US3299642A - Erection of a dam having an internal apron - Google Patents

Erection of a dam having an internal apron Download PDF

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Publication number
US3299642A
US3299642A US277809A US27780963A US3299642A US 3299642 A US3299642 A US 3299642A US 277809 A US277809 A US 277809A US 27780963 A US27780963 A US 27780963A US 3299642 A US3299642 A US 3299642A
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United States
Prior art keywords
apron
dam
walls
fill
partitions
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Expired - Lifetime
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US277809A
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English (en)
Inventor
Alfred Feiner
Rudolf Hamann
Clemens Schopf
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Strabag Bau AG
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Strabag Bau AG
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    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4886—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ for forming in a continuous operation kerbs, gutters, berms, safety kerbs, median barriers or like structures in situ, e.g. by slip-forming, by extrusion
    • E01C19/4893—Apparatus designed for railless operation
    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4833—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02—Fixed barrages
    • E02B7/04—Dams across valleys
    • E02B7/06—Earth-fill dams; Rock-fill dams
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material

Definitions

  • the apron can be formed of any suitable material such as, for example, material which can be compacted to a stable impermeable condition.
  • Bituminous material asphalt cement
  • Bituminous internal barriers due to their greater density and uniform composition, may have a substantially slighter thickness than barriers made of such natural impermeabilizing materials as clay, loam or clay concrete and loam concrete. Whereas in the case of the latter a thickness of one-third to one-sixth of the height of the dam is required, thicknesses of one-twentieth to one-fiftieth of the dam height may suffice in the case of bituminous materials.
  • the form cannot be stripped off until after a considerable length of time, namely, not until all of the impermeable material has been placed between the walls of the form, and the pouring of the fill laterally of the form has been completed, and the layers of material have been leveled off.
  • Bituminous concrete hardens during this time, so that an intimate interlocking of the concrete With the grit of the adjacent fill material can no longer take place, and even the necessary tampin-g of the bituminous material can be performed but imperfectly.
  • the procedure is such that the materials of the sealing apron and of the adjacent (upstream and downstream) fill are poured and graded to about the same level simultaneously and continuously along the course of the dam, while being separated from one another by parallel vertical or inclined partition-s moving along the work surface, whereupon the materials left directly in contact with one another after the partitions have passed are simultaneously tamped down.
  • the new method makes it possible to build up the dam in the vicinity of the waterproof barrier continuously, layer by layer, while at the same time achieving a sharp separation (without overflow into one another) between the material of the impermeable barrier and the lateral fill. In this manner, the assurance is obtained that the impermeable barrier has a uniform thickness and contains no foreign matter from the adjacent earth fill that might adversely influence its impermeability and permanence.
  • the apparatus for the practice of the new method consists, according to the invention, of two parallel partitions standing on edge, whose distance apart is equal to the thickness of the impermeable barrier, means for advancing the partitions along the work surface of the dam, means for pouring and leveling the fill material outside of the parallel partitions on the upstream and downstream sides of the dam, means for pouring and leveling the impermeable barrier material between the parallel partitions, and vibrating tampers disposed rearwardly in the line of movement, behind the parallel partitions, for the simultaneous compaction of the separately poured and leveled materials.
  • the parallel partitions permit the simultaneous but spatially separate pouring and leveling of the materials of the impermeable barrier and the adjacent fill, so that it will be impossible for them to spill over into one another. Consequently, they give an absolute assurance that the structure of the impermeable barrier will have the necessary homogeneity and a uniform thickness.
  • a hopper to contain the impermeable barrier material is placed on the parallel partitions, the bottom opening of said hopper being located between said partitions. In this manner it is brought about that the impermeable barrier materials pour from the hopper into the space between the partitions at a rate dependent upon the movement of the latter.
  • This method of pouring the impermeable barrier material entirely prevents the formation of cones and hence the separation of the material. It assures that the structure of the impermeable barrier will be entirely homogeneous.
  • the invention provides a method for erection of dams with an internal sealing apron, the method involving: (a) advancing over the course on which apron is to be laid a pair of vertically extending partition walls spaced to provide a form for the transverse cross-section of the apron, the partition Walls being shorter in length than the dam, and progressively and simultaneously depositing material for forming the apron between the forms, and depositing fill material adjacent and on the outer side of each of the forms, whereby as the forms advance over the course, the apron material and the fill are laid up side by side behind the forms; and compacting the apron material and the fill laid up side by side as aforesaid.
  • increments of the height of the dam can be formed and the procedure can be repeated to form the successive height increments of the dam.
  • FIG. 1 is an elevation view partially in cross-section of apparatus according to the invention
  • FIG. 2 is a plan view of the apparatus shown in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line 33 .in FIG. 1;
  • FIG. 4 is an elevation view of apparatus, according to the invention, the apparatus including a vehicle for move ment thereof over the area to be worked;
  • FIG. 4a is a plan view of a portion of the apparatus shown in FIG. 4.
  • FIG. 5 is a plan view of the apparatus shown in FIG. 4.
  • the apparatus of FIGS. 1 to 3 comprises two parallel partitions 1 and 2, made of sheet steel and standing on edge vertically or aslant, and separated by a distance a (FIG. 3) which is equal to the thickness of the impermeable barrier 3.
  • the partitions are rigidly fastened to one another by cross members to assure their parallelism. Their bottom edges lie flush with the work surface and are driven over the work surface along the length of the dam in the direction indicated by the arrow 32 and at the necessary working speed.
  • the partitions may consist of a plurality of sections coupled together by articula tion hinge connections such as hinge 4. In this manner, they adapt themselves better to slight unevenness in the work surface without losing contact therewith at portions of their bottom edges.
  • the forward portion of the parallel partitions forms a shelter member 33 having a peaked roof 5 covering the space between the forward part of the partitions, and at the front a nose plate 6 on the order of the bow of a ship is provided. Further, the shelter member is provided with earth bearing plates 16 to prevent the walls from digging into the material over which the apparatus travels.
  • a hopper 8 for the impermeable barrier material On the rear portion of the parallel partition walls is provided a hopper 8 for the impermeable barrier material, the bottom outlet of which empties into the area between the parallel partitions- Behind the hopper 8 between the partitions there is provided a regulating gate 9, which is adjustable vertically by operation of the suspension rod 9a and determines the level at which the impermeable barrier material is spread.
  • a lateral traction bar 10 is fastened to the end of the parallel partitions 1 and 2, and to it are hitched three vibrating compactors 11, 12 and 13 of any known design.
  • the outer two compactors, 11 and 13, operate in the area of the material graded by the leveling blade 7, while the middle one 12, compacts the material that is leveled oil? by the regulating gate 9.
  • the middle compactor 12 can have a bottom plate that is heated by gas or oil burners (not shown) so as to prevent the adhesion to same of the bituminous materials it is compacting.
  • the plane of the vibrations of the compactors 11 to 13 is preferably inclined towards the horizontal, so that a component of motion will be imparted to the compactors in the direction of movement of the parallel partitions. In this manner, accumulations of material at the forward edges of the compactors will be prevented, such accumulations which could result in undesired lateral displacement of the material, especially in the surface area.
  • the desired plane of vibration can be obtained by joining the vibrators to the body of the apparatus by short connecting rods 35 in the manner that the points of connection at the compactors is at a level below the points of connection to the body of the apparatus.
  • the material being used as fill on the upstream and downstream side of the dam which is generally coarsely crushed stone, is dumped by a clamshell bucket 14, for example, in front of leveling blade 7 on the roofed portion of the parallel partitions.
  • the material slopes down towards both sides of the parallel partitions in the area of the leveling blade 7, and is scraped level by same to a certain depth or", say, 20 to 25 centimeters.
  • the shelter member 33 is disposed on the front end of the apparatus and is formed so that it overlies the course along which the apron material is to be laid.
  • the roof 5 of the shelter member prevent fill material from falling along the coarse on which the apron material is to be laid. See FIG. 3.
  • fill material impermeable barrier material preferably bituminous material composed according to German Federal Patent 1,108,620
  • the partition walls move forward, the trailing end of the partition walls are pulled out from the material leaving the apron and fill material laid up side by side behind the walls. Since they have been graded to about the same depth, there can be no overflow from the one to the other.
  • the compactors are mounted on the body of the apparatus and as close to the partition walls as is convenient so that the compacting can be performed sub stantially as soon as the partition walls have been pulled through the material laying the apron and fill up side by side.
  • the compactors are spaced from the rear end of the partition walls in the order of several feet.
  • the load-bearing mineral grits of the adjacent materials are therefore tightly pressed together in the area of the dividing line and are perfectly interlocked with one another, so that, according to the teaching of German Federal Patent 1,108,620, a single load-bearing skeleton develops throughout the entire dam that provides the latter with outstanding static characteristics.
  • the dam is built up layer by layer to form successive height increments in the manner described above.
  • FIGS. 4 and 5 The apparatus represented in FIGS. 4 and 5 is selfpropelled and otherwise is the same as that represented in FIGS. 1 to 3.
  • the reference numbers of this schemat-1c representation are therefore the same where the same components are concerned.
  • the parallel partitions 1 and 2 are rigidly affixed to the hopper 3 for the impermeable barrier materials, and they are suspended so as to be able to be raised and lowered together with the regulating gate 9 by means of the hydraulic cylinder 17 on the vehicle frame 18.
  • the force required for the forward movement of the partitions is transmitted from the vehicle frame through special pull rods 19, which are articulated to the vehicle frame and to the partitions 1 and 2.
  • the leveling blade 7 is also articulated to the vehicle frame 18, and is raised and lowered by means of the hydraulic cylinder 20 in order to adjust the grade level.
  • the vibrating compactors 11, 12 and 13 are articulated to the transporting vehicle and can be raised and lowered by means of the boom 21 fastened to frame 18 and the hydraulic cylinder 22.
  • the shelter member 33 can be folded upwardly so as to be in an out of the Way position when not being used.
  • the transporting vehicle travels on its crawler treads 23 or pneumatic tires on the work surface created by the leveling blade 7 on the fill being deposited on both sides, and it is selfpropelled by a diesel engine which is also the source of energy for the hydraulic pump for the operation of the hydraulic cylinders 17, 20 and 22, and is the source, through an electric current generator which it drives, of the electrical power for the infrared radiators 15.
  • FIGS. 4 and 5 The position of the self-propelled apparatus when in operation, is -as represented in FIGS. 4 and 5, and the manner of operation is the same as described with reference t the schematic representation in FIGS. 1 to 3.
  • the front portion of the parallel partitions 1 and 2 is elevated as indicated in phantom in FIG. 4a.
  • the partitions 1 and 2 are elevated by the hydraulic cylinder 17 and the vibratory compactors 11 to 13 are elevated by hydraulic cylinder 22 to such an extent that the vehicle will have the necessary ground clearance to travel even at greater speeds.
  • Apparatus according to the invention was utilized to construct a dam 16 m. in height and 130 In. in length.
  • An internal sealing apron 0.6 m. in thickness was provided and this sealing apron was composed of asphalt concrete containing mineral aggregate 025 mm. and was applied at a temperature of 160180 C.
  • the height of material (asphalt concrete and fill) poured during each pass or course, was 0.25 m., and this height of material was compacted to 0.20 m. by the trailing compactors.
  • the speed of the equipment was at an average of about 0.7 m. per minute and, for the work described here, can vary from 0.1-2 m. per minute. About m. per hour of compacted asphalt concrete was applied.
  • the drive capacity for the equipment was about 8.5 hp.
  • the vibrating compactors were excited by eccentrically mounted rotating weights at a frequency of about 27 I-Ierz.
  • the centrifugal force of the eccentric weights was 2000 kg. each, and the drive capacity of each vibrator sealing apron which comprises advancing in the direction of the length of the dam over the course on which the apron is to be laid a pair of vertically extending partition walls spaced to provide a form for the transverse cross-section of the apron, said walls being shorter in length than said dam, progressively and simultaneously with said advancing depositing material in a plastic state between the walls for forming the apron, and depositing fill material adjacent and on the outerside of each of the walls to substantially the level of the deposited apron material whereby as the walls advance over the course, the apron material and the fill material provide upright confronting surfaces side by side behind the walls, and while the apron material is still in plastic state compacting the apron material
  • thermoplastic thermoplastic

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Hydrology & Water Resources (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
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  • Building Environments (AREA)
  • Road Paving Machines (AREA)
US277809A 1962-11-14 1963-05-03 Erection of a dam having an internal apron Expired - Lifetime US3299642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST19964A DE1170329B (de) 1962-11-14 1962-11-14 Verfahren zum lagenweisen Einbau von Kerndichtungen, insbesondere bituminoesen, fuerStaudaemme im Zuge der lagenweise erfolgenden Dammschuettung und Vorrichtung zur Durch-fuehrung des Verfahrens

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US277809A Expired - Lifetime US3299642A (en) 1962-11-14 1963-05-03 Erection of a dam having an internal apron
US586250A Expired - Lifetime US3429130A (en) 1962-11-14 1966-10-12 Dam construction

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US586250A Expired - Lifetime US3429130A (en) 1962-11-14 1966-10-12 Dam construction

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AT (1) AT244246B (de)
CH (1) CH428587A (de)
DE (1) DE1170329B (de)
GB (1) GB975670A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891338A (en) * 1973-04-30 1975-06-24 Barber Greene Co Convergent link system for connecting a screed to the traction unit of a paving machine
US20200149229A1 (en) * 2018-11-08 2020-05-14 Jeffery Lynn Matkin Systems and methods for providing an undercarriage material handling system

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US4028902A (en) * 1976-10-01 1977-06-14 Central Illinois Tile Co. Apparatus for laying elongated flexible tubing
GB1595290A (en) * 1976-11-22 1981-08-12 Nat Res Dev Embankments construction
DE2917970A1 (de) * 1979-05-04 1980-11-13 Sudbrack Bernfried Vorrichtung und verfahren zur formung und endverdichtung freistehender kerndichtungslagen und verfahren zum bau von kerndichtungen fuer staudaemme aller art
NL8100956A (nl) * 1981-02-27 1982-09-16 Bitumarin Nv Werkwijze voor het laagsgewijs aanbrengen van kernmateriaal en van het aangrenzende overgangsmateriaal voor dammen.
US4508471A (en) * 1982-03-19 1985-04-02 Bitumarin B.V. Method and machine for the layered placing of core material and of the adjacent transitional material for dams
FR2605339B1 (fr) * 1986-10-16 1988-12-02 Charbonnages Ste Chimique Appareil pour la surelevation des digues en continu.
FR2704010B1 (fr) * 1993-04-13 1995-07-21 Screg Routes & Travaux Procede de repandage en continu d'enrobes, dispositif d'alimentation pour engin de repandage d'enrobes, et finisseur correspondant.
US5641249A (en) * 1995-02-17 1997-06-24 Hubbard Construction Company Aggregate extruder
FI113850B (fi) * 2002-01-30 2004-06-30 Consolis Technology Oy Ab Menetelmä ja laite betonituotteiden valamiseksi
FI115760B (fi) * 2002-04-08 2005-07-15 Consolis Technology Oy Ab Menetelmä betonituotteen valamiseksi
US7500806B2 (en) * 2004-06-30 2009-03-10 Barnard Construction Company, Inc. Method and apparatus for constructing filter zones in earthfill dams
ES2332085B2 (es) * 2009-06-15 2010-06-28 Universidad Politecnica De Madrid Estabilizador de formas costeras de deposito.
RU2426832C1 (ru) * 2009-12-14 2011-08-20 Государственное образовательное учреждение высшего профессионального образования "Иркутский государственный технический университет" (ГОУ ИрГТУ) Способ строительства земляного водоподпорного сооружения в теплый период (варианты)
US10273641B2 (en) * 2013-02-19 2019-04-30 Gonzalo Fernandez Lopez Equipment for concreting and moulding gutters

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US922207A (en) * 1908-11-19 1909-05-18 Anton Strauss Method of providing water-tight vertical layers in dams, dikes, &c., and in simultaneously compressing portions of ground adjacent thereto.
US1323027A (en) * 1919-11-25 Land-drainage system
US1376852A (en) * 1920-08-27 1921-05-03 Herman P Andresen Combination heater and maintenance-wagon
US1441308A (en) * 1922-01-10 1923-01-09 Charles O Tappan Method of constructing the impervious element of earth dams
US1507255A (en) * 1921-03-25 1924-09-02 Jacob R Sensibar Method of building dykes
US1571446A (en) * 1924-07-28 1926-02-02 Julius M Howells Hydraulic-fill-dam-building machine
US2035627A (en) * 1933-09-13 1936-03-31 Manitowoc Ship Building Corp Apparatus for laying pavements
US2096159A (en) * 1933-01-18 1937-10-19 Blaw Knox Co Method and apparatus for constructing concrete walls
US2255346A (en) * 1939-08-07 1941-09-09 Baily Robert William Apparatus for making concrete roadways
US2351592A (en) * 1940-08-01 1944-06-20 Barber Greene Co Tamper, screed, and deflector construction for road finishing machines
US2539063A (en) * 1948-12-06 1951-01-23 Southwest Paving Company Variable width ditch paver
US2551110A (en) * 1947-12-26 1951-05-01 Fuller Revilo Portable form for lining irrigation ditches
DE912918C (de) * 1938-11-04 1954-06-03 Wilhelm Ludowici Dr Ing Vorrichtung zur Herstellung eines Kunststeinfundamentes mit Hohlraeumen
US2757514A (en) * 1951-07-16 1956-08-07 Cronese Products Inc Method of forming an impermeable wall in the terrain
US2762276A (en) * 1953-04-17 1956-09-11 Walter G Mauch Spreader for road surfacing materials
FR1142306A (fr) * 1956-03-05 1957-09-17 Strabag Bau Ag Garniture d'étanchéité intérieure, notamment écran d'étanchéité pour murs ou fondation d'ouvrages de barrage
US2899877A (en) * 1959-08-18 Paving machine

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US2351593A (en) * 1940-08-01 1944-06-20 Barber Greene Co Screed construction for road finishing machines
US2589634A (en) * 1949-12-23 1952-03-18 Charles H Shook Apparatus for laying concrete
US2885861A (en) * 1954-09-03 1959-05-12 Jackson Vibrators Vibratory compactor for ditches, canals and the like

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1323027A (en) * 1919-11-25 Land-drainage system
US2899877A (en) * 1959-08-18 Paving machine
US922207A (en) * 1908-11-19 1909-05-18 Anton Strauss Method of providing water-tight vertical layers in dams, dikes, &c., and in simultaneously compressing portions of ground adjacent thereto.
US1376852A (en) * 1920-08-27 1921-05-03 Herman P Andresen Combination heater and maintenance-wagon
US1507255A (en) * 1921-03-25 1924-09-02 Jacob R Sensibar Method of building dykes
US1441308A (en) * 1922-01-10 1923-01-09 Charles O Tappan Method of constructing the impervious element of earth dams
US1571446A (en) * 1924-07-28 1926-02-02 Julius M Howells Hydraulic-fill-dam-building machine
US2096159A (en) * 1933-01-18 1937-10-19 Blaw Knox Co Method and apparatus for constructing concrete walls
US2035627A (en) * 1933-09-13 1936-03-31 Manitowoc Ship Building Corp Apparatus for laying pavements
DE912918C (de) * 1938-11-04 1954-06-03 Wilhelm Ludowici Dr Ing Vorrichtung zur Herstellung eines Kunststeinfundamentes mit Hohlraeumen
US2255346A (en) * 1939-08-07 1941-09-09 Baily Robert William Apparatus for making concrete roadways
US2351592A (en) * 1940-08-01 1944-06-20 Barber Greene Co Tamper, screed, and deflector construction for road finishing machines
US2551110A (en) * 1947-12-26 1951-05-01 Fuller Revilo Portable form for lining irrigation ditches
US2539063A (en) * 1948-12-06 1951-01-23 Southwest Paving Company Variable width ditch paver
US2757514A (en) * 1951-07-16 1956-08-07 Cronese Products Inc Method of forming an impermeable wall in the terrain
US2762276A (en) * 1953-04-17 1956-09-11 Walter G Mauch Spreader for road surfacing materials
FR1142306A (fr) * 1956-03-05 1957-09-17 Strabag Bau Ag Garniture d'étanchéité intérieure, notamment écran d'étanchéité pour murs ou fondation d'ouvrages de barrage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891338A (en) * 1973-04-30 1975-06-24 Barber Greene Co Convergent link system for connecting a screed to the traction unit of a paving machine
US20200149229A1 (en) * 2018-11-08 2020-05-14 Jeffery Lynn Matkin Systems and methods for providing an undercarriage material handling system
US10676878B2 (en) * 2018-11-08 2020-06-09 Jeffery Lynn Matkin Systems and methods for providing an undercarriage material handling system

Also Published As

Publication number Publication date
CH428587A (de) 1967-01-15
AT244246B (de) 1965-12-27
DE1170329B (de) 1964-05-14
US3429130A (en) 1969-02-25
GB975670A (en) 1964-11-18

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