2. bending and cutting of a factory-made product of welded bars or wires steel PDF Compressor Pro BS 4 Form of schedule The first three. BS – Measurement of bending dimensions – Method of measurement of bending dimensions. Total length of bar (L) measured . schedule columns. 4 Form of schedule. 5 Form of bar or fabric label. 6 Dimensions. 7 Scheduling. B Bends and hooks. 9 Tolerances on cutting and bending.
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Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages scbedule to 18, an inside back cover and a back cover.
The minimum ii for material not covered by a third party former radii used in bending for the appropriate certification scheme, A. NOTE 1 The required schdule may be obtained during placing. Apart from any information required by the supplier 6. Remember me on this computer. Sheet with unequal overhangs.
The total length shall be given a 10d for grade material; and, unless there is an end anchorage bend or hook, b 12d for grade material not exceeding sizes one bending dimension, preferably an end of 20 mm; dimension, shall be indicated in parentheses as the free dimension to allow for the permissible c 14d for grade material in sizes of 25 mm deviations.
BSSpecification for cold reduced steel wire for the reinforcement of concrete. Click here to sign up. Total length of bar L measured along centre line. If a different dimension is required to be the free variable, the shape shall be drawn and given the shape code BSStructural use of concrete. Compliance with a British Standard does not of itself confer immunity from legal obligations.
Contact the Information Centre. It presents the UK view on standards in Europe and at the international level. Enquiries as to the availability of third party certification schemes and of competent test laboratories will be forwarded by BSI to the Association of Certification Bodies.
Plain smooth surfaces or rolls b either of the following: To avoid separate equations for each steel grade and bending radius, simplified total length formulae are used for shape codes 61, 77, 78, 79 and Although BS is superseded it is still used and is described below for reference purposes.
In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. There shall be at least two full turns in the helix. These radii are the minimum radii of the formers for material complying with the relevant British standard. Method of measurement of bending dimensions.
Before taking into account the cumulative cutting tolerances, the nominal value for y in Table 3 shall be calculated as follows: For cutting and bending purposes, schedules shall be provided on separate sheets of paper of size A4 of Drawing Schedule Revision BS and not as part of the detailed Bar schedule reinforcement drawings. Figure 4 — Bar label 5 Form of bar or fabric label 6 Dimensions The schedule reference and the mark given in the 6.
In giving this length on the schedule, due consideration should be given to the When dimensioning an acute angle the tangential possibility of negative cutting tolerances up to 25 mm reducing lines shown in Figure 5 shall be used.
BSSpecification for steel fabric for the reinforcement of concrete. Users of British Standards are responsible for their correct application. Certain design situations may call for larger radii and for these the recommendations in BS should be followed. For computer produced schedules, the column 4. It is the constant aim of BSI to improve the quality of our products and services.
Sheet Fabric complying with the requirements of BS standard size 4. Every dimension shall be specified and the dimension that is to allow for the permissible deviations shall be indicated in parentheses, otherwise the fabricator is free to choose which dimension shall allow for the tolerance. The bar exceeding 99 for any one drawing.
Enter abr email address you signed up with and we’ll email you a reset link. The smaller the bar size the more critical is the effect of the negative cutting tolerance, and this fact was considered when deciding on the length given in Table 3 and the formulae given in Table 1 and Table 2.
BS armature | jean-louis Guincetre –
BSRecommendations for general principles. If a shape that is given in this Table 1 is required but a different dimension is to allow for the permissible deviations, the shape shall be drawn bennding and given the shape code 99 and the free dimension shall be indicated in parentheses. Copyright Copyright subsists in all BSI publications.
The preparation is required e. NOTE There are three categories of fabric as defined in 2. The tolerances given in Table 4 also apply. These formulae are necessarily approximate.
BS4466:1989 Shape Codes
The third party certification authority shall assess iv The length of the specimens and the length the long term consistency of production fabrication given on the schedule see clause 9.
If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Every dimension that is to allow for the permissable deviations shall be indicated in parenthesis, otherwise the fabricator is free to choose which dimension shall allow for the tolerance.
Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Table 2 gives other shape codes longer than 2 mm.
Where r is greater than the minimum value in table 3 BSuse shape code This will be indicated in the amendment table on the inside front cover. No conclusions type and size given on the schedule see 4. Users of British Standards should make sure that they possess the latest amendments or editions. The angled length as shown in Figure 6 shall be not less than 10d for grade nor less than 12d for grade in sizes of less than 20 mm nor less than 14d for grade in sizes of 25 mm and over.
Figure 4 shows an example of a bar label, which 6.