AISC 1942 WAR Specification.pdf

7/30/2019 AISC 1942 WAR Specification.pdf

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"'-! WAR PRODUCTION BOARD~ ~ ; NATIONAL EMERGENCY SPECIFICATIONS; . , I ~ FOR THE~ -

CODESPEC1942

8639

DESIGN. FABRICATION AND ERECTIONOF STRUCTURAL STEEL FOR BUILDINGS

DATIED .,.., * 10, ,. .


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WAR PRODUCTION BOARDNATIONAL EMERGENCY SPECIFICATIONS

FOR THEDESIGN . FABRICATION AND ERECTION

OF STRUCTURAL STEEL FOR BUILDINGS

DATED SEPTEMBER 10, 1942


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COPIES OF THIS SPECIFICATION M AY BE OBTAINED . AT ZS CENTS PERCOPY. FROM THE AMERICAN INSTITUTE OF STEEL CONSTRUCTION, IN C .

101 PARK AVENUE. NEW YORK , N . Y.

P'RINTED IN U . S. A .


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(b) With respect to any such contracts already placed by any of said Departments or Agencies or entered into prior to a dote sixty days after the is.suonce of this Directive, the Department or Agency concerned shall reviewthe contract promptly and shall chonge to said Emergency Spe6focotionsunless such change will result in any substantial delay in tho war effort.(c) The Agency undertaking or approving the construction shall obtain fromthe person in responsible chorge of the design of each such building a certificate to the effect that said specificotions have been complied with, andthat the building has been designed to secure the greatest savings of steelpractical through continuity in design and through welded fabrication. Incases where Forms PD-200 and PD-200A must be filed with the War Produc-tion Board in order to obtain authorization to begin construction of suchbuilding, such certificate shall be filed with said forms_(d) Authority to depart from the provisions of this Directive may, uponspecific request, be granted by the Director General for Operations of theWar Production Boord. or by such person or persons as he may designate forthis purpose.Issued this 10th day of September, 1942.

(Signed) Donald M. NelsonChairman, War Production Board


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RESOLUTION BYBOARD OF DIRECTORS,AMERICAN INSTITUTE OFSTEEL CONSTRUCTION, INC.

Whereas, by Directive of Donald M. Nelson, Chairman, War ProductionBoard, the National Emergency Specifications for the Design, Fabricationand Erection of Structural Steel for Bui ldings (hereto ottached) shall apply toand sholl govern the designing, fabrication and erection of structural steelfor all buildings which are constructed by, or the construction of which isfinanced by, 0 - the construction of which must be opproved by, the WarProduction Boa -d, the Army, the Navy, the Maritime Commission, the Recon-struction Finance Corporation, the Notional Housing Agency. or any otherDeportment or Agency in respect to war construction and the financing ofwar construction; andWhereas, Sec+ion 10 of the said Specifications lists the maximum unit stressesthat may be used. and said unit stresses are in general higher thon the maxi-mum unit stresses permitted by the Standard Specifications of the AmericanInstitute of Steel Construction, Inc., andWhereas, the Committee on Specifications of the Ame6can Institute of SteelConstruction, Inc., has advised the Boord of Directors of the said Institutethat, assuming discretion to be properly exercised by the Director of IndustryOperations of -he War Product ion Boord in the granting of authority to deport from the provisions of the said Specification, the Committee on Specifications "believes that buildings of a temporary or emergency character may,under the direction of engineers experienced in the art of building design, beconstructed under this Specification without risk, and that such buildings willlend themselves to long-time service if so designed that reinforcement maybe added in the future to critical elements";Now, therefore. be it resolved by the Boord of Directors of the AmericanInstitute of Steel Construction. Inc . that:The American Institute of Steel Construction, Inc .. in furtherance of the neces-sary effort to conserve structural steel for the benefit of war production,offers to the War Pnoduction Boord its facilities and services for the distribution of the Notional Emergency Specifications to architects, en9ineers, fabricators and others engaged in the design, fabrication and orection ofstructural steel lor buildings.

Resolution adopted ot New York City, June 17, Iq42For the Boord of Oirecto". A.I.S.C.

(Sod.) C. G. Co,leyPre,ident

(Sod.) V. G. Id. ,Secretory


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SPECIFICATIONPART I.PART I I.PART I I I .PART IV.PART V.PART VI.PART VII .PART VIII.APPENDIXAPPENDIXAPPENDIX

A.B.C.

CONTENTS

GENERAL-SECTIONS 1 -3MATERIAL--5ECTION 4LOADS AND STRESSES-SECTIONS 5 -9UNIT STRESSES--5ECTION 10DESIGN--5ECTIONS 11-28FABRICATION-SECTIONS 29-30ERECTION-SECTION 31INSPECTION-SECTION 32TYPES OF CONSTRUCTIONARC AND GAS WELDING SYMBOLSALLOWABLE WORKING STRESS FOR

AXIALLY LOADED COLUMNS


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NATIONAL E M ERGNC Y SPf:C I I" ICATION FOR THE D ES IGN,

welds, shall be prepared in adulIl'c of thc actual fahrication, They shan dearl} (lisi l l ~ u i s h between !ihop and field "dds, bolts and rivets,

Shop d r a \ \ i l l ~ s !thaI! be made in ('ollrormit) with the he:!!t modern practice allliwith due regard tl) "reed and economy in fabrication and erection.

(c) De6nit ion.l (or Weldin ,All t e r l 1 l ~ herein r d a t i n ~ to welds, welding and gas cutting . hall IJC comtnlNt in

accordance with the ~ t a n d a r d "Ocfinitinns of Welding Tcmns and Master Chart o(\ \'clding Processes" of the American \\'cJding Society, a!a amended to date.(d) Notation. (or Weldin .Note shall 1)(; *made on the plans and on the !>hflp d r a w i l l ~ ! i of those joint-; orgroups of joints ill which it is e!>pccially ill1lklrt


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c;:.oh I~ FABRI CATION AN D ERECTION OF STRUCTuRAL STEEL FO R BUILDINGS(e) Filler Met .1

All arc" t ' l i l l \ drOfk'S . halt cnnform to the r e c i l l i r t n l ( : n t ~ of the" A \\ .s.Specillcatl .n 101 IrOIi and !-itl-el Arc.\\t:Iding EIlnrodt ... lah:st ("(hliun Ell'ctrOlle:t!


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NATIONAL EMERGENC Y SPEC IF ICAT ION FO R THE DESI GN ,

I f not olhen\ i::ie '!'pccifietl, the increase ~ h a l l be:For s u p p o r t ~ of ele\3tors . . . . . . . . . . . . . . lW lll'rClI.tFor supports of traHlinl{ cranes (girders and columnt,). . . . . . . 25 percentFor sUPl>orts of light llIachinery, !lhaft or l11t)lordriHIl, nut k .....than . . . . . . . , . . . . . . . . . . , . .......... , . , .,',.... 10 pen:('I:lFor 3UPI)()rts of rc.:ciprocating machinery or powCfdrivcn unit-..not I l ~ s than , . . . . . . . , , .. . . . . . . . . . , . . . . . . . . . . . , . . . 50 percent

( f) Crane Runway ForcesThe lateral force on cranl' runways to provide for the l,rrl'ct of crane t rolleys sh:111.

if not otherwise specified, he 20 percent of the lifted load plus the we ight of the cranetrolley but exclusive of other parts of the crant'. applitcl at the tup of rai l, onc-il ll fon each side of rUTH,a),. ami com idercd a .. acting in lithcr direction normal to tltt,rUllway rail.

The longitudinal furce shall . if not otherwise specified, be taken as 10 per cent ofthe wheel loads (If the crane, applit.-d. at tOil of rail.

Proper provision shall be made for stre" .. caused hy wind both during erection:lI1d after cumpl


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N AT I O NAL E M ERGENCY SPECIF ICAT IO N FOR T H E D ESIGN ,

(b) End Re ltra in t\rllCll cit: i ~ I I I ' c 1 un Ihe a' MlIIlpti'lIl of eml r('straint, full ur I'artial, based Oil rlln

tinuom. or canuleHr actiol. hcallh, girder:t and tru:o.'l:', a .. \\dl a . the ~ e < . : l i o n .. of thlmember!> to which t i le) Cllnlll"Ct. shall be designt.-cl to CMr) thl' ltht:ars and moment-...u introduced, in addition tv all other forces, without t : x ~ l'lc..Iilll; at any point the unit

s t r e ! t ~ e s pre:ocribed in St.'Ction 10.

PART IV. UNIT STRESSESSECTION 10. ALLOWABLE UNIT STRESSES

..\11 parts or the "trurtllrc shall he so I)roportioll('fl th:\1 tIll' ullit !'tre ..s in p o u n c l ~lle r Mluarc inch ~ h a l l not l:xc(.tc1 the folltlwing \"alll(:', (xnpt :h prnvidl'd l'ist'wI1l'fl'in this sl"K.'cification_ Lower unit stresses than tho!.t' !.11t'(ilitd ill this ..ectiun shall nothe lI'ol'd in tlk' c;lh"ulatioll f(lr the design uf the Siructurt

( a) Structural Steel, Weld Metal, Rivets and BoltlTESSIOS

Structural SIt."d, llt"t o;("('lioo . . . . . ........ .Butt "t:ld" ..t,-t;lon I h r H t l l ~ h thrcI.11 ...... ..RiHt


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J, FABRICATION AND ERECTION OF STRUCTURAL STE:EL FO R BUILDINGS

....

...-scctional area of the hole or slot, in the plane of the faying surfatt.The effecti\c area of fillet welded plug or slot welds shall be computed as above

sptCified for filh:t welds, using for the effective Icnl{th. the Icngth of center li nc ofthe weld throuf::h the center of the plane through the throat. Il owever. in caseof overlapping Jilleh. the effective area shall not eXc


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NATIONAL EMERGENCY SPECIFICATION FOR THE DESIGN,

The..' efftc:u\ t kngth ul a ] Iutt wdd ...hall ht, tht \\ idth (Ii the part joined, whenthe ends of the weld are macl" with c x t c n ~ i n l l bars as spccitil"d in Section 29(:) . A

t r a n ~ H r s e kc\\ l'"(l hutt wdel shall not he assumed in computations to hc,' 11);'I,-:er thanthe width of tht joint or pien perl'c':ndicular to thc..' dire.:ctinn of s t r c ~ s .

The e/Tl'Cti\'C throat thickne


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,;j FABRICATION AND ERECTION Of" STRUCTlIRAL STEEL FO R BUI L DIN GS, JJ

1/16 of their llfOjcctioll when ...uhjeclt."(1 only tu ItI1'>l{.)1I. I ilk\eltion .. ,

(c) Underatresaed Compression MembersI n the cu!>(: of m e m l ) ( ' r ~ or parts in COl1lp[l'ssion, if the maximum unit stre", , ..

less than that allowable ulldcr this spccilicatioll, tht.' dCllu1l1inatur . of the frall i'lI1sspccitied in Section 14(a) and (b) may he l1luitiplitd by tin- f;Ktor , ill \\hil'hf, = the allowal)I(' unit ~ t r e ~ s and f = the actuallinit .tTt.'s, in tht., munlter,SECTION 15. GROSS AND NET SECTIONS

(a ) Definition.Tht., gro .s ~ ( ' \ " I i o n f a nU:lllher at any P"Ull ..hall I.e dl'krmint'll ' u 1 1 1 m i n ~ tin'

prndllct . of the l b i d ' I 1 l ~ " and the gro . , wi or slnt weld . the \H'ld lIll'tal ..hall n(ltbe con .idl n.'ci a addin..: tn the nl"! area.

(c) Single An i les in TensionSt.'ctiol1' ..hall ~ made s ~ l 1 l l 1 l e t r i c a l wherc\'cr practirahlt.\ The t.'ffl'niH an'a of~ i n g l e all/.:lc, in t(",inn ..hall he a ....umcd a" the net art.'a nf thl' n Illll'l'tt.'d I t . ~ phh Sf)

pc.'rcent (If thl' ana flf the uncClIlIl('('ted leJ:!:. S i n ~ h ' anglt, cnnnl'('tl'd ;Ul1.dt'" shallIx. l'Cln .. idert.."t1 a .. t'olllll'ctl'd by Oll{' I c ~ , S i n ~ l ( ' ang,le", Cllllllt'l"ler\ ll1l.: ;U1I.::il"'Io shall lintIx- lbl'" III ,hll't! toll ..truc"tic,ll.

(d) Net W;dthIn th(' ca,,{' nf chain of hllll" extending. no ... a part in any d i a ~ o n i l l or Zi"Z;l!."!

line. thl' Iwt width IIf tht' part .. hall he nbtaint:d by r l e c l l l c t i l l ~ f!'"om the ~ r u .. \\ idththe !>um (Ii the rliamC-llT' oi all til


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NATIONAL EM ERGENCY S PEC IF ICATION FO il THE D ES IGN.

The critical net section of the part uhtaincd from that ("hain \\hieh R i \ C ~ th('least net width.

(e) AnI le.Fur an/oth:,. the gross width shall be the f!UIlI of the widths nf the legs less tilt't h i c k n c ~ s . The gage for holes in opposite legs hhall be the ~ U I 1 1 of the gages from balk

{If anglc lelis the thickness.( f ) Splice MembersFor splice mellll)(.n, the thickness c O I I ~ i d e r e d ~ h < l l l he only that l)art of the thirkness of the memher which has been deHloped by r iHh beyond the scctiun considclcd.(a) Size of HolesIn computing net area the diam


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".. ..J FABRICATION AN D EMCTION Opr STRUCTURAL STEEL FOR BUILDINGS, '

f-'lcxiMc bum COnlll"1:tiollS ( cc T\ "E 2, \ppcndix A) ~ h a l l permit the ends of thelx'3m to rutale ulhcltJltly to accommodate it!:. dellt.:ction by providing (1.( a horiwlllalJi ."Jat.:t.llu.:llt l.if the toll 11.lnge octcrminccJ ,b folio,,:.

1":::.()()C)d i the he.un de:.igllcd for full uniform I"ad and for d t : l l ~ ' C l i C J I 1 nO Icx:tdiI18 JIJhOth uf the span,r X Lor, e - a i2.j 000 if the beam is designed for full uniform load producing tl1l'unit IItrcss r at mid span j

where e = th(" horiwiltal di'lplacernf!'nt hetween the top and bottom of the beam11.1 its end, in inches,

f = he flexural unit stress in the be:tm 3t mid span, p.i,i.,d = the depth of the btalll, in inches,T. - the pan of the beam, in feet.

(d) Re a.trained Member.\\'hen b e a m ~ . gmkrs or tr u . are subject both to reaction !!hear and end moment,

,Iue to the re:olrll.int sptdliecJ in Scction 9(b), their connectiuns shall be sl't:cially de:.i!o;"llC.'d to carry hoth !


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NATIONAL EMERGENCY SPEC IFICATION FOR THE DEsiGN .

(orl'g 111& juin15 ~ h a l l Ill' prol'(ntllmell tll rc!'list an) \(:II"ion tilat \\I)uld be d e \ " ( ' l o ~ dh) I)('('ilil"fl wind fHrCt aL"ting in l'onjunctic,n with i5 pern:nt ui thl" calculated dcad-load strl ... dntl no I iH IOJd. i i till", wnditic..on \\ill product.' more tcn!,!lo)n than wilh(uJl fllad loat! and \i\C I"ad applied.

(b) Combination. or We.ld.If two or more of thl' j.:elll"ral tlpe'i of weld (hllll, fi lkt. pluj:t", .. lot i are combi ned

in a ...ing:k joint. the dfl'CtiH capacity (If each ...hall hl' ..lp,lrall'll computed withrdl 'a'II l"t" h) till' axi!. ot the group, in l!rder to detenuilw the.' allowable capac ity of !hI:cOlllllinat ion.

(i) Rivett and Boltt in Combination with Weld.In lIew weided l'{Ifl!'ltruction rivet.. or bolt!'> in clllnhination with welds shall not

he cOIl!.ilil'red a .... -wr ing the ..Ire ..... . and welds shall lx' pro\ifled to carry the enti:'l'strbs for which the connection is dc...iKnl-d.

In making alterat ion!> to ...truClUrcs. l"xi ..ting r iHh may be utilizc.-d for carrying.. r l " ' - l ~ n : ~ u l t n g from ('x i-ling d ~ a d loads. and welding ..hall ~ prov ided to carryall ;Hlclitional s t r e ! ' ~SECTION 18. WELDS


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FABRICATION AND ERECTION OF STRUCTURAL STE:EL FOR BUI LD IN GS

llt"l-ti"11 ...hall 1M.' udl that tl'M.: ,trC"'l-" in the adjaccnt ba ..c material dn not exceed the.',aim::'> allo\\et1 ill ~ e c t i o l l lO(a,_The maximum nominal '!Oiu o{ f\Uet weld ilpplie:d to a nominatty quart e:dgc o{

a plate or SC(Ii('n !ohall he I 16 ind l h: .., than the nominal tluck ....." (,f edge. andthe nominal ! l i l t of hlltt w\:ld u"l'd along the toe of an angle or the rounded edge ofa ilangc :-.halll1ut exteed thn:efourths the nominal thickness tl f the : l n ~ l e h"'g or th reefourths the !lominal e(ble thj


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NATIONAL EM ERGENCY SPECIFICATION FOR THE DES IG N ,

or ia) Ill": !s than thc width uf the COnlponent part joined,

(c) Lap JointtThe minimum width of laps. on bp joints, sha ll he r lH' times the thickness (I f

the thinner part joined and nOt less than I inch. Lap joints joining plates or ban;!-ollhj(;ct('(\ to axial str(;ss shall be Jillet-welded aionR' the t where deAectiun of the lapJ)(.'(\ parb is sufliril.:ntly n.-strained to "rncnt o p e n i n ~(If the joint under maximum loading.

(d) Plul' and Slot Weld.Th e clear distance from t."tlge of a !


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C )o" ' - ' FABRIC ATION AND ERECTION OF STRUCTURAL STE:I[L FOR BUILDING SI.D~ plied the k n ~ t h in htaring; c:xcept, that fur C O l m t e r ~ u n k rivets, half the depth ofthe c o u n u : r ~ l I 1 k ~ h a l l 1Jt' deducted,

Cc) Double and Sin.le Shear Bearin.Only that portiun of a ri\'ct or bolt ~ h a l l be con .. illcrnl in d n u h l l ' ~ I l l " a r i'Carin!.!,\\hi 'h lies betWl'Cll t \ \O portion3 which arc !)tn: .. ~ ( . " " in Ihl OPIlfll)itc dirc\,:tion, Therem.ainder tlf ,hc riH,t or I "I t 311all be cOI1:.idcn.:d in ..ingh.:-l)lwar bearing,Cd) Lonl' Crip.Hi,Ch carrying calculated stress, i l l ld whose grill exceeds live diameters, ~ h a l l

ha\e their numher im:n:a ..cd I percent for each additillliitl I It I inch il l the rivet gnp,Spccial G.lrl! ~ h ' l l l be tbcd in heating and dri\'ing ~ l I c h rivcb,Ce) U.e of Rivet., Turned Bolt., and Unfini.hed Bolt.Field conllcctions may be made with u l l l i n i ~ h e d bolh, except as follows:Column "'Illices in all tier structures 200 feet or mure in h e i ~ h t .(oluum sl)lices in tier structures 100 tt) 200 tn t in hlight, it' the least horizontal

dinu.:n .. iolt is than 40 percent ui the height.Column plkcs in tier structure:. le!)s than 100 feel in bdght, if the least hOriwntaldimcn . iOll is 1e:'5 than 25 pc:rccnt of the height.Connections of all )M,:ams and girders to columns, and (1 any other heam . ,melgirdef5 on \\ hich the bracing of columns i3 llcpcndcnt, in structure:, u\1:r 125 feet il lhcight.

R o o f - t r u ~ s ! i p l i c e ~ and connections of trus


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NATIONAL EMERGENCY SPECIFICATION FOR TH E D ESIGN,

(b) Maximum Pi.lch Compression MembersThe maximum pitch in the line oi !:)trl.::-!:) of compres!


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I ).F A E"ICATION AND E f'tECT ION 0 ,. STRUCTURAL STEEL ! 'Oft BUILDINGS

~ ------------rnl)tlrtionL-d. by the mument of inertia of the.' R r o ~ s ~ c : ( t i C l I I . >';0 ck-d.uction.. hall IN." malle fur ~ t a n d a r d .. IKlp or 11eld r i n ~ t hole:o. III either IlanRt:; exn'pt that inspC'cili ca!te . where.' tilt" reduction of thc area of either HallJ.::c hy !'!lIch ri\et holes,l'akulatt-cI III ,Icrorclalll"e \\ ith lhl' Ilrovi .. iolh uf St.'ctiol1 15. tX(.'Ll'c!:o. 1f) per (l'm pf thei:fll:o. t l a l 1 ~ c ana, the t:xn: sha l l h(.' (il'Clllfte.'CI. J i :o.lIlh nU':lIlht:r . contain othtr holes,a . fer holt:o.. pam, c n u n t l ' r ~ u n k rivets. or plug or slot welds. the fu ll deduction fo r~ u ( ' h hole." ,1:1.11 he made, TIll' dcductiot1'. tim .. al'llill"ahh' to eilht:r 1l.11t).!(.' ..halt bemadl' ab o fur till' oJlpo ite tI=-nJ.!'(" if the ( ' o r r ( ' , p o l I < l i n ~ h"le- an" tlwr(' pl"(. .. (.n1.

( b ) WebI'latl' ~ i r " ! r ,,('h "hall 1-;\\(":. t h i < " k n C ' ~ of not k- than 1fliO fir Ihe l I n ~ U l ' l p o r H ' . 1

d i ~ t . a . I 1 t ' 1 11'1\,. 'n tlanf.:CS,(c) f1aDlu

F1C-h Ibnl of 'Hided platt: g i r d c r ~ ~ h a l l ill geller!. The minimumIhil' ...IH::o.. (If Ilange 111311::0. ...hall conform to the r('{luirl'l1lC:m of Sl'ctiflll 14(a)

Cover plal(,,, nf rh tlc'cI pl ... t( ' ~ i r c l ( ' r s . when r("tin th(' t1:tngt: to the weh ..hall h


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N ATI ONAL EM ERGEHCY SPEC IFICAT ION FOIt T HE D ES IGN.

the provisions of Section lO(a), as\ulIling the columll seclion to l.'lIll1pri"c tilt.: p;lII" II Istiffeners and a centrally lucated ~ t r i p of ththickness at interior stiffener" or a ,trip C(llial to not mOrc than IZ t i m e ~ its lhic:kne,!'>when the stifftners arc locatt'tl at the end ul the \\'th. The column length ~ h a l l II{taken as not le!'s lhan 01 the IcnJ.':"lh uf tl1(: " t i f f e n c r ~ in computing the ratio. Jlr.Only that portivn of the stifTt:lll"r outside of Ihe fbnge-Io-\u"b welds or Ihe angletillet shall he con . idcrcd cffccti\'c in bearing. Angle hearing tifTcnch shall nut Iecrimped"

I f hIt is e(lual to or greater than iO. intermediate MifTcncrs shall be required at~ O O O . I. Ia ll points where hit cxcted .. - - - III W He Ivvh = he cleilr depth between Aang('". in inrhc .,

t = the t h i c k n e ~ s of the web, in inc he",v = he ~ r e a t e s t unit shear in the pancl. in pUlIml\ p


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( ! ).,.,U ':""I FABRICATION AND ERE:CTION OF STRUCTURAL STUL FOR BUILDINGS(h ) Late ral Forces

Til tlanRl oi 111.lIl' ~ i n l c r s ~ u l I P u r t i l l g n a n ~ ' s or othcr IIII1\ing loads sha ll ~"I'" i"l cl tu n.: i . t .my lateral forces prudul'ed by !-ouch luad .

0) Web Cripplinl of BeamsHollt.'tI I al l s shall I so p r v l J " n i ~ J l i l ' ( } that the ('(.IIlI"l '11111 "'tn- s 3t web

to.. 01 the lilh:b, resultin' from ~ ' o n c t : n t r a t l ' d load:o. IJ!)\ suppurttd hy lx. . tring tjilt'ners,hall nut t:xl"('Cd tilt' value fl f 2ot,OOt) pound 1)I.:r !'cluan.' iudl alltl\H'f.l ill Sl'cti"n IU(a) ,fhe gll\I:rl l in' funllula'i hall he.

whel(,

\, . . I I I t'Of IIIterlOr 0:1( _ not o\,('r 2 1000t (N + 2k)" ~ I t.or l ' lIu n : : l c l l ( ) l 1 ~ --- -- - not ( )Wf I onot (N + 1)J{ = ('ol1("('utr


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NATIONAL EME RGE NCY SPEC IFICATION FOR TH E D ES IGN,- - - - - - - - - - - - - - - - - - - - -onc-tihieth uf the di"t:IOCC hctwt.'Cn the lint!> of wehls ur ri\l 'b c( n m : c t i n ~ thtm 'totil>: segmcnh of the Int:mber. and the welding or riveting !-hall be not le:-s than thatprc"cribcd in (a) alx)\(:SECTION 25. LACING

(a) Spaci0lLacing liar . uf COl1lllrle;


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=I "--J F A BR IC AT IO N AND ERECTION 01"" STRUCTURA L STEEL '""OR B U ILDIN GS

iuvuh l' " thl.: I.:r\."\:III111 01 an) lIll'mhl'r under a straining force. thi . 31mll hl' nuted onthe efl'ttion diagram

(0 In itia l St re . .T h ~ tutal illitial ~ t r e .. s in any adjustable memher ...hall Ix a'isumed as not lessthan 5,000 f X l U l l d ~ .SECTION 27. COLUMN BASES

(.) Lo .d.Pro1)c.:r p r u \ ' i ~ i l ) n shall 1>(; made to t r a n ~ r e r the ('olumn load, and moments, if

any, .0 tilt: iOlJling . and foundatiun .( b) AIi,nmentCulumn 11.-..,,(''' ..hall he .. (' 1 1('\"('1 and t i l cnrrect dC\"3tioll with full bearing on the

ma.! I l r ~(c ) F inilhin,l ,Iumn I ... ~ h a l l l>e fmhhed to accurd with the following rl'Quirements:

Rl..llt'd . ted hearing plate", .2 inches or 1 ~ 5 in thicknes!', may ht used"ithout 1,laninJ,t, pro\'idcd a s a t i ~ f a c t o r y col1tatt bearing i:o. (lbtailll:d; rolledsth:1 l)(.'aring 1 ' l a t e ~ , o\er 2 inch(:!ot, but 4 lIll"hes or Ie . in thickne s, mayht." ~ t r a i g h h : l 1 e d hy p r e ~ ~ i n J , t ; or, if prc:o."cs are "not available, by Illaning onall bearing !oturfatt;!ot, to obtain a sati ..factory contact hearing; rulled s t ~ 1II(. aring plate ., OHr 4 inchl'" in t h i c k l 1 l : " ~ , shall he planed un all hearingsurfaces (except as nuted uuder 3l.

2. Column ha."es othuriaCl.:3 (except a!l noted under J L

J. The hottom !iurface . of llearing plates and column ha .e5 which rest onma-.onry fuunclation!> and are grouted to iU'llre full bearing COll\:1c t neednllt h(' plam"ti.

SECTION 28. ANCHOR BOLTS\11('hor b o 1 t ~ ..haJl he de . igned to provioe rl'si"tancc to all conditiOl15 of tension

.!III! .. hear at the bases of c o l u m n ~ , including the tCIl . ilc comroncnts of any hendingIIIC!mt:nt \\ hich may result from tixation llr partial fixation of column.

PART VI. FABRICATIONSECTION 29. WORKMANSHIP

( . ) General\11 wurkman .hip shall be l"qual to best practice in modem structural shops.( b) Straichte nina:\lIl1ldtc:riai !ioh,l1ll)(' clean and straight. I f l>traiRht('ning or Aauening i. necessary,

it ~ h a l l be clune by a Ilrucess and in a manner that \\ ill 1:01 injure the mat('rial, Sharpk,nks or bends shall be cause for rejection.

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NATIONAL EMERGENCY SPLCIFICAT ION FOR THE DES IG N ,

(


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ceo, ,\ 0> FABRICATION AND ERECTION OF STRUCTURAL STEEL FO R BUILDINGS

" luLting parts to be hUlt welded shall lx: carefully alig:ncd. i ..alil:lllllellts greaterthan !i inch shall he c"rrectl-d and. in making the correction, the parts sha ll not bedrawn imu a s' arpcr sIOI)( than two d e ~ r t c s n l0 inch in 1.2 inches),

The work ~ h a l 1 be po. i t i o n ~ for fiat welding whene\"er practicable.h a!


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NATIONAL EMERGENC Y SPECIFI CATION FOR THE OES I G N ,

bars are remo\-ed upon completion of the welel, the rnds of the weld shall be lefl"'11')()th and tlu .h \\ Ilh the edge:-. of the abutting parts,

( k) Riyetin..\11 r int ! are tu be power..pherical shape and of uniform size throughout the work for tl tsallie size rh-et, full, neatly fini!


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FABRICAT ION A"'O ERECTION 01'1' STRUCTURAL STEEL , .OR BuiLDINGS

SEC TI ON 30. SHOP PAINTING(.) Shop Coat

.\ftcr in 11''('t. In .Inc! approval and hefore lea\'ing the ...hllp, all steel \"'ork "ha ll bethoroughly ckant-d, hy effecti\(' meam. of all 1 0 0 ~ e mill ,,('ale, r u ~ t . spatter, ... ~ ortlux del'0 . ;t, oil. dirt and otlll'r f o r e i ~ n matter. Except where (;Ilca!;c!l in concretc,"nd exn:llting ("(IKes to.> be tield welded. all steel work IIha11 he gi\en ( l i l t coat of appro\'etl metal protet:tion. applied thoruuJ:!;hiy and t : \ " ( ~ n :'IIld well worked into ti:ejoinh and other open "'pact''' \I I paint shall be applied to dry lIurf;ICc.:

(b) lnacceuible PartsPartll in;l.('C("o;o;ihle aft('r a!N'mhly !!;hall he g i\'en t wo cOat!!; of shop p:l int. prefer

ably uf difJennt colurs,(c ) Contact SurfacesCnntact lIurface . o;hall he c1eane('t'n properly alignedf3!]


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NATIONAL EMERGENCY SPECIFICATION FOR THE DESIGN .

(e) Field Weldin,All rleld as!'Icmhly and welding shall be executed in acconlance \\ ith the require-

ments ("If Section 29 excepting uch as manifc'itly apply to . hop conriitiom onlyAny shop paint on surfaces adjacent to joints to be lield welded shall be thorough ly remO\'cd to expose clean stetl for a dbt3nce or at least 2 inches on either !.ideof the joint.

(I) Riveti,. .Rivets dri\el1 in the field shall be heated and driven with the same care a., t h o ~ e

driven in the !'!hop.(a) Turned Boltt110le5 for turnl'(l bllits to be inserted in the licld shall he reamed in the field as

specified in Section 29Ce).(h) Field PainlinaAll field \\dd!\ and lield rivets and holt!'l, abo all ~ e r i o u ~ ahra . ioll!\ to the h('lfl

coat, c;hall be spot painted with the material U'il-d for the hop cuat, or an cqui\'alent.and all mud and other firmly altachCfl and ohjectiunable furt'it;1l materials shall Ixremoved, hcfore general field painting.

Re!\ponsihility for thi!. touchup and a n i n ~ . as well as for general field paintinJ!.shall be allocated in accofllancc \\ ith acceptl.-d local practices and this allf)cation ~ h a l lbe set forth explicitly in the contract.

PART VI I I. INSPECTIONSECTION 32. INSPECTION

(a) General"aterial and w o r k l l l a n ~ h i J l at all time, Iohall he subjcct to the inspection {If ex

l>crienCl-d e n ~ i l 1 e t ' r ! ' l fCllre .enting the purchaser(b) CooperalionAll in'ipcctioll a . far as J l O ~ , i h l c !\hall hcctor, pcnmttinj! arn''''for im'l)tttion to all a c e ~ where work i!-> heing done,

(e) Rejection.lMaterial or workmanc;hip not conforming to the p r O \ ' I ' i l o n ~ of thi .. !lpccific"atif'll

may he: rejtcd at any time defect.. are f"und during the f l r o ~ r ( ' c ; s of thl' work,(d) In.peetion or Weldin rThl' in"p('{'tinll of welding !'hall be 1'('dorml'i1 ill a('rnril;lIl('l' with the pro\ i . innsfir S(,ftion 5 of thl' I\nwriran \\'l'Iding Socict) Code for ,\rc and (jao; Welding II I

l l l i l c t i n ~ Construrtion,[32]


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F A BRICATION AND ERECTION OF ST RU CTURAL STE'-L FO R B U ILDI NGS

APPENDIX ATYPES OF CONSTRUCTION

Three basic t)'l)(::-. of de:o.ign and dl' . ign : .... umptiulJ are permissible, under thercspc::ctl\,c cunditions statui hereinafter, and each will govern in a sl)tCilic manner thesius 01 I11COIOtrs and the types and strength of their conl1t.'Ctiolls.

TYPF: 1. hereinafter dl''ii't"nated as " r i g i d ~ f r a m e " (continuous, restra ined frame),a."SUllll:S that the tlld f.:!lIlIlt:ctiuJiS of beam . , or girders and all other mcmher!! in frameha1"c ~ u l l i c i l ' n l rigidity tll huld ,irtually unchanged the uriginal allgles Ix:tweell suchmemuers and thl.: fIll:IIIUCrS to which they connect.

TYPF: 2, hcrcinafh:r d e ~ i g n a t c d as "coll\"l'ntional" or "simpl e" framing ( unre strained, fn:e-clllicu I. assumcs that the ends of ocams and girt..lers arc CUllnected forsh:ar only, IIlU are free to rotate under load.

Tn'E 3, hen.:inafter d e s i ~ n a t l ' ( l as "semi-rigid framing" (partially restrained), as"Ullles that the cur,lIt:l:ti, :I1S of ~ " a l 1 l s anu girders I K . l S ! . C ~ 5 a dCI)Clluahlt: and knowlIrn'JIlll:nt caparit)' illtt"fIllC'tliate ill dt:g:rce between the cOlllplete rhduity of TVl'E 1 andtit.: C0Il11)lt.'tc" flexibility of Tn' 2.

All wL'ldl'cI ("nnl1(.'t. tiOIl!'ii shall be cOllsi"itetlt in their de"ii't"n with the assumptionsto t)"lM! (.f colbtructioll. as callt.'d for on the U e ~ i ~ J l dra\\ illgs,

TYI'E 1 con . tructinn unconditionally rcnnitted llncl('r this sp('(""iricalion, It is an 'Ceo;;sary c,ndill"n uf this t) pe that lhe calculah.'d streS:.es and resulting strains in a llIlIl'mhc:rs ;11111 till-ir (""onlll'ctiulls llCcur withilJ tile..' tla ..tic range, and that tht: stres5CSUO nut exu.:ld those allowcd in Scction 10 of this spccilication,

THE 2 con'\tru('tion is permitted under this "f"K'cili("3.tion, subject to the !'iitipulaI t ' ' l 1 of the fullowing paragraph when'n' r applicahle, Bcal1l-to-c.:ululIlli cUllllcctions",ith S l ' a t ~ for thl" reactioll!'ii and with to clip angles for latl'ral support only. a re(lassell U1u.ier THE Z.

Tn tkr huilrling", cl('signcd in general as TYPE 2 conc;truction, in that the beam- toeohllllll c '1lI1l'rl1l1l1S olhl"r than wind cllllncl.""tiolh ;:Ire Ikxihle, the distribution of the>\"in,1 m, , I l k lit". ~ l ' ; ),etwl'CIl the several joints of the frallle, may he made lJy a recognized emt.irical method provided that either:

1. T he win,1 ('nnnections, desitmed to rcsio;t the illlllumerl wincl momen ts , a re adeQuate h. r l ' , i ~ t till' tI l l l l lK:nls inciul""cu hy the ~ r a , " i t y Illadin,!! ami the wind loadin,!!", atthe incre;lscd unit strcsses permitted therefor, or

2. TJ-K. wind conn{'("tiron


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NATIONAL EMERGENCY SPECIFICATION FO R THE DESIGN.

APPENDIX BARC AND GAS WELDING SYMBOLS

I ARC AND GAS W ELDI NG SYMBOLSI. TYPE OF WELD FlELD WELDI EAD GROOVE PLUO ALL n..U.HF1LLET OT WELD AROUND.QUARE V BEVEL U Jr--. b. I V V V IJ \J 0 --LOCATION OF WELDSARROW (OR NEAR) I OTHER (OR FAR) I BOTH SIDES OFSIDE OF JOINT SIDE OF JOINT JOINT

" ' r ~ , ; : L ~ m NOTEi ~ ~ N ~ L U D E D AHGL. t ;7 Size; 'IZt:.J IN C:RU.Ilt:NT ' w aD AUqO SIZ.IE: 4 0 < .l.NGT H AROUND~ ~ l : l ~ 1 ~ ~ . : ) V t ~ " 5 / ~ROOT! .1 O , , ~ ~ P>T


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Documents

AISC 1942 WAR Specification.pdf