SIST EN 14081-4:2005+A3:2008
(Main)Timber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems
Timber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems
This European Standard gives settings, derived according to the requirements given in EN 14081-2, for various combinations of strength classes or grades, grading machines and species from particular sources of growth. These settings are only applicable to timber from the sources indicated in the tables.
Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 4: Maschinelle Sortierung - Einstellungen von Sortiermaschinen für maschinenkontrollierte Systeme
Diese Europäische Norm enthält Einstellungen in Übereinstimmung mit den in EN 14081-2 festgelegten
Anforderungen für verschiedene Kombinationen von Festigkeitsklassen oder Sortierklassen, für verschiedene
Sortiermaschinen und verschiedene Holzarten unterschiedlicher Herkunft. Diese Einstellungen beziehen sich
nur auf Bauholz der in den Tabellen angegebenen Herkunftsländer.
Structures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 4: Classement par machine - Réglages pour les systèmes de contrôle par machine
La présente Norme européenne donne les réglages, obtenus conformément aux exigences de l’EN 14081-2, relatifs
aux différentes combinaisons de classes ou catégories de résistance, aux machines de classement et aux essences
issues de différentes sources. Ces réglages ne sont applicables qu'aux bois provenant des sources indiquées dans
les tableaux.
Lesene konstrukcije - Razvrščanje konstrukcijskega lesa pravokotnega prečnega prereza po trdnosti - 4. del: Strojno razvrščanje - Nastavitve strojev za razvrščanje pri strojno kontroliranih sistemih
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 4: Maschinelle Sortierung - Einstellungen von Sortiermaschinen für maschinenkontrollierte SystemeStructures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 4: Classement par machine - Réglages pour les systèmes de contrôle par machineTimber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems91.080.20Lesene konstrukcijeTimber structures79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 14081-4:2005+A3:2008SIST EN 14081-4:2005+A3:2008en,fr,de01-oktober-2008SIST EN 14081-4:2005+A3:2008SLOVENSKI
STANDARD
SIST EN 14081-4:2005+A3:2008
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14081-4:2005+A3
March 2008 ICS 79.120.10; 79.040 Supersedes EN 14081-4:2005+A2:2007English Version
Timber structures - Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems
Structures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 4: Classement par machine - Réglages pour les systèmes de contrôle par machine
Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 4: Maschinelle Sortierung - Einstellungen von Sortiermaschinen für maschinenkontrollierte Systeme This European Standard was approved by CEN on 26 August 2005 and includes Amendment 1 approved by CEN on 28 December 2006, Amendment 2 approved by CEN on 13 August 2007 and Amendment 3 approved by CEN on 7 February 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14081-4:2005+A3:2008: ESIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Symbols.4 5 Settings for timber strength grading machines.5 !!!!Bibliography.32
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 3 Foreword This document (EN 14081-4:2005+A3:2008) has been prepared by Technical Committee CEN/TC 124 “Timber structures”, the secretariat of which is held by SFS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008 and conflicting national standards shall be withdrawn at the latest by September 2008. This document includes Amendment 1, approved by CEN on 2006-12-28, Amendment 2, approved by CEN on 2007-08-13 and Amendment 3, approved by CEN on 2008-02-07. This document supersedes EN 14081-4:2005+A2:2007. The start and finish of text introduced or altered by amendment is indicated in the text by tags tags
! ", # $ and % &. Other parts of this European Standard are EN 14081-1, Timber structures - Strength graded structural timber with rectangular cross section -
Part 1: General requirements EN 14081-2, Timber structures - Strength graded structural timber with rectangular cross section -
Part 2: Machine Grading - Additional requirements for initial type testing EN 14081-3, Timber structures - Strength graded structural timber with rectangular cross section -
Part 3: Machine Grading - Additional requirements for factory production control According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 4 1 Scope This European Standard gives settings, derived according to the requirements given in EN 14081-2, for various combinations of strength classes or grades, grading machines and species from particular sources of growth. These settings are only applicable to timber from the sources indicated in the tables. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 336, Structural timber – Sizes, permitted deviations EN 14081-1:2005, Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements EN 14081-2:2005, Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine Grading - Additional requirements for initial type testing 3 Terms and definitions For the purpose of this European Standard the terms and definitions in EN 14081-1:2005 and
EN 14081-2:2005 and the following apply. 3.1
Speed range maximum and minimum throughput speeds appropriate to the critical speed for the derived settings (see 6.2.2 of EN 14081-2:2005). 4 Symbols a deflection (in mm) b width of timber cross section (in mm)
F force (units as stated) I indicating property (units as stated) P pressure (units as stated) t thickness of timber cross section (in mm) Et,mean characteristic mean tensile modulus of elasticity parallel to grain (in N/mm2)
ft,k characteristic tensile strength (in N/mm2)
ρk characteristic value of density (in kg/m3) SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 5
subscripts
n for setting being calculated a actual size measured as the average dimension of a batch 5 Settings for timber strength grading machines %Tables 1 to 9& give settings for certain grades, timber species and types of grading machine. Settings for other grades, species or grading machines shall be added when the relevant information is sent to, and assessed by, CEN/TC 124.
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 6 %Table 1 — Settings for Cook Bolinder (Tecmach) machine types SG-AR, SG-AF and SG-TF Source
country or countries Source mark a
Species Permitted timber sizes b (mm) Grade c or grade combination Model value F Feed speed range (m/min) Comments and additional requirements UK Ireland 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 F = 2,68 F = 2,27 150 max. Minimum temperature of timber at time of grading shall be -10 °C. The following equations shall be used to calculate settings for the target size bn × tn. (NOTE
For timber with a thickness to tolerance class 1, i.e. sawn timber, tn in the following equations is the target tn + 1 mm.)
an = 830,7 tn-1,299 Pn = 4,412 Fn / tn0,61
(bar) ()572739,413n1.701nnn+=ttFbF
Spruce Picea abies Picea sitchensis
C16 F = 1,24 150 max.
C24 C16 F = 2,79 F = 1,90 150 max.
GB IE Pine Pinus nigra Pinus sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C16 F = 1,34 150 max. C27 C16 F = 3,03 F = 1,43 150 max. C24 C16 F = 2,32 F = 2,09 150 max. Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50 60 ≤ bn ≤ 300 C16 F = 0,92 150 max.
a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338. & SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 7 #Table 1 — Settings for Cook Bolinder (Tecmach) machine types SG-AR, SG-AF and SG-TF (continued) Source country or countries Source mark a
Species Permitted timber sizes b (mm) Grade c or grade combination Model value
Feed speed range (m/min) Comments and adjustments for size C18 ƒmod = 20,8 C24 ƒmod = 20,8 C27 ƒmod = 21,8 C30 ƒmod = 28,5 C24 C35 ƒmod = 20,0 ƒmod = 46,5 Estonia Finland Latvia Norway Russia d Sweden Poland
Finland Norway Sweden Latvia EE FI LV NO RU SE PL
FI NO SE LV Spruce Picea abies
Pine Pinus
sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C18 C30 C40 ƒmod = 23,8 ƒmod = 30,6 ƒmod = 54,5 150 max.
Air temperature to be +10 oC min. +35 oC max. Minimum timber temperature to be -10 oC Maximum relative humidity to be 85 % Timber mean moisture content to be > 10 % The following equations shall be used to calculate settings for the target size bn × tn. (NOTE For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm).
Pn = 4,412 Fn / tn0,61
(bar)
Fn
= (5,5I n n bntn3)10-12
(kN)
an = 830,7 tn-1,299
I n = 79.0mod24,022,0f4228nnbt
a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338. d
Settings apply only to timber grown west of the Ural mountain range in Russia. $ SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 8 Table 1 — Settings for Cook Bolinder (Tecmach) machine types SG-AR, SG-AF and SG-TF (continued) Source country or countries Source marka)
Species Permitted timber sizesb) (mm) Gradec) or grade combina-tion Model value
Feed speed Range (m/min) Comments and additional requirements Spain ES Scots pine Pinus Sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C27
C16 F = 2,84
F = 1,71
100 max Minimum temperature of timber at time of grading shall be -10 oC. The following equations shall be used to calculate settings for the target size bn x tn. (Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm). an = 830,7 tn-1,299 Pn = 4,412 Fn / tn0,61 ()735729,413n1.701nnn+=ttFbF
(kN) Spain ES Corsican pine Pinus nigra 40 ≤ tn ≤ 70
100≤bn ≤ 200 C30
C18 Not relevant as all settings shall be calculated using equations in comments column 100 max Minimum temperature of timber at time of grading shall be
-10 oC. The following equations shall be used to calculate settings for the target size bn x tn.
(Note. For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm). an = 830,7 tn-1,299 Pn = 4,412 Fn / tn0,61 FnC30 = (96,2979 – 0,489321tn)anbntn3 / (1,3189433.109 ) FnC18 = (54,4979 – 0,489321tn)anbntn3 / (1,3189433.109 ) a) See 7.3 of EN 14081-1:2005. b) Timber sizes shall be to EN 336. c) Grades prefixed by C are strength classes given in EN 338.
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 9 %Table 2 — Settings for Computermatic and Micromatic machines Model value Source country or countries Source mark a
Species Permitted timber sizes b (mm) Grade cor grade combi-nation Deflection a (mm) Feed speed range (m/min) Comments and additional requirements C24 C16
6,35 7,49 105 max. Spruce Picea abies Picea
sitchensis 35 ≤ tn ≤ 75
60 ≤ bn ≤ 300 C16 13,78 105 max. C24 C16
6,10 8,97 105 max. UK Ireland GB IE Pine Pinus nigra Pinus
sylvestris 35 ≤ tn ≤ 75
60 ≤ bn ≤ 300 C16 12,74 105 max. C27 C16 5,62 11,86 105 max. C24 C16 7,35 8,13 105 max. Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50
60 ≤ bn ≤ 300 C16 18,52 105 max. Minimum temperature of timber at time of grading shall be -10 °C. The following equations shall be used to calculate settings for the target size bn × tn. (NOTE
For timber with a thickness to tolerance class 1, i.e. sawn, tn in the following equations is the target tn + 1 mm.) Actual deflection settings are determined from an/0,19 rounded to the nearest whole number. Refer to calibration tables for machine to convert Force Fn to pressure setting Fn = 0,010 1 bn tn2 ()()91,0109851,07846,000567,071,36nn5nnn+×+=−btttaa a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338.
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 10 Table 2 — Settings for Computermatic and Micromatic machines (continued) Source country or countries Source mark a Species Permitted timber sizes b (mm) Grade c
or grade combination Model value fmod Feed speed range (m/min) Comments and additional requirements Norway NO Sitka spruce Picea Sitchensis 33 < tn <53 88 < bn < 218 C18 C30 27,9 38,8 105 max.
Equation (2) shall be used to calculate settings for the target size tn and bn where tn and bn are target dimensions. Actual deflection setting an shall be rounded up to the nearest whole number. If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt To convert from stress to force Fn use equation (1).
Refer to calibration tables for machine to convert Fn to pressure setting.
20101,0nnntbF⋅⋅=
(1) BITfbtfbtannnnn⋅⋅−⋅⋅⋅=−mod152,0186,0mod152,0814,014,218063 d
(2)
Requirements for grading:
- air temperature: 10 °C to 50 °C; - relative humidity in the air: < 85 %; - timber temperature: > -10 °C; - timber mean moisture content: > 10 %. a
See 7.3 of EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades specified by C are strength classes given in EN 338. d
BIT is a machine constant. & SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 11 #Table 2 — Settings for Computermatic and Micromatic machines (continued) Model value Source country or countries Source mark a Species Permitted timber
sizes b (mm) Grade c or grade combination Deflectiona
(mm) Feed speed range (m/min) Comments and additional requirements C24 9,82 C27 6,21 C30 4,75 C35 3,40 C27 C16 5,85 8,92 C30 C18 4,75 9,82 C30 C24 C18 4,46 5,49 8,92 C35 C24 C18 3,40 5,49 8,92 Finland Norway
Sweden Estonia Latvia Russia d Poland
Finland Norway Sweden Latvia
FI NO SE ES LV RU PL
FI NO SE LV Spruce Picea abies
Pine Pinus sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C40 C27 2,85 5,85 105 max. TR26 is a UK grade for trussed rafters. Its primary characteristic values are:
ƒm,k = 28,3 N/mm², E0,mean = 11 000 N/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. Equation (2) shall be used to calculate settings for the target size tn x bn. where tn and bn are target dimensions. Actual deflection settings an shall be rounded to the nearest whole number. If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt. To convert from stress to force Fn use Equation (1). Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF=
(1)
19,015050500901,0186,0−=nnnnbttaa (2) Requirements for grading: − Air temperature
10 °C to 50 °C − Relative humidity in the air
< 85 % − Timber temperature
> -10 °C − Timber moisture content
> 10 % a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338. d
Settings apply only to timber grown west of the Ural mountain range in Russia. SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 12 Table 2 — Settings for Computermatic and Micromatic machines (continued) Model value Source country or countries Source mark a Species Permitted timber Sizes b (mm) Grade
or grade combinationDeflectiona
(mm) Feed speed range (m/min) Comments and additional requirements 30 ≤ tn ≤ 75 TR26 6,21 105 max. 60 ≤ bn ≤ 300
Finland Norway
Sweden Estonia Latvia Russia c Poland
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV
Spruce Picea abies
Pine Pinus sylvestris
TR26 is a UK grade for trussed rafters. Its primary characteristic values are:
ƒm,k = 28,3 N/mm², E0,mean = 11 000 N/mm², k = 370 kg/m³ Other characteristic values can be calculated from the equations given in EN 384. Equation (2) shall be used to calculate settings for the target size tn x bn. where tn and bn are target dimensions. Actual deflection settings an shall be rounded to the nearest whole number. If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt. To convert from stress to force Fn use Equation (1). Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF=
(1)
19,015050500901,0186,0−=nnnnbttaa (2) Requirements for grading: − Air temperature
10 °C to 50 °C − Relative humidity in the air
< 85 % − Timber temperature
> -10 °C − Timber moisture content
> 10 % a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Settings apply only to timber grown west of the Ural mountain range in Russia. $ SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 13 #Table 3 — Settings for Raute Timgrader machines Source country or countries Source mark a
Species Permitted timber sizes b (mm) Grade c or grade
combination fmod for calc. of settings Comments and additional requirements C40 C30 C24 C18 50,8 40,6 31,3 21,6 C35 C27 C18 43,4 31,7 21,6 C40 C30 C24 C18 50,8 40,6 31,3 21,6 Finland Norway Sweden Estonia. Latvia Russia d Poland
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV Spruce Picea abies
Pine Pinus
sylvestris 30 ≤ tn ≤ 75 60 ≤ bn ≤ 225
C35 C27 C18
43,4 31,7 21,6 Requirements for grading: • air temperature between 10 °C and 50 ºC; • timber temperature greater than -10 ºC; • air relative humidity less than 85 %; • timber mean moisture content greater than 10 %; • feed speed between 48 m/min and 124 m/min.
The following equation shall be used to calculate settings
afbtF727,0mod259,1n749,1nn000524,0=
where Fn is the indicating property in N (to obtain the indicating property in kilopound Fn shall be divided by 9,81), tn is the target thickness in mm, bn is the target width in mm (NOTE
For timber with a thickness to tolerance class 1, i.e. sawn, tn in the above equation is the target tn + 1 mm.) and fmod is given in the 6th column of this table for each grade. a is the pre-set deflection in mm and shall be: a = 1,3 mm for 70 ≤ t ≤ 75 mm a = 1,4 mm
for 61 ≤ t ≤ 69 mm a = 1,5 mm
for 54 ≤ t ≤ 60 mm a = 1,6 mm
for 47 ≤ t ≤ 53 mm a = 1,7 mm
for 44 ≤ t ≤ 46 mm a = 1,8 mm
for 41 ≤ t ≤ 43 mm a = 1,9 mm
for 38 ≤ t ≤ 40 mm a = 2,0 mm
for 36 ≤ t ≤ 37 mm a = 2,1 mm
for 34 ≤ t ≤ 35 mm a = 2,2 mm
for 32 ≤ t ≤ 33 mm a = 2,3 mm
for 30 ≤ t ≤ 31 mm a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338. d
Settings apply only to timber grown west of the Ural mountain range in Russia. $ SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 14 %Table 4a — Settings for Euro-GreComat 702 Source country or countries Source mark a Species Permitted timber
size b [mm] Grade or grade combination Settings Comments and additional requirements Germany DE 30 ≤tn ≤ 50 L36 IP ≥ 34,5 These grades apply to boards for glued laminated timber. Austria AT Spruce Picea abies 95 ≤bn≤ 280L25 34,5 > IP ≥ 22,3 The characteristic values for the grades are: 30 ≤tn ≤ 55 L35 IP ≥ 34,0
L36 L35 L25 L24
Czech Republic CZ Fir Abies alba 80 ≤bn≤ 280L24 34,0 > IP ≥ 21,0 ft,k [N/mm²] 22,0 21,0 14,5 14,0
Et,mean[N/mm²] 13 000 13 000 11 000 11 000
ρρρρk
[kg/m³] 400 400 350 350
Requirements for grading:
- timber temperature greater than 0 °C;
- timber mean moisture content between 7 % and 15 %;
- feed speed between 80 m/min and 300 m/min;
- timber surface planed or sawn.
a
See 7.3 of EN 14081-1:2005. b
Timber size shall be according to EN 336. &
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 15 #Table 4b — Settings for GoldenEye 702 Source country or countries Source mark b Species Permitted timber size a c
[mm] Grade d or grade combination Settings Comments and additional requirements UK GB Sitka spruce 35 ≤ tn ≤ 80 C24 IP ≥ 10 800Requirements for grading: Ireland IE 70 ≤ bn ≤ 260C16 10 800 > IP ≥
6 000- timber temperature greater than 0 °C;
Picea sitchensis
C16 IP ≥
5 200- timber mean moisture content between 10 % and 30 %;
- feed speed not greater than 450 m/min;
- timber surface planed or sawn.
The moisture content shall be measured by a Brookhuis FMI In-line system. Germany DE Spruce 38 ≤ tn ≤ 100C27 IP ≥ 36,0Requirements for grading: Austria AT Picea abies 89 ≤ bn ≤ 250C16 36,0 > IP ≥ 20,1- timber temperature greater than 0 °C; Czech Republic CZ Fir
C24 IP ≥ 34,4- timber mean moisture content between 10 % and 18 %;
Abies alba
C18 34,4 > IP ≥ 26,9- feed speed not greater than 450 m/min;
C24 IP ≥ 34,4- timber surface planed or sawn.
C16 34,4 > IP ≥ 23,6 a
These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. This note is valid for all approved source countries and species for this machine. b
See 7.3 of EN 14081-1:2005. c
Timber size shall be according to EN 336. d
Grades prefixed by C are strength classes given in EN 338.
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 16 Table 4b — Settings for GoldenEye 702 (continued) Source country or countries Source mark b Species Permitted timber
size a c
[mm] Grade or grade combination Settings Comments and additional requirements Germany DE Spruce 30 ≤ tn ≤ 50 L25 IP ≥ 21,6 These grades apply to boards for glued laminated timber. Austria AT Picea abies 95 ≤ bn ≤ 280L17 21,6 > IP ≥ 16,9 The characteristic values for the grades are: Fir
L36 IP ≥ 32,9
L40 L36 L25 L17
Czech Republic CZ Abies alba
L25 32,9 > IP ≥ 26,8 ft,k [N/mm²] 26,0 22,0 14,5 11,0
L17 26,8 > IP ≥ 14,7 Et,mean[N/mm²] 14 000 13 000 11 000 9 000
L40 IP ≥ 39,6 ρρρρk
[kg/m³] 420 400 350 320
L25 39,6 > IP ≥ 20,8
L17 20,8 > IP ≥ 19,1 Requirements for grading:
- timber temperature greater than 0 °C;
- timber mean moisture content between 7 % and 15 %;
- feed speed not greater than 450 m/min;
- timber surface planed or sawn.
a
These settings are approved to permit each piece of timber to be graded as if it is two pieces of timber of smaller widths. The timber is subsequently cut lengthwise into two pieces with the correct grade marked on each piece. This requires the machine to have the appropriate software, and the timber sizes before and after grading, to be as required by that software. This note is valid for all approved source countries and species for this machine. b
See 7.3 of EN 14081-1:2005. c
Timber size shall be according to EN 336. $
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 17 %Table 4b — Settings for GoldenEye 702 (continued) Settings Source country or countries Sourcemark a Species Permitted timber size b (mm) Grade c or grade combinationIP = fmod Comments and additional requirements C40 C30 C18 55,6 40,2 13,5 C30 C18 36,5 13,5 C35 C27 C18 52,3 37,6 13,5 C35 C24 52,3 22,7 C27 C16 35,9 13,5 TR26 C16 29,9 13,5 Finland Norway Sweden Estonia Latvia Russia d Poland FI NO SE ES LV RU PL Spruce Picea abies 35 ≤ tn ≤ 55 90 ≤ bn ≤ 220 C24 13,5 Requirements for grading: - timber mean moisture content between 10 % and 20 %; - timber temperature greater than 0 °C; - timber surface finish planed or sawn; - feed speed not greater than 450 m/min.
The settings for C30-C18 can also be used for TR26-C18
TR26 is a UK grade for trussed rafters. Its primary characteristic values are:
ƒm,k = 28,3 N/mm²;
E0,mean = 11 000 N/mm²;
k = 370 kg/m³. a
See 7.3 of EN 14081-1:2005. b
Timber sizes shall be according to EN 336. c
Grades prefixed by C are strength classes given in EN 338. d
Settings apply only to timber grown west of the Ural mountain range in Russia. & SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 18 #Table 5 — Settings for Euro-GreComat 704 Source country or countries Source mark a Species Permitted timber size b [mm] Grade or grade combination Settings Comments and additional requirements Germany DE Spruce 18 ≤ tn ≤ 55 L40 IP ≥ 40 These grades apply to boards for glued laminated timber. Austria AT Picea abies 80 ≤ bn ≤ 280L35 40 > IP ≥ 31 The characteristic values for the grades are: Fir
L24 31 > IP ≥ 19
L40 L35 L24 L16
Czech Republic CZ Abies alba
L16 19 > IP ≥ 14 ft,k [N/mm²] 26,0 21,0 14,0 10,0
Et,mean[N/mm²] 14 000 13 000 11 000 8 000
ρρρρk
[kg/m³] 420 400 350 350
Requirements for grading:
- timber temperature greater than 0 °C;
- timber mean moisture content between 7 % and 15 %;
- feed speed between 80 m/min and 120 m/min;
- timber surface planed. a
See 7.3 of EN 14081-1:2005. b
Timber size shall be according to EN 336.
SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 19 Table 5 — Settings for Euro-GreComat 704 (continued) Source country or countries Source mark a Species Permitted timber size b [mm] Grade or grade combination Settings Comments and additional requirements LS22 IP ≥ 31 These grades apply to boards for glued laminated timber. LS18 IP ≥ 23 The characteristic values for the grades are: LS15 IP ≥ 14
LS22 LS18 LS15
LS22 LS15 IP ≥ 36 36 > IP ≥ 29 ft,k [N/mm²] 22,0 18,0 14,5
Et,mean[N/mm²] 13 000 12 000 11 000
ρρρρk
[kg/m³] 390 370 350
The density values are not used for the calculation of settings.
Requirements for grading:
- timber temperature greater than 0 °C;
- timber mean moisture content between 7 % and 15 %;
- feed speed between 80 m/min and 120 m/min; Finland Norway Sweden Estonia Latvia Russia c Poland Germany Austria Czech Republic
FI NO SE ES LV RU PL DE AT CZ
Spruce Picea abies
20 ≤≤≤≤ tn ≤≤≤≤ 50 80 ≤≤≤≤ bn ≤≤≤≤ 280
- timber surface planed. a
See 7.3 of EN 14081-1:2005. b
Timber size shall be according to EN 336. c
Settings apply only to timber grown west of the Ural mountain range in Russia. $ SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 20 #Table 6 — Settings for Dynagrade machine (including HC and XHC) Source country or countries Source mark a Species Permitted timber sizes b(mm) Grade c
or grade combinationSettings
I (machine units) Comments and additional requirements C24 4 300 000 C24 C16 5 010 000 4 350 000 C27 5 080 000 C27 C16 5 230 000 4 350 000 C30 6 480 000 C30 C18 6 480 000 4 350 000 C30 C24 6 980 000 4 800 000 C30 C24 C18 6 520 000 5 970 000 4 490 000 C35 C24 C18 7 780 000 5 560 000 5 000 000 C30 C16 6 480 000 4 350 000 C27 C18 5 850 000 5 040 000
Finland, Norway, Sweden, Estonia, Latvia Russia d Poland
Finland Norway Sweden Latvia FI NO SE ES LV RU PL
FI NO SE LV Spruce, Picea abies
Pine Pinus
sylvestris 34 ≤≤≤≤ tn ≤≤≤≤ 75 60 ≤ bn ≤ 300
Actual setting, I is given in machine units and it is not effected by the timber dimensions.
Requirements for grading: − air temperature
10°C to 50 °C; − relative humidity in the air < 85 %; − timber temperature
> -10 °C; − timber mean moisture content between 10 % and 16 %. Dynagrade: − conveyor speed
≤ 1 m/s; − spacing between pieces
≥ 200 mm; − grading speed
≤ 100 pieces/min. Dynagrade HC: − conveyor speed
≤ 1,3 m/s; − spacing between pieces
≥ 225 mm; − grading speed for widths
≤ 250 mm: ≤ 150 pieces/min. Dynagrade XHC: − conveyor speed
≤ 1,3 m/s; − spacing between pieces
≥ 225 mm; − grading speed for width (w) ≤ 100 mm: ≤ 240 pieces/min where 100 < w ≤ 250
grading speed = 78 000/(w+225) pieces/min. Where timber has mean moisture content between 16 % and 20 % with a minimum value of 14 % and a maximum value of 22 % then the settings shall be calculated according to Equation (1) and rounded to 3 significant digits.
III0738,018−= (1)
a
See 7.3 in EN 14081-1:2005.
b
Timber sizes shall be according to EN 336.
c
Grades prefixed by C are strength classes given in EN 338.
d
Settings apply only to timber grown west of the Ural mountain range in Russia. SIST EN 14081-4:2005+A3:2008
EN 14081-4:2005+A3:2008 (E) 21 Table 6 — Settings for Dynagrade machine (including HC and XHC) (continued) Source country or countries Source mark a Species Permitted timber sizes b (mm) Grade c
or grade combinationSettings
I (machine units) Comments and additional requirements C24 4 180 000 C24 C16 5 150 000 4 180 000 C27 4 730 000 C27 C16 5 330 000 4 180 000 C30 5 500 000 C30 C18 5 500 000 4 180 000 C30 C24 6 250 000
...
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