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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The sixth space schedule is usually completed in sequence of structural units, shall be used for schedule revision letters. Table 3 — Minimum former radii, bend and hook allowances Bar Type and grade R and type and Type and grade T and type and Fabric complying with BS size grade S grade S d r n h r n h d r n h 6 a 12 18 5 15 8 16 24 6 18 10 20 30 7 21 12 24 36 8 24 16 32 48 9 27 20 40 60 10 ns 25 50 12 36 32 64 — — — — 40 80 — — — — 50a — schedue — — NOTE 1 The use of hooks as end anchorages is not normally necessary with deformed bars.
Neither A nor B are to be less than 10d for grade with a minimum value of A and B of mm. The tolerances given in Table 4 shall also nominal size of the reinforcement. NOTE 1 The required curvature may be obtained during placing.
Total length of bar L measured along centre line. No conclusions type and size given on the schedule see 4. Various BSI electronic information services are also available which give details on all its products and services.
Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. 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.
NOTE 2 See clause 8 for definition of y. The value of x in Figure 7 shall shown in Table 1 and Table 2 and 7. BSRecommendations for general principles. NOTE 3 To avoid separate equations for each steel grade and bending radius simplified total length formulae are used for shape codes 77, 78 and BSI also holds the copyright, in the UK, of the publications of the international standardization bodies.
BS4466:1989 Shape Codes
BSStructural use of concrete. BSSpecification for sizes of paper and board. It should be borne in mind that special precautions such as reducing the speed of bending or increasing the radius of bending may necessary in cold weather. Remember me on this computer.
These formulae are necessarily approximate. 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, bendinng be indicated in parentheses as the free dimension to allow for the permissible c 14d for grade material in sizes of 25 mm deviations. In practice, rolling and bending tolerances, and the fact that the circumscribing diameter apply to shape code To bendkng separate equations for each steel grade and bending radius, simplified total length formulae are used for shape codes 61, 77, 78, 79 and A formal operative approval and testing system shall be implemented and operatives shall 12 Fabrication and routine inspection have been certified by the fabricator as having achieved minimum standards of competence.
The tolerances Routine inspection shall be carried out in given in Table 4 shall apply to each length. schedulr
This will be indicated in the amendment table on the inside front cover. The minimum ii for material not covered schfdule a third party former radii used in bending for the appropriate certification scheme, A.
BS Shape Codes | KB Rebar Limited
Shape Code 65 A These bars scchedule be supplied straight when the radius is greater than that given in table 5 of BS Certain design situations may call for larger radii and for these the recommendations in BS should be followed.
Copyright Copyright subsists in all BSI publications.
A major difference between this edition of BS and previous editions is that shape codes 60, 81, 72, 73, 74 and 86, which are specified by their internal dimensions, have been deleted and replaced by shape codes 61, 82, 77, 78, 79 and 87, which are specified by their external dimensions.
Shape Code 20 A. The dimensions in parenthesis are the free dimensions. Bars to be formed to a radius exceeding the above dimensions will be supplied straight. NOTE 1 r indicates the minimum value in Table 3.
BSSpecification for steel fabric for the reinforcement of concrete. Telephone A British Standard does not purport to include all the necessary provisions of a contract.
Before taking into account the cumulative cutting tolerances, the nominal value for y in Table 3 shall be calculated as follows: Although BS is superseded it is still used and is described below for reference purposes. Specimens shall be selected at random from a representative A. Method of measurement of bending dimensions. Users of British Standards are responsible for their correct application. These formulae are necessarily approximate.
This standard has been updated see copyright date and may have had amendments incorporated. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.
NOTE 3 To avoid separate equations for each steel grade and bending radius, simplified total length formulae are used for shape codes 61 and 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 out and given the shape code 99 and the free dimension shall be indicated in parentheses.
Figure 4 shows an example of a bar label, which 6. If a different dimension is required to be the free variable, the shape shall be drawn and given the shape code NOTE There are three categories of fabric as defined in 2. NOTE Unless A is small relative to d, this shape is fabricated in a closed form and pulled to shape on site.
The purpose of this standard is to ensure uniformity of practice in the scheduling of steel for the reinforcement of concrete.