US1986172A - Steel and concrete construction - Google Patents

Description

Jan. 1, 1935. w. A. WILSON 1,986,172

STEEL AND CONCRETE CONSTRUCTION Filed July 28, 1933 6 Sheets-Sheet l Jan. 1, W A w soN STEEL AND CONCRETE CONSTRUCTION Filed July 28, 19:53 6 Sheets-Sheet 2 i0 20 M5 f 33' 55 11/90 I I n 1 7/ 7 i1 5/ i1 i5 i6 6 g] i .flf/

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STEEL AND CONCRETE CONSTRUCTION Filed July 28. 1933 6 Sheets-Sheet 3 Jan. 1, 1935. w A wlLsoN 1,986,172

STEEL AND CONCRETE CONSTRUCTION Filed July 28, 1933 6 Sheets-Sheet 4 W WEI! '5 I, W", 2 If Jan. 1, 1935 w. A. WILSON 1,986,172

STEEL AND CONCRETE CONSTRUCTION Filed July 28, 1933 6 Sheets-Sheet 5 Qwuam/MF i J5 56 W 67 075 F r J [j /x2227? M5070. v

Jan. 1, 1935. w. A. WILSON 1,986,172

STEEL AND CONCRETE CONSTRUCTION Filed July 28, 1933- 6 Sheets-Sheet 5 V ZJ W s 5 31. I r

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-EA k I I 9 E Patented Jan. 1, 1935 1,986,172v t STEEL AND CONCRETE; CONSTRUCTION William A. fwilson Canonsburg, Pat, assignor of fthree-fourths'to Frederick R. Wilson and onefourth to Eln'ier Leach, bothof Canonsburg, Pa.

Application July as, 1933. Serial l\lo. 682,684 C a fig omens; (o ve-71) My invention relates to reinforced concrete construction andmore especially to the reinforce-3 ment or steel 'work usable in floor construction,

the'present invention contemplating certain material changes or improvementsonwhat is shown anddesc'ribed in my P ior application for "patent filed June 16, 1931,Seria l No..5i4,863; I M

j The'pri'n'cipal object of this invention jisto provide steel reinforcing members for con'crete construction work which can bereadily and conveniently set intplace to present an interlocking framework'in the form of a grid made upv of longitudinaland transverse trusses of diiierent' sizes in fcrosfs, section, with; the smaller trusses".

passing through the larger trusses andf ada pted to be spaced apart according to requirements relative to'stress or load to be supported.

' A further object of my 'invention is to providev a V reinforcement for. heaVy duty concrete floors comprising a steel flframeworkor grid; of truss through truss construction which isadapted to be'einployed in connection with a sheetlmetal basein'the form of plates which are'in some instances temporarily connected to the beams so as to be removable from the reinforced concretefioor and in other instances locked or firmly? secured to the floor beamsby a keeper rail welded thereonand upon which the truss through truss H grid rests t'o be embedded inthe concrete and form part ofthe floor structure...

I Withthese principal objects inview invention contemplates a particular arrangement of truss, members having spacedfapart longitudi nal bars with separatedwebs whereby in the for 'mation 'of the main or longitudinal trussesspaces are provided between the webs and bars for the,

passage of the transverse trusses of smaller size in.parallelseriesbeing connected and braced together by'imetal clips engaging-the lower longi I tudinal bars thereof, thus providing a-' grid-like steel structure for reinforcing a concrete floor either with or without a permanentsheet metal j base, all ashereinafter described and specifically set forth in thdappendd claims.

In the drawings:-

Figure 1 is a plan view of a steelf'reinforcey ment for concrete floors 7 constructed in accordance with my invention.

Fig. 2 is ajplan view enlargedofl a fragment of the reinforcement. I Figs. S and 4 are detaii views illustratingthe i members.

Figs. 5and'6 are: sectional views onjthe lines v V spaced apart lower bars 21, 21 conne'c'tdiby Websv tion of the truss members.

Fig. 8 is'a' sectional View on the linetftbt Fig. is a: side elevation illustrating themanf ner ofsupporting the steel reinforcement when Fig.1 leis ,a similar view illustrating the ,er'n'p loy= ment oi a sheet metal'hase.

Fig, 11 is a View showing the (manner bf liesfing; he tru mb s for transportation;

forming theba'seof the floor' construction.

Fig. 121s a planview of the sheet metal plates Fig. l3 is' a sectional View through the plates on the line 13 l3 of Fig. 12. v v

Fig. 14is a view of the plate. retainingrail; o Fig. 15 is a sectional view thereof:

manner of connecting the 'base'plates to the floor in ,Q fierent forms of trusses that may be em p b d n. on n a -il i re nf r ement of. truss through truss iormation'.

' Figs, 2 and 4; SIlOW "modifications tr t e clip for connecting the maintrusses',

.Fig.i2 5 jis a Ian view of'a flat-truss reinforce-u Fig.25agis an enlarged sectional view thereofon the line 25a-25 a"of Fig." 25.

Fig, 26 is a .planviewjof a removable or 'tjein i pcrary plate floor. v

f Fig.2? a sectional viewillustrating the means" for supporting the removable corrugated plates on which'the concreteis poured; j) j Figs. 28and 29 are modifications thereofli l Fig; 30 is a modification of the 'means for sup-r 3 Figs; 31'to 34 illustrate further modi ficat nsoi I I, t a thetemporary plate floor construction, ',and V in cross section, the longitudinal truss members,

portingthe floor platecon'struction'.

, Fig. ,35'islan elevation showing a modfication: of E;

In the'construction of. the trussthroughxtrus's Q the spaein g means in the form of a spajcingbar f gridrlike form of reinforcement the longitudinal and'tr'ansverse frame members or unitsmay be similarinconstruction; each consisting of three main" bars while in, other instances they extend longitudinally, as shown infthe drawings; and this reinforcement for the concrete flooring is usablev inconnection withtemporaryor removable forms, l asprovided for in Figs. 26 to 34l ir'iclusive', or permetal clip for-connecting the longitudinal t manent base platesas shown in' 'Fig. 10.

are each, made up of .a' main. upper bar; 20 and Fig. '16 isa sectional view enlarged showin fi he' "PAT N 22;,th'e {centrods forrning' 'thev webs extending d 7 them to receive the transverse trusses. The transverse trusses are similar in construction to the longitudinal trusses, that is to say comprise an upper main}bar'23 connected to the spaced apart lower bars 24, 24 by webs 25, and for the purpose of constructing the grid-like concrete reinforcement the trusses of one series, as the transverse trusses, are smaller in cross section than those of the other series so they can be slid through the same between the webs to rest on the lower bars. The transverse trusses may be located in alternate spaces or wherever required according to disposition of the stress to which the floor will be subjected; in other words, at certain portions of the grid forming the steel reinforcement the transverse'trusses may be located closer together thanat other portions thereof.

The formation of the trusses or reinforcement unitspermitthem to be shipped nested, as-shown in Fig. 11, and in constructing the grid the lon-. gitudinal trusses are connected together inparallel series b'y'means'of. metal clips 26 engaging the contiguous lower bars 21, 21, the purpose of the clips serving more especially to bind the q trusses togetherrather than increase the strength the bars andclampthem closely together, the bent end portion 26a being in the arc of a circlecorresponding with that .of .the circumferenceof the bar,,whi1e the arc of lthebent end portion 26b is slightly less than that of the circumference of the companion bar so that the last' mentioned end portion will be sprung over the barby the tap of.

a hammer. The clips remain in place to be em--' bedded in the concrete and although they are permanently attachedand consequently seldom required to'berem'oved the bent endportion 26b terminates in an outwardly projecting loop 260 that may be gripped by pliers should it be desired to remove the clip.

It will be apparent that by the use of different size truss members of the construction hereinbefore described the work .of forming anet work of steel reinforcement for all kinds of floors can be accomplished expeditiously for the reasonthat it is necessaryonly to set the longitudinaltrusses and after looking them by means of the clipspass the transverse trusses through thespacesintermediate the. webs, and in joining a series of transverse trusses with another series they are lapped as shown in Fig. 2-the ends of one series being l1 respects my invention provides a wide latitude or variety in construction. I

It is essential that thewebs of the larger truss members 'shouldbearranged so as to provide the required spaces for the passage. of the smaller truss members, but instead of having the webs or rods extend directly from the upper to the lower bars, as hereinbefore described; theymay, be disposed as illustrated in the modification Figs. '7, 8, 10V and-l6, which the webs extenddiagonallyat opposite sides of the truss between the upper bar 27 and lower bars 28, 28 and on a line therewith. In this instance also the rods forming the webs 29 are bent V -shape with the ends extended to bear on the lower bars to which they are welded. This form of truss possesses advantages over the other form and consequently the smaller truss members are similarly constructed, the upper and lower bars 30 and 31, 31 being connected by diagonal webs 32, and of course the angle of the bent rods forming the webs 29 of the larger trusses is such as to provide spaces to receive the smaller trusses. In this instance also thelower bars 28, 28 are connected by clips 26 in constructing the grid-like reinforcement. In either instance, however, this type of deck or floor reinforcement isvery cheap for the reason that the truss members or units can be shipped economically and when assembled provides'a mat ofmaximum strength consistent with the weight of steel employed. .Furthermore as the. truss members or units are easily handled in producing the net workwith the longitudinal bars of the trusses crossing each other the assembly canbe accomplished with greater. facility. by eliminating the expensive work of tying or welding loose members, itbeing necessary only to lay the larger truss members so as to be supported at their ends on the floor beams and pass the smaller trusses through them, and it'will be ob vio'us that in the completed structure the load carried by the top bars of the main trusses is transmitted through the webs to the bottom bars of said .trusses and the load carried by the top bars of the smaller trusses carried likewise through the bottom bars thereof to the main trusses upon which they rest.

Although different forms of .bar constructionmay be used in providing the truss through truss construction those illustrated in Figs. 17 to 22 possess peculiar advantages 'in a structure of this kind. In Fig. 17 the smaller or transverse.

trusses which extend through the webs 37 of'the spaced apart bars of themain trusses 38 are formed of four longitudinal bars designated by.

the numeral 39 connected by a transverse web 40, the longitudinal bars being arranged in upper and lower spaced apart pairs with the lowerpair.

spaced at a greater distance apart than the upper pair and having the web 40 extending between the upper pair of bars beneath the same and from the said bars to the lower pair respectively, .while in Figs. 18 and 19 four longitudinal bars 41 are also employed but in this form the.

upper and lower pairs of bars are close together with the bent rod or web 42 welded between said bars, The truss shown in Fig. 20 is a modification of the truss shown in Fig. 17, the four longitudinal bars 43 being spaced apart rectangular in cross section with the web 43a. extending across. the top of the upper pairof bars and from the.

latter downwardly to the lower bars. In each instance the webs are welded to the longitudinal bars, and it will be noted that these forms of smaller truss members are adapted for use in connection with main trusses in which the longitudinal bars are connected by vertical webs 45.. In Figs. 21 and 22 I have shown a form in which the web .46 extends from one of thelower longitudinal bars 47 diagonally to the upper, lon-.

' plates 35 are arranged with the corrugationsex tending transversely with respect to the floor oson-72 fIn'sQme instances itisdesirable tos'spacea the longitudinal: .trusses apartto aamore: OF'IBSS" ex.- tent and in Figs; 23 andriZdvI have shown; modie fications; of the metal-clip hereinbefore: described; in Fig. 23 thabent endportionsefiflsgoorof the clip having the connecting portion- .51' extended' to thainsertioni of a bentor curved. piece of metal or short bent ban52qbetween the.bars 2i, 2 1, and in Fig. 24- theconneotingportionfilof the clip is longer for separating. the bars of adjoinin'g main trussesa greater "clistance-apart the clipbeing; reinforced by means. of-a rail barror section 53.2 Theimodification shown in.Fig...25- ilius' trates the-adaptation of the metaivc1ips=26,-.here'- inbefore: described, in'connectin'g flat bar trusses, each truss consisting. of spaced apart longitudinal bars 57, 57 on a horizontal plane with each other and connected: by. webs 55a in: .the form :ofv rods bent'zig-zag betweenthe companion bars 57. It. is therefore obvious that the special formof metal; ctip is; subjectflto modifications for connecting: and spacing various forms-of bar: trusses: mad

dition' to these forms which provideionthe truss through (truss construction 'hereinbefore' described,- and? instead 'O'f jOliDSi Spacing oflfthe.

trusses may be effected by an .inverted T-railfld havingspaced apart notches 7 6 to receive the bars Inthe construction of-a concrete floor-it is oftentimes desirable thatthe plate floor or forms corresponding with the width of the upper end of the I-beamfil on vwhi-chuthe .U-bol-t rests 'so' that the ends of said U-bolt will depend below the-,flangesof the I-beam at the outeredges thereof to receive metal strips ornarrowaplates 5, .blflwhich the metal plates 35 are supported between the floor'beams, and to also receive diago-nal braces 63 extending across the under side of said floor plates, said floor plates and braces being temporarily held in place by nuts '64, which.

when removed will permit the 'plate floor construction todrop away from the concrete leaving only, the upper portion of theU-bolts-embedded therein. It will be notedthat i-n applying this plate floor .constructionto-thattype of I-bearn which thejunder side of the top flanges are inclined inwardly, as" shown in Figs. 28. and

29, the supporting strip or narrow plates, as 65,

for supportingthe corrugated plates and braces at opposite sides of said I-beam arebeveled at their upper inner edges to correspond with said flanges, and where the U-boltis used on an end beam= one leg of the bolt (66 in Fig-. 29) is bent abruptly over the edge of the flange. Instead of using u-bolts I may employ vplairibolts '67 "as shown in Fig.;30, andfin this instance also the bolts remain in place after the removal of the plates forming. he temporary floor on which the concrete is poured. I

It, will be seen that in Fig. 26 the corrugated.

beams 61 and rest at their ends on the nar'row supporting plates 62 temporarily secured in place by the u-bolts, said corrugated'plates being an overlapping sections as illustrated in Fig. 13, and where it is desired to lay the plates with the cora 'I-c]3;j m,; j. f. .1 J- -z' aeinetal reinforcement for concrete decks andfloors comprisingtruss-members of different sizes in cross section; the-zinger trus's members consisting of. upper and lower bars -spacedf apart rugations. extending; longitudinally similar? sup porting. plates.- 6saareiemployediofi a widthfito ac commodate any variations :in'the space between the: floor beams. 61, and inithis: modification the corrugated floor plates are supported intermedi; ate the floor beams by angle bars fi9gsthe bolts-'60 extending over the lsbeamspassing. through the: supporting plates 68 and angle bars. Further-J more, where the construction ot" the floor em'- bodies a. stringer 72'extending between the floor beams I employ a supporting strip or narrdwplate "Ifibent laterally to extend iromthe floorbeam 73 tothe upper'fiange 72o between saidfiangei and a supporting plate 711 temporarily supported from the stringer-by Ug-bolts' 60.

As hereinbeforewstated the U-bolts are thefonly part of. the. removable plate floorconstruction: which remains in the concrete floor, and of course this construction of removable" floor plate is e'mployed preferably with thetr'uss throughtruss form of steel reinforcement. i The constructionland arrangement of lthe-truss member's. constituting, the grid-like steel reins said reinforcement and the supporting beams 3?v to elevate thereinforcement above .theI-beams between which the removable or'temporaryplate floor is built .to support the concrete .unti'ljitis set. Howeveninthe' construction of a heavy-duty:

deck orflooring, and wherever'itiis'desiredto. have. a metal base, amodification *of i the plate floor construction is employed-in which the cor-v rugated plates are-lockedbr fastened to'the floor.

beams .by channel bars .36 extending- 1 along the floor beams and are provided with side flanges or lips 36b under which thegends of-the. platesx'are locked in-the manner; hereinabovez described;

These channel bars are welded to the beams;

for which purpose the bot-toms are provided: with holesor slots 36a, and in building the plate-base.

forming part of the reinforced concrete flooring one of said channel bars is weldedupon agbeam. and after slipping an edge of the plate'undent he fiangeor lip at one side thereof thev other edge of said plate is placed to rest on the next fioor beam, and when a series or line of plates has been laid to extend the length of the attached channel bar another channel bar iswelded to the second floorbeam so as-to overlap the edges of the. plates; this operationbeing repeated to complete the floor area.-;In laying the plates "either. temporarily. or permanently the bulged portion: at the side of one overlaps the bulged portion-at.

Bythe particular constructional steel rein= forcementin connectionwith either form of plate floor I provide an arrangement that will greatly facilitate the construction of floors for buildings; decks, and various other structures in the nature ofa reinforced concrete slab, and as hereinbe f-ore stated the reinforcement members or uriit'sf' permit of a disposition-of the-truss throughtruss grid or mat to meet various requirements as 't'o design as ported.

well as stress of the load tobe sup- (iii) triangular in cross g'section" and. webs connected to said bars at' opposite sides "of'the truss, said bars and webs being spaced apartto receive the smaller truss membersthrough them at an angle thereto. 1 r

' 2; A.metalreinforcement for concrete decks and floors comprising longitudinal truss members having upper and lower longitudinal bars spacedapartv'and connected by webs also spaced apart from eachother leaving transverse openings-betweenthe bars-and webs, together with transverse truss members of similar construction and smaller in cross section so as to pass through the openings in the first mentioned truss members,-the smaller truss members presenting spaced apart lower bars which rest upon the lower-bars of the larger truss members to reinforce the metal" structure. I

3.'A"metal reinforcement for concrete decks and floors comprising longitudinal and lateral truss members of different si'zes,;each truss mem-- ber consisting of upper and lowerhorizontal bars spaced triangular in cross section'andwebs connecting said bars at opposite sides of the truss, the horizontal bars and websf of the larger truss members being spaced apart to receive the smaller truss'members between them to'provide a truss through'truss form of-reinforcer'nent.

' 4. A metal reinforcement forconcrete decks and floors comprisinglongitudinal and transverse e; trussmembers of different sizes, eachcons'isting of upper and lower horizontal bars'connected by webs at opposite sides of the truss, the webs of the larger truss members being in the form'of short rods bent V-shape with the ends extended to rest upon the lower bars of the truss, said upper and lower bars and webs of the longitudinal or main truss members being spaced apart to receive the smaller or lateral truss members between them.

15;A metal'reinforcement for concrete decks and floors comprising longitudinal and lateral truss members of different sizes in cross section forming a truss through truss construction, each truss member consisting of upper and lowerhorizontal bars spaced triangular in cross section with two of the bars lowermost and on a horizontal plane with each other, and webs connected to the triangularly spaced bars at opposite sides of the truss member, the'horizontal bars and webs of the larger truss members being'spaced apart to receive the smaller'truss members so that the lowermost bars of the latter will rest onthe lowermost bars of the largertruss members at right together. with metal clips; connecting the longitudinal truss memberstog'ether in parallel by engaging the contiguous lowerbars of said truss;

members. 7

'7. In combination with a plurality of truss members each comprising upper and lower bars connected by webs 'atopposite sides -'of the truss, the adjacent truss members having bars infcontacting relation, of a metal 0111321501 clamping the truss v-members together consisting :of. a stripof spring steelbent at each 'end in the arc of a circle corresponding" approximately to the circumference' of 'the contacting bars, whereby said clip is sprung overthe barsinclamping them together. 1 8: In combination with a plurality of truss members each 'comprisingeupper and lower bars connected'by webs at oppositesides of the truss, the adjacent truss members having bars in contactingrelation, of a metal clip for clamping the trussmembers'togethe'r consisting of a strip of spring steel bent ateachend in the arc of a circle corresponding approximately to the circumference-of the contacting bars, whereby said clip is sprung over'the bars in clamping them together, one end of the metal strip being turned outwardly to provide a gripping member for removing the clip;

9. A metal reinforcement for concrete decks and floors supported by floor beams, comprising channel bars welded to the beams and having laterally projecting side members or lips, plates supported. on the floor beams withthe endsof the plates-locked in place by the side members or lips of the channe1-bars, and a metal reinforcement resting on the channel bars and consisting of Iongitu'dinaland-transverse truss members of different sizeseachcorisisting of horizontal bars connected by webs at opposite sides of the truss, the horizontal bars and webs of the longitudinal or main truss members being spaced apart to receive the transverse truss members between them to form a grid-like reinforcement.

- 10. A metal reinforcement for concrete decks and floorsisupported by floor beams, comprising channel =bars having holes through the bottom thereof for welding said channel bars to the floor beams and laterally projecting side members or lips spaced from the beams, the holes through the bottom of the channel bars providing for welding them-to the beams, plates supported on the floor beams and having their ends locked in place by the side members .or'lips of the channel bars; together with ametal reinforcement resting on thechannel'bars and consisting of horizontal bars connectedby webs at opposite sides of the truss, the horizontal bars and webs'o'f the longitudinal or:mainT truss members being spaced apart to together with a metal reinforcement resting on the channel bars above the plates.

:12. In combination with a metal reinforcement 'for concrete decks and fioors comprising truss members o'f different sizes adapted to be passed one series throughthe other transversely, channel bars having laterally projecting side members or lips, and corrugated metal plates having out- Wardly'bulged portions extending the width of the. plate-at the opposite ends thereof for overlapping engagement of a'series of plates one with another and for overlapping engagement of the channelbar with'the opposite ends of the plates.

' WILLIAM A. WILSON.

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