indian standard code-1252

8/22/2019 Indian Standard Code-1252

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IS 1252 : 1991m5h w-m

Tef&rT~*~*~~w~( vm YF*m1I ndian St andard

HOT ROLLED STEEL BULB ANGLES-DIMENSIONS( i rst Revi si on

UDC 66914122 66914-423

@J BIS 1991BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002November I 991 Price Group2

( Reaffirmed 1998 )


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Structural Sections SectionaI Committee, CED 8

FOREWORD( First Revision ) was adopted by the Bureau of Indian Standards, after theStructural Sections Sectional Committee had been approved by the CivilEngineering Division Council.

This Indian Standarddraft finalized by theBulb angles are generally used in ship building and car-building industries. In the preparationof this standard the Sectional Committee specially kept in view the requirements of theseindustries.This standard was first published in 1958. In this revision apart from general updating, thedesignation of bulb angles has been modified.For the purpose of deciding whether a particular requirement of this standard is complied with,the final vaIue, observed or calculated, expressing the results of a test or analysis, shall be roundedoff in accordance with IS 2 : 1960 Rules for rounding off numerical values ( revised). Thenumber of significant places retained in the rounded off vaIue should be the same as that of thespecified value in this standard.


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Indian StandardHOT ROLLED STEEL BULB ANGLES -

DIMENSIONS( First Revisiofl )

1 SCOPE C&= Distance of centre of gravity of the sectionfrom the back line of the web1.1 This standard lays down the nominaldimensions, mass and sectional properties of I=, = M oment of inertia about the X-X axishot rolled steel bulb angIes.2 REFERENCE

&y = Moment of inertia about the Y-Y axis

2.1 The Indian Standard IS 1852 : 1985 Speci- &U = Moment of inertia ( M ax ) about the u-u&cation for rolling and cutting tolerances for axishot-rolled steel products (fourth revi sion ) is anecessary adjunct to this standard. 1~ = Moment of inertia ( M in ) about the v-vaxis3 TERMINOLOGY3.0 For the purpose of this standard, thefollowing definitions shaII apply.3.1 Y-Y Axis - A line passing through thecentre of gravity of the profiIe of the sectionsand paralle1 to the axis of the web. 3.2 X-X Axis - A Iine passing through theccntre of the gravity of the profiIe of the sectionand at right angles to the Y-Y axis.3.3 U-U and V-V Axis - Lines passing throughthe centre of gravity of the profiIe of thesection, representing the principa1 axes of thesection.4 SYMBOLS4.1 Letter symbols used in this standard havebeen indicated in the Figure in TabIe 1. Moreexplicit definitions for certain symboIs used inthe table and figure are given below:a = SectionaI area in sq cmm = Nominal mass in kg per m = 0.785 a

exx= Distance of extreme fibre from the X-Xaxise,, = Distance of extreme fibre from the Y-YaxisZ,,= 15X = ModuIus of section about the X-X

axiszJy = !& = Modulus of section about the Y-Y

CYYaxisrxx=

by = y5YY= Radius of gyration about theY-Y axis

ruu Radius of gyration about the

D = Projection of the bulb from the inside rrr= /Iface of the web Y Vv = Radius of gyration about thev--v ati sC,.= Distance of centre of gravity of thesection from the back line of the flange a = Angie between the U-U and the X-X axis

1
http://../link/15to30/1852.Bishttp://../link/15to30/1852.Bis


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IS 1252 : 19915 DESIGNATION5.1 Hot roIled steel bulb angles conforming tothis standard shall be designated by letters BAfoIlowed by a figure denoting the depth ofIonger side of the angle in mm. * and ** todenote heavier sections.6 DIMENSIONS AND SECTIONALPROPERTIES6.1 The nominal dimension and mass of bulb

angles sections shall be as given in Table 1.Sectional properties of the bulb angles havebeen given in Table 1 for information.

6.2 The robing and cutting tolerancesbulb angIes shall be as stipulated, in IS1985.

of the1852 :

2


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IS 1252 : 1991Table 1 Nominal Dimeosiow, Mnss nod Sectional Properties of Bulb Angles

( Clauses 4.1 and 6.1 )

(1) (2)kg

DA IOU 8.6BA 100 96BA 125 122BA 12s 134BA 150 161BA IJO 188BA 175 200BA 175* 233BA 175** 26.5BA 200 282BA 200 336BA 225 314BA 225 373BA 250 349BA 250* 392BA 175 409BA 275 456BA 300 475BA 300 526

Radi- Centre of Gravity Dirtaaec of Tna CC Momeotr or InertinUPa, .--__L__ Extreme FibrelrSect-ionalArea(4SizeVOx(b) Thick- (0

(3) (4) (5) (6) (7)cm rnrnXrnrn mm mm InIn1094 100x 65 60 60 131217 100 x 65 70 65 131560 ,25x75 70 70 16171 125x75 80 75 162045239425542966

150x75150x75175x90175 x 90

80100

80100120I 01401LO

140I 0130120140130150

809090

1003374359542763994

175x90200 x 90200 x 90225x90

110I I0125110

2020232323262629

475044449965213581560476696

225x90250 Y 90250 x 9027s x 90

125110120120130130140

29333336

275 X 90300 x 90300 x 90

363939

(8)mm

10010011011' 011' 0110135135135135135135

135135135135135135135

(4(9)

mm505055555555656565656565

65656565656565

(1.)(10)InIn404050506060707070808090

90100100110110120120

(11)cm

392395506508652653744746749887889

104

104121120135134150149

G,(12)cm

1431431601611551571891901921861911801.85178181180183182186

lu03)cm608605744742848a47

10061004

(14)En507507590589595593711710

1001 7081113 7141111 7091210 720

1213129313011396140515021508

715722719721717718714

Radii of Gvration

(15) (lb)ml

0291 1430288 15s0248 3220246 3440167 6130162 6860185 l 0700181 11900177 13100136 1 8800131 2 1300103 2 6600098 3 0200075 3 6800072 4 0100057 5 1600054 5 5800042 7 0300040 7 370

1.Xwfw(17)Crn~330357604646714798

137152166172194179

(18)cnl113165339362628703,1101 30

13JO19102 1602 690

202 3 040188 3 700205 4 030213 5 180231 5 600241 7 030260 7 580

(19)m228249433466559634

104117130140160152

175168185197215229248

rxr r,,

00) (21)cm cm

36 174356 17454 197449 194547 187536 183648 232634 227623 222723 219706 213817 212797 206911 206896 2 02995 202980 199

108 200106 197

h rrr(Ml7.z) (Mi)02)cm

37436946646055454265864363272971282180191389899798

108106

(23)cm144143167165165163202199196197193195192195192194

(24)cnP235256432464722811

107119131169192

220249285308370

(25)cm6570

102110120135193214235241273249282260285296

192 397 32 2195 468 336192 502 364

MOdli OfSectioo

2.. Z,(26)

BA100BA 100BA 125BA 125BA 150BA 150BA 175BA 17sBA 175.B4 200BA 200BA 225BA 225*BA 250BA 250BA 275BA 275.BA 300BA 300

3


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Standard Mark IThe use of the Standard Mark is governed by the provisions of the Bureau of IndianStandards Act, 1986 and the Rules and Regulations made thereunder. The Standard Markon products covered by an Indian Standard conveys the assurance that they have beenproduced to comply with the requirements of that standard under a well defined systemof inspection, testing and quality control which is devised and supervised by BIS andoperated by the producer. Standard marked products are also continuously checked byBIS for conformity to that standard as a further safeguard. Details of conditions underwhich a licence for the use of the Standard Mark may be granted to manufacturers orproducers may be obtained from the Bureau of Indian Standards.I


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Bureau of Indian StandardsBIS is a statutory institution established under the Bureau of I ndi an St andards Act, 1986 topromote harmonious development of the activities of standardization, marking and qualitycertification of goods and attending to connected matters in the country.CopyrightBIS has the copyright of all its publications. No part of these publications may be reproducedin any form without the prior permission in writing of BIS. This does not preclude the free use,in the course of implementing the standard, of necessary details, such as symbols and sizes, typeor grade designations. Enquiries relating to copyright be addressed to the DirectorPublications ), BIS.Revision of Indian StandardsIndian Standards are reviewed periodically and revised, when necessary and amendments, ifany, are issued from time to time. Users of Indian Standards should ascertain that they are inpossession of the latest amendments or edition. Comments on this Indian Standard may besent to BIS giving the following reference:Dot : No. CED 8 ( 4873 )

Amendments Issued Since PublicationAmend No. Date of Issue Text Affected

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