NF B51-001

NF B51-001

August 1941
Standard Current

Timber. Technical and chemical characteristics of timber.

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Main informations

Collections

National standards and national normative documents

Publication date

August 1941

Number of pages

10 p.

Reference

NF B51-001

ICS Codes

79.040   Wood, sawlogs and sawn timber

Classification index

B51-001

Print number

10 - 01/10/1977
Table of contents
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  • CARACTÉRISTIQUES TECHNOLOGIQUES
  • I. - IDENTIFICATION DU BOIS
    2
  • II. - CARACTÈRES PARTICULIERS DE STRUCTURE DU BOIS
    2
  • 1 ° Généralités
    2
  • 2 ° Conditions d'âge
    2
  • 3 ° Parties de l'arbre
    3
  • 4 ° Conditions de vie de l'arbre
    3
  • III. - PROVENANCE
    4
  • 1 ° Conditions de climat
    4
  • 2 ° Conditions de sol
    4
  • 3 ° Conditions de peuplement
    4
  • IV. - QUALITÉ TECHNOLOGIQUE DU BOIS
    5
  • 1 ° DÉFAUTS
  • A. Noeuds
    5
  • B. Anomalies de croissance
    6
  • a. Fils tors
    6
  • b. Bois ronceux, loupes, broussins
    6
  • c. Courbure du tronc
    6
  • d. Irrégularités de croissance
    6
  • e. Entre-écorce
    6
  • C. Blessures
    6
  • a. Plaies d'élagage
    6
  • b. Frottures
    6
  • c. Corps étrangers inclus dans le bois
    7
  • D. Fentes
    7
  • a. Gélivure
    7
  • b. Roulure
    7
  • c. Cadranure
    7
  • d. Fissures internes
    7
  • e. Trous, fentes et fractures d'abattage
    7
  • f. Fentes de retrait ou gerces
    7
  • E. Défauts dus à des parasites végétaux
    7
  • a. Chancres
    7
  • b. Gui
    7
  • F. Défauts dus aux insectes
    7
  • Trous de vers, piqûre, vermoulure
    7
  • G. Défauts dus au débit
    8
  • Fil tranché, fil contretaillé
    8
  • 2 ° ALTÉRATIONS
  • A. Colorations anormales
    8
  • B. Lunure ou double aubier
    8
  • C. Altérations dues aux champignons
    8
  • a. Pourriture
    8
  • b. Échauffure
    8
  • c. Bleuissement, bois bleuté
    8
  • CARACTÉRISTIQUES CHIMIQUES
  • I. - COMPOSITION
    9
  • II. - CARACTÉRISTIQUES PRINCIPALES
    9
  • III. - DURABILITÉ
    10
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