < ρ ≤ 2 200
ct ≥ 25% 2.1.1 2.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 140/170 (100) 170/240 (100/140) nvg nvg nvg nvg 2.1.3 2.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 100/140 (100) 170 (100/140) nvg nvg nvg nvg 2.2 15 ≤ fb ≤ 25
700 ≤ ρ ≤ 800 ct ≥ 25% 2.2.1 2.2.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 170 (100) 240 (140) nvg nvg nvg nvg 2.2.3 2.2.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 140 (100) 170 (100) nvg nvg nvg nvg SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 15 row number material properties: unit strength fb [N/mm²] gross dry density ρ
[kg/m³] combined thickness ct
% of wall thickness Minimum wall thickness (mm) tF for fire resistance classification REI for time (minutes) tfi,d 30 45 60 90 120 180 240 2.3 mortar: general purpose, thin layer and lightweight
5 ≤ fb ≤ 25 500 ≤ ρ ≤ 900
16% ≤ ct < 25%
2.3.1 2.3.2 α ≤ 1,0 nvg (100) nvg (100) nvg (100/170) nvg (100/240) nvg (140/300) nvg nvg nvg nvg 2.3.3 2.3.4 α ≤ 0,6 100 (100) 100 (100) 100 (100/140) 140 (100/170) 170 (100/300) nvg nvg nvg nvg 3 Group 3 units 3.1 mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 12% 3.1.1 3.1.2 α ≤ 1,0 nvg (100) nvg (170) nvg (240) nvg (300) nvg (365) nvg nvg nvg nvg 3.1.3 3.1.4 α ≤ 0,6 nvg (100 nvg (140) nvg (170) nvg (240) nvg (300) nvg nvg nvg nvg 4 Walls in which holes in units are filled with mortar or concrete 4.1 mortar: general purpose and thin layer 10 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 ct ≥ 10% 4.1.1 4.1.2 α ≤ 1,0 100 (100) 100 (100) 100 (100) 170 (100) 240 (140) nvg nvg nvg nvg 4.1.3 4.1.4 α ≤ 0,6 100 (100) 100 (100) 100 (100) 140 (100) 170 (100) nvg nvg nvg nvg 5 Group 4 units 5.1 mortar: general purpose, thin layer and lightweight 5 ≤ fb ≤ 35 500 ≤ ρ ≤ 1 200 5.1.1 5.1.2 α ≤ 1,0 nvg (100) nvg (170) nvg (240) nvg (300) nvg (365) nvg nvg nvg nvg 5.1.3 5.1.4 α ≤ 0,6 nvg (100) nvg (140) nvg (170) nvg (240) nvg (300) nvg nvg nvg nvg N.B.2 Calcium silicate masonry Calcium silicate units conforming to EN 771-2 SIST EN 1996-1-2:2005/AC:2011



EN 1996-1-2:2005/AC:2010 (E) 16 Table N.B.2.1 Calcium silicate masonry minimum thickness of separating non-loadbearing separating walls
(Criteria EI) for fire resistance classifications row number material properties:
gross dry density ρ [kg/m³] Minimum wall thickness (mm) tF for fire resistance classification EI for time (minutes) tfi,d 30 45 60 90 120 180 240 1 Group 1S , 1, 2 and 3 units
1.1 mortar: general purpose, 600 ≤ ρ ≤ 2 400 1.1.1 1.1.2
70 (50) 70/90
(70) 70/90
(70) 100 (90) 100/140 (90/140) 140/170 (140) 140/200 (170)
1.2 mortar: thin layer 600 ≤ ρ ≤ 2 400 1.2.1 1.2.2
70 (50) 70/90
(70) 70/90
(70) 100 (100) 100/140 (100/140) 140/170 (140) 140/200 (170)
Table N.B.2.2 Calcium silicate masonry minimum thickness of separating loadbearing single-leaf walls
(Criteria REI) for fire resistance classifications row
number material prop
...