1、December 2015 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.010.30!%I;7“2382420www.din.d
2、eDIN EN 1991-1-3/A1Eurocode 1 Actions on structures Part 1-3: General actions Snow loads;English version EN 1991-1-3:2003/A1:2015,English translation of DIN EN 1991-1-3/A1:2015-12Eurocode 1 Einwirkungen auf Tragwerke Teil 1-3: Allgemeine Einwirkungen Schneelasten;Englische Fassung EN 1991-1-3:2003/A
3、1:2015,Englische bersetzung von DIN EN 1991-1-3/A1:2015-12Eurocode 1 Actions sur les structures Partie 1-3: Actions gnrales Charges de neige;Version anglaise EN 1991-1-3:2003/A1:2015,Traduction anglaise de DIN EN 1991-1-3/A1:2015-12ModifiesDIN EN 1991-1-3:2010-12www.beuth.deDocument comprises 16 pag
4、esDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.15 DIN EN 1991-1-3/A1:2015-12 2 A comma is used as the decimal marker. National foreword This document (EN 1991-01-03:2003/A1:2015) has been prepared by Technical Committee CEN/TC
5、 250 “Structural Eurocodes” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-51-02 AA Einwirkungen auf Bauten (SpA zu CEN/TC 250/SC 1). EUROP
6、EAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1991-1-3:2003/A1 September 2015 ICS 91.010.30 English Version Eurocode 1 - Actions on structures - Part 1-3: General actions - Snow loads Eurocode 1 - Actions sur les structures - Partie 1-3 : Actions gnrales - Charges de neige Eurocode 1 - Einwirkunge
7、n auf Tragwerke - Teil 1-3: Allgemeine Einwirkungen, Schneelasten This amendment A1 modifies the European Standard EN 1991-1-3:2003; it was approved by CEN on 17 July 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
8、amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This amendment exists in three official versions (English
9、, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bul
10、garia, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, T
11、urkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
12、 Ref. No. EN 1991-1-3:2003/A1:2015 EEN 1991-1-3:2003/A1:2015 (E) 2 Contents Page European foreword . 3 1 Modifications to the Foreword 4 2 Modification to 1.2, Normative references . 4 3 Modifications to 3.3. Exceptional conditions . 4 4 Modifications to 4.3. Treatment of exceptional snow loads on t
13、he ground . 5 5 Modifications to 5.2 Load arrangements 5 6 Modifications to 5.3.1, General . 6 7 Modifications to 5.3.2, Monopitch roofs 7 8 Modifications to 5.3.3, Pitched roofs 8 9 Modifications to 5.3.4, Multi-span roofs 9 10 Modifications to 5.3.5, Cylindrical roofs . 11 11 Modifications to 5.3.
14、6, Roof abutting and close to taller construction works 13 12 Modification to 6.2 Drifting at projections and obstructions . 13 13 Modification to Annex B (normative), Snow load shape coefficients for exceptional snow drifts. 13 14 Modifications to Annex C (informative), European Ground Snow Load Ma
15、ps . 13 DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 3 European foreword This document (EN 1991-1-3:2003/A1:2015) has been prepared by Technical Committee CEN/TC 250 “Structural Eurocodes”, the secretariat of which is held by BSI. This European Standard shall be given the status of a nati
16、onal standard, either by publication of an identical text or by endorsement, at the latest by September 2016, and conflicting national standards shall be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of
17、patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN-CENELEC Internal Regulations, the natio
18、nal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
19、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 4 1 Modifications to the Foreword Replace the 5thparagraph: “Annexes A and B are normative.
20、 Annexes C, D and E are informative.“ with the following one: “Annex A is normative. Annexes B, C, D and E are informative.“. In the final part “National Annex for EN 1991-1-3“, in the final list, in the 3rdline of the numbering of subclauses, just after “3.3(1),“ add “3.3(2),“. In the final part “N
21、ational Annex for EN 1991-1-3“, in the final list, in the 5thline of the numbering of subclauses, just after “5.2(8)“ add “5.3.1(1), Note to Table 5.2, 5.3.2(2)“. In the final part “National Annex for EN 1991-1-3“, in the final list, in the 5thline of the numbering of subclauses, after “5.3.4(3),“,
22、add “5.3.4(4),“. 2 Modification to 1.2, Normative references Delete the NOTE and the following reference: “ NOTE: The following European Standards, which are published or in preparation, are cited in normative clauses EN 1991-2 Eurocode 1: Actions on structures Part 2: Traffic loads on bridges“. 3 M
23、odifications to 3.3, Exceptional conditions Paragraph 3.3(2), replace: “. b) the accidental design situation should be used for snow load cases determined using 5.2(3)P c) and Annex B. NOTE: See Annex A case B2.“ with: “. b) the accidental design situation should be used for snow load cases determin
24、ed using 5.2(3)P c) and appropriate load arrangements and snow load shape coefficients for exceptional snow drifts. NOTE 1: See Annex A case B2. NOTE 2: The National Annex may specify the load arrangements to be used for exceptional snow drifts, also making reference to the informative Annex B, wher
25、e its use is allowed (see also 5.3 and 6.2).“. DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 5 Paragraph 3.3(3), replace: “c) the accidental design situation should be used for the snow load cases determined using 5.2(3)P c) and Annex B.“ with “ c) the accidental design situation should be
26、 used for the snow load cases determined using 5.2(3)P c) and appropriate load arrangements and snow load shape coefficients for exceptional snow drifts.“. At the end of paragraph 3.3(3), add: “NOTE 3: The National Annex may specify the load arrangements to be used for exceptional snow drifts, also
27、making reference to the informative Annex B, where its use is allowed (see also 5.3 and 6.2).“. 4 Modifications to 4.3, Treatment of exceptional snow loads on the ground Note to paragraph 4.3(1), replace: “NOTE: The coefficient Cesl may be set by the National Annex. The recommended value for Cesl is
28、 2,0 (see also 2(3)“ with: “NOTE: The coefficient Cesl and locations of its application may be set by the National Annex. The recommended value for Cesl is 2,0 (see also 2(3)“. 5 Modifications to 5.2 Load arrangements Paragraph 5.2(2), replace: “(2) The load arrangements should be determined using 5
29、.3; and Annex B, where specified in accordance with 3.3. NOTE: The National Annex may specify the use of Annex B for the roof shapes described in 5.3.4, 5.3.6 and 6.2, and will normally apply to specific locations where all the snow usually melts and clears between the individual weather systems and
30、 where moderate to high wind speeds occur during the individual weather system.“ with: “(2) The load arrangements should be determined using 5.3, and appropriate provisions where specified in accordance with 3.3 exceptional snow drifts are likely to occur. NOTE: The National Annex may specify the lo
31、ad arrangements for exceptional snow drifts or the use of Annex B for the roof shapes described in 5.3.4, 5.3.6 and 6.2, which will normally apply to specific locations where all the snow usually melts and clears between the individual weather systems and where moderate to high wind speeds occur dur
32、ing the individual weather system.“. Paragraph 5.2(3)P, replace: “c) for the accidental design situations where exceptional snow drift is the accidental action and where Annex B applies“ DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 6 with: “c) for the accidental design situations where ex
33、ceptional snow drift is the accidental action“. Paragraph 5.2(3)P, replace: “where: i is the snow load shape coefficient (see Section 5.3 and Annex B)“ with: “where: i is the snow load shape coefficient (see Section 5.3)“. 6 Modifications to 5.3.1, General Paragraph 5.3.1(1), replace: “(1) 5.3 gives
34、 roof shape coefficients for undrifted and drifted snow load arrangements for all types of roofs identified in this standard, with the exception of the consideration of exceptional snow drifts defined in Annex B, where its use is allowed.“ With: “(1) 5.3 gives roof shape coefficients for undrifted a
35、nd drifted snow load arrangements for all types of roofs identified in this standard, with the exception of the consideration of exceptional snow drifts. NOTE: Where exceptional snow drifts are likely to occur (see 3.3 and 5.2) the National Annex may specify the load arrangements for exceptional sno
36、w drifts or the use of Annex B.“. At the end of 5.3.1(3), replace “in Figure 5.1.” with “in Table 5.2. At the end of 5.3.1(3), add the following Table 5.2 and note: “ Table 5.2 Snow load shape coefficients Angle of pitch of roof 0 30 30 60, 3= 0 (5.4)“ with: “ For 60, 4= 0 (5.4)“. In Paragraph 5.3.5
37、(1), replace: “ For 60, 3= 0,2 + 10 h/b (5.5)“ with: “ For 60, 4= 0,2 + 10 h/b (5.5)“. In Paragraph 5.3.5(1), replace: “An upper value of 3should be specified. NOTE 1: The upper value of 3may be specified in the National Annex. The recommended upper value for 3is 2,0 (see Figure 5.5). Figure 5.5: Re
38、commended snow load shape coefficient for cylindrical roofs of differing rise to span ratios (for 60)“ with: “An upper value of 4should be specified. NOTE 1: The upper value of 4may be specified in the National Annex. The recommended upper value for 4is 2,0 (see Figure 5.4). DIN EN 1991-1-3/A1:2015-
39、12 EN 1991-1-3:2003/A1:2015 (E) 12 Figure 5.4 Recommended snow load shape coefficient for cylindrical roofs of differing rise to span ratios (for 60)“. In Paragraph 5.3.5(2), replace “in Figure 5.6” with “in Figure 5.5”. In Paragraph 5.3.5(3), replace “in Figure 5.6” with “in Figure 5.5”. Replace Fi
40、gure 5.6 (new Figure 5.5) with the following: “ Key 1 Case (i) 2 Case (ii) “. In the title line of Figure 5.6, replace “Figure 5.6” with “Figure 5.5”. DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 13 11 Modifications to 5.3.6, Roof abutting and close to taller construction works In Paragra
41、ph 5.3.6(1), replace “in Figure 5.7“ with “in Figure 5.6“. In Paragraph 5.3.6(1), in NOTE 3, replace “(see Figure 5.7).” with “(see Figure 5.6).”. In Paragraph 5.3.6(2), replace “in Figure 5.7,” with “in Figure 5.6”. Note to Paragraph 5.3.6(3), replace: “NOTE: Where permitted by the National Annex,
42、Annex B may be used to determine the load case due to drifting.“ with: “NOTE: Where exceptional snow drifts are likely to occur (see 3.3 and 5.2), the National Annex may specify the load arrangements for exceptional snow drifts or the use of Annex B.“. In Paragraph 5.3.6(3), replace “in Figure 5.7,“
43、 with “in Figure 5.6,“. In the title line of Figure 5.7, replace “Figure 5.7“ with “Figure 5.6“. 12 Modification to 6.2 Drifting at projections and obstructions Note to Paragraph 6.2(2), replace: “NOTE: Where permitted by the National Annex, Annex B may be used to determine the load case due to drif
44、ting.“ with: “NOTE: Where exceptional snow drifts are likely to occur (see 3.3), the National Annex may specify the load arrangements for exceptional snow drifts or the use of Annex B.“. 13 Modification to Annex B (normative), Snow load shape coefficients for exceptional snow drifts In the title of
45、the annex, replace “(normative)“ with “(informative)“. 14 Modifications to Annex C (informative), European Ground Snow Load Maps Note to C(1), replace: “NOTE: The snow maps supplied by CEN members who were not directly part of the Research Group have been included in this Annex in clauses C(5) Czech
46、 Republic, C(6) Iceland and C(7) Poland.“ with: “NOTE: The snow maps supplied by CEN members who were not directly part of the Research Group have been included in this Annex in clauses C(5) Iceland and C(6) Poland.“. Delete paragraph C(5): “(5) Figure C.11 shows the map supplied by the Czech Nation
47、al Authority.“. Paragraph C(6), replace: DIN EN 1991-1-3/A1:2015-12 EN 1991-1-3:2003/A1:2015 (E) 14 “(6) Figure C.12 shows the map supplied by the Icelandic National Authority.“. with: “(5) Figure C.11 shows the map supplied by the Icelandic National Authority.“. Paragraph C(7), replace: “(7) Figure
48、 C.13 shows the map supplied by the Polish National Authority.“. with: “(6) Figure C.12 shows the map supplied by the Polish National Authority.“. Delete Figure C.11. Update the numbering of Figure C.12 with “Figure C.11“. Update the numbering of Figure C.13 with “Figure C.12“. DIN EN 1991-1-3/A1:2015-12
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