US1988613A - Manufacture of roads, yards, aerodromes, and the like surfaces - Google Patents

Manufacture of roads, yards, aerodromes, and the like surfaces Download PDF

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Publication number
US1988613A
US1988613A US601142A US60114232A US1988613A US 1988613 A US1988613 A US 1988613A US 601142 A US601142 A US 601142A US 60114232 A US60114232 A US 60114232A US 1988613 A US1988613 A US 1988613A
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United States
Prior art keywords
plates
platings
plating
devices
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US601142A
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English (en)
Inventor
Telford John Charles
Hines John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braithwaite and Co Engineers Ltd
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Braithwaite and Co Engineers Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braithwaite and Co Engineers Ltd filed Critical Braithwaite and Co Engineers Ltd
Application granted granted Critical
Publication of US1988613A publication Critical patent/US1988613A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/006—Foundations for pavings made of prefabricated single units

Definitions

  • the present;inventiom has for its objectthe provision of a strong f ,oundation for road o r the like surface suited to modern trame conditions which can be rapidly produced by comparatively unskilledlabour and with little or no interrupftionbythevveathe'r.lxV f v
  • Thefoundation in accordancerrwith the invention comprises twofspaced layers offmetal plating havingv concrete or likecenentitious material sandwiched between themand is primarily characterized by.
  • The'shear Vmerribers may ⁇ loe-madesloping lS0 ,as to, resist theshearg forces in a Similar manner@ Athe diagonal web members of a lattice girder; also they maybe arranged to lbe inclined in ⁇ varying directions sc as to be eiectivein resistingthe forces: in these di-v rections.
  • vFor instance ⁇ in-jits simplest .formi a shear member'comprisesa strap withend flanges secured'tovthe layersfof plating andyset at such an angletothe y.Irlainpari, of thestrap that the'. latter is properly inclined.
  • Oppositelyvinclined' straps maybe used in pairs so-thatvthe .stresses from opposite directions-parer resisted by each'pair;y
  • the in-g clined straps' of each Vpairf may be combined to' form a distance ,piecebf box-like', or.frame-like form which ⁇ may be producedfrom metalstrip bentto trapezoidal shape, and disposedsc that, the
  • 1 layers of lplating maybe secured -respect-ivelytov opposite parallel sides.l
  • the ldistance pieces maintain the spacingof the. layers at a. predetermined distance, so that whilst thefconcreteis hardening, materialsmaybe .stored on the top layer.
  • pairs of sloping shear memberspare employed each in the form ofja strap bent'once galong its length to form a stirrup or arch: the feet of,-
  • the flat plates for usegin -the presentv methodl need Vhave no projections or attachments'before. reachingthe site and vaccordingly occupy the amount .of ⁇ space during. transport.
  • Figure V1A is a. plan view' o-filaV number of assembled plates connected by one formi of shear1 distance piece, three lplatesbeingfshown' in the' upper layer andi-six in'tl'ie lower layer'forvconI Figure 2 is a section on an enlargedscale along the yline y2'2 of ⁇ Figure 1. f
  • Figure ⁇ 3 is anisometric'view- 'in part brokeny away vof an ⁇ assembly vof platesv witlicurb or but-1 tress plates along one edge-thereof.'
  • f Figure 4 is a sectionthroughfan' edgepartof the foundation ⁇ showing the connection AV of the upper and lower plates'with a curb plate;
  • Figures 5 and' are section ⁇ and plan view respectively 'ofrithe kind of fsheari'distance piece employed in the arrangementillustrated in IEig- ⁇ ures 1 to 3 shown on a larger scale in position between the layers of plating and in association with a securing bolt.
  • Figure 7 is a section of a similar distance piece secured to the plating by welding.
  • Figure 8 is afplan- View 0f a number of assembled plates connected by stirrup shear members, two plates being shown in the upper layer and four in the lower layer.
  • Figures 9 and 10v are respectively an end elevation and a side elevation ⁇ ofra"stirrup "shear member in position betweenthe4v layers of plating, and, .@,i' Y 9
  • Figure 1l is a diagrammatic fviewfof'the simplest form of shear member.
  • the simple distance piece or shear member illustrated more or less diagrammatically in' Figure 11 comprises a strap a with end'flanges b and c secured to the upper and lower layers of plating respectively.
  • the flanges are set at such an angle to the main part' of the strap lthat theV latter is most efliciently inclined lfor taking up shear stresses.
  • Another identical strap d shown in chain dotted lines may 'be oppositely inclined to resist stresses inthe other'direction.
  • straps r2 and thetops of the plates may be inwardly turnedsubstantially at right angles to form a' flanger 3 for purposes of interconnectionl with the Atopl: layer ⁇ of splates.
  • the plates 6.,subsequently laid down are progressivelylocated fromthe rst row by means of spikes 7 (seeespe'cially Figure 2) ⁇ driven through registeringholes 8 near the edges of adjacent plates and into thesubs'oil.v ,
  • the holes in each ⁇ plate which" areprovided. forY thisr purpose vare preferably '1-symm'etrically arranged.A They are conveniently four :in number andare disposed at, a distanceoff one quarter fthe; length of the plate measured from theA -ends along Yboth longitudinal edges.
  • each distance piece may be made from a single strip bent to shape with its used and their disposition being the same in either case.
  • the plates must be provided with bolt holes.
  • sixteensuch holes In a plate measuring approximately 6 feet by 4 feet it is desirable for sixteensuch holes to be ar-l ranged symmetrically in four rows as shown best in Figures l and 3.
  • Thesymmetry of the arrangement Vis optional but is designed to ensure complete reversibility of the plates and consequent simplicity in assembly. It is preferable to adopt the arrangement illustrated wherein the corner distance pieces 13 are diagonally arranged and associated with bolts so that the plates of the top layer may be located as subsequently described. The remaining distance pieces are secured by welding only, some 14 being arranged longitudinally of the plates and others 15 transversely to take up the stresses in these directions.v
  • the bolts ⁇ 18 employed are inserted from vthe underside of the bottom plate through holes 19V and are suiflciently long to project through the distance piece and above the top'plate when the projections 2O act ultimately asa bond or key for the top dressing or surfacingpreventing creep. After the insertion ofthe bolt through the bottom plate the bottomfseating of thedistance piece is threaded thereon and a nut 21 screwed onto the bolt.
  • the'bottom layer of plates After the'bottom layer of plates is completely laid it is, in the case of a road, finished 01T on the opposite edge with a second curb of the kind already described, and the edges of all the plates are then preferably secured by welding at intervals.
  • the concrete 23 is then filled in to the depth of the distance pieces and the addition' of the top layer of plating is put in'hand.
  • the individual plates 22 of the top layer and those of the bottom layer are staggered in every possible-sense so that the junctions between the plates in one layer are nowhere opposite the junctionsv inV ⁇ the other, thus adding materially to the,
  • the holes 25j provided .in the. top plates are designed to lie opposite the distancepieces. They are preferably-made considerablylarger thanthe securing bolts ⁇ 18 and: may .be with advantageas much asofthree times-greater diameter, so as to allow. for any'. inequalities which mayv occur in the laying out iofthe top plates.. VThis hole is designed to bezcoveredby awashen-plate 26;.around'the bolt 18 and resting on the top plate 22,;v lto whichi its. edges.
  • platesV 30 of the bottom layer are delivered to the site unworked and the feet 31 of the stirrups are then secured thereto by welding with the angles 32 upwardly projecting.
  • a regular diagonal disposition of the stirrups is shown in Figure 8 and is found in practice to be a desirable arrangement.
  • the lower layer of plating is then laid and the concrete is lled in around the stirrups.
  • the plates 33 of the top layer are formed with short slots 34 through eachof which the angular summit of one of the stirrups projects, the ends 35 of the slot resting respectively on the sloping legs 29 of the stirrup.
  • the completed foundation is designed to be used for supporting a top layer of any suitable road surfacing material such as a bituminous macadam, stone sets, rubber or the like.
  • A' road Vori.likelfoundation"embodying therein spaced metallic platings, devices for holding said ⁇ platings inG spacedrelatinp certain of said devices f comprising"1" ⁇ invertedl substantially ⁇ V- shaped members'each' having feet welded to thev bottom: platingwandhaving its bend or crotch upwardl'y directed toV extend .through associated openings iin the top-plating :and wedges engaged withsaidfbend or crotch of said members'above said topk plating and whichwedges force the top plate downwardly to bring portions of said'openings into engagement with the legs of said invertedpV-shaped members.
  • a road or like foundation embodying therein spaced top and bottom metallic platings, there being openings in the top plating, and inverted V-shaped members for holding said platings in spaced relation, certain of said portions of said top plating defining said openings being welded to parts of the legs of said inverted V-shaped members.
  • a road or like foundation embodying therein, spaced separate top and bottom thin metallic iiexible platings, a iiller of rigid cementitious may terial therebetween, and devices, certain ones of which are operatively connected at their top end to one of said platings and othero-nes of which devices are operatively connected at their bottom end to the other of said platings, said devices being embedded in said ller and so formed and so arranged in saidller as to absorb horizontal stresses in any lateral direction as induced by the tendencyv of relative slipping movement between said platings and'ller.
  • a road or like foundation embodying therein, spacedtop and bottom platings, a filler of rigid cementitious material therebetween, devices operatively connected at their top and bottom portions to said platings and embedded in said ller, said devices being so formed and so arranged as to absorb horizontal stresses in any lateral direction as induced by the tendency of relative slipping movement between said platings and filler, and vertical curb plates closing the structure at each side thereof and formed to projectdownward into the subsoil upon which the structure is laid.
  • a road foundation comprising spaced separate top and bottom thinmetallic exibleV platings, a cementitious filler, between said platings, and shearing stress absorbing devices embedded in said iiller,V certain ,of said devices being en gaged with the top plating and ,extending toward the bottom plating and other of-said devices being engaged withl the-bottom plating and' extendingtoward the top casingand means for se ⁇ curing said platings ⁇ and said devices together in loperative relation.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
US601142A 1931-11-30 1932-03-25 Manufacture of roads, yards, aerodromes, and the like surfaces Expired - Lifetime US1988613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33159/31A GB385718A (en) 1931-11-30 1931-11-30 An improved manufacture of roads, yards, aerodromes and like surfaces and means therefor

Publications (1)

Publication Number Publication Date
US1988613A true US1988613A (en) 1935-01-22

Family

ID=10349295

Family Applications (1)

Application Number Title Priority Date Filing Date
US601142A Expired - Lifetime US1988613A (en) 1931-11-30 1932-03-25 Manufacture of roads, yards, aerodromes, and the like surfaces

Country Status (4)

Country Link
US (1) US1988613A (da)
DK (1) DK46791C (da)
FR (1) FR732550A (da)
GB (1) GB385718A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759009A (en) * 1971-01-28 1973-09-18 Gordon T Kinder Composite load bearing panels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759009A (en) * 1971-01-28 1973-09-18 Gordon T Kinder Composite load bearing panels

Also Published As

Publication number Publication date
FR732550A (fr) 1932-09-21
DK46791C (da) 1933-01-16
GB385718A (en) 1933-01-05

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