1、BRITISH STANDARD BS 5080-1: 1993 Structural fixings in concrete and masonry Part 1: Method of test for tensile loadingBS5080-1:1993 This British Standard, having been prepared under the directionof Technical CommitteeB/514, was publishedunder the authority ofthe Standards Board and comesinto effect
2、on 15 February 1993 BSI 02-1999 First published March 1974 Second edition February 1993 The following BSI references relate to the work on this standard: Committee reference B/514 Draft for comment 92/11949 DC ISBN 0 580 21604 7 Committees responsible for this British Standard The preparation of thi
3、s British Standard was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/41, Tests for fixings, upon which the following bodies were represented: Association of Building Component Manufacturers British Board of Agrement British Precast Concrete Federation Lt
4、d. Concrete Society Construction Fixings Association Department of the Environment Institution of Civil Engineers Institution of Structural Engineers London District Surveyors Association National Association of Scaffolding Contractors Stainless Steel Fabricators Association of Great Britain Suspend
5、ed Access Equipment Manufacturers Association Suspended Ceilings Association Amendments issued since publication Amd No. Date CommentsBS5080-1:1993 BSI 02-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Definitions 1 4 Base materials 1 5 Installa
6、tion of fixing 6 6 Apparatus 7 7 Procedure 7 8 Presentation of results 8 9 Test report 8 Figure 1 Under cut anchors: alternative profiles of undercuts in thebasematerial 1 Figure 2 Types of fixing to show the dimensions required for reportingtheirdescription 3 Figure 3 A suitable form of loading app
7、aratus 9 List of references Inside back coverBS5080-1:1993 ii BSI 02-1999 Foreword This Part of BS 5080 has been prepared under the direction of Technical Committee B/514, Access and support equipment. This edition introduces technical changes but it does not reflect a full review or revision of the
8、 standard which will be undertaken in due course. It supersedes BS 5080-1:1974 which is withdrawn. The principle changes from the 1974 edition are as follows: a) a restriction has been added on the location of any reinforcement in the standard specimen; b) precautions have been included when using r
9、esin adhesives for bonding fixings; c) modifications have been made to the load application procedure; d) a new figure has been included to clarify the definition of an undercut anchor. This Part of BS 5080 describes a standard method for conducting tests under axial tensile forces on structural fix
10、ings installed in concrete or masonry materials used in building and civil engineering construction. Part 2 describes a standard method for conducting tests under shear forces on structural fixings. A structural fixing joins, supports or retains components, and is designed to resist some form of loa
11、ding since its failure will have structural significance. This method of test applies to fixings installed according to the suppliers recommended procedure in a solid base material. This test applies to the fixing assembly comprising the fixing and the base material and not just the fixing itself. F
12、ailure of a fixing assembly under an axial tensile force may be due to failure of the material from which the fixing was manufactured, failure of the base material in which it was installed or loss of adhesion between them. This test does not apply to fixings used in conjunction with woodscrews, e.g
13、.smallplugs of metal, plastics or fibrous composition, or fixings used with thin rigid sheet materials, e.g. walls, roofs, partitions, or cavity fixings for use with hollow clay or concrete block masonry. Displacement fixings (pins or studs inserted by a cartridge operated tool) are not included, as
14、 the method of test is not appropriate to their use. However, should a design demand structural considerations and testing, the procedures given in this standard should be followed as far as possible. The test does not cover fixings when used in timber. If this method of test is used for proof testi
15、ng the applied load and/or relative movement limits should be specified by the user. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of its
16、elf confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be i
17、ndicated in the amendment table on theinside front cover.BS5080-1:1993 BSI 02-1999 1 1 Scope This Part of BS 5080 specifies a method for conducting tests under axial tensile forces on structural fixings installed in concrete or masonry used in building and civil engineering. The test applies to the
18、following types of fixing installed in concrete, natural stone, cast stone or brick or block masonry. a) Expanding anchors. Anchors held in drilled holes by friction or wedging action. b) Bonded fixings. Fixings held in drilled holes by grout or other bonding material. c) Cast-in fixings. Anchor bol
19、ts and sockets cast into the material during construction. d) Channel inserts. Slots and channels cast into the material during construction. e) Undercut anchors. Anchors held in drilled holes by interlocking in under-reamed shapes formed during drilling or setting (see Figure 1). The two distinct s
20、ituations in which the test can be applied are as follows: 1) for comparative or reference purposes, for which a standard specimen of base material is specified in 4.1; 2) for a specific application, for which the base material should be appropriate to the intended use of the fixing. In this situati
21、on the base material may be either a specimen manufactured for the purpose or a representative section of the base material in place. 2 References 2.1 Normative references This Part of BS 5080 incorporates, by reference, provisions from specific editions of other publications. These normative refere
22、nces are cited at the appropriate points in the text and the publications are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this Part of BS 5080 only when incorporated in it by updating or revision. 2.2 Informative references This Part
23、 of BS 5080 refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 Definitions For the purposes of this Part of BS 5080
24、 the following definitions apply. 3.1 supplier person who supplies or sells the fixing, and who may be the manufacturer, a selling agent or retailer 3.2 user person who specifies the fixing for installation and who may be the architect, consulting engineer, contractor or subcontractor, according to
25、the circumstances of the project 3.3 testing agent person who carries out the tests described in this standard, and who is responsible for ensuring compliance with the standard NOTEIt is assumed in this standard that the test is commissioned by the user although it may be commissioned by the supplie
26、r who then becomes the user in this context. 4 Base materials 4.1 General The dimensional criteria given in this clause are intended to ensure that the behaviour under test of any one fixing does not affect that of adjacent fixings. The dimensions given are not to be taken in any sense as guidance f
27、or field installation. The standard specimen of base material shall be manufactured from concrete in accordance with the dimensional and casting requirements given below. Figure 1 Undercut anchors: alternative profiles of undercuts in the base materialBS5080-1:1993 2 BSI 02-1999 4.2 Standard specime
28、n of base material 4.2.1 Specimen size A single specimen may be used for the installation and testing of any number of fixings, provided that the dimensional conditions are met. The dimensions for the different types of fixing are given in Figure 2. These are based on a characteristic dimension A of
29、 the fixing defined and shall be as follows: a) expanding and undercut anchors, the hole diameter or of the embedded length, whichever is the greater; b) bonded fixings, the maximum diameter of the fixing or of the embedded length, whichever is the greater; c) cast-in fixings, the maximum dimension
30、perpendicular to the axis or of the maximum embedded depth, whichever is the greater. The dimensions of the specimen shall be such that: 1) there shall be a minimum of 4A below the maximum depth of the fixing or of the hole into which it is inserted; 2) there shall be a minimum of 12A between the ce
31、ntre of any fixing and a free edge; 3) there shall be a minimum of 20A between the centres of any two fixings. Where fixings of two different sizes are considered their distance shall be taken as the sum of 10A for each fixing. NOTEFor channel inserts it is not practicable to define a characteristic
32、 dimension A, but the dimensions of the specimen should, as far as possible, comply with the criteria for other fixings. Allowance should be made for projecting ties or lugs. The fixing shall be located in the specimen on any cast face, i.e. not on the top, trowelled face. 4.2.2 Concrete The concret
33、e from which the standard specimen is prepared shall have the mix proportions specified below. The quantities and proportions of material given will produce approximately 0.28 m 3of fully compacted concrete. The batch weights should be calculated as follows to suit the size of the mixer and the actu
34、al quantity of concrete required. a) Portland cement; class 42.5 (conforming to BS12:1991): 100 kg. b) Total aggregate (conforming to BS882:1983):510 kg (dry weight): 1) coarse aggregate: flint gravel graded 20 mm to 5 mm; 2) sand: natural sand as a proportion by mass of the total aggregated content
35、: grading C: 40% grading M: 35% grading F: 30% c) Water content: the water content of each batch should be adjusted to give a concrete medium workability, equivalent to a slump of 25 mm to75mm. d) Compaction: mechanical vibration (applied externally or internally) shall be used to compact the concre
36、te. e) Curing: the specimen(s) shall be stored in moist air of at least 90% r.h. and 20C for the first two days after casting. Any reinforcement in the standard specimen shall be so positioned as to offer no additional strength in the zone of interaction between the concrete and the fixings. 4.2.3 S
37、pecimen report The report of the standard specimen shall comprise the following: a) the dimensions of the specimen; b) the location in the specimen of the fixing(s) being tested; c) the specification of the concrete mix, together with the following additional information: 1) a description of the agg
38、regates used in accordance with the method given in BS 812-1:1975; 2) the quantity of water added, expressed as a water/cement ratio based on aggregates in the saturated surface dry condition; 3) the slump achieved; 4) a description of the compaction method; 5) a description of the curing method; 6)
39、 at the time of testing, the concrete age, compressive strength and density; the compressive strength and the density shall be determined according to the method given in BS 1881-116:1983 and BS 1881-114:1983 respectively, (see 6.4). 4.3 Standard specimen of other base materials 4.3.1 Concrete The r
40、eport shall comprise the description of its mix proportions, including the type of cement and aggregate, the location and type of any reinforcement, the shape and dimensions of the cast unit, and, when the fixing is tested, the concrete age, compressive strength and density. If the concrete is an au
41、toclaved aerated proprietary type, the manufacturers description of it shall be given. The compressive strength shall be determined according to the method given in BS 1881-116:1983 either on specimens cast from the same batch as that in which the fixing is installed, or on cores cut from the concre
42、te or by other suitable methods.BS5080-1:1993 BSI 02-1999 3 NOTE 1D rmay be zero NOTE 2The type of thread, e.g. ISO metric, should be stated. a) Expanding and undercut anchors Figure 2 Types of fixing to show the dimensions required for reporting their descriptionBS5080-1:1993 4 BSI 02-1999 Figure 2
43、 Types of fixing to show the dimensions required for reporting their description (continued)BS5080-1:1993 BSI 02-1999 5 Figure 2 Types of fixing to show the dimensions required for reporting their description (concluded)BS5080-1:1993 6 BSI 02-1999 4.3.2 Natural stone The report shall comprise the de
44、scription of its rock name, taken from BS 6100-5.2:1984 or BS812-1:1975, its compressive strength, including the manner in which this was measured, the shape and dimensions of the block and the angle of the fixing relative to any natural bedding plane. 4.3.3 Cast stone The report shall be the same a
45、s that for concrete in4.3.1 except that its compressive strength shall be measured in accordance with BS 1217:1986. Where the cast stone consists partly of a facing material and partly of a structural concrete both parts shall be described. 4.3.4 Brick or block masonry The report shall comprise the
46、description of the variety and type of unit, as defined in BS 187:1978, BS 3921:1985 or BS 6073-1:1981, together with the size and compressive strength measured according to the relevant British Standard. The thickness and bonding of the wall and the mix proportions and strength, in accordance with
47、BS4551:1980, of the mortar shall be given. 5 Installation of fixing 5.1 Expanding and undercut anchors The hole shall be drilled and the anchor installed to the suppliers recommended procedure. Where this is incomplete a specified procedure shall be agreed between the supplier, the user and the test
48、ing agent. The hole shall be normal to the base material surface. The diameter of the drill bit and any other special feature used shall be as specified by the supplier of the fixing. The report of installation shall comprise the following: a) the suppliers name and reference number for the fixing i
49、ncluding the nominal hole diameter for which the fixing is intended and the nominal diameter and thread type of the threaded portion; b) the specification of the material from which the fixing is made and its finish; c) the actual diameter of the bit used to drill the hole, measured to the nearest 0.1 mm before starting and after completion, and the type of drill employed, i.e. rotary, rotary-percussive or hammer; d) the embedded length and, where relevant for impact expanded anchors, the hole depth, both to the nearest millimetre; e) the location of
