US3848377A - Mat foundation - Google Patents

Mat foundation Download PDF

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Publication number
US3848377A
US3848377A US35217773A US3848377A US 3848377 A US3848377 A US 3848377A US 35217773 A US35217773 A US 35217773A US 3848377 A US3848377 A US 3848377A
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Prior art keywords
foundation
lattice
joining
blocks
lattice framework
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Expired - Lifetime
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M Mori
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M Mori
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/02Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • E04B1/043Connections specially adapted therefor
    • E04B1/046Connections specially adapted therefor using reinforcement loops protruding from the elements
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/01Flat foundations
    • E02D27/02Flat foundations without substantial excavation

Abstract

Mat foundation for use in construction work in a pit excavation in the ground, a foundation lattice framework is provided by juxtaposing concrete lattice frames on the bottom of the excavation. Foundation blocks are placed in alignment on the foundation lattice framework so as to be astride adjacent lattice frames, adjacent joints of the foundation blocks being so disposed as to be located over an open space of the foundation lattice framework. There, joints are connected and secured to each other by metal implements, a reinforcing bar being located on connecting metal implements. The lowermost ends of the reinforcing bar extends to the open space of the foundation lattice framework, which open space of the foundation blocks are filled with concrete.

Description

Mori
[451 Nov. 19, 1974 MAT FOUNDATION Masahi Mori, No. 91 Aza-Matsuogawa, Zaohango, Yamagata-shi, Yamagata-ken, 1 Japan Filed: Apr. 18, 1973 Appl. No.: 352,177
Inventor:
Foreign Application Priority Data Sept. 2, 1973 Japan 48-16261 U.S. Cl 52/169, 52/292, 52/295, I 52/432, 52/438, 52/583 Int. Cl E02d 27/00 Field of Search 52/169, 292, 436, 438, 52/293, 294, 295, 742, 432, 583, 274, 264, 606, 442, 586, 585, 584, 437, 259; 61/39 11/1954 Bridwell 52/293 X Adams .1 52/586 FOREIGN PATENTS OR APPLICATIONS 759,688 5/1967 Canada 52/274 Primary Examiner-Frank L. Abbott Assistant Examiner-Carl D. Friedman Attorney, Agent, or Firm-George B. Oujevolk [57] ABSTRACT Mat foundation for use in construction work in a pit excavation in the ground, a foundation lattice framework is provided by juxtaposing concrete lattice frames on the bottom of the excavation. Foundation blocks are placed in alignment on the foundation lattice framework so as to be astride adjacent lattice frames, adjacent joints of the foundation blocks being so disposed as to be located over an open space of the foundation lattice framework. There, joints are connected and secured to each other by metal implements, a reinforcing bar being located on connecting metal implements. The lowermost ends of the reinforcing bar extends to the open space of the foundation lattice framework, which open space of the foundation blocks are filled with concrete.
2 Claims, 4 Drawing Figures I MAT FOUNDATION BACKGROUND OF THE INVENTION BRIEF REVIEW OF THE PRIOR ART Heretofore, the mat foundation used in construction was installed as follows: The ground was excavated. Cobble stones were manually laid uniformly, grave] or the like being spread thereon and consolidated by pounding. Concrete was then poured thereon and cured for a predetermined period of time. The surface was leveled by applying mortar after hardening of the concrete. The mat foundation body was then installed after hardening of the mortar. Consequently, it was necessary to build frames after marking on the leveled mortar the position of the breadth of the mat foundation body, concrete being poured and hardened in the frames, said frames being disassembled to obtain the required mat foundation body.
However, this method of installing a mat foundation body had a defect in that it necessitated use of natural cobble stones which are now in short supply, and it comprised a large number of steps resulting in the lack of constructional precision. Moreover, the operation had to be discontinued for a certain period of time until the concrete hardened, and a greatdeal of labor was necessary in building the frames for the mat foundation body with the resultthat the operational efficiency and economy were greatly impaired.
The mat foundation according to the present invention makes it possible to obviate the disadvantages involved in the aforementioned conventional mat foundation installing method.
OBJECTS OF THE INVENTION Thus, it is an object of this invention to improve the operational simplicity and the constructional precision by constructing a mat foundation by means of combin- SUMMARY OF THE INVENTION Generally speaking, the present invention contemplates a mat foundation for use in construction .work in a pit excavation in the ground, a foundation lattice framework is provided by juxtaposing concrete lattice frames on the bottom of the excavation. Foundation blocks are placed in alignment on the foundation lattice framework so as to be astride adjacent lattice frames, adjacent joints of the foundation blocks being so disposed as to be located over an open space of the foundation lattice framework. There, joints are connected and secured to each other by metal implements, a reinforcing bar being located on connecting metal implements. The lowermost ends of the reinforcing-bar extends to the open space of the foundation lattice framework, which open space of the foundation blocks are filled with concrete.
' The preferred embodiments of this invention are de scribed in detail hereinunder with reference to the annexed drawings, of which:
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of mat foundation according to this invention;
' FIG. 2 is a plan of said mat foundation contemplated herein;
FIG. 3 is a sectional view taken by the line Illlll in FIG. 2, showing the state of installation on a pit excavation; and,
FIG. 4 is a sectional view showing another embodiment different from that of FIG. 3.
DETAILED DESCRIPTION Referring now to the drawings, the numeral 1 denotes the ground, a pit excavation 2 being carried out in said ground, sand 3 being spread thereon uniformly, leakproof cloth 4 of vinyl or the like being placed on said sand 3. As shown in FIG. 2, lattice frames 7, 7' each consisting of concrete and comprising at least more than two longitudinal bars 5, 5' and transve rse bars 6, 6' are juxtaposed and a foundation lattice framework 8 is thus constructed.
On the foundation lattice framework 8 are placed foundation blocks 9, 9 in alignment and disposed rectangularly to longitudinal bars 5, 5 so as to be astride adjacent lattice frames 7, 7' and at least more than two longitudinal bars 5, 5'
The adjacent joints 10 of the aligned foundation blocks 9, 9' are adapted to be located above an open space 11 of the foundation lattice framework 8. A pin 13 is inserted through metal implements 12, 12 provided as jointing members on both ends of the foundation blocks 9, 9' thereby enabling to securely join the adjacent foundation blocks 9, 9' to each other.
The metal implements 12,12 are adapted to project from longitudinal concave grooves 14 formed at both ends of the foundation blocks 9, 9.
On the adjoining sides of the foundation blocks 9-, 9' are knotches l5 insertion of a pin 13 throughthe metal implements 12, 12.
The metal implements l2, 12 are provided at the upper and lower parts of the longitudinal concave grooves 14 of the foundation blocks 9, 9, one of said metal implements 12 being in the shape of a flat plate, the other metal implement 12 being so formed as to have a concave part to receive the flat metal implement 12 therebetween in a tongue in groove arrangement, the two metal implements l2, 12' being secured in place by inserting the pin 13 therethrough as shown in FIG. 2.
A reinforcing bar 16 having an inverted U-shaped section is fixed onto the upper one of the jointing mem bers, the lowermost ends 17 of said reinforcing bar 16 extending up to the open space 11 of the foundation lattice framework 8, thereafter the open space 11 and the joints 10 of the foundation blocks 9, 9' are filled with concrete 18 to obtain the mat foundation.
In the embodiment shown in FIG. 4, the transverse bars 6, 6 of the lattice frame 7 are formed in the shape of an inverted trapezoid unlike the case of the embodiment shown in FIG. 3. Therefore, the lattice frame can be leveled with ease by pounding the refilling earth 21 restored to the apertures 20' between the side walls 19 of the pit excavation 2 and the lattice frame 7 since the refilling earth 21 bites into the lower end of lattice frame 7 as a result of the pounding.
In the embodiment shown in FIG. 3, the lowermost ends of the reinforcing bar 16 are outwardly bent respectively. However, as shown in FIG. 4, such outward bending is not always necessary.
Leakproof cloth 4 is spread on the sand 3 as shown in FIG. 3. However, such cloth 4 can also be omitted. Furthermore, as to the joints of the adjacent foundation blocks 9, 9' and the metal implements l2, 12' for use in connecting said joints to each other as shown' in the drawings, it goes without saying that the construction of such joints and jointing members can be suitably modified.
Moreover, if the concrete 18 used is of the same quality as that of the lattice frame 7, the lattice frame 7 and the foundation block 9 can be integrated.
As hereinbefore described, this invention relates to a mat foundation constructed by the use of lattice frames and foundation blocks are produced in the factory and assembled in the construction field with the result that the constructional precision can be greatly increased. Moreover, since these lattice frames and foundation blocks are light and convenient for transportation, the construction work is greatly facilitated.
As hereinbefore described, on a foundation lattice framework 8 made of lattice frames, foundation blocks 9, 9' are placed in alignment so as to be astride adjacent lattice frames 7, 7'. The joints 10 of adjacent foundation blocks 9, 9 are placed so as to be located above open space 11 of the foundation lattice framework 8, the lowermost ends of a reinforcing bar 16 is fixed onto the joints 10 and extends up to the open space 1 1 of the foundation lattice framework 8, as a result of which not only the foundation framework, but also the foundation blocks can be integrated and consolidated by filling the the construction period can be greatly reduced since the assembling can be done without the necessity of discontinuing work and waiting until the concrete hardens.
I claim:
1.5 A mat foundation comprising in combination a foundation lattice framework of lattice frames juxtaposed on the bottom of a pit excavation, said lattice frames having transverse bars formed in the shape of an inverted trapezoid; vertically elongated foundation blocks having lateral joining sections aligned on the foundation lattice framework, each of said foundation blocks being so disposed as to be astride adjacent lattice frames; adjacent joining section of the foundation blocks being so disposed as to be located above open spaces of the foundation lattice framework; notches on the joining sections to facilitate the securing of the joining members; metal tongue, groove and pin joint members connecting said joining section to each other, said tongue in one joining section entering the groove of another joining section to be held by said pin; a vertical reinforcing bar fixed to the joining members, the lowermost ends of the reinforcing bar being inwardly bent and extending into open space of the foundation lattice framework, the open space andthe joints being filled with concrete.
2. A mat foundation as defined in claim 1 wherein the concrete of the foundation lattice framework is of the same quality as the concrete poured into the open space of said foundation lattice framework and the joints of the foundation blocks.

Claims (2)

1. A mat foundation comprising in combination a foundation lattice framework of lattice frames juxtaposed on the bottom of a pit excavation, said lattice frames having transverse bars formed in the shape of an inverted trapezoid; vertically elongated foundation blocks having lateral joining sections aligned on the foundation lattice framework, each of said foundation blocks being so disposed as to be astride adjacent lattice frames; adjacent joining section of the foundation blocks being so disposed as to be located above open spaces of the foundation lattice framework; notches on the joining sections to facilitate the securing of the joining members; metal tongue, groove and pin joint members connecting said joining section to each other, said tongue in one joining section entering the groove of another joining section to be held by said pin; a vertical reinforcing bar fixed to the joining members, the lowermost ends of the reinforcing bar being inwardly bent and extending into open space of the foundation lattice framework, the open space and the joints being filled with concrete.
2. A mat foundation as defined in claim 1 wherein the concrete of the foundation lattice framework is of the same quality as the concrete poured into the open space of said foundation lattice framework and the joints of the foundation blocks.
US35217773 1973-02-09 1973-04-18 Mat foundation Expired - Lifetime US3848377A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124963A (en) * 1977-02-08 1978-11-14 Tadayasu Higuchi Method for forming a continuous footing
US4275538A (en) * 1980-01-22 1981-06-30 Bounds Edward G Building foundation method and system, with energy conservation and solar energy utilization features
EP0141465A2 (en) * 1983-11-04 1985-05-15 Dow Chemical (Nederland) B.V. A method of building a foundation, and shuttering unit for the application of said method
US4903450A (en) * 1989-05-02 1990-02-27 Adams Products Company Concrete footer block and foundation system formed therefrom
NL1006527C2 (en) * 1997-07-10 1999-01-12 Univ Eindhoven Tech Foundation-forming system for building
US6343443B1 (en) * 1999-09-17 2002-02-05 Henry F. Tylicki, Jr. Above ground safety shelter
US6367214B1 (en) * 1996-07-17 2002-04-09 Mosé Monachino Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
US20030167727A1 (en) * 2002-03-07 2003-09-11 Ta-Hsiung Peng Building construction method
WO2004007848A1 (en) * 2002-07-17 2004-01-22 John Terry Pidgeon Foundation structure
WO2010067382A1 (en) * 2008-12-12 2010-06-17 Halldor Geir Thorgeirsson Prefabricated housing basement structures and construction method thereof
US20100146872A1 (en) * 2007-05-08 2010-06-17 Hans-Berth Klersy Process of combining two modular units with one another, and a thus combined house body
US8523486B2 (en) 2012-02-06 2013-09-03 Contech Engineering Solutions LLC Concrete culvert assembly and related methods
US8789337B2 (en) 2011-07-08 2014-07-29 Contech Engineered Solutions LLC Foundation system for bridges and other structures
US20140311084A1 (en) * 2011-11-15 2014-10-23 Aceall Co., Ltd. Mesh foundation construction method using hollow blocks
US8925282B2 (en) 2011-07-08 2015-01-06 Contech Engineered Solutions LLC Foundation system for bridges and other structures
USD745186S1 (en) 2012-04-03 2015-12-08 Contech Engineered Solutions LLC Concrete bridge unit
USD751216S1 (en) 2012-02-20 2016-03-08 Contech Engineered Solutions LLC Concrete bridge unit
US9695558B2 (en) 2012-12-13 2017-07-04 Contech Engineered Solutions LLC Foundation system for bridges and other structures
US9970166B2 (en) 2012-02-06 2018-05-15 Contech Engineered Solutions LLC Concrete bridge system and related methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552712A (en) * 1949-03-08 1951-05-15 Ellis William Hite Keyed building block wall
US2685194A (en) * 1947-03-10 1954-08-03 Amirikian Arsham Precast concrete framing construction
US2695159A (en) * 1952-12-15 1954-11-23 Bridwell Gail Laurence Precast fence
CA759688A (en) * 1967-05-30 Robitaille Edouard Construction de semelle et de mur de fondation en beton
US3686817A (en) * 1969-12-15 1972-08-29 Richard W Adams Precast wall construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA759688A (en) * 1967-05-30 Robitaille Edouard Construction de semelle et de mur de fondation en beton
US2685194A (en) * 1947-03-10 1954-08-03 Amirikian Arsham Precast concrete framing construction
US2552712A (en) * 1949-03-08 1951-05-15 Ellis William Hite Keyed building block wall
US2695159A (en) * 1952-12-15 1954-11-23 Bridwell Gail Laurence Precast fence
US3686817A (en) * 1969-12-15 1972-08-29 Richard W Adams Precast wall construction

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124963A (en) * 1977-02-08 1978-11-14 Tadayasu Higuchi Method for forming a continuous footing
US4275538A (en) * 1980-01-22 1981-06-30 Bounds Edward G Building foundation method and system, with energy conservation and solar energy utilization features
EP0141465A2 (en) * 1983-11-04 1985-05-15 Dow Chemical (Nederland) B.V. A method of building a foundation, and shuttering unit for the application of said method
EP0141465A3 (en) * 1983-11-04 1986-06-11 Dow Chemical (Nederland) B.V. A method of building a foundation, and shuttering unit for the application of said method
US4903450A (en) * 1989-05-02 1990-02-27 Adams Products Company Concrete footer block and foundation system formed therefrom
US6408581B2 (en) 1996-07-17 2002-06-25 MONACHINO MOSé Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
US6367214B1 (en) * 1996-07-17 2002-04-09 Mosé Monachino Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
NL1006527C2 (en) * 1997-07-10 1999-01-12 Univ Eindhoven Tech Foundation-forming system for building
US6343443B1 (en) * 1999-09-17 2002-02-05 Henry F. Tylicki, Jr. Above ground safety shelter
US20030167727A1 (en) * 2002-03-07 2003-09-11 Ta-Hsiung Peng Building construction method
WO2004007848A1 (en) * 2002-07-17 2004-01-22 John Terry Pidgeon Foundation structure
GB2407108A (en) * 2002-07-17 2005-04-20 John Terry Pidgeon Foundation structure
US20050284086A1 (en) * 2002-07-17 2005-12-29 Pidgeon John T Foundation structure
GB2407108B (en) * 2002-07-17 2006-02-22 John Terry Pidgeon Foundation structure
US20100146872A1 (en) * 2007-05-08 2010-06-17 Hans-Berth Klersy Process of combining two modular units with one another, and a thus combined house body
US8393128B2 (en) * 2007-05-08 2013-03-12 Hans-Berth Klersy Process of combining two modular units with one another, and a thus combined house body
WO2010067382A1 (en) * 2008-12-12 2010-06-17 Halldor Geir Thorgeirsson Prefabricated housing basement structures and construction method thereof
US8789337B2 (en) 2011-07-08 2014-07-29 Contech Engineered Solutions LLC Foundation system for bridges and other structures
US8925282B2 (en) 2011-07-08 2015-01-06 Contech Engineered Solutions LLC Foundation system for bridges and other structures
US9359740B2 (en) * 2011-11-15 2016-06-07 Aceall Co., Ltd. Mesh foundation construction method using hollow blocks
US20140311084A1 (en) * 2011-11-15 2014-10-23 Aceall Co., Ltd. Mesh foundation construction method using hollow blocks
US8523486B2 (en) 2012-02-06 2013-09-03 Contech Engineering Solutions LLC Concrete culvert assembly and related methods
US9970166B2 (en) 2012-02-06 2018-05-15 Contech Engineered Solutions LLC Concrete bridge system and related methods
USD751216S1 (en) 2012-02-20 2016-03-08 Contech Engineered Solutions LLC Concrete bridge unit
USD745186S1 (en) 2012-04-03 2015-12-08 Contech Engineered Solutions LLC Concrete bridge unit
US9695558B2 (en) 2012-12-13 2017-07-04 Contech Engineered Solutions LLC Foundation system for bridges and other structures

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Publication number Publication date
JPS5147961B2 (en) 1976-12-17
JPS49104406A (en) 1974-10-03

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