1、 ISO 2013 Timber structures Uniform, concentrated static and concentrated impact loads on wood-based roof and floor panel assemblies Test methods Structures en bois Assemblages de panneaux en bois pour toitures et planchers sous charges concentres et rparties, statique et par impact Mthodes dessais
2、INTERNATIONAL STANDARD ISO 16507 First edition 2013-09-01 Reference number ISO 16507:2013(E) ISO 16507:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in
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4、tale 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 Switzerland ISO 16507:2013(E) ISO 2013 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbo
5、ls 2 5 Specimen conditioning. 2 5.1 Dry . 2 5.2 Wet . 2 5.3 Redried . 2 6 Concentrated static load test . 2 6.1 Apparatus 2 6.2 Specimen preparation 4 6.3 Procedure 7 6.4 Report . 7 7 Concentrated impact load test . 8 7.1 Apparatus 8 7.2 Specimen preparation .11 7.3 Procedure .11 7.4 Report 13 8 Uni
6、formly distributed load test .14 8.1 General 14 8.2 Apparatus .14 8.3 Specimen preparation .15 8.4 Test procedure 16 8.5 Report 17 Annex A (informative) Structural performance requirements for span rating 18 Bibliography .22 ISO 16507:2013(E) Foreword ISO (the International Organization for Standard
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13、/TC 165, Timber structures.iv ISO 2013 All rights reserved ISO 16507:2013(E) Introduction During construction and occupancy of a building, floor and roof sheathing are subjected to uniform and concentrated static and impact loads that frequently govern the thickness required. Static loads may simula
14、te either foot traffic, or loads from fixtures, when applied through loading disks of appropriate size. Impact loads will occur during construction and also in service. Uniform loads may simulate snow, wind, or occupancy loads. Roof sheathing and subflooring are likely to be critical in strength or
15、stiffness, or both, under foot traffic and construction loads, while single-layer floors are generally critical under fixture loads, foot traffic, and in-service impact loads. Subfloors, like single floors, must also support fixture loads, but they will have an additional layer of material, such as
16、underlayment above, which will help to distribute concentrated loads. The procedures outlined will provide data that can be used to evaluate the structural performance, under concentrated and uniform loads, of roof and floor sheathing, separate from the effects of the framing, under simulated condit
17、ions representative of those in actual service. The concentrated static and impact test procedures are based upon ASTM E661-03 5 . The uniformly distributed load test is based upon NIST Voluntary Product Standard PS 1-09 3 . Annex A contains non-mandatory sampling and product performance guidelines
18、that correspond to span rating categories found in PS 1, PS 2, and CSA O325. These three structrural wood-based panel standards have been referenced in North American building codes for several decades. Over this period of time, the performance guidelines established in these standards have resulted
19、 in reliable and satisfactory in- service structural performance. ISO 2013 All rights reserved v Timber structures Uniform, concentrated static and concentrated impact loads on wood-based roof and floor panel assemblies Test methods 1 Scope This International Standard is applicable to determining th
20、e resistance to deflection and damage of wood- based panels subjected to concentrated impact loads from nonrigid blunt objects, concentrated static loads, and uniformly distributed loads. Surface indentation is not evaluated separately from deflection. The procedures are intended to simulate loading
21、 on roof or floor sheathing materials installed directly to framing. Three applications are covered: roof sheathing, subfloors, and single floors. Panels are tested parallel and/or perpendicular to the panel strength axis. Roof sheathing is tested in both a dry and a wet condition, while subfloors a
22、nd single floors are both tested in a dry condition, as well as a condition of having dried out after being wet. These moisture conditions are those commonly experienced with site-built construction. These procedures do not cover vibration and are not intended for the evaluation of the framed assemb
23、ly as a whole. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
24、uding any amendments) applies. None. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 subfloor panel that provides the structural integrity of the floor and is directly fastened to the floor framing, in conventional timber framing 3.2 underlay
25、ment panel that provides a smooth surface for direct installation of non-structural finish floor covering, in conventional timber framing 3.3 single floor panel that performs the function of subfloor and underlayment 3.4 span rating index number, based on customary inch units, that identifies the re
26、commended maximum centre-to- centre support spacing for the specified end use under normal use conditions Note 1 to entry: Spans are defined for end uses such as roof, subfloor, and single floor. As a matter of convention, spans are typically specified by a single index number for single floor (e.g.
27、 Floor 24 o.c.), while roof and subfloor are often combined in a fractional format (e.g. 32/16). INTERNATIONAL ST ANDARD ISO 16507:2013(E) ISO 2013 All rights reserved 1 ISO 16507:2013(E) EXAMPLE A span rating of 32/16 d e s i gn a t e s a r o o f s p a n o f 8 1 3 m m ( 3 2 i n c h e s ) a n d a s
28、u b fl o o r s p a n o f 406 mm (16 inches). 4 Symbols d distance from outer support to the point of maximum deflection for a uniformly loaded two-span system, in mm S test assembly span as measured from centre to centre of supports, in mm W specimen width, in mm 5 Specimen conditioning 5.1 Dry Cond
29、itioning to either constant weight or moisture content, or for at least 2 weeks at (20 2) C and (65 5) % relative humidity. NOTE 1 Tables A.1 and A.2, footnote a contain alternate conditions for Dry. NOTE 2 The conditions specified in 5.1 may result in higher results than the conditions permitted fo
30、r Dry in Tables A.1 and A.2, footnote a. 5.2 Wet Conditioning to a continuous water spray for three days, applied to the top surface of the specimen at a rate such as to keep this surface continuously wet. The position of the specimen shall preclude water ponding on it, or immersion of any portion.
31、NOTE A simplified spray tank may be used to support the sheathing in a near vertical position during exposure to the water spray. The tank should be fitted with drains so that water spray does not accumulate, and the sheathing should be placed on blocks to elevate its lower edge above the residual w
32、ater in the tank bottom. 5.3 Redried Wet conditioning per 5.2 followed by dry conditioning per 5.1. NOTE The use of a fan is recommeneded in order to dry specimens to a constant weight or moisture content. 6 Concentrated static load test 6.1 Apparatus The apparatus for the concentrated load test sha
33、ll conform to Figure 1 and 6.1.1 to 6.1.4. Alternative methods for measuring deflection shall be permitted (see 6.1.4).2 ISO 2013 All rights reserved ISO 16507:2013(E) Key 1 dial gauge 2 dial gauge support 3 test specimen 4 loading disk (self-aligning) 5 threaded rod (height adjustable) 6 loading yo
34、ke a Load. Figure 1 Concentrated static and impact load apparatus ISO 2013 All rights reserved 3 ISO 16507:2013(E) 6.1.1 Supports The framing members shall be supported in order not to deflect under the applied loads. The support system shall include provisions for rigidly restraining the ends of th
35、e framing members, to prevent rotation or vertical movement during testing. 6.1.2 Loading device Any convenient means may be used for applying a compressive load up to ultimate, and for measuring the load within 1 % accuracy. Load shall be applied through a ball-and-socket joint to ensure even appli
36、cation. 6.1.3 Loading disk Two steel disks are required: one having a diameter of 25 mm, representing a concentrated load, and one of 76 mm, representing foot traffic, each with a thickness of at least 13 mm. The edge of the loading disk contacting the test specimen shall be rounded to a radius not
37、exceeding 1,5 mm. Disk diameters in Table 1 shall be used for evaluating strength per 6.3.2. The 76-mm-diameter disk shall be used for evaluating stiffness per 6.3.1. Table 1 Disk diameters for concentrated load strength Dimensions in millimetres Conditioning Application Roof Subfloor Single floor W
38、et 76 76 a 76 a Dry 76 76 25 Redried 76 25 aTesting in the wet condition for subfloors and single floors is not common, and is not required in Annex A. 6.1.4 Deflection gauge The deflection gauge shall be mounted on a rigid tripod whose legs rest on the sheathing immediately above the framing member
39、s that are adjacent to the load point (Figure 1). Alternatively, other deflection measuring devices capable of measuring panel deflection separately from deformation of the test apparatus (e.g. supporting frame, load head, etc.) shall be permitted. The deflection gauge shall have a range exceeding t
40、he maximum anticipated deflection, have a maximum error of less than 1 %, and have a resolution not more than 0,03 mm. 6.2 Specimen preparation The specimen shall be installed and its test points are located in the framing assembly per Figure 2. The specimen length perpendicular to the main framing
41、members shall conform to the centre-to-centre spacing, S, anticipated in service. Where sheathing is continuous over more than one span, its length shall be equal to the minimum number of spans permitted or recommended for the product used and its intended application, multiplied by the centre-to-ce
42、ntre spacing of the framing members. The specimen width shall be at least 595 mm for spans up to 610 mm. For greater spans, the specimen width shall be either 1 220 mm or the full panel width, which ever is less. The specimen width shall conform to its nominal full panel width when edges are fully s
43、upported. When edges are unsupported or partially supported, the specimen may be trimmed to a width not less than 595 mm. The specimen shall be cut to the required size prior to conditioning. The specimen shall be conditioned to either dry, wet, or redried (see 5.1 to 5.3). The conditioned specimen
44、shall be installed using the type of framing, fastener schedule, and installation details as planned for use in service. After fabrication, test specimens promptly at ambient laboratory conditions.4 ISO 2013 All rights reserved ISO 16507:2013(E) Specimens may be used for more than one test provided
45、the test locations are at least 455 mm apart (measured parallel to the framing), occur in different spans (see Figure 2), and show no sign of damage from other tests. NOTE 1 Annex A contains recommended specimen conditioning requirements NOTE 2 Where the specimen is installed on wood framing, the fr
46、aming may be of any species and grade commonly used in construction that has a specific gravity of 0,40 to 0,70, oven-dry basis, with a maximum moisture content of 19 %. If nails are used, they may be double-headed to simplify the disassembly of the specimen upon completion of testing, providing suc
47、h nails will not damage the testing equipment. Framing may be reused for more than one test, provided it has not been significantly damaged by previous testing. Steel framing and cleats simulating nails may be used instead of wood framing. ISO 2013 All rights reserved 5 ISO 16507:2013(E) Dimensions
48、in millimetres a) Edges partially supported b) Edges not supported c) Edges fully supported6 ISO 2013 All rights reserved ISO 16507:2013(E) Key 1 unsupported edges 2 partially supported edge (T b) detailed description of the test assembly, including framing and fastening schedule, and other pertinen
49、t construction details; c) conditioning; ISO 2013 All rights reserved 7 ISO 16507:2013(E) d) loading disk size; e) location of test points; f) the preload, if used; g) the sample minimum, maximum, and average deflection under a net 890 N concentrated load; h) the sample minimum, maximum, and average ultimate concentrated load; i) the sample minimum, maximum, and average concentrated static load, at which the first significant break on top, bottom, or both surfaces of the specimen is detected (see Note in 6.3.2), if rec
