1、 Reference number ISO 10799-2:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 10799-2 First edition 2011-09-15 Cold-formed welded structural hollow sections of non-alloy and fine grain steels Part 2: Dimensions and sectional properties Profils creux de construction forms froid, souds, en acier non alli o
2、u grains fins Partie 2: Dimensions et caractristiques du profil ISO 10799-2:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photoc
3、opying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switz
4、erland ii ISO 2011 All rights reservedISO 10799-2:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols 1 5 Information to be supplied by the purchaser . 2 6 Tolerances 2 7 Measurement of size and shape 4 7.1 Genera
5、l . 4 7.2 Outside dimension 4 7.3 Thickness . 5 7.4 Out-of-roundness 5 7.5 Concavity and convexity 5 7.6 Squareness of sides 6 7.7 External corner profile 6 7.8 Twist 7 7.9 Straightness . 8 8 Dimensions and sectional properties . 8 Annex A (normative) Formulae for calculation of sectional properties
6、 25 ISO 10799-2:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees.
7、 Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Interna
8、tional Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Stan
9、dards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subje
10、ct of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10799-2 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 1, Steel tubes. This first edition of ISO 10799-2 cancels and replaces ISO 4019:2
11、001, of which it constitutes a minor revision. In particular, better grouping of several documents by subject area and minor editorial improvements have been carried out. ISO 10799 consists of the following parts, under the general title Cold-formed welded structural hollow sections of non-alloy and
12、 fine grain steels: Part 1: Technical delivery conditions Part 2: Dimensions and sectional properties INTERNATIONAL STANDARD ISO 10799-2:2011(E) ISO 2011 All rights reserved 1Cold-formed welded structural hollow sections of non-alloy and fine grain steels Part 2: Dimensions and sectional properties
13、1 Scope This part of ISO 10799 specifies the tolerances for cold-formed welded circular, square and rectangular structural hollow sections, and gives the dimensions and sectional properties for a range of standard sizes. NOTE For the technical delivery requirements, see ISO 10799-1. 2 Normative refe
14、rences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 10799-1, Cold-formed welded structural
15、 hollow sections of non-alloy and fine grain steels Part 1: Technical delivery conditions 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 10799-1 apply. 4 Symbols For the purposes of this document, the symbols given in Table 1 apply. Table 1 Symbols
16、Symbol Unit Definition A cm 2Cross-sectional area A sm 2 /m Surface area per metre length B mm Nominal length of side of a square hollow section Nominal length of the shorter side of a rectangular hollow section C 1 ; C 2mm Length of external corner profile of a square or rectangular hollow section
17、C tcm 3Torsional modulus constant D mm Nominal outside diameter of a circular hollow section ISO 10799-2:2011(E) 2 ISO 2011 All rights reservedTable 1 (continued) Symbol Unit Definition D max ; D minmm Maximum and minimum outside diameter of a circular hollow section, measured in the same plane e mm
18、 Deviation from straightness H mm Nominal length of the longer side of a rectangular hollow section I cm 4Second moment of area I tcm 4Torsional-inertia constant (polar moment of inertia for circular hollow sections only) i cm Radius of gyration L mm Length M kg/m Mass per unit length O % Out-of-rou
19、ndness R mm External corner radius of a square or rectangular hollow section T mm Nominal thickness V mm Total twist V 1mm Twist measured at one end of a section W elcm 3Elastic section modulus W plcm 3Plastic section modulus x 1mm Concavity of a side of a square or rectangular hollow section x 2mm
20、Convexity of a side of a square or rectangular hollow section XX Axis of cross-section: major axis of a rectangular hollow section YY Axis of cross-section: minor axis of a rectangular hollow section Degrees Angle between adjacent sides of a square or rectangular hollow section 5 Information to be s
21、upplied by the purchaser The following mandatory information taken from this part of ISO 10799 shall be supplied by the purchaser at the time of enquiry and ordering: a) the type of length, and the length or the length range (see Table 4); b) the dimensions (see Clause 8). NOTE This information is i
22、ncluded in the list of information to be supplied by the purchaser contained in 5.1 of ISO 10799-1:. 6 Tolerances Tolerances on the dimensions and mass of cold-formed hollow sections shall not exceed the values given in Table 2 for shape and mass, Table 3 for external corner profiles, Table 4 for le
23、ngth and, in the case of submerged-arc-welded hollow sections, Table 5 for the height of the internal and external weld beads. The internal corners of square and rectangular hollow sections shall be rounded. NOTE The internal corner profile is not specified. ISO 10799-2:2011(E) ISO 2011 All rights r
24、eserved 3Table 2 Tolerances Characteristic Circular hollow sections Square and rectangular hollow sections Side length mm Tolerance Outside dimensions (D, B and H) 1 %, with a minimum of 0,5 mm and a maximum of 10 mm. H, B 100 1 %, with a minimum of 0,5 mm 100 H, B 200 0,8 % H, B 200 0,6 % Thickness
25、, T For D 406,4 mm T 5 mm: 10 % T 5 mm: 10 % T 5 mm: 0,50 mm T 5 mm: 0,50 mm For D 406,4 mm 10 % with a maximum of 2 mm Out-of-roundness, O 2 % for hollow sections having a diameter to thickness ratio not exceeding 100 a Concavity/convexity b Max. 0,8 %, with a minimum of 0,5 mm Squareness of sides
26、90 1 External corner profile See Table 3 Twist, V 2 mm plus 0,5 mm/m length Straightness 0,2 % of total length 0,15 % of total length Mass, M, per unit length 6 % on individual lengths aWhere the diameter to thickness ratio exceeds 100, the tolerance on out-of-roundness shall be agreed. bThe toleran
27、ce on convexity and concavity is dependent of the tolerance on outside dimensions. Table 3 External corner profile Thickness T mm External corner profile C 1 , C 2 , or R amm T 6 1,6 T to 2,4 T 6 T 10 2,0 T to 3,0 T T 10 2,4 T to 3,6 T aThe sides need not be tangential to the corner arcs. ISO 10799-
28、2:2011(E) 4 ISO 2011 All rights reservedTable 4 Tolerances on length aType of length Range mm Tolerance Random length 4 000 to 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 less than 75 % of the minimum of the range. Ap
29、proximate length 4 000 50 mm 0 Exact length 6 000 5 mm 0 6 000 to 10 000 15 mm 0 10 000 5 mm 1 mm/m 0 aThe purchaser shall indicate in the enquiry and order the type of length required and the length or length range as appropriate. Table 5 Tolerance on height of internal and external weld bead for s
30、ubmerged-arc-welded hollow sections Thickness T mm Maximum weld bead height mm 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,
31、 B for square sections or H for rectangular sections, with a minimum of 100 mm. 7.2 Outside dimension For circular hollow sections, the diameter, D, shall be measured. A calliper gauge, circumference tape or other suitable device may be used at the discretion of the manufacturer. Dimensions B and H
32、shall be measured at a position within 5 mm from the start of the external corner profile as shown in Figure 1. ISO 10799-2:2011(E) ISO 2011 All rights reserved 5Dimensions in millimetres aThis dimension is a maximum when measuring B or H and a minimum when measuring T. Figure 1 Limiting cross-secti
33、onal positions for measuring the dimensions B, H and T for square or rectangular hollow sections 7.3 Thickness The thickness, T, shall be measured at a position of not less than 2T from the weld. The limiting cross-sectional positions for measuring the thickness of square and rectangular hollow sect
34、ions are shown in Figure 1. NOTE Thickness is normally measured within a distance of half the outside diameter or half the longer side length from the end of the section. 7.4 Out-of-roundness The out-of-roundness, O, of a circular hollow section shall be calculated, as a percentage, from the followi
35、ng equation: max min 100 DD O D 7.5 Concavity and convexity The concavity, x 1 , or the convexity, x 2 , 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 using the following: 1212 100; 100; 100; 1
36、00 xxxx BBHH where B and H are the lengths of the sides containing the concavity, x 1 , or the convexity, x 2. ISO 10799-2:2011(E) 6 ISO 2011 All rights reservedFigure 2 Measurement of concavity/convexity of square or rectangular hollow sections 7.6 Squareness of sides The deviation from squareness
37、of the sides of a square or rectangular hollow section is defined as the difference between 90 and as shown in Figure 3. Deviation from squareness = 90 Figure 3 Squareness of sides of square or rectangular hollow sections 7.7 External corner profile The external corner profile of a square or rectang
38、ular hollow section shall be measured in accordance with a) or b), at the discretion of the manufacturer. a) Measure the external corner radius, R. Use a radius gauge or other suitable device. b) Measure the length of the external corner profile (C 1and C 2in Figure 4). ISO 10799-2:2011(E) ISO 2011
39、All rights reserved 7Figure 4 External corner profile of square or rectangular hollow sections 7.8 Twist The total twist, V, in a square or rectangular hollow section shall be determined in accordance with a) or b), at the discretion of the manufacturer. a) Place the hollow section on a horizontal s
40、urface with one side at one end pressed flat against the surface. At the opposite end of the hollow section, determine the difference, V, in the height of the two lower corners from a horizontal surface (see Figure 5). b) Measure V with a spirit level and micrometer (screw) gauge or other suitable d
41、evice. The reference length of the spirit level shall be the distance between the intersection of the flat sides and the external corner profile (see Figure 6). V is the difference between the values, V 1(see Figure 6), measured at each end of the section. Figure 5 Total twist of square or rectangul
42、ar hollow sections ISO 10799-2:2011(E) 8 ISO 2011 All rights reservedKey 1 spirit level 2 micrometer gauge aH 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
43、at the point of maximum departure of the section from a straight line connecting its two ends as shown in Figure 7. The percentage deviation from straightness shall be calculated using the following: 100 % e L Figure 7 Measurement of deviation from straightness 8 Dimensions and sectional properties
44、The nominal section dimensions and sectional properties for a range of cold-formed, structural hollow section sizes are given in Table 6 for circular sections (see Figure 8), Table 7 for square sections and Table 8 for rectangular sections. The sectional properties were calculated from the formulae
45、given in Annex A. Other sizes and thicknesses may be available. ISO 10799-2:2011(E) ISO 2011 All rights reserved 9NOTE See Table 6. Figure 8 Circular hollow section Table 6 Nominal dimensions and sectional properties of circular hollow sections Outside Diameter Thickness Mass per unit length Cross-
46、sectional area Second moment of area Radius of gyration Elastic section modulus Plastic section modulus Torsional inertia constant Torsional modulus constant Surface area per metre length Nominal length per tonne D T M A I i W elW plI tC tA smm mm kg/m cm 2cm 4cm cm 3cm 3cm 4cm 3m 2 /m m 21,3 2,0 0,
47、95 1,21 0,571 0,686 0,536 0,748 1,14 1,07 0,066 9 1 050 21,3 2,5 1,16 1,48 0,664 0,671 0,623 0,889 1,33 1,25 0,066 9 863 21,3 3,0 1,35 1,72 0,741 0,656 0,696 1,01 1,48 1,39 0,066 9 739 26,9 2,0 1,23 1,56 1,22 0,883 0,907 1,24 2,44 1,81 0,084 5 814 26,9 2,5 1,50 1,92 1,44 0,867 1,07 1,49 2,88 2,14 0,
48、084 5 665 26,9 3,0 1,77 2,25 1,63 0,852 1,21 1,72 3,27 2,43 0,084 5 566 33,7 2,0 1,56 1,99 2,51 1,12 1,49 2,01 5,02 2,98 0,106 640 33,7 2,5 1,92 2,45 3,00 1,11 1,78 2,44 6,00 3,56 0,106 520 33,7 3,0 2,27 2,89 3,44 1,09 2,04 2,84 6,88 4,08 0,106 440 42,4 2,0 1,99 2,54 5,19 1,43 2,45 3,27 10,4 4,90 0,
49、133 502 42,4 2,5 2,46 3,13 6,26 1,41 2,95 3,99 12,5 5,91 0,133 407 42,4 3,0 2,91 3,71 7,25 1,40 3,42 4,67 14,5 6,84 0,133 343 42,4 4,0 3,79 4,83 8,99 1,36 4,24 5,92 18,0 8,48 0,133 264 48,3 2,0 2,28 2,91 7,81 1,64 3,23 4,29 15,6 6,47 0,152 438 48,3 2,5 2,82 3,60 9,46 1,62 3,92 5,25 18,9 7,83 0,152 354 48,3 3,0 3,35 4,27 11,0 1,61 4,55 6,17 22,0 9,11 0,152 298 ISO 10799-2:2011(E) 10
