BS EN 16737-2016 Structural timber Visual strength grading of tropical hardwood《结构木材 热带硬木的外观强度分级》.pdf
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1、BS EN 16737:2016Structural timber Visualstrength grading of tropicalhardwoodBSI Standards PublicationBS EN 16737:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16737:2016. It partially supersedes BS 5756:2007+A1:2011.BS EN 16737:2016 partially supersedes B
2、S 5756:2007+A1:2011, specifically clause 5 covering the requirements for structural hardwood species and the corresponding Table 1. BS 5756 will be revised at a future date as a result of the publication of this standard.The UK committee notes that there are many published strength class assignments
3、 for named species and sources of tropical hardwood timber that rely on the HS grade of BS 5756. The minor nature of the differences between the STH grade in this standard and the HS grade means that these assignments can adopt the STH grading rules as published here.The UK participation in its prep
4、aration was entrusted to Technical Committee B/518, Structural timber.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli
5、cation. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 86021 8ICS 79.040Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committ
6、ee on 31 July 2016.Amendments/corrigenda issued since publicationDate Text affectedg3g3g3g8g24g21g18g19g8g4g17g3g22g23g4g17g7g4g21g7g3g17g18g21g16g8g3g8g24g21g18g19g50g8g17g17g8g3g8g24g21g18g19g34g12g22g6g11g8g3g17g18g21g16g3EN 16737 g3 g3g3 g16g131g155g3g884g882g883g888g3g12g6g22g3g889g891g484g882g
7、886g882g3g8g144g137g142g139g149g138g3g25g135g148g149g139g145g144g3g3g22g150g148g151g133g150g151g148g131g142g3g150g139g143g132g135g148g3g486g3g25g139g149g151g131g142g3g149g150g148g135g144g137g150g138g3g137g148g131g134g139g144g137g3g145g136g3g150g148g145g146g139g133g131g142g3g138g131g148g134g153g145g1
8、45g134g3g5g145g139g149g3g134g135g3g149g150g148g151g133g150g151g148g135g3g486g3g6g142g131g149g149g135g143g135g144g150g3g152g139g149g151g135g142g3g134g135g149g3g132g145g139g149g3g136g135g151g139g142g142g151g149g3g150g148g145g146g139g133g131g151g154g3g134g135g3g149g150g148g151g133g150g151g148g135g3g3 g
9、5g131g151g138g145g142g156g3g136g242g148g3g150g148g131g137g135g144g134g135g3g29g153g135g133g141g135g3g486g3g25g139g149g151g135g142g142g135g3g22g145g148g150g139g135g148g151g144g137g3g152g145g144g3g23g148g145g146g135g144g138g145g142g156g3g144g131g133g138g3g134g135g148g3g9g135g149g150g139g137g141g135g13
10、9g150g3g23g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g153g131g149g3g131g146g146g148g145g152g135g134g3g132g155g3g6g8g17g3g145g144g3g883g891g3g16g131g148g133g138g3g884g882g883g888g484g3g3g3g6g8g17g3g143g135g143g132g135g148g149g3g131g148g135g3g132g145g151g144g134g3g1
11、50g145g3g133g145g143g146g142g155g3g153g139g150g138g3g150g138g135g3g6g8g17g512g6g8g17g8g15g8g6g3g12g144g150g135g148g144g131g142g3g21g135g137g151g142g131g150g139g145g144g149g3g153g138g139g133g138g3g149g150g139g146g151g142g131g150g135g3g150g138g135g3g133g145g144g134g139g150g139g145g144g149g3g136g145g14
12、8g3g137g139g152g139g144g137g3g150g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g150g138g135g3g149g150g131g150g151g149g3g145g136g3g131g3g144g131g150g139g145g144g131g142g3g149g150g131g144g134g131g148g134g3g153g139g150g138g145g151g150g3g131g144g155g3g131g142g150g135g148
13、g131g150g139g145g144g484g3g24g146g486g150g145g486g134g131g150g135g3g142g139g149g150g149g3g131g144g134g3g132g139g132g142g139g145g137g148g131g146g138g139g133g131g142g3g148g135g136g135g148g135g144g133g135g149g3g133g145g144g133g135g148g144g139g144g137g3g149g151g133g138g3g144g131g150g139g145g144g131g142g
14、3g149g150g131g144g134g131g148g134g149g3g143g131g155g3g132g135g3g145g132g150g131g139g144g135g134g3g145g144g3g131g146g146g142g139g133g131g150g139g145g144g3g150g145g3g150g138g135g3g6g8g17g486g6g8g17g8g15g8g6g3g16g131g144g131g137g135g143g135g144g150g3g6g135g144g150g148g135g3g145g148g3g150g145g3g131g144g
15、155g3g6g8g17g3g143g135g143g132g135g148g484g3g3g23g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g135g154g139g149g150g149g3g139g144g3g150g138g148g135g135g3g145g136g136g139g133g139g131g142g3g152g135g148g149g139g145g144g149g3g523g8g144g137g142g139g149g138g481g3g9g148g135
16、g144g133g138g481g3g10g135g148g143g131g144g524g484g3g4g3g152g135g148g149g139g145g144g3g139g144g3g131g144g155g3g145g150g138g135g148g3g142g131g144g137g151g131g137g135g3g143g131g134g135g3g132g155g3g150g148g131g144g149g142g131g150g139g145g144g3g151g144g134g135g148g3g150g138g135g3g148g135g149g146g145g144g
17、149g139g132g139g142g139g150g155g3g145g136g3g131g3g6g8g17g3g143g135g143g132g135g148g3g139g144g150g145g3g139g150g149g3g145g153g144g3g142g131g144g137g151g131g137g135g3g131g144g134g3g144g145g150g139g136g139g135g134g3g150g145g3g150g138g135g3g6g8g17g486g6g8g17g8g15g8g6g3g16g131g144g131g137g135g143g135g144
18、g150g3g6g135g144g150g148g135g3g138g131g149g3g150g138g135g3g149g131g143g135g3g149g150g131g150g151g149g3g131g149g3g150g138g135g3g145g136g136g139g133g139g131g142g3g152g135g148g149g139g145g144g149g484g3g3g6g8g17g3g143g135g143g132g135g148g149g3g131g148g135g3g150g138g135g3g144g131g150g139g145g144g131g142g
19、3g149g150g131g144g134g131g148g134g149g3g132g145g134g139g135g149g3g145g136g3g4g151g149g150g148g139g131g481g3g5g135g142g137g139g151g143g481g3g5g151g142g137g131g148g139g131g481g3g6g148g145g131g150g139g131g481g3g6g155g146g148g151g149g481g3g6g156g135g133g138g3g21g135g146g151g132g142g139g133g481g3g7g135g1
20、44g143g131g148g141g481g3g8g149g150g145g144g139g131g481g3g9g139g144g142g131g144g134g481g3g9g145g148g143g135g148g3g28g151g137g145g149g142g131g152g3g21g135g146g151g132g142g139g133g3g145g136g3g16g131g133g135g134g145g144g139g131g481g3g9g148g131g144g133g135g481g3g10g135g148g143g131g144g155g481g3g10g148g13
21、5g135g133g135g481g3g11g151g144g137g131g148g155g481g3g12g133g135g142g131g144g134g481g3g12g148g135g142g131g144g134g481g3g12g150g131g142g155g481g3g15g131g150g152g139g131g481g3g15g139g150g138g151g131g144g139g131g481g3g15g151g154g135g143g132g145g151g148g137g481g3g16g131g142g150g131g481g3g17g135g150g138g1
22、35g148g142g131g144g134g149g481g3g17g145g148g153g131g155g481g3g19g145g142g131g144g134g481g3g19g145g148g150g151g137g131g142g481g3g21g145g143g131g144g139g131g481g3g22g142g145g152g131g141g139g131g481g3g22g142g145g152g135g144g139g131g481g3g22g146g131g139g144g481g3g22g153g135g134g135g144g481g3g22g153g139g
23、150g156g135g148g142g131g144g134g481g3g23g151g148g141g135g155g3g131g144g134g3g24g144g139g150g135g134g3g14g139g144g137g134g145g143g484g3g3g3g3g3g8g24g21g18g19g8g4g17g3g6g18g16g16g12g23g23g8g8g3g9g18g21g3g22g23g4g17g7g4g21g7g12g29g4g23g12g18g17g3g6g18g16g12g23g50g3g8g24g21g18g19g50g8g17g3g7g8g3g17g18g2
24、1g16g4g15g12g22g4g23g12g18g17g3g8g24g21g18g19g34g12g22g6g11g8g22g3g14g18g16g12g23g8g8g3g9g111g21g3g17g18g21g16g24g17g10g3g3g3g3CEN-CENELECg3Management Centre: Avenue Marnix 17, B-1000 Brussels g825g3g884g882g883g888g3g6g8g17g3 g4g142g142g3g148g139g137g138g150g149g3g145g136g3g135g154g146g142g145g139g
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