SIST EN 14081-4:2005+A4:2009
(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
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
Lesene konstrukcije - Razvrščanje konstrukcijskega lesa pravokotnega prečnega prereza po trdnosti - 4. del: Strojno razvrščanje - Nastavitve strojev za razvrščanje pri strojno kontroliranih sistemih
General Information
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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+A4:2008SIST EN 14081-4:2005+A4:2009en,fr,de01-april-2009SIST EN 14081-4:2005+A4:2009SLOVENSKI
STANDARD
SIST EN 14081-4:2005+A4:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14081-4:2005+A4
December 2008 ICS 79.120.10; 79.040 Supersedes EN 14081-4:2005+A3:2008 English 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 systèmesde 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, Amendment 3 approved by CEN on 7 February 2008 and Amendment 4 approved by CEN on 20 November 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 14081-4:2008+A4:2008: ESIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (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"""" . 46
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 3 Foreword This document (EN 14081-4:2005+A4:2008) 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 June 2009 and conflicting national standards shall be withdrawn at the latest by June 2009. This document includes Amendment 1, approved by CEN on 2006-12-28, Amendment 2, approved by CEN on 2007-08-13, Amendment 3, approved by CEN on 2008-02-07 and Amendment 4, approved by CEN on 2008-11-20. This document supersedes 'EN 14081-4:2005+A3:2008(. 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+A4:2009
EN 14081-4:2005+A4:2008 (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+A4:2009
EN 14081-4:2005+A4:2008 (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 11& 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+A4:2009
EN 14081-4:2005+A4:2008 (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 Force F (kN) Comments and additional requirements UK Ireland GB IE Spruce
Picea abies Picea sitchensis 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 2,68 2,27 Requirements for grading: - Air temperature between + 10 °C and + 35 °C; - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 150 m/min.
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.)
an = 830,7 tn-1,299
(mm)
Pn = 4,412 Fn / tn0,61
(bar)
()572739,413n1.701nnn+=ttFbF
(kN) C16 1,24 Pine
Pinus nigra Pinus sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 2,79 1,91 C16 1,34 Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50 60 ≤ bn ≤ 300 C27 C16 3,03 1,43 C24 C16 2,32 2,09 C16 0,92 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+A4:2009
EN 14081-4:2005+A4:2008 (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 combinationModel value
ƒmod Comments and adjustments for size 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 20,8 Requirements for grading: - Air temperature between + 10 °C and + 35 °C; - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 150 m/min.
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 C24 20,8 C27 21,8 C30 28,5 C35 C24 46,5 20,0 C40 C30 C18 54,5 30,6 23,8 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+A4:2009
EN 14081-4:2005+A4:2008 (E) 8 Table 1 — Settings for Cook Bolinder (Tecmach) machine types SG-AR, SG-AF and SG-TF (continued) Source country or countries Source mark a Species Permitted timber sizes b (mm) Grade c or grade combinationModel value Force F (kN) Comments and adjustments for size Spain ES Scots pine Pinus sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C27 C16 2,84 1,71 Requirements for grading: - Air temperature between + 10 °C and + 35 °C; - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 100 m/min.
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.) an = 830,7 tn-1,299 Pn = 4,412 Fn / tn0,61 ()572739,413n1.701nnn+=ttFbF 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 Requirements for grading: - Air temperature between + 10 °C and 35 °C; - Relative humidity in the air < 85 %; - Timber temperature > - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 100 m/min.
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.) an = 830,7 tn-1,299 Pn = 4,412 Fn / tn0,61 FnC30 = (96,297 9 – 0,489 321 tn)anbntn3 / (1,318 943 3 × 109) FnC18 = (54,497 9 – 0,489 321 tn)anbntn3 / (1,318 943 3 × 109) 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+A4:2009
EN 14081-4:2005+A4:2008 (E) 9 Table 2 — Settings for Computermatic and Micromatic machines Source country or countries Source mark a Species Permitted timber sizes b (mm) Grade c or grade combination Model value Deflection a (mm)Comments and additional requirements UK Ireland GB IE Spruce Picea abies Picea
sitchensis 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 6,35 7,49 Requirements for grading: - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 105 m/min.
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.)
Fn = 0,010 1 bn tn2
(N)
()()91,0109851,07846,000567,071,36nn5nnn+×+=−btttaa
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 C16 13,78 Pine Pinus nigra Pinus
sylvestris 35 ≤ tn ≤ 75 60 ≤ bn ≤ 300 C24 C16 6,10 8,90 C16 12,74 Chile CL Radiata pine Pinus radiata 35 ≤ tn ≤ 50 60 ≤ bn ≤ 300 C27 C16 5,62 11,86 C24 C16 7,35 8,13 C16 18,52 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+A4:2009
EN 14081-4:2005+A4:2008 (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 IP = fmod Comments and additional requirements Norway NO Sitka spruce Picea Sitchensis 33 ≤ tn ≤ 53 88 ≤ bn ≤ 218 C30 C18 38,8 27,9 Requirements for grading: - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ -10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 105 m/min.
The following equations shall be used to calculate settings for the target size bn × tn where bn and tn are target dimensions.
Refer to calibration tables for machine to convert Fn to pressure setting.
20101,0nnntbF⋅⋅=
(N)
⋅⋅−⋅⋅⋅=−mod152,0186,0mod152,0814,014,218063fbtfbtannnnn
(Bits)
Actual deflection setting an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19 mm).
If the actual thickness ta exceeds the target thickness tn by more than 1 mm then the pressure shall be increased by 3natt a
See 7.3 in 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.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 11 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 Deflection a(mm) Comments and additional requirements 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 ≤ 300C24 9,82 Requirements for grading: - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ -10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 105 m/min.
The following equations shall be used to calculate settings for the target size bn × tn where bn and tn are target dimensions.
Refer to calibration tables for machine to convert Fn to pressure setting.
20101,0nnntbF=
(N)
19,015050500901,0186,0−=nnnnbttaa
(Bits)
Actual deflection settings an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19 mm).
If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt 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 4,94 7,96 C40 C27 2,83 5,49 a
See 7.3 in 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
Settings apply only to timber grown west of the Ural mountain range in Russia.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 12 Table 2 — Settings for Computermatic and Micromatic machines (continued) Source country or countries Source mark a Species Permitted timber sizes b (mm) Grade or grade combination Model value Deflection a(mm) Comments and additional requirements 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 30 ≤ tn ≤ 75 60 ≤ bn ≤ 300 TR26 6,21 Requirements for grading: - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Maximum feed speed: 105 m/min.
The following equations shall be used to calculate settings for the target size bn × tn where bn and tn are target dimensions. Refer to calibration tables for machine to convert Fn to pressure setting. 20101,0nnntbF=
(N)
19,015050500901,0186,0−=nnnnbttaa
(Bits)
Actual deflection settings an shall be rounded to the nearest whole number of Bits (Bits are units of 0,19 mm).
If the actual thickness ta exceeds the target thickness tn more than 1 mm then the pressure shall be increased by 3natt.
TR26 is a UK grade for trussed rafters. Its primary characteristic values are: ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³. Other characteristic values can be calculated from the equations given in EN 384.
a
See 7.3 in EN 14081-1:2005. b
Timber sizes shall be to EN 336. c
Settings apply only to timber grown west of the Ural mountain range in Russia. SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (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 Model value
IP = fmod Comments and additional requirements Finland Norway Sweden Estonia. Latvia Russia d Poland
FI NO SE ES LV RU PL
Spruce Picea abies
30 ≤ tn ≤ 50 60 ≤ bn ≤ 225
C45 C30 C18 56,5 34,1 22,0 Requirements for grading: - Air temperature between + 10 °C and + 50 °C; - Relative humidity in the air ≤ 85 %; - Timber temperature ≥ - 10 °C; - Timber mean moisture content > 10 %; - Feed speed between 48 m/min and 124 m/min; - Cupped timber shall not be graded.
The following equation shall be used to calculate settings: afbtF630,0mod740,0n093,2nn002792,0= where Fn is the indicating property in N (to obtain the indicating property in kilopond 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 = 1,6 mm
for 47 mm ≤ tn ≤ 50 mm a = 2,0 mm
for 36 mm ≤ tn ≤ 37 mm a = 1,7 mm
for 44 mm ≤ tn ≤ 46 mm a = 2,1 mm
for 34 mm ≤ tn ≤ 35 mm a = 1,8 mm
for 41 mm ≤ tn ≤ 43 mm a = 2,2 mm
for 32 mm ≤ tn ≤ 33 mm a = 1,9 mm
for 38 mm ≤ tn ≤ 40 mm a = 2,3 mm
for 30 mm ≤ tn ≤ 31 mm
The pre-set pressure shall be 23 bar.
The settings for C35-TR26-C18 can also be used for C35-C24-C18.
The characteristic values for the TR26 grade are:
ƒm,k = 28,3 N/mm², E0,mean = 11,0 kN/mm², k = 370 kg/m³. Other characteristic values can be calculated from the equations given in EN 384. C40 C30 C18 53,4 34,3 22,0 C35 TR26 C18 44,6 34,1 22,0 Finland Norway Sweden Latvia Russia d
FI NO SE LV RU Pine Pinus
sylvestris 30 ≤ tn ≤ 50 60 ≤ bn ≤ 225
C45 C30 C18 56,5 34,1 22,0 C40 C30 C18 53,4 34,3 22,0 C35 TR26 C18 44,6 34,1 22,0 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+A4:2009
EN 14081-4:2005+A4:2008 (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 Model value
IP = fmod Comments and additional requirements Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 30 ≤ tn ≤ 50 95 ≤ bn ≤ 280 L36 L25 34,5 22,3 Requirements for grading: - Timber temperature > 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.
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L36 L35 L25 L24 ft,k (N/mm²) 22,0 21,0 14,5 14,0 Et,mean (kN/mm²) 13,0 13,0 11,0 11,0 ρk (kg/m³) 400 400 350 350 30 ≤ tn ≤ 55 80 ≤ bn ≤ 280 L35 L24 34,0 21,0 a
See 7.3 in EN 14081-1:2005. b
Timber size shall be according to EN 336.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (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 Model value
IP Comments and additional requirements UK Ireland GB IE Sitka spruce Picea sitchensis 35 ≤ tn ≤ 80 70 ≤ bn ≤ 260 C24 C16 Emod = 10 800 Emod = 6 000 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 10 % and 30 %; - Maximum feed speed: 450 m/min; - Timber surface planed or sawn.
The moisture content shall be measured by a Brookhuis FMI In-line system. C16 Emod = 5 200 Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 38 ≤ tn ≤ 100 89 ≤ bn ≤ 250 C27 C16 fmod = 36,0 fmod = 21,4 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 10 % and 18 %; - Maximum feed speed: 450 m/min; - Timber surface planed or sawn. C24 C18 fmod = 34,4 fmod = 30,8 C24 C16 fmod = 34,4 fmod = 29,8 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. The sizes of the two pieces after splitting shall be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b
See 7.3 in EN 14081-1:2005. c
Timber size shall be to EN 336. d
Grades prefixed by C are strength classes given in EN 338.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (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 Model value
IP = fmod Comments and additional requirements Germany Austria Czech Republic DE AT CZ Spruce Picea abies
Fir Abies alba 30 ≤ tn ≤ 50 95 ≤ bn ≤ 280 L25 L17 21,6 16,9 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 7 % and 15 %; - Maximum feed speed: 450 m/min - Timber surface planed or sawn.
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L40 L36 L25 L17 ft,k (N/mm²) 26,0 22,0 14,5 11,0 Et,mean (kN/mm²) 14,0 13,0 11,0 9,0 ρk (kg/m³) 420 400 350 320 L36 L25 L17 32,9 26,8 14,7 L40 L25 L17 39,6 20,8 19,1 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. The sizes of the two pieces after splitting shall be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b
See 7.3 in EN 14081-1:2005. c
Timber size shall be according to EN 336.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 17 Table 4b — Settings for GoldenEye 702 (continued) Source country or countries Source mark b Species Permitted timber size a c(mm) Grade or grade combinationModel value Comments and additional requirements IPf = fmod IPE = Emod IPρ = ρmod Germany Austria Czech Republic Switzerland DE AT CZ
CH Spruce Picea abies
Fir Abies alba 26 ≤ tn ≤ 66 63 ≤ bn ≤ 319 L22 6,8 5 200 305 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 7 % and 15 %; - Maximum feed speed: 450 m/min; - Timber surface planed or sawn.
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
L40 L36 L30 L27 L25 ft,k (N/mm²) 26,0 22,0 18,0 16,0 14,5 Et,mean (kN/mm²) 14,0 13,0 12,0 11,5 11,0 ρk (kg/m³) 420 400 380 370 350
L22 L17 ft,k (N/mm²) 13,0 11,0 Et,mean (kN/mm²) 10,0 9,0 ρk (kg/m³) 340 320
L25 16,9 3 900 334 L27 L17 21,0 12,4 4 000 6 800 377 305 L30 L17 25,4 6,8 7 900 5 200 390 305 L40 L25 39,8 19,1 11 600 8 600 434 322 L36 L25 L17 32,3 20,9 16,4 10 100 8 900 7 900 412 331 305 L40 L30 L17 39,8 31,2 6,8 11 600 9 400 5 200 434 385 305 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. The sizes of the two pieces after splitting shall be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b
See 7.3 in EN 14081-1:2005. c
Timber size shall be to EN 336.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 18 Table 4b — Settings for GoldenEye 702 (continued) Source country or countries Sourcemark b Species Permitted timber size a c (mm) Grade d orgrade combinationModel value
IP = fmod Comments and additional requirements Finland Norway Sweden Estonia Latvia Russia e Poland FI NO SE ES LV RU PL Spruce Picea abies 35 ≤ tn ≤ 55 90 ≤ bn ≤ 220 C40 C30 C18 55,6 40,2 13,5 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 10 % and 20 %; - Timber surface finish planed or sawn; - Maximum feed speed: 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 = 11,0 kN/mm², k = 370 kg/m³.
Other characteristic values can be calculated from the equations given in EN 384. 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 C24 13,5 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. The sizes of the two pieces after splitting shall be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b
See 7.3 in EN 14081-1:2005. c
Timber sizes shall be according to EN 336. d
Grades prefixed by C are strength classes given in EN 338. e
Settings apply only to timber grown west of the Ural mountain range in Russia.
SIST EN 14081-4:2005+A4:2009
EN 14081-4:2005+A4:2008 (E) 19 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 Model value Comments and additional requirements fmod Emod ρmod Finland Norway Sweden Estonia Latvia Russia d Poland FI NO SE ES LV RU PL Spruce Picea abies 34 ≤ tn ≤ 55 90 ≤ bn ≤ 220 LD26 LD18 LD11 35,6 23,8 9,0 11 800 10 300 7 000 407 365 315 Requirements for grading: - Timber temperature > 0 °C; - Timber mean moisture content between 7 % and 15 %. The moisture content of the individual timber pieces shall not deviate more than ± 4 % from the mean value; - Maximum feed speed 450 m/min for X-ray part; - Timber surface planed or sawn.
These grades apply to timber where tensile strength controls the design.
The characteristic values for the grades are:
LD26 LD22 LD18 LD15 LD11 ft,k N/mm2 26,0 22,0 18,0 14,5 11,0 Et,mean kN/mm2 14,0 13,0 12,0 11,0 9,0 ρk kg/m3 410 390 370 350 320
LD26 LD15 35,6 9,5 11 800 7 500 426 325 LD22 LD15 27,3 14,3 10 800 10 000 385 353 LD22 LD11 27,3 9,0 10 800 7 000 385 315 LD18 10,0 8 000 356 LD15 9,5 7 500 325 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. The sizes of the two pieces after splitting shall be within the permitted timber size. This note is valid for all approved source countries and species for this machine. b
See 7.3 in EN 14081-1. c
Timber size shall be to EN 336.
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