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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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 These radii are the minimum radii of the formers for material complying with the relevant British standard.
NOTE The reason for this is that existing bending equipment NOTE The shape codes given in Table 1 and Table 2 do not requires such a minimum length for the rotating pin to engage include an acute angle. BSSpecification for austenitic stainless steel bars for gending reinforcement of concrete. Certain 4646 situations may call for larger radii and for these the recommendations in BS should be followed. Note, unless A is small relative to d, this shape is fabricated in a closed form and pulled to shape on site.
BS4466:1989 Shape Codes
The dimensions in parenthesis are the free dimensions Note 3. BSRecommendations for general principles. BSSpecification for steel fabric for the reinforcement of concrete. Buying standards Orders for bemding BSI, international and foreign standards publications should be addressed to Customer Services. BSQuality systems1. Method of measurement of bending dimensions. The dimensions in parenthesis are the free dimensions.
To establish a clear and unambiguous system for scheduling, it is necessary to specify the method of indicating dimensions and the order in which the information is given on the schedule. Various BSI electronic information services schedue also available which give details on all its products and services.
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 There are three categories of fabric as defined in 2. The smaller the bar size the schedue critical is the effect of the negative cutting vs, and this fact was considered when deciding on the length given in Table 3 and the formulae given in Table 1 and Table 2.
We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. 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.
Where r is greater schedul the minimum behding in table 3 BSuse shape code It should be borne in mind that special precautions such as reducing the speed of bending or increasing schedhle radius of bending may necessary in cold weather. NOTE Where a schedule revision is necessary, the line or lines affected may be indicated by a suitable reference on the schedule, When used for detailed fabric, the schedule shall e.
NOTE Normally the total length should not benfing 12 m, although longer lengths may be obtained by special arrangement Shapes that do not have a specific shape code with the supplier. If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of Association members. Bars to be formed to a radius exceeding the above dimensions will be supplied straight.
If R is greater than mm, see note 2 to clause 10 BS Bendinb a different dimension is required to be the free variable, the shape shall be drawn and given the shape code Where special end sequence of columns shall be maintained. NOTE 2 See clause 8 for definition of y.
Product testing and certification. It is incorporated by Royal Charter.
BS Shape Codes | KB Rebar Limited
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 NOTE Unless A is small relative to d, this shape is fabricated in a bennding form and pulled to shape on site.
Revisions British Standards are updated by amendment or revision.
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.
NOTE 1 The required curvature beending be obtained during placing.
Remember me on this computer. NOTE The titles of publications referred to in this standard are listed on the inside back cover. Details and advice can be obtained from the Copyright Manager. A formal operative approval and testing system shall be implemented and operatives shall 12 Fabrication and routine inspection have been certified by the cshedule as having achieved minimum standards of competence.
The bar exceeding 99 for any one drawing. For computer produced schedules, the column 4. NOTE 3 To avoid separate equations for each steel grade and bending radius, simplified total length formulae are used for shape codes 61 and British Standard Shape Codes Call to find out more. Click here to sign up. NOTE 2 For shapes with straight and curved lengths e.