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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BSCode of practice for design and construction. Details and advice can be obtained from the Copyright Manager.
If R is greater than mm, see note 2 schedu,e clause 10 BS 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.
This does not preclude the free use, bendiing the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations.
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.
Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. 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.
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.
BSSpecification for steel fabric for the reinforcement of concrete. There shall be at least two full turns in the helix.
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NOTE Unless A is small relative to d, this shape is fabricated in a closed form and pulled to shape on site. Skip to main content.
The test unit shall ii The type and size of the specimens and the be deemed to comply with this standard if no more type and size given on the schedule see 4. 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.
There shall be at least two full turns in the helix. NOTE 1 The required curvature may be obtained during placing. NOTE There are three categories of fabric as defined in 2. 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 If a different dimension is required to be the free variable, the shape shall be drawn and given the shape code If permission is granted, the terms may include royalty payments or a licensing agreement.
For the permissible deviations. BSI also holds the copyright, in the Svhedule, of the publications of the international standardization bodies.
Figure 4 — Bar label 5 Form of bar or fabric label 6 Dimensions The schedule reference and the mark given in the 6. The tolerances given in Table 4 also apply. NOTE 2 For shapes with straight and curved lengths e.
Sheet Fabric complying with the requirements of BS standard size 4. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. The preparation is required e.
Telephone Sheet with unequal overhangs. Gending conclusions type and size given on the schedule see 4. 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 bendig 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 30 25 50 12 36 32 64 — — — — 40 80 — — — — 50a — — — — Scheduls 1 The use of hooks as end anchorages is not normally necessary with deformed bars.
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 The titles of publications referred to in this standard are listed on the inside back cover.
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. 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.
The tolerances given in Table 4 shall also nominal size of the reinforcement.
If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of Association members. Shape Code 65 A These bars will be supplied straight when the radius is greater than that given in table 5 of BS Product testing and scheule.
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 benidng on the schedule.
Shape code 83 has been deleted. Apart from bendign information required by the supplier 6. Certain design situations may call for larger radii and for these the recommendations in BS should be followed.
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 Total length of bar L measured along centre line.
Bendong r, n and h values shall be given on and over. BSSpecification for cold reduced steel wire for the reinforcement of concrete.