SANS 282 bending dimensions and scheduling of reinforcement.pdf

Copyright protected.This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. ISBN 978-0-626-26322-5 SANS 282:2011 Edition 6 SOUTH AFRICAN NATIONAL STANDARD Bending dimensions and scheduling of steel reinforcement for concrete Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS Copyright protected. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 Table of changes Change No. Date Scope Foreword This South African standard was approved by National Committee SABS SC 59A, Construction standards – Cement, lime and concrete, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in October 2011. This document supersedes SANS 282:2004 (edition 5.1). Annex A forms an integral part of this document. Copyright protected. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 Contents Page Foreword 1 Scope................................................................................................................................. 3 2 Normative references ......................................................................................................... 3 3 Definitions .......................................................................................................................... 3 4 Bending dimensions ........................................................................................................... 4.1 General.................................................................................................................... 4.2 Scheduling ............................................................................................................... 4 4 15 Bar and fabric schedules .................................................................................................... 5.1 General.................................................................................................................... 5.2 Title block ................................................................................................................ 5.3 Bar and fabric marks................................................................................................ 5.4 Type and size .......................................................................................................... 5.5 Bending schedule .................................................................................................... 5.6 Bending of fabric reinforcement ............................................................................... 5.7 Cutting length........................................................................................................... 21 21 22 22 23 23 23 24 6 Bar or fabric label ............................................................................................................... 24 7 Manufacturing and routine inspection................................................................................. 24 8 Quality evaluation............................................................................................................... 25 Annex A (normative) Summary of shape codes ................................................................. 26 Bibliography........................................................................................................................... 27 5 1 This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 This page is intentionally left blank 2 .Copyright protected. bending shapes and dimensions of bars are given NOTE Throughout this standard. Steel bars for concrete reinforcement. types of steel. Welded steel fabric for reinforcement of concrete.2 bending schedule list in which the nominal sizes. 2 Normative references The following referenced documents are indispensable for the application of this document. the methods of measuring bending dimensions and the scheduling of steel bars that are used for the reinforcement of concrete. SANS 1024. the latest edition of the referenced document (including any amendments) applies. 3.Copyright protected. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. measured along its centre line NOTE Approximate values determined from the formulae given in table 1 are acceptable. the diameter of a reinforcing bar is indicated as “d” and the standard radius of bending of such bar as "r". Information on currently valid national and international standards can be obtained from the SABS Standards Division. For undated references. only the edition cited applies. For dated references. cutting lengths. SANS 920. the following definitions apply. 3. SANS 282:2011 Edition 6 Bending dimensions and scheduling of steel reinforcement for concrete 1 Scope This standard specifies bending dimensions. bent through 90° with respect to the adjacent portion of the bar and comprising a length n as shown in figures 2 and 3 3. 3 Definitions For the purposes of this document.3 calculated length calculated length of a bar. 3 .1 bend end portion of a bar. 1.4 corner change of direction in a bar other than a bend or hook 3. rounded up to the nearest 50 mm 3.1 General 4. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 3.Copyright protected.1.7 run-off leg portion of a bar which is undimensioned and the dimension of which may deviate from the intended dimension. 4 . For deformed reinforcement.4 4 Bending dimensions 4. the extremities of the deformation shall be taken as forming the outside surface. bent through 180° with respect to the adjacent portion of the bar and comprising a length h as shown in figures 2 and 3 3.2. as explained in 4. shall be the external (outer) dimensions of the bends as shown in figure 1(b) and figure 1(c)).e.6 hook end portion of a bar.5 cutting length total length (subject to a tolerance of ± 25 mm) specified in the schedule for each bar or for wires in each sheet of fabric.1 Unless otherwise stated in a bending schedule. all dimensions given in the schedule shall be measured as shown in table 1 (i. Where so desired.r . use shape code 51 A + B + C . a These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. see note 1 of 4. NOTE 4 The length formula is approximate and when bending angles exceed 45°. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel.14d a Shape code If B or D > 400 + 2d. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire.57d 39 If B > 400 + 2d.1.5.5 A + B .2. the standard radius r for corners may be increased. SANS 282:2011 Edition 6 Table 1 — Measurement of bending dimensions 1 2 3 Method of measurement of bending dimensions Calculated length (measured along centre line) Information (sketch and dimensions) to be given in bending schedule 4 20 A Straight 36 (A + C + E) + 0.3.57 (B + D) . 5 . see note 1 of 4.2.½r .Copyright protected.3. NOTE 1 r indicates the minimum values in figures 2 and 3. NOTE 2 The dimensionless sections of the bars are the run-off legs.r .d 37 If r is non-standard. See 4.1.2d A + 0.2d 38 A + B + C . but shall not apply to end anchorages denoted by h or n.57 B + C .2. but shall not apply to end anchorages denoted by h or n. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 Table 1 (continued) 1 2 Shape code Method of measurement of bending dimensions 3 Calculated lengtha (measured along centre line) If angle with horizontal is 45° or less 4 Information (sketch and dimensions) to be given in bending schedule A+B+C otherwise see note 4 41 If angle with horizontal is 45° or less 42 A+B+C+n otherwise see note 4 If angle with horizontal is 45° or less 43 A + 2B + C + E otherwise see note 4 If angle with horizontal is 45° or less 45 A+B+C-½r-d otherwise see note 4 If angle with horizontal is 45° or less 48 A+B+C otherwise see note 4 Where so desired. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel.Copyright protected. . NOTE 1 r indicates the minimum values in figures 2 and 3. NOTE 2 The dimensionless sections of the bars are the run-off legs. NOTE 4 The length formula is approximate and when bending angles exceed 45°.2. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire. See 4.3. a 6 These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. the standard radius r for corners may be increased.1. 43 R .2. a These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions.4d 53 Where so desired./2 r . See 4.3.1. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.0. 7 .1. the standard radius r for corners may be increased.3d 52 A+B+C+D+E -2r . SANS 282:2011 Edition 6 1 2 Shape code Method of measurement of bending dimensions 49 3 a Calculated length (measured along centre line) If angle with horizontal is 45° or less 4 Information (sketch and dimensions) to be given in bending schedule A+B+C otherwise see note 4 A + B . NOTE 4 The length formula is approximate and when bending angles exceed 45°.21d 51 If R is standard. use shape code 37 If R > 200 mm See note 1 to 4.Copyright protected. but shall not apply to end anchorages denoted by h or n.5 3 A + B + C + D . NOTE 2 The dimensionless sections of the bars are the run-off legs. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel.2. NOTE 1 r indicates the minimum values in figures 2 and 3. NOTE 2 The dimensionless sections of the bars are the run-off legs. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.3d 60 Where so desired.2d 4 Information (sketch and dimensions) to be given in bending schedule 54 A+B+C+D+E -2r .4d 55 2A + 2B + 2n . a 8 These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel.2. . but shall not apply to end anchorages denoted by h or n.3. See 4.r . SANS 282:2011 Edition 6 Table 1 (continued) 1 2 Shape code Method of measurement of bending dimensions 3 a Calculated length (measured along centre line) A + B + C .3r/2 . NOTE 4 The length formula is approximate and when bending angles exceed 45°. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire.Copyright protected. NOTE 1 r indicates the minimum values in figures 2 and 3.1. the standard radius r for corners may be increased. 3. a These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel. but shall not apply to end anchorages denoted by h or n. NOTE 1 r indicates the minimum values in figures 2 and 3. the standard radius r for corners may be increased.Copyright protected.3r/2 .2d 72 See note 3 2A + B + C + n .3d 73 Where so desired. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire. See 4.r . SANS 282:2011 Edition 6 Table 1 (continued) 1 2 Shape code Method of measurement of bending dimensions 3 a Calculated length (measured along centre line) 4 Information (sketch and dimensions) to be given in bending schedule If angle with horizontal is 45° or less 62 A+C otherwise see note 4 A 65 2A + B + 2h . NOTE 4 The length formula is approximate and when bending angles exceed 45°.1.2. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. NOTE 2 The dimensionless sections of the bars are the run-off legs. 9 . NOTE 4 The length formula is approximate and when bending angles exceed 45°.2.5d 75 2A + r + d + 2h 81 For larger radii. See 4. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire. .2r . This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. a 10 These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. SANS 282:2011 Edition 6 Table 1 (continued) 1 2 Shape code Method of measurement of bending dimensions 3 a Calculated length (measured along centre line) 4 Information (sketch and dimensions) to be given in bending schedule 2A + 3B + 2n .2r . NOTE 1 r indicates the minimum values in figures 2 and 3.4d 74 A + B + C +2D + E + n .Copyright protected. NOTE 2 The dimensionless sections of the bars are the run-off legs. note to table 5 and refer to shape code 99 A + 2B + C + D .5.5 r/2 . but shall not apply to end anchorages denoted by h or n.2.3.1. the standard radius r for corners may be increased. see 4. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel.4d 83 Where so desired. Where so desired. SANS 282:2011 Edition 6 Table 1 (concluded) 1 2 3 Method of measurement of bending dimensions Calculated length (measured along centre line) 4 a Shape code Information (sketch and dimensions) to be given in bending schedule A + B + 0.57d 85 If C is greater than 400 + 2d.2. the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the centre line of the bar or wire. D.5 C B (A d)2 B2 X Where X = 2 · · (A-d) and B does not exceed A/5 or 150 mm. Where an additional turn is required at the helix' end(s). Provide either a dimensioned sketch or a referenced sketch with dimensions A.3.2. E/R shown in the schedule 99 All other shape codes The dimension that is to allow for the permissible deviation shall be indicated. whichever is the least. the standard radius r for corners may be increased. C.1. 86 There shall be at least two full turns in the helix. but shall not apply to end anchorages denoted by h or n. see 4.½r . as shown in the relevant cases in column 4 of this table.57C + D .2. NOTE 4 The length formula is approximate and when bending angles exceed 45°. B. it shall be treated as a shape code 99. NOTE 1 r indicates the minimum values in figures 2 and 3.Copyright protected. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. a These lengths are approximate and generally involve a slight positive difference from the exact mathematical expressions. 11 . NOTE 2 The dimensionless sections of the bars are the run-off legs. NOTE 3 Ensure that dimension B is greater than 14d for smooth mild steel and greater than 18d for deformed steel. See 4. 4.1.3 The individual dimensions of a bar specified in a bending schedule shall be subject to the tolerances given in table 2.1.2 Dimensioning reinforcement that requires special end preparation shall be consistent with the method of dimensioning for the reinforcement schedule. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. 12 . SANS 282:2011 Edition 6 a) Slope of cranked bars b) Dimensions of cranked bars c) External dimensions of bent bars Figure 1 — Cranked and bent bars 4.Copyright protected. Copyright protected. in lengths considerably in excess of 13 m. 4.1.2.1. NOTE 2 Certain bar types are supplied in coils. of size 18 m × 2. each bent bar shall fit inside an imaginary rectangle. Where a non-standard radius is specified (for example.1. as given in figures 2 and 3) shall apply to all shape codes. shape codes 51 and 65). bend and hook allowances (r. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.1. as applicable.6 The standard values for minimum radii.2 m. i.4 The dimensions for the scheduling of reinforcement bounded by concrete faces shall allow for the appropriate tolerances shown in table 2.e. then the bar shall be treated as a "non-standard" bar (code 99) in accordance with 4. although longer lengths can be obtained by special agreement with the supplier. 4. If larger values are required. SANS 282:2011 Edition 6 Table 2 — Cutting and bending tolerances Dimensions in millimetres 1 2 3 Method of forming Length Tolerance Cutting Bending Straight lengths (including reinforcement for subsequent bending) 1 000 mm > 1 000 to > 2 000 mm ± 25 ±5 2 000 mm +5 -10 +5 -25 4. it shall be not less than r.2. n and h respectively. 13 . check with the manufacturer as to which steel is available in roll form. plus the tolerances allowed for formwork and concrete cover to reinforcing bars.5 To facilitate packing for transportation. For helical bars (shape code 86 in table 1). NOTE 1 Normally the length of a bar should not exceed 13 m. Copyright protected. Figure 2 — Minimum hook. bend and radius allowances for hot-rolled mild steel bars that comply with SANS 920 14 . This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 Dimensions in millimetres 1 2 Nominal size of bar d Hook allowance h Bend allowance n Radius r a a 6 100 100 12 3 4 5 6 7 8 9 10 8 100 100 16 10 120 100 20 12 120 100 24 16 160 100 32 20 200 120 40 25 260 160 50 32 320 200 64 40 400 240 80 Non-preferred. Figure 3 — Minimum hook.2 The preferred shape codes are given in table 1 (see also annex A).1 General 4. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 Dimensions in millimetres 1 Nominal size of bar d Hook allowance h Bend allowance n Radius r a 2 3 a 6 100 100 18 a 8 100 100 24 4 5 6 7 8 9 10 120 100 30 12 160 100 36 16 200 120 48 20 240 140 60 25 300 180 75 32 400 220 96 10 40 480 260 120 Non-preferred.2.1. Shapes that do not have a specific shape code number as given in table 1 shall be coded "99" (see table 1).2 Scheduling 4. 4. 15 .1.Copyright protected.1 Each bar or sheet of fabric shall be scheduled completely and without reference to earlier schedules.2.2. bend and radius allowances for high yield stress steel bars and cold-worked steel bars that comply with SANS 920 4. the dimension of the run-off leg (see column 4 of table 1). D and E/r of the schedule.5 No dimension given in table 1 shall be given a zero value.Copyright protected.1. SANS 282:2011 Edition 6 4. B.2.1. its dimensions being shown in the appropriate columns headed A. the sketch shall be fully dimensioned or reference dimensioned in accordance with table 3.4 For all shapes.2. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.2. 4. C. 16 . as this will change the basic shape.3 If coded as 99. shall be allowed to deviate from its intended length by the sum of all tolerances. 4.1. This schedule complies with this standard. 5 8 9 10 11 12 25 Shape code c 32 mm A c 40 mm B Drawn mm c C Checked Drawing ref: mm c D Date c E or r mm Bending. Y = High tensile (450 MPa) to SANS 920 R = Mild steel (250 MPa) to SANS 920 Total H. size and No.T M. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.: Section Project Rev: Fixing and non-standard bending details Copyright protected. Cutting length in multiples of 50 mm. in each 2 Mark.S No. dimensions for shape codes (SANS 282) in multiples of 10 mm 7 Table 3 — Example of a bar schedulea c 13 Schedule No. of Member 1 16 6 b 20 mm Length Masses Total No.8 Diameter 10 4 12 Bar mark Reinforcing Type and diameter 3 c b a Bending dimensions in multiples of 10 mm. SANS 282:2011 Edition 6 17 . 4 The length of material to be used in the determination of the calculated length to form a bend or hook shall be as given for n or h in figures 2 and 3. and three times the size of the bar. b) 12d for material with a characteristic strength of 450 MPa and not exceeding 20 mm diameter. and c) 6d for material with characteristic strength of 450 MPa.2. 4. b) 4d for material with characteristic strength of 450 MPa and not exceeding 20 mm diameter.2. shall be not less than the following: a) 10d for material with a characteristic strength of 250 MPa. as shown in figure 4.2.1 Unless otherwise stated in a bending schedule.3. 18 . and c) 14d for material with a characteristic strength of 450 MPa and exceeding 20 mm diameter. 4. as shown in figure 1. Figure 4 — Example of bar with more than one bend 4.2. in the case of high yield stress steel bars and cold-worked steel bars (see figures 2 and 3). in the case of hot-rolled mild steel bars.2 For all shapes with two or more bends in the same or opposite directions (whether in the same plane or not).2.2.2 Hooks and bends 4. 4.2.2. The value of this straight portion shall be not less than the following (see SANS 920): a) 4d for material with characteristic strength of 250 MPa. SANS 282:2011 Edition 6 4. subject to variations as may follow from tolerances in other portions of the bar.1 The internal radius of a bend. Where so desired. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.3 Radii of bends 4.2. the overall dimension given in the schedule shall always include a minimum straight length between the curved portion of the bends. hook or corner of a bar (where the radius is not specified as r as in table 4 or can be determined from dimensions) should be twice the nominal size of the bar. The angled length. This change shall be indicated as shape code 99. as relevant.2. the proportions and dimensions of the hooks and bends shown in column 4 of table 1 shall conform to the appropriate values given in figures 2 or 3.2.3 The overall off-set dimension of a crank shall be not less than twice the diameter of a circle that circumscribes the bar or the wire. the radius for corners may be increased.Copyright protected. 2.2. as applicable. 4. SANS 282:2011 Edition 6 4. 19 .1 or 4. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.3.2. shall be not less than the radius as specified in 4.3 Corners in non-standard bars shall comply with 4.2.3.2.3.3.1.3.2 The internal radius of corners marked with a radius r or where the radius can be determined from a dimension.Copyright protected.2. See SANS 1024. Z = Cold drawn wire rod (458 MPa) Y = High tensile (450 MPa) to SANS 920 R = Mild steel (250 MPa) to SANS 920 290 H.T 10 Masses 300 25 12 Y08 Y10 Total Type and no.20 12 6 Diameter 4 290 977 977 c b a Specified in multiples of 5 mm. mm c E or r 18 c SANS 282:2011 Edition 6 .S 3 No. No. of diameter of wires wire 240 8 5 6 250 100 mm Pitch Reference or sheet details 20 Total M. of of wires/ sheets sheet 2 02 Fabric mark 1 2450 6600 mm Length 7 9 a 25 300 O1 O3 50 300 O2 O4 Overhangs 8 Drawn 11 2450 mm Sheet width b B Checked Drawing Ref: 6600 mm Sheet length b L 10 Date 20 38 Shape code 12 13 14 15 16 Schedule No. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.: Section Project Bending details c 150 mm A 6300 mm c B mm c C D c 17 Rev: mm Special details or bending dimensions Table 4 — Example of a fabric schedule (non-standard sheets) Copyright protected. Specified in multiples of 25 mm. If necessary. shall be supplied straight and the required curvature can be obtained during placing. the cutting length should make allowance for these lengths to be removed from the radiused portion. Table 5 — Maximum bending radius 1 2 Nominal size of bar Critical radius mm m 8 10 12 2. 21 .1 General NOTE The purpose of the provisions given in this clause is to obtain uniformity in the compilation of bar and fabric schedules.5 16 20 25 5 7 17 32 43 NOTE If a larger radius is required. NOTE 2 A section of up to 300 mm at each end of a bar cannot be radiused. as shown in figure 1(a). 4. NOTE 1 For shapes with straight and curved lengths (for example. shall be bent to the required curvature before being placed in its final position.2.1 Unless otherwise stated in a bending schedule. 81 and 85 in table 1). shape codes 39. 4.Copyright protected.2. as shown in figure 1(b). the bar should be supplied as a straight bar and the required radius can be obtained during placing (see also notes to 4.5) 5 Bar and fabric schedules 5. The implementation of these provisions should lead not only to easier interpretation of working drawings but also to simplification of the preparation of a bending and cutting list.2. the angle formed at a bend shall be a right angle. a) if the overall height is critical.2. the angle shall be defined by the length of the slope and the rise.4. 51. the largest practical radius for the production of the continuous curve is 200 mm (this value should be checked with the bending yard concerned) and for larger radii the curve may be produced by a series of short straight sections.5 3 3.2.4. and b) if the slope is critical.4 Angles 4. SANS 282:2011 Edition 6 4. the angle shall be defined by a slope length and an offset.2 In the case of an angle of a corner that is not a right angle. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. Reinforcement to be formed to a radius exceeding that given in table 5.5 Curved bars A bar that has to be formed to a radius less than or equal to the appropriate value given in table 5. and i) such other information as the design organization deems necessary for the adequate control and administration of the project. NOTE For computer produced schedules.3 The bar or fabric schedules shall include the statement "This schedule complies with SANS 282". 5. then the revision number shall be shown separately but adjacent to the schedule number. that shall also be displayed on a label (see clause 6).1 The bar and fabric schedules shall be separate and shall be drawn up as shown in tables 3 and 4. the line or lines affected may be indicated by a suitable reference on the schedule. f) the name of the organization responsible for the design of the project. NOTE Where a revision of the schedule is necessary. d) a cross reference to a layout drawing number. e) the schedule number with an optional revision number.2 All hooks. respectively. the assembly drawing of the component may be included on the same sheet as the schedule. SANS 282:2011 Edition 6 5. columns and rectangular column bases (but not only them).3 Bar and fabric marks The bar mark given in column 3 of table 3 and the fabric mark given in column 1 of table 4 shall consist of the identifying numbers or letters (or both). For simple structural components such as beams. the column widths and the size of the schedule may vary from those shown in figure 2 and 3. c) the component type and the location (which shall appear in the title block or elsewhere in the schedule). For non-standard bars. but the sequence of columns should be maintained.1. If the revision number does not form part of the schedule number. Individual schedules shall be done on A4 sheets. which shall be attached to the bars or to the fabric. dimensions of standard hooks. bends and corner radii may be omitted and where so omitted they shall be deemed to be standard values. b) the number of the project. bends and corner radii of bars shown in figures 2 and 3 shall be deemed to be standard values and are not reflected in dimensions in the schedule. The schedule should not be significantly larger than size A4. Such drawings may be produced on A3 sheets on which the width of the schedule should be confined to the nominal width of an A4 sheet. but larger sheets of the A series may be used in such a way that the schedules can be cut or folded to a nominal A4 size. 5. g) the date the schedule was prepared. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. 22 . 5. 5. h) the signatures or printed initials of the engineer and the checker.1.2 Title block The title block shall appear either at the top or at the bottom of the schedule. and no mark should consist of more than three characters. The following information shall be displayed in the title block: a) the name of the project. Bar and fabric marks should consist of a range of consecutive numbers/letters. This should appear close to the righthand edge of the schedule.Copyright protected.1. Where such ranges are inadequate. of strength 450 MPa.6 Bending of fabric reinforcement 5. a) Position of transverse wires 23 . one bending dimension. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. shall be indicated in abbreviated (symbol) form. 5. Y denotes high yield deformed steel bars. shall be indicated as the free dimension. and Z denotes types of steel not covered by R or Y. 5. followed by a single-digit number. of strength 250 MPa.Copyright protected. b) sizes: The size of the bar is given after the symbol and indicates the nominal diameter of the bar in millimetres.4 Type and size In the "type and diameter" column. couplers). the types of steel and the nominal sizes of bars (given in SANS 920).6. as follows: a) symbols R denotes plain round mild steel bars. to allow for permissible deviations. mesh may not be listed on the same schedule as bar reinforcement. Combinations starting with "E" shall be reserved for bar marks where special end preparation is required (for example.5. preceded or followed by a letter. or they shall be supported by a dimensioned sketch. NOTE Where possible. 5. and unless there is an end anchorage bend or hook. The total length shall be given. if different from the values given in figure 2 and figure 3. The r.1 The bending dimensions given in table 3 and table 4 should be multiples of 5 mm.2 Shapes of shape code 99 shall be shown in sufficient detail (see annex A) to facilitate cutting and bending. preferably an end dimension. use either a) a combination of letters taken from the range A to YY. The tolerances in table 2 also apply to shape code 99. or b) a combination of numbers taken from the range 01 to 99. The method for the measurement of dimensions in table 4 shall be used.5. n and h values.1 The sketch in column 13 of table 4 shall indicate the following: a) the direction of bending relative to the transverse wires (see figure 5(a)). shall be given in the schedule.5 Bending schedule 5. and due regard should be given to the applicable requirements and bending tolerances in table 2. SANS 282:2011 Edition 6 The numbers should be taken from the range 01 to 99 and the letters should be taken from the range A to YY. 5. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. to ensure bending about the correct axis (see figure 5(b)). The tolerances given in table 2 shall apply to each length.2 For all bent fabric reinforcement. 6 Bar or fabric label The bar or fabric label shall contain sufficient information to identify the bar or fabric in terms of the relevant schedule.6.7 Cutting length The length of a bar shall be the cutting length as defined in 3. SANS 282:2011 Edition 6 b) the direction of the longitudinal wires of the sheet. the bending dimensions shall not be indicated at positions near welded transverse wires that occur within four diameters of the start of a bend (see figure 6). c) Orientation of an asymmetric sheet Figure 5 — Positions of fabric reinforcement 5. b) Indication of longitudinal wires c) the correct orientation of an asymmetric sheet. to ensure the correct setting out of bending dimensions (see figure 5(c)). 24 . 7 Manufacturing and routine inspection 7.5.1 Purpose-made shearing equipment shall be used for cutting bars to length. Figure 6 — Position of welded transverse wires 5.Copyright protected. 7.2 Bending shall be carried out on power bending machines. Plain smooth surfaces or rolls that do not offer resistance to longitudinal movement of the bars or fabric being bent shall be provided to ensure adequate support. A formal operative approval and testing system shall be implemented and operators shall have been certified by the manufacturer as having achieved the minimum standards of competence. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 7. 25 . The diameter of formers that are used in bending bends and hooks in accordance with figure 2 and figure 3 shall be such that bends and hooks will be provided of the radii given in figure 2 and figure 3. subject to the appropriate tolerances.Copyright protected.3 The manufacturer shall ensure that cutting and bending machine operators are trained in the skills necessary to produce cut and bent products of dimensions within the permissible size deviations and of consistent quality. 8 Quality evaluation Quality evaluation shall be carried out in accordance with SANS 920 in the case of steel bars and in accordance with SANS 1024 in the case of steel fabric. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. Table A1 — Shape codes 26 .1 gives a summary of shape codes.Copyright protected. SANS 282:2011 Edition 6 Annex A (normative) Summary of shape codes Table A. Copyright protected. Detailing of steel reinforcement for concrete. NOTE 2 Radii of all bends are standard unless r is given in the bending schedule. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. SANS 282:2011 Edition 6 NOTE 1 Use shape code 99 for all other shapes. Bibliography SANS 10144 (SABS 0144). © SABS 27 . A dimensioned sketch of the shape shall be given in the bending schedule. NOTE 3 All dimensions are external (outside) dimensions. This page has been left blank intentionally . This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement.Copyright protected. Tel: +27 (0) 12 428 6883 Fax: +27 (0) 12 428 6928 E-mail: sales@sabs. The Centre also offers an individual updating service called INFOPLUS. 2008 (Act No. This does not preclude the free use. and size. which ensures that subscribers automatically receive notification regarding amendments to. Details and advice can be obtained from the Senior Manager. This standard may only be used and printed by subscribers to the SABS Complete Collection of Standards and Related Documents in accordance with a formal copyright agreement. of necessary details such as symbols. and is the official WTO/TBT enquiry point for South Africa. If these details are to be used for any purpose other than implementation.co. 8 of 2008). and revisions of.Copyright protected.za Buying Standards Contact the Sales Office for South African and international standards. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 E-mail: info@sabs. 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