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13 M ARCH I, 19215-10ADDITIONALBETHLEHEMSTRUCTURAL SHAPESADDITIONAL BEAM SECTIONSANDSUPPLEMENTARY COLUMN SECTIONSMANUFAO'l'URBD BYBETHLEHEM STEEL COMPANYBETHLEHEM,PA.GENERAL OFFICES:At the Works , Bethlehem, Pa.BRANCH SALES OFF ICES:BOSTON, 141 Milk Street.NEW YORK, 111 Broadway.PHILADELPHIA, Morris Building.ATLANTA, Candler Building.PITTSBURGH, First National Bank Building.CLEVELAND, Guardian Building.CHICAGO, Peoples Gas Building.SAN FRANCISCO, Monadnock Building.Copyright, 1921, Bethlehem Steel Company.

2BETHLEHEMSTEELCOMPANY.EXPLANATORY NOTES.Large additional mi11 capacity, recently completed and putin operation for the production of wide flange structuralshapes, has made it practical to add a number of new sectionsto our present established line of Bethlehem StructuralShapes. These new sections are now available and areshown in this pamphlet.Three new beam sections are provided, viz.: B24b, B22and B18a. The new 24" and 18" beams, B24b and B1Sa,are to supply the need for heavier 24" and 18" beams havin a greater carrying capacity than our previous line of 24'and 18" beams afforded. The new 22" beams, B22, supplysections intermediate in depth hetween 20" and 24", andwill be found a desirable and economical addition to therange of beam sizes.The comparison of the new 24" and 18" Bethlehem Beamswith Standard Beams, is as follows:BethlehemBeams.B24b, 104.5 lbs.99.5Ibs.B1Sa, 9StandardBeams.24", 115.0Ibs.105.9Ibs.18", 8Particular attention is called to the manner in which theincrease in weight of these beams is obtained by increasingthe thickness of the flange as well as that of the web, insteadof obtaining the entire addition in weight by increasing thethickness of the web only. as in previous methods. Thisentirely new method, on which patents are pending, permitsobtaining an increase in Section Modulus practically pro;x rtional to the added weight. Thus B18a, 74 lbs., compared with B1Sa, 69 lbs., has an increase of 9.7 in SectionModulus, or about 7% per cent increase in modulus, due to theincrease of 5lbs. in weight, which is about 7% per cent increasein weight also. By the process of manufacture the additionto flange thickness is made to the outside of the flange therebyslightly increasing the depth of the beam, but the totalvariation in depth between minimum and maximum is not

BETHLEHEMSTEELCOMPANY.3more than the usual allowable tolerance in depth necessaryin any method of rolling beams.A considerable number of new Column Sections are provided, supplementing our previous list of H Columns, andaffording a line of sections lighter t han our regular H Columns.These supplementary column sections are to supply lightercolumns for many purposes, including shop and mIll buildingconstruction. A series of 6" columns, in various weights, isprovided for specially light construction.The flanges of the new beams have a bevel of 8% per cent,or a slope of 1 in 12. Flanges of the column sections havea uniform slope of 2 per cent.All wei hts include fillets, but areas and all other properties are gIven exclusive of fillets.Tolerances in weight and section, and alI other regulationsconcerning material, lengths, etc., conform to the establishedrules applying to our regular Bethlehem Sections.BENDING FACTORS.-To aid in the selection of columnssubjected to direct loads and also to bending produced byeccentric loads or by other means, bending factors are givenwhich furnish a convenient and practical method of converting the bending moment into an equivalent direct central load.pI -centrally applied load, ;n Ibe.P" -eccentric load, in 100.m -bending moment, in inch Ibs., produced by plIop",-an equivalent central load, in 100., producing thesame maximum stress as bending moment.P -total equivalent load on column, in 100.f -fiber stress, Ibs. per sq. in., due to bending .S -section modulus about axis of bending.A -area of section, square inches.k -bending factor - A -;- S.mP'"Then, f - S' and by assumption A - f.ButaskandAmkp",S' then f - A - A 'Therefore, pili - mk,P - pI P" P'" - pI P" mk.Hence, if the bending moment, in inch 100., is multipliedby the bending factor, k, the product is an equivalent centralload on the column producing the same compressive stress s the bending moment.

BETHLEHEM STEEL COMPANY.4ADDITIONAL SECTIONS.BETHLEHEM I BEAMS.1 -------- 9. 75 - - -.:BIIiL::Yo. 60"RB 24b99.5 Lbs.0IIIIII0525"·w "IIIIII-2.4"IIIIIIIIIIPatents pending onthese Sections.IIIIIIIIII[N1.089"0j?5" ll:" '!, 1 .J,Section Weight, NominalLbs.Depth NomNumperof Beam, 232F;t.;IDIMENSIONS, IN INCHES.BW24.09 9.775 .550.750 1.134 4.61324.00 9.750 .525.705 1.089 4.61323.91 9.730 .505.660 1.044 4.613MNFR-:60.60.60

5BETHLEHE M STEE L COM P A NY.ADDITIONAL SECTIONS.BETHLEHEM I BEAMS.r --------8. 50 "-------- :B:LJIIIk-- -- -----8.7fJ!- -- ----- .JB:lL l% . 50 "R-.IIIIIIIIIIB 220IIIB 18a065.5 Lbs.III 0. 385':;IWIIJ(f0.50 "R69.0 Lbs.0. 42W cL: r-III12 2"8"IIIIIIIIIIIIIIIIIIIIIIIIIIIr[N0.8 s1817Ys--J J,,'JjF----.,4 165"I---- T I4. 058"I' 1 -----. ----- 1Section W eight . NominalLbs.Depth Nom,Num,perof Beam. inalber.Inches.Foot.00.585"'-. 0-,)85" f-- --- - - -N0.9 Patents pending onthese Sections.D IMENSIONS. IN I NCHES.-BWMNFR- - - - -- - - - - -22.1 2 8.535 .420 .545 .883 4.05822.06 8.520 .405 .515 .853 4.058.50.5022.00 8.500 .385 .485 .823 4.058.5018.12 8.770 .440 .645 .992 4. 165.5018.00 8.750 .420 .585 .932 4.16517.88 8.730 .400 .525 .872 4.165.50.50

6BETHLEHEM STEEL COMPANY.BETHLEHEM COLUMNS .SUPPLEMENTARY SEOTIONS.0.576"-- f , -,IIrIII1--.11------- --13.625!!------ --"gIIof1'1ooNTI'0.39"I ; 1rPO.60"0. 692'i 69.0 Lbs.II1MINIMUMSECTIONI11.LFor increased weights and dimensions, see page 12.0. 533 U-.ll"r'I1IIH 10'0od.,.1---------13.5 --- --- --iNco1 * 0 . 35 " !t-l00.60 "tIIMINIMUMISECTIONII--v0.630 ''''55.0 Lbs.1For increased weiohts and dimensions, see page 12.

BETHLEHEM STEEL COMPANY.BETHLEHEM COLUMNS.SUPPLEMENTARY SECTIONS.0. 91"-- j t I I, '--Tr- ---------13.37 ------- -IIIH 8 8cO,,,,J 0 .3 1' , -1? 0.60"Iro. 567 )43.0 Lbs.MINIMUMSECTIONFor increased weights and dimensions, see page 12.0.524"-.,IIr IIII,H 10"ood.,.---- ----11.625 ---- --IIJ l.:J 1! 0.35"0.620,jI,I-J52.5 Lobs MINIMUMSECTIONFor increased weights and dimensions, see page 12.7

8BETHLEHEM STEELCOMPANY.BETHLEHEM COLUMNS.SUPPLEMENTARY SECTIONS.0481"- i11i - -----------11.50c:---------1' --IiI ,r---T, 14ti!)11cp1H 8,111. 0. 31 "oo'f1. . . .J 0.60"1T0.558' 40.5 Lbs.MINIMUMSECTION111I.LFor increased weights and dimensions, see page 12.0.408" IIr111"i - -------9.625 -------8"oo XiI1111IL:::! cp111H.!Q---rIjO.28"1 tt- i0.486"33.5 Lbs .MINIMUMSECTIONFor increased weights and dimensions, see page 14.

BETHLEHEM STEEL C O MPANY.BETHLEHEM COLUMNS.SUPPLEMENTARY SECTIONS.0.351", I- 1 1 I Ir 1I I"',',IH 6.5LON I8--T, I--------7.75'.'- -----11} 0.25 ";:' * :'7LoLOcO(.J O 40 "1T0.413"I23.5 Lbs.1II.J-MINIMUMSECTIONFor increased weights and dimensions, see pag e 14.rI11-----6.00"----IH6"oo'f20.0 Lbs.III1.:LMINIMUMSECTIONFor increased weights and dimensions, see page 14.9

10BETHLEllEM STEEL COMPANY.PROPERTIES OFBETHLEHEM I BEAMS.ADDITIONAl. SECTIONS.VI"------.1,.--'1I!----- I -----.!I1I I'---,YAxISISectionNumber.XX.NominalWeight, Area Thick- WidthDepthofnessRadiusofLbs.Momentofof tion,ofSectionFlange,perofBeam,Square Web,Gyra- Modulus.Inches. Inertia.Foot.Inches.Inches. Inches.tion.IrS246.4234.3222.8--- --- -- - - - - -- --- -- --24* 104.5 30.63 .550 9.775 2967.799.5 29.15 .525 9.750 2811.724B24b23H95.5 27.79 .505 9.730 2663.19.84D.829.7922Ys71.5 20.88 .420 8.535 1705.268.5 20.04 .405 8.520 1629.365.5 19.08 .385 8.500 1549.59.049.029.01154.2147.7140.974.0 21.61 .440 8.770 1238.069.0 20.20 .420 [8.75011142.564.5 18.79 .400 8.730 1048.57.577.527.47136.6126.9117.322l B222218Ys18B1Ba17 1W Safe load in pounds, uniformly dislributed, including weighl of beam.L Span, in feel.M Momenl of forces, in fool pounds.I AJlowable Fiber Stress, Ibs. per square inch.S Scction Modulus.

BETHLEHEM STEELCOMPANY,11PROPERTIES OFBETHLEHEM I BEAMS,ADDITIONAL SECTIONS.VI ---------.!,YCOEFFICIENTS OF STRENGTH.FF "'AxISS';;ess' ',/ For Fiber For Fiber16000 Lbs Stress ofStress ofIn.' 12,000 Lbs. 18,000 Lbs.UsualBuild- per Sq. In. per Sq. In.ingCodeRe- For Movmg For QUlesquirement.Loads.cent Loads.pe Sq.C'CC"YY.MaximumSafeSectionMo- RadiusShearmentofSection Numon fneb,ofGyra- Modulus. ber.Pd Inertia. tion.oun s.I'--- --r'--S'-----2,628,000 1,971,000 2,957,000 104,300 132.92,499,000 1,874,000 2,812,000 95,900 124.82,376,000 1,782,000 2,673,000 89,300 117.12.082.072.0527.225.624.1B24b1,645,000 1,233,000 1,850,000 62,5001,576,000 1,182,000 1,773,000 58,2001,503,000 1,127,000 1,690,000 ,000 1,093,000 1,640,000 66,1001,354,000 1,016,000 1,523,000 60,8001,251,000 938,000 1,407,000 55,60082.975.668.41.961.931.9118.917.315.7B18aC, C', and C" Coefficients given in the table.CC'C"l\r 'L' or L' or LM C8'orC'8'orC"8'C, or C', or C" WL 8M -i f S

12BETHLEHEM STEEL COMPANY .DIMENSIONS ANO PROPERTIES OFBETHLEHEM COLUMNS.14" AND 12"SUPPLEMENTARY SECTIONS./TT r -j':- f, I/,"M!.'G,I!-. IW N11:L ,.:II?IJ\.----B- --ojWeightofSectionSection,-NumLbs. Nom- Nomber. t.DIMENSIONS, IN 39.701.764.692.755.817.88010.000410. 45.808---- -- -- -- -- -- -- -- -43.0H 48.0 13H853.558.513%55.013H13 16%*isH 61.5 13%%13 ll.133i 13%%13 ll.10 67.573.569.0H 76.012 83.090.0-- -H 840.545.550.555.052.558.0H 64.01070.01.18Ys ll-h11-h133i18% 11 f. .Ll1418H 111\I"---- -- -- -- -- ---8.00 .31 .481 .558 14llH9-hH8.04 .35 .543 .620 14Ys 9-h11% is8.08 .39 .606 .683 14 9-h11 %8.12 .43 .668 .745 14% 9-h113i .1.1.1.18 1.ll %11 113i12ft;%* 15/or15ft15n15*9-h9-h9-h9-h

BETHLEHEM STEEL COMPANY.13DIMENSIONS AND PROPERTIES OFBETHLEHEM COLUMNS.P14" AND 12 'SUPPLEMENTARY SECTIONS. - -,.YW Fh .AxiS YY.AreaRadiusRadiusofMeBendBend- Me- Section ofofise!:t.lon· Se f . ment Sectionment Modu- GyraingLts.cionModu- Gyra- ingofofFactor.Ius.tion,FactorSquaretion,Ius.er. Inerlia.ool. Inches . Inertia.Inches.Inchesk'I'S'r'rkSIAxiSXX.Ic- -- -- ------ -- -- --43.0- 12.28 397.6 59.5 5.69 .207 43.6 10.9 1.88 1.12748.0 13.82 450.9 66.853.5 15.37 505.6 74.258.5 16.93 561.6 .41.90 1.1181.91 1.1101.92 3673.7742.780.189.098.0107.15.825.845.875.90.199 93.1.199 104.8.200 116.8.200 52.972.983.00.689.683.678.674- - - - - - - - r--- - - - -f - -- -- .961.0811.0711.0631.05552.558.064.070.015. 8.55.045.065.095.12.229 91.5.229 103.2.229 115.1.229 807

14BETHLEHEM STEEL COMPANY.DIMENSIONS AND PROPERTIES OFBETHLEHEM COLUMNS.10'; e" AND 6"SUPPLEMENTARY SECT1ONS./ /Tr' --l:-r:,III"'G,W :'? ' -- L1M"f /:II!-.--j.---B- -- lWeighofSection Section,Num- Lbs.Nomber.perinalFoot.DIMENSIONS, IN INCHES.NominalBTWMNeGL-- -- -- -- -- -- -- -- -- --10H833.538.042.547.59%-ft9 .548.611.67312Y27} 12% 7lift12 7{-t9Ys1012Ys 7 U%16-- -- -- -- -- ---- -- -- -23.57 % 6.50 .25 .351 .413 10% 6%.LH 27.0 7Ys 16 6.53 .28 .413 .476 1O}4 6%86.5 30.5Y2 6.56 .31 .476 .538 10% 6%34.58% i 9ij 6.60 .35 .538 .601 10Y2 6%-- -- -- -- -- -- ---- -- -20.068Y2 4%% 6.00 .25 .346 .4046.02 .27 .409 .4668ft 4%23.06% .L1&26.56X8H- 4%Y2 6.06 .31 .471 .52996.10 .35 .534 .59130.08 i16l 4%6% 16H68!A33.54%6 '2 % 6.14 .39 .596 .654166.18 .43 .659 .71637.06%9h 4%6.22 .47 .721 .77940.56 9ft 4% »

BETHLEHEM STEEL COMPANY.15DIMEN SI ONS AND PRO PERTIES OFBETHLEHEM COLUM NS.10'; a" AND 6"SU PPLEMENTARY SECTIONS .L l -',YAxIS XX.AxIS YY.WeIghtofAreaHad iusHad iusMoMoof ion,SectionofBend· ment Section ofBendLbs. Section, ment Modu- GyraingModu- nertia. t. Inches. Inertia.Inches.Inches.- - - - -I- -S- -r33.5 9.60 166.2.38.0 10.89 192.042.5 12.29 219.447.5 13.70 247.6-23.527.030.534.5---- --6.72 74.67.76 88.28.82 102.39.97 117.4-- --20.0 5.8123.0 6.6926.5 7.6930.0 8.7033.5 9.7237.0 10.7640.5 -4.164.204.234.25- -k.278.276.277.277-I'- -S'- -r'- -k'36.6 9.1442.4 10.5648.5 12.0254.8 11.240- - -- ---- 732.76.451.446.445.445.444.443.442-- -- --5.176.117.078.07-- .599.52- -- -