IS-13920 2016 Amendments

AMENDMENT NO.1 SEPTEMBER 2017 TO IS 13920 : 2016 DUCTILE DESIGN AND DETAILING OF REINFORCED - CONCRETE STRUCTURES SUBJECTED TO SEISMIC FORCES - CODE OF PRACTICE (First Revision) [Page 1, clause 2, IS I 893 (Part 1)] - Substitute the following for the existing entry: '(Part 1) : 20 I 6 General provisions and buildings (sixth revision)' (Page 2, clause 3.8.1, line 4) - Substitute '7.6' for '8'. (Page 4, clause 5.5 last sentence) - Substitute the following for the existing sentence: 'When irregularities appear in a building as listed in Tables 5 or 6 of IS 1893 (Part 1), the guidance given therein for the respective irregularity in Tables 5 or 6 shall be followed.' (Page 5, clause 6.2.6.2 (a) last sentence) - Substitute the following for the existing : 'a) only those mechanical couplers which are conforming to IS 16172 and capable of developing the specified tensile strength in spliced bar shall be permitted. At any section, not more than 50 percent of bars shall be coupled, and the next location of couplers shall be at least 300 mm away; and' 2) -Insert the following new clause at the end: . 8db.3.l (a). lines 4 and 5] -Substitute 'extension of 8 times diameter (but not less than 75 mm)' for 'extension of 6 times diameter (but not less than 65 mm)'.5 (b)] -Substitute the following for the existing: 'b) 6 times the diameter of the smallest longitudinal bar. clause 6. 6) -Substitute 'HOOP SPACING ≤ d/4. [(Page 6. 4(A) and Fig. (Page 7. and' (Page 7. Fig. 4(B)] -Substitute '8d (≥ 75 mm)' for '6d (≥ 65 mm)'.5. clause 6. and 100 mm'. [Page 6.3. 6db and 100 mm' for 'HOOP SPACING ≤ d/4.3. Fig. clause 6. [Page 7. 'X' and '+' shaped).2. para 2) -Substitute the following for the existing para: For columns of shapes other than rectangular and circular (such as 'T'. (Page 8. line 4) -Substitute '0.1.1.5.' (Page 7. clause 7. Fig.2. 7) -Substitute ' ≥20db' for ' ≥ 15db' in both figures. clause 7. second sentence) -Substitute the following for the existing sentence: . clause 7 .4' for '0.' (Page 7.45'.3 Construction joint shall not be provided in the regions of beam having closely spaced transverse reinforcements.1. appropriate designs and detailing shall be carried out using specialist literature.3. (Page 7. which form part of the lateral load resisting system.1.'6. . 3.2. At any section.' (Page 9.Amendment No. clause 7.2.' . The next section of couplers shall be at least 300 mm away. not more than 50 percent of bars shall be coupled. 1 to IS 13920: 2016 'The design moment of resistance of a column shall be estimated for factored axial forces arising in all load combination using the design P-M interaction diagram. second sentence) .Substitute the following for the existing sentence: 'Further only those mechanical splices capable of developing the specified tensile strength of spliced bar shall be permitted. (Page 9.2 (d).2.Substitute '7.2 (d)] . Fig.4.Substitute 'section.4. (Page 9.' (Page 10. line 4] . [Page 9.6' for '8'. clause 7.Insert the following at the end: 'e) Construction joints shall not be provided in regions of columns with closely spaced transverse reinforcement. [Page 9.' for 'location'.2 (c). clause 7. lines 6 and 7) . clause 7.3. clause 7. clause 7.1. line 2] . 10) .Insert '(h'c or B'c)' after the word 'link'. line 4) . [Page 9.Substitute '8 times' for '6 times' and'< 75 mm' for '< 65mm'.S ubstitute the following for the existing figure: .3.4.4. h"c > 300 rnrn-----i (PROVIDE A CROSS TIE) --.v al al ------+-h'c ≤ 300 mm .≤ 300 mm h SHALL BE LARGER OF h'c and B'c 10A 108 . Amendment No.'-' d .8d(�75 mm)--+--� E E E E 0 0 d 0 0 M M VI VI . 1 to IS 13920: 2016 i---. . ID _______.s 300mm h SHALL BE LARGER OF h'e and B'e 10A 108 . Amendment No..u co I.8d(�75 mm)--+--� E E 0 0 d M VI VI d ._ h'c s 300 mm . 1 to IS 13920: 2016 ---h'c > 300mm-----i {PROVIDE A CROSS TIE) �-. ONSECUTIVE CROSS TIES ENGAGING THE SAME LONGITUDINAL BAR HAVE THEIR 90' HOOKS ON OPPOSITE SIDES OF COLUMN 1----.> 300 mm----1 s s 300 mm 10C FIG. l to lS 13920: 2016 i->-------t+-----t-t--<. COLUMl':S . IO DETAIL OF TRANSVERSE REINFORCEMENT r. Amendment No.-. delete the words ‘in beams’ and in line 2 delete the word ‘and’ [Page 11..Amendment No.1 (b)] – Substitute the following for the existing: 'b) have a spacing not more than 6 times the diameter of the smallest longitudinal reinforcement bars. 11) .6' for '8'. and in line 1.r-·. Fig.' (Page 11. clause 8) -Substitute '7. I l >.Substitute the following for the existing figure: f DD hSI . t L .6..1’. 1 to IS 13920: 2016 (Page 11. -- ··. clause 8.1. line 1) . . _ _J . clause 8.Renumber the clause as: ‘7.. (Page 11. . CONFINING ' REINFORCEMENT AS PER 9.a:: <( -' a:: � <( (. w t - C) Cl) �� 0:: w .. Fig. � TRANSVERSE z <( REINFORCEMENT z I..) z � � LU t Q.- t - _o i JOINT R EINFORCEMENT AS PER 9.s> I CONFINED JOINT WITH BEAMS FRAMING INTO ALL FOUR S IDES . I to IS 13920: 2016 (/'age 12. l ====-...3.- .._ r==- I t===- �h51/4 .... • AS PER 7...2.1 FIG. a:: I- �• UJ z Q.- - .. Amendment No.s> � �� I I\ .Substitute the following for the existing figure: - =-t.) u I.......2. 12 COLUMNS AND JOINT DETAILING .1 t ' _o - .w <f) . a:: w (I) 2:hSI (. 12) .2. 2:h•. wU SPLICE z u.14 = <f) � t .. w z � >0 0:: a:: z u..1 0 UJ <(�a. 1 (a) (1) and 9.Renumber the clause as '7. clause 8. line 2).5'. clause 9. (Page 13. (Page 13.2'.Renumber the clause as '7. 1 to IS 13920: 2016 (Page 12.2.5) . [Page 14.6' for '8'.6.Renumber the clause as '7. (Page 12.4) . Amendment No.1 (b) (2). (Page 12.1. clause 8. clauses 9.3) .Substitute '7.3'.6. line 2] .4'.2) .Insert 'and the shear wall' before the word 'parallel'. clause 8.Renumber the clause as '7. clause 8.6.3.6.2. . clause 10. line 4) . clause 11.6' for '8'. 1 to IS 13920: 2016 [Page 15. .4. (c) (7)] . [Third cover page.6' for '8'. line 5] . Table 1. Sl No. Sl No.6. clause 10.5. col 3] . line 3) .2 (b). Table 1.Substitute '7. Foreword.web' for ‘ρh’ in the formula for (ρh)min· (Page 16.6' for '8'. Sl No.Substitute 'Lw' for 'tw' in the formula for (ρv)min· [Page 15. (c) (6)] .1.2. Foreword. [Third cover page.5.Substitute 'ρv. clause 11.1(c)'. (iii). (Page 18.Substitute '7.2.Delete.Substitute '7.6' for '8'.Amendment No. Sl No. (i).Substitute '7.2.Substitute '7. (Page 16. line 1) . (Page 18.1(c)' for '8. col 3] . 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