SIST EN 10219-2:2006
(Main)Cold formed welded structural hollow sections of non-alloy and fine grain steels - Part 2: Tolerances, dimensions and sectional properties
Cold formed welded structural hollow sections of non-alloy and fine grain steels - Part 2: Tolerances, dimensions and sectional properties
This part of EN 10219 specifies tolerances for cold formed welded circular, square and rectangular structural hollow sections, manufactured in wall thicknesses up to 40 mm, in the following size ranges:
Circular: Outside diameters up to 2 500 mm
Square: Outside dimensions up to 500 mm x 500 mm
Rectangular: Outside dimensions up to 500 mm x 300 mm
The formulae for calculating sectional properties of sections manufactured to the dimensional tolerances of this standard, to be used for the purposes of structural design, are given in Annex B.
Dimensions and sectional properties for a limited range of sizes are given in Annex C.
Technical delivery requirements are specified in EN 10219-1.
NOTE The designation of the sections' major axis (yy) and its minor axis (zz) align with the axis designation used for structural design in the structural Eurocodes.
Kaltgefertigte geschweißte Hohlprofile für den Stahlbau aus unlegierten Baustählen und aus Feinkornbaustählen - Teil 2: Grenzabmaße, Maße und statische Werte
Dieser Teil der EN 10219 legt die Anforderungen an die Grenzabmaße und Formtoleranzen von kaltgefertigten geschweißten Hohlprofilen mit kreisförmigem, quadratischem oder rechteckigem Querschnitt für den Stahlbau in Wanddicken bis 40 mm innerhalb folgender Maßbereiche fest:
Kreisförmige Profile: Außendurchmesser bis 2 500 mm;
Quadratische Profile: Außenmaße bis 500 mm 500 mm;
Rechteckige Profile: Außenmaße bis 500 mm 300 mm.
Die Gleichungen zur Berechnung der statischen Werte für die Auslegung von Konstruktionen aus Hohlprofilen, die mit den in dieser Norm festgelegten Grenzabmaßen und Formtoleranzen gefertigt wurden, werden in Anhang B angegeben.
Die Maße und statischen Werte für eine Reihe von Standardgrößen werden in Anhang C angegeben.
Wegen der technischen Lieferbedingungen siehe EN 10219-1.
ANMERKUNG Die Bezeichnung der Profilhauptachse (yy) und -nebenachse (zz) entspricht den Achsenbezeichnungen, die in den Eurocodes für die Auslegung von Stahlkonstruktionen verwendet werden.
Profils creux de construction soudés, formés a froid en aciers non alliés et a grains fins - Partie 2 : Tolérances, dimensions et caractéristiques de profil
La présente partie de l’EN 10219 spécifie les tolérances pour les profils creux de construction soudés, formés a froid circulaires, carrés ou rectangulaires, fabriqués en épaisseur jusqu’a 40 mm, dans les gammes de dimensions suivantes :
Circulaire : diametre extérieur jusqu’a a 2 500 mm.
Carré : dimensions extérieures jusqu’a 500 mm x 500 mm.
Rectangulaire : dimensions extérieures jusqu’a 500 mm x 300 mm.
Les formules pour le calcul des caractéristiques de profil pour les profils fabriqués aux tolérances dimensionnelles de la présente norme, a utiliser pour les besoins de la conception de structures, sont données en Annexe B.
Les dimensions et les caractéristiques de profil pour une gamme limitée de dimensions sont données a l’Annexe C.
Les conditions techniques de livraison sont spécifiées dans l’EN 10219-1.
NOTE La désignation de l’axe principal de profils (yy) et leur axe secondaire (zz) est alignée sur la désignation des axes utilisée pour la conception et le calcul des structures dans les Eurocodes structuraux.
Hladno oblikovani varjeni votli konstrukcijski profili iz nelegiranih in drobnozrnatih jekel - 2. del: Mere, mejni odstopki in značilnosti profilov
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kaltgefertigte geschweißte Hohlprofile für den Stahlbau aus unlegierten Baustählen und aus Feinkornbaustählen - Teil 2: Grenzabmaße, Maße und statische WerteProfils creux de construction soudés, formés a froid en aciers non alliés et a grains fins - Partie 2 : Tolérances, dimensions et caractéristiques de profilCold formed welded structural hollow sections of non-alloy and fine grain steels - Part 2: Tolerances, dimensions and sectional properties77.140.70Jekleni profiliSteel profiles77.140.45Nelegirana jeklaNon-alloyed steelsICS:Ta slovenski standard je istoveten z:EN 10219-2:2006SIST EN 10219-2:2006en01-julij-2006SIST EN 10219-2:2006SLOVENSKI
STANDARDSIST EN 10219-2:19981DGRPHãþD
SIST EN 10219-2:2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10219-2April 2006ICS 77.140.75Supersedes EN 10219-2:1997
English VersionCold formed welded structural hollow sections of non-alloy andfine grain steels - Part 2: Tolerances, dimensions and sectionalpropertiesProfils creux pour la construction soudés, formés à froid enaciers non alliés et à grains fins - Partie 2 : Tolérances,dimensions et caractéristiques de profilKaltgefertigte geschweißte Hohlprofile für den Stahlbau ausunlegierten Baustählen und aus Feinkornbaustählen - Teil2: Grenzabmaße, Maße und statische WerteThis European Standard was approved by CEN on 16 March 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10219-2:2006: ESIST EN 10219-2:2006
EN 10219-2:2006 (E) 2 Contents Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Symbols.4 5 Information to be obtained by the manufacturer.5 6 Tolerances.5 7 Measurement of size and shape.8 7.1 General.8 7.2 Outside dimensions.8 7.3 Thickness.8 7.4 Out-of-roundness.9 7.5 Concavity and convexity.9 7.6 Squareness of sides.10 7.7 External corner profile.11 7.8 Twist.11 7.9 Straightness.12 8 Dimensions and sectional properties.12 Annex A (informative)
Additional tolerances for piling tube.14 A.1 General.14 A.2 Out of roundness tolerance.14 A.3 Accidental eccentricity tolerance.15 A.4 Dimple tolerance.17 Annex B (normative)
Formulae for the calculation of sectional properties.20 B.1 General.20 B.2 Circular hollow sections.20 B.3 Rectangular, or square, hollow sections.21 Annex C (normative)
Sectional properties for a limited range of standard sizes.24 Bibliography.36
SIST EN 10219-2:2006
EN 10219-2:2006 (E) 3 Foreword This European Standard (EN 10219-2:2006) has been prepared by Technical Committee ECISS/TC 10 “Structural steels - Grades and qualities”, the secretariat of which is held by NEN. 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 October 2006, and conflicting national standards shall be withdrawn at the latest by October 2006. This European Standard supersedes EN 10219—2:1997. This standard consists of the following parts under the general title 'Cold formed welded structural hollow sections of non-alloy and fine grain steels': − Part 1: Technical delivery conditions − Part 2: Tolerances, dimensions and sectional properties It forms part of a series of standards on hollow sections together with EN 10210-1 and 2, which are also under revision. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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 10219-2:2006
EN 10219-2:2006 (E) 4
1 Scope This part of EN 10219 specifies tolerances for cold formed welded circular, square and rectangular structural hollow sections, manufactured in wall thicknesses up to 40 mm, in the following size ranges: Circular: Outside diameters up to 2 500 mm Square: Outside dimensions up to 500 mm x 500 mm Rectangular: Outside dimensions up to 500 mm x 300 mm
The formulae for calculating sectional properties of sections manufactured to the dimensional tolerances of this standard, to be used for the purposes of structural design, are given in Annex B.
Dimensions and sectional properties for a limited range of sizes are given in Annex C. Technical delivery conditions are specified in EN 10219-1. NOTE The designation of the sections' major axis (yy) and its minor axis (zz) align with the axis designation used for structural design in the structural Eurocodes. 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 10219-1:2006, Cold formed welded structural hollow sections of non-alloy and fine grain steels — Part 1: Technical delivery conditions 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 10219-1:2006 apply. 4 Symbols For the purposes of this European Standard, the symbols defined in Table 1 apply. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 5 Table 1 — Symbols and definitions Symbol Unit Definition A cm2 Cross-sectional area As m2/m Superficial area per metre length B mm Specified side dimension of a square hollow section. Specified dimension of the shorter side of a rectangular hollow section C1/C2 mm Length of corner region of a square or rectangular hollow section Ct cm3 Torsional modulus constant D mm Specified outside diameter of a circular hollow section Dmax/Dmin mm The maximum and minimum outside diameter of a circular hollow section measured in the same plane e mm Deviation from straightness H mm Specified dimension of the longer side of a rectangular hollow section I cm4 Second moment of area It cm4 Torsional inertia constant (polar moment of inertia in the case of circular hollow sections only) i cm Radius of gyration L mm Length M kg/m Mass per unit length O % Out-of-roundness R mm External corner radius of a square or rectangular hollow section T mm Specified thickness V mm Total measured twist V1 mm Twist measured at one end of a section Wel cm3 Elastic section modulus Wpl cm3 Plastic section modulus x1 mm Concavity of a side of a square or rectangular hollow section x2 mm Convexity of a side of a square or rectangular hollow section yy — Axis of cross-section, major axis of a rectangular hollow section zz — Axis of cross-section, minor axis of a rectangular hollow section θ º Angle between adjacent sides of a square or rectangular hollow section
5 Information to be obtained by the manufacturer The following mandatory information from this part of EN 10219 shall be obtained by the manufacturer at the time of enquiry and order. a) The type of length, length range or length (see Table 4). b) The dimensions (see Clause 8). NOTE This information is included in the list of information to be obtained by the manufacturer contained in EN 10219-1. 6 Tolerances 6.1 Tolerances shall not exceed the values given in Table 2 for shape and mass, Table 3 for external corner profiles, Table 4 for manufacturer's delivered length and Table 5 for the height of the internal and external weld bead of submerged arc welded hollow sections. 6.2 The internal corners of square and rectangular hollow sections shall be rounded. NOTE
The internal corner profile is not specified. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 6 6.3 Additional tolerances for out-of-roundness, accidental eccentricity and dimples may be applied to tubes of diameter ≥ 900 mm and D/T ≥ 50 when they are to be used as bearing piles or primary elements in combined walls in accordance with ENV 1993-5. In order for these additional tolerances to be applied the fabrication tolerance quality class, A, B, or C should be agreed. See Annex A. Table 2 — Tolerances on shape and mass Characteristic Circular hollow sections Square and rectangular hollow sections Outside dimensions (D, B and H) ± 1 % with a minimum of ± 0,5 mm and a maximum of ±1 0 mm Side length mm Tolerance
H, B <100 ± 1 % with a minimum of ± 0,5 mm
100 ≤ H, B ≤ 200 ± 0,8 %
H,B > 200 ± 0,6 % Thickness (T) For D ≤ 406,4 mm: T
≤ 5 mm ± 10 % T >
5 mm ± 0,5 mm For D > 406,4 mm:
± 10 % with a maximum of ± 2 mm T ≤ 5 mm ± 10% T > 5 mm ± 0,5 mm Out-of-roundness (O) 2 % for hollow sections having a diameter to thickness ratio not exceeding 100 a
— Concavity/convexity (x1, x2) b
— Max. 0,8 % with a minimum of 0,5 mm Squareness of side (θ)
— 90° ± 1° External corner profile (C1, C2 or R) — See Table 3 Twist (V) — 2 mm plus 0,5 mm/m length Straightness (e) 0,20 % of total length and 3 mm over any 1 m length 0,15 % of total length and 3 mm over any 1 m length Mass per unit length (M) ± 6 % on individual delivered lengths a Where the diameter to thickness ratio exceeds 100 the tolerance on out-of-roundness shall be agreed. b The tolerance on convexity and concavity is independent of the tolerance on outside dimensions.
SIST EN 10219-2:2006
EN 10219-2:2006 (E) 7 Table 3 — Tolerances on external corner profiles Dimensions in millimetres Thickness T
External corner profile C1, C2 or R a
T ≤ 6 1,6T to 2,4T 6 < T ≤ 10 2,0T to 3,0T 10 < T 2,4T to 3,6T a The sides need not be tangential to the corner arcs.
Table 4 — Tolerances on manufacturer's delivered length Dimensions in millimetres Type of length a
Range of length or length L
Tolerance Random length 4 000 < L ≤ 16 000 with a range of 2 000 per order item
10 % of sections supplied may be below the minimum for the ordered range but not shorter than 75 % of the minimum range length Approximate length
≥ 4 000 500+mm <6 000 50+mm 6 000 ≤ L ≤ 10 000 150+mm Exact length b
>10 000 50+ mm +1 mm/m a The manufacturer shall establish at the time of enquiry and order the type of length required and the length range or length. b Common lengths available are 6 m and 12 m.
SIST EN 10219-2:2006
EN 10219-2:2006 (E) 8
Table 5 — Tolerance on height of internal and external weld bead for submerged arc welded hollow sections Dimensions in millimetres Thickness, T Maximum weld bead height ≤14,2 3,5 >14,2 4,8
7 Measurement of size and shape 7.1 General All external dimensions, including out-of-roundness, shall be measured at a distance from the end of the hollow section of not less than D for circular sections, B for square sections or H for rectangular sections, with a minimum of 100 mm. 7.2 Outside dimensions For circular hollow sections the diameter (D) shall be measured either directly, e.g. using a calliper gauge, or by circumference tape at the discretion of the manufacturer. The limiting cross-sectional positions for measuring B and H for square and rectangular hollow sections are shown in Figure 1. 7.3 Thickness The thickness (T) shall be measured at a position not less than 2T from the weld. The limiting cross-sectional positions for measuring the thickness of square and rectangular hollow sections are shown in Figure 1. NOTE Thickness is normally measured within a distance of half the outside diameter or half the dimension of the longer side from the end of the section. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 9
Dimensions in millimetres C51C2H , BTB5aa a This dimension is a maximum when measuring B or H and a minimum when measuring T. Figure 1 — Limiting cross-sectional positions for measuring the dimensions B, H and T for square or rectangular hollow sections 7.4 Out-of-roundness The out-of-roundness (O) of a circular hollow section shall be calculated from the following equation, but see Annex A for piling tube. ()100%minmax×−=DDDO 7.5 Concavity and convexity The concavity (x1) or the convexity (x2) of the sides of a square or rectangular hollow section shall be measured as shown in Figure 2. The percentage concavity or convexity shall be calculated as follows: %100%;100%;100%;1002121××××HxHxBxBx
where B and H are the dimensions of the sides containing the concavity x1 or the convexity x2. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 10 C
, C12B , HBAx1x1x A B2C
, C122x Figure 2 — Measurement of concavity/convexity of square or rectangular hollow sections 7.6 Squareness of sides The deviation from squareness of the sides of a square or rectangular hollow section shall be measured as the difference between 90º and θ as shown in Figure 3. θ Figure 3 — Squareness of sides of square or rectangular hollow sections SIST EN 10219-2:2006
EN 10219-2:2006 (E) 11 7.7 External corner profile 7.7.1 The external corner profile of a square or rectangular hollow section shall be measured according to 7.7.2 or 7.7.3 at the discretion of the manufacturer. 7.7.2 The corner arc shall be measured with a radius gauge. 7.7.3 The distance between the intersection of the flat side and the corner arc and the intersection of the projections of the flat sides to the corner (C1 and C2 in Figure 4) shall be measured. c1c2 AAR Figure 4 — Outside corner profile of square or rectangular hollow sections 7.8 Twist 7.8.1 The twist (V) in a square or rectangular hollow section shall be determined in accordance with 7.8.2 or 7.8.3 at the discretion of the manufacturer. 7.8.2 The hollow section shall be placed on a horizontal surface with one side at one end pressed flat against the surface. At the opposite end of the hollow section the difference in height of the two lower corners from the horizontal surface (see Figure 5) shall be determined. v Figure 5 — Twist of square or rectangular hollow sections 7.8.3 The twist shall be measured with a spirit level and micrometer gauge (screw). The reference length of the spirit level shall be the distance between the intersection of the flat sides and the corner arcs (see Figure 6). The twist V is the difference between the values V1 (see Figure 6) measured at each end of the hollow section. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 12 1V12 Key 1 Spirit level 2 H for rectangular sections, B for square sections Figure 6 — Measurement of twist 7.9 Straightness The deviation from straightness (e) of the total length of a hollow section shall be measured at the point of maximum departure of the hollow section from a straight line connecting its two ends, as shown in Figure 7 where L is the manufacturer's delivered length. The percentage deviation from straightness shall be calculated as follows: %100×Le In addition the local deviation (e) from straightness of a hollow section, measured at any point along its length from a straight line length L of 1 m, shall be not more than 3 mm.
eL Figure 7 — Measurement of deviation from straightness 8 Dimensions and sectional properties The nominal sectional properties of hollow sections within the scope of this part of EN 10219 and manufactured to the dimensional tolerances of this standard, required for the purposes of structural design, shall be calculated in accordance with Annex B. The sectional properties for a limited range of standard sizes of cold formed hollow sections are given in Table C.1 for circular sections, Table C.2 for square sections and Table C.3 for rectangular sections. These sectional properties were calculated from the formulae given in Annex B. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 13 NOTE Not all sizes and thicknesses shown in Tables C.1, C.2 and C.3 are available from all manufacturers and the user is recommended to check availability. Other sizes and thicknesses within the scope of this standard may be available.
SIST EN 10219-2:2006
EN 10219-2:2006 (E) 14 Annex A (informative)
Additional tolerances for piling tube A.1 General This annex contains guidance on additional tolerances that can be applied to tubes when they are to be used as bearing piles or primary elements in combined walls in accordance with ENV 1993-5. These requirements are generally relevant to tubes of diameter ≥ 900 mm and D/T ≥ 100. For verification of tubular piles subject to shell buckling, ENV 1993-5: Piling refers to ENV 1993-1-6. Shell buckling is partly governed by geometrical imperfections of the shell due to out-of-roundness, accidental eccentricity and dimples. ENV 1993-1-6 specifies limits for each of these geometrical imperfections, based on the concept of fabrication quality classes.
Details of how to assess out-of-roundness, accidental eccentricity and dimples, and the recommended maximum permitted values for each fabrication quality class, are given in A.2, A.3 and A.4. NOTE 1 See ENV 1993-1-6 for further details of fabrication tolerance quality classes, their design implications and for definitions and use of symbols. NOTE 2 The values of certain parameters, given in Tables A.1, A.2 and A.3 may be subject to change by national application of ENV 1993-1-6.
Nationally determined parameters will be given in the relevant National Annex of ENV 1993-1-6. A.2 Out of roundness tolerance Out-of-roundness of a tubular pile is assessed in terms of the parameter Ur the difference between the maximum and minimum values of the measured internal diameter, relative to the nominal inside diameter, see Figure A.1, given by: Ur = nomminmaxddd−
Where: dmax is the maximum measured internal diameter; dmin is the minimum measured internal diameter; dnom is the nominal inside diameter (d = D – 2T, see B.2). An appropriate number of diameters should be measured in order to identify the maximum and minimum values. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 15 dmindmaxdnom Figure A.1 — Assessment of dmin and dmax and relationship to d
The out-of-roundness parameter Ur should satisfy the condition:
Ur ≤ Ur, max where:
Ur, max is the maximum permitted value for the out-of-roundness parameter. Recommended values for each fabrication tolerance quality class are given in Table A.1. Table A.1 — Maximum permitted values for out-of-roundness parameter Ur, max Dimensions in mm Diameter range d ≤ 500 500 < d < 1250 1250 ≤ d Fabrication tolerance quality class Description Value of Ur max a Class A Excellent 0,14 0,007+0,0093 (1,25 - d) 0,007 Class B High 0,02 0,010+0,0133 (1,25 - d) 0,01 Class C Normal 0,03 0,015+0,020 (1,25 - d) 0,015 a The values of this parameter may be subject to change by national application of ENV 1993-1-6.
If in doubt, reference should be made to the relevant National Annex of ENV 1993-1-6.
A.3 Accidental eccentricity tolerance Accidental eccentricity, the unintentional eccentricity due to misalignment of the tube walls at horizontal joints, is assessed in terms of the parameter Ue given by:
Ue = Tea SIST EN 10219-2:2006
EN 10219-2:2006 (E) 16 where: ea is the accidental eccentricity between the mid points of the tube walls at the joint, compared to their normal thickness; T is the tube wall thickness. NOTE For joints involving tubes of different thicknesses, it is recommended to refer to ENV 1993-1-6. TTea Figure A.2 — Measurement of tube wall eccentricity (ea) The accidental eccentricity ea should satisfy the condition: ea ≤ ea, max where:
ea, max is the maximum permitted accidental eccentricity. Recommended values for each fabrication tolerance quality class are given in Table A.2. The accidental eccentricity parameter Ue should satisfy the condition:
Ue ≤ Ue, max where: Ue, max is the maximum permitted value for the accidental eccentricity parameter. Recommended values for each fabrication tolerance quality class are given in Table A.2. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 17
Table A.2 — Maximum permitted values for accidental eccentricity parameter Ue, max and for accidental eccentricity ea, max
Dimensions in mm Fabrication tolerance quality class Description Ue, max a ea, max a Class A Excellent 0,14 2 Class B High 0,2 3 Class C Normal 0,3 4 a The values of these parameters may be subject to change by national application of ENV 1993-1-6.
If in doubt, reference should be made to the relevant National Annex of ENV 1993-1-6. A.4 Dimple tolerance The depth of initial dimples in the tube wall wo is measured, in both the meridontal and circumferential directions, using a measurement gauge, see Figure A.3, of length lg where: a) meridontally and circumferentially lg = rT4 b) across welds lg = 25 T but lg ≤ 500 mm The gauge used for meridontal measurements should be straight but that used for measurements in the circumferential direction should have a radius of curvature r where:
r = 2
)(TD− NOTE For joints involving tubes of different thicknesses, it is recommended to refer to ENV 1993-1-6.
SIST EN 10219-2:2006
EN 10219-2:2006 (E) 18 TwoIg Figure A.3 — Measurement of depth wo of initial dimples
The level of initial dimples in the wall of the tubular pile is assessed in terms of the dimple tolerance parameter Ud given by:
Ud = golw
The dimple tolerance parameter Ud should satisfy the condition:
Ud ≤ Ud, max where:
Ud, max is the maximum permitted value for the dimple tolerance parameter. Recommended values for each fabrication tolerance class are given in Table A.3. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 19 Table A.3 — Maximum permitted values for dimple tolerance parameter Ud, max Dimensions in mm
Fabrication tolerance quality class Description Ud, max Class A Excellent 0,006 Class B High 0,01 Class C Normal 0,016 a The values of this parameter may be subject to change by national application of ENV 1993-1-6.
If in doubt, reference should be made to the National Annex of ENV 1993-1-6. SIST EN 10219-2:2006
EN 10219-2:2006 (E) 20 Annex B (normative)
Formulae for the calculation of sectional properties B.1 General Tables C.1, C.2 and C.3 of this standard give nominal sectional properties for a limited range of sizes of cold formed hollow sections. The nominal sectional properties of hollow sections supplied to the requirements of this standard shall be calculated using the formulae given below. NOTE The designation of the sections' major axis (yy) and its minor axis (zz) align with the axis designation used for structural design in the structural Eurocodes. This is a change from previous axis designations.
B.2 Circular hollow sections The sectional properties for circular hollow sections in Table C.1 are calculated using the formulae given below. Specified outside diameter (D) (mm) Specified thickness (T) (mm) Inside diameter (d = D - 2T) (mm) These parameters, which characterize the shape of circular hollow sections, may vary within the tolerances allowed by this standard and the sectional properties still remain valid. Superficial area per metre length 310DsAπ= (m2/m) Cross-sectional area ()222104×−=dDAπ (cm2) Mass per unit length M = 0,785 × A (kg/m) Second moment of area ()4441064×−=dDIπ (cm4) Radius of gyration AIi= (cm) SIST EN 10219-2:2006
EN 10219-2:2006 (E) 21 Elastic section modulus DIW102el×= (cm3) Plastic section modulus 333pl106×−=dDW (cm3) Torsional inertia constant
(polar moment of inertia) IIt2= (cm4) Torsional modulus constant Ct = 2Wel
(cm3) B.3 Rectangular, or square, hollow sections The sectional properties for square hollow sections in Table C.2 and for rectangular hollow sections in Table C.3 are calculated using the formulae given below.
Specified side dimension of a square hollow section or shorter side of a rectangular hollow section (B) (mm) Specified dimension of the longer side of a rectangular hollow section (H) (mm)
Specified thickness (T) (mm) External corner radius (ro) for calculation is:
for thicknesses ≤ 6 mm 2,0 T (mm)
for thicknesses > 6 mm ≤ 10 mm 2,5 T (mm)
for thicknesses > 10mm 3,0 T (mm) Internal corner radius (ri) for calculation is:
for thicknesses ≤ 6 mm 1,0 T (mm)
for thicknesses > 6 mm and ≤ 10 mm 1,5 T (mm)
for thicknesses > 10 mm 2,0 T (mm) These parameters, which characterize the geometric shape of rectangular, or square, hollow sections, may vary within the tolerances allowed by this standard and the sectional properties still remain valid. Superficial area per metre length ()oo3s4102rrBHAπ+−+= (m2/m) SIST EN 10219-2:2006
EN 10219-2:2006 (E) 22 Cross-sectional area ()()()22i2o10422rrTHBTA−−−−+=π (cm2) Mass per unit length M = 0,785A (kg/m) Second moment of area
Major axis Iyy()()()()+++−−−−=22ggg33444122212101hAIhAITHTBBH (cm4)
Minor axis Izz()()()()+++−−−−=22ggg33444122212101hAIhAITBTHHB (cm4) Radius of gyration
Major axis iyy = AIyy (cm)
Minor axis izz =AIzz (cm) Elastic section modulus
Major axis Wel yy =HIyy2×10
(cm3)
Minor axis Wel zz =BIzz2×10 (cm3) Plastic section modulus
Major axis Wpl yy =()()()()+−−−−gg223444224101hAhATHTBBH (cm3)
Minor axis Wpl zz =()()()()+−−−−gg223444224101hAhATBTHHB (cm3) SIST EN 10219-2:2006
EN 10219-2:2006 (E) 23 Torsional inertia constant +=h34t23101KAhTI (cm4) Torsional modulus constant +=TKTIC/10tt (cm3)
Where 2og41rA−=π (mm2)
2i41rA−=π (mm2)
Major axis og3-123102rHh−−=ππ (mm) (For minor axis substitute B for H.)
Major axis i3-1231022rTHh−−−=ππ (mm) (For minor axis substitute B for H.)
()4og312311631rI−−−=ππ (mm4)
()4i312311631rI−−−=ππξξ (mm4)
h = 2[(B – T) + (H – T)] – 2Rc(4 - π) (mm)
Ah = (B – T) (H – T)] – R2c(4 - π) (mm)
hTAKh2= (mm2)
2iocrrR+= (mm) SIST EN 10219-2:2006
EN 10219-2:2006 (E) 24 Annex C (normative)
Sectional properties for a limited range of standard sizes Table C.1 — Nominal dimensio
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