|Publication number||US3457690 A|
|Publication date||Jul 29, 1969|
|Filing date||Jan 26, 1967|
|Priority date||Jan 26, 1967|
|Publication number||US 3457690 A, US 3457690A, US-A-3457690, US3457690 A, US3457690A|
|Inventors||Clercq Pierre Le|
|Original Assignee||Clercq Pierre Le|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (5), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
July 29, 1969 P. LE CLERCQ METHOD FOR GONSTRUCTING A BUILDING SIMULTANEOUSLY BELOW AND ABOVE GROUND LEVEL Filed Jan. 26, 1967 H n n I all PIERRE Ls Czskcq BY I I I RNEY I NVEN'T OR United States Patent U.S. Cl. 52-742 1 Claim ABSTRACT OF THE DISCLOSURE A building is constructed by sinking shafts from initial ground level, positioning posts in the shafts, embedding the posts in concrete below the final excavation floor level prior to general excavation and then constructing the upper and basement stories concurrently supported by the posts.
The present invention relates to a method for constructing a building and more particularly to a method of construction of multistory buildings simultaneously below and above ground level.
The construction of multistory buildings by conventional methods is costly and very time-consummg and generally requires the preliminary step of a substantially complete or even extended initial excavation, than the laying of foundation members and only then the progressive construction of the basement stories followed by the successive upper stories.
It is an object of the present invention to provide a novel method of constructing a building which enables the work to proceed more rapidly and concurrently, thereby reducing the completion time and overall cost.
From one aspect the invention comprises the method of constructing a building simultaneously below and above ground level comprising the steps of sinking shafts in the ground from the initial ground level, positioning posts in said shafts, embedding said posts in concrete serving as foundation below the base level of the excavation floor prior to excavating generally to said base level, said posts being intended to support the structure of the upper and basement stories even before constructing any framework.
The method may be performed, for instance, by the preliminary drilling of shafts in the soil from the initial ground level, by positioning in each of these shafts a prefabricated post, by fixing the base of this post in concrete up to a level not exceeding the level of the future excavation floor, by back-filling if desired with a preferably non-cohesive filling material, each of the shafts up to the initial ground level, these posts being intended to support the structure of the upperand basementstories in general even before constructing the, if desired partial, frame.
From another aspect the invention consists in a building constructed by the method of the invention.
Various features of the invention will be seen from the following description taken in conjunction with the accompanying drawing which shows, schematically and purely by way of non-limiting example, one embodiment of the method according to the invention.
Referring now to the drawing, the method is begun by forming shafts 1, round, square, rectangular, as a cross or any other form, from the initial ground level 2 to a depth 3 greater than the future excavation depth 7 and so as to reach a soil having suflicient load-carrying strength. The sinking of these shafts can be done by any possible process, by dry-drilling or with drilling mud, with or without casing, by machine or by hand, etc. In each of the shafts so sunk, there is placed in position a 3,457,690 Patented July 29, 1969 prefabricated upright member or post 4 of suitable material such as metal, concrete, wood, synthetic material, etc. The base 5 of this post 4 will descend below the future level of the excavation floor 7 and will be embedded in concrete 6 at most to the level 7 of the future excavation floor. If the risk of buckling is the governing factor, the
post 4 will be surrounded, at the upper part 8 of the column of the shaft with a material preferably noncoherent, such as sand, gravel, etc., to resist this buckling. On the post 4 thus placed in position, there can simultaneously be formed the structure 9 of the upper stories and the structure 10 of the basement stories. The structure 10 of the basement stories may if desired serve as shoring for the excavation holding the walls 11 forming the enclosing wall of the excavation. The structure 10 is then constructed as the excavation proceeds, following conventional methods but being supported on the posts 4.
The post 4 may take up the total or partial loads of the structures 9 and 10 according to the strength given to its concrete foundation. In the case of partial loads, the remainder of the loads may be taken up by a local or general complementary foundation 12, constructed on the floor of the excavation 7.
To make this process .as economical as possible, it is in general advantageous to provide light structures 9 and 10, for example metallic structures. If the under-pressure of water at the bottom 7 of the excavation is greater than the weight of the light building thus constructed, a filtering and draining layer may be laid on the bottom of the excavation 7, reducing this under-pressure to zero. This filtering layer may obviously be completed by a provisional or a permanent lowering of the water level.
On the posts 4, all types of structure may be built as a super-structure 9 and as .a substructure 10.
The prefabricated post 4 may be effected in all conventional ways. It may be effected moreover by the aid of a metallic tube which is filled with concrete after being placed in position, thus increasing its carrying capacity. Similarly, if it is a metallic section, it may afterwards be enclosed in concrete to achieve the same result.
These different methods enable the positioning of a light post, loaded and reinforced subsequently. They are not limiting and all processes consisting in subsequent reinforcement of the post 4 placed in position in the shaft 1 may then be applied.
In certain cases, the post 4 may have a provisional character and may be removed later to be replaced by another load-carrying member constructed from the bottom. of the excavation 7.
The essential advantage of the process described consists in being able to build the superstructure before or at the same time as the basement substructure, by means of a simple procedure and at relatively little cost. There results thereby a substantial gain in time which may be materialised, is an increased profit to the contractor. This process is of maximum value in the construction of buildings comprising large basements. In general, according to data obtained, the supplementary cost of the process according to the invention relative to the cost of conventional methods is distinctly less than the profitability of the time gained.
It will be apparent that various changes and modifications may be made without departing from the essential concept of the invention as defined in scope by the appended claim.
1. The method of constructing a multistory building simultaneously below and above ground level comprising the steps of (1) sinking vertical shafts in the earth from an initial ground level to a base level, (2) positioning and vertically aligning prefabricated metal posts within said shafts, said shafts being of greater size than said posts, (3) embedding the lower ends of said posts in concrete below the ultimate base level of the excavation floor prior to excavating generally to said ultimate base level, (4) surrounding substantially the entire length of said posts Within said shafts with a non-coherent packing material distinct from the adjacent unexcavated earth in Which said shafts are sunk from the ultimate base levelup 10 to the initial ground level to support said posts throughout that portion of their length which lies within said shafts and thus prevent buckling of the posts due to the load imposed by basement and upper stories as the construction progresses, (5) progressively excavating the earth and removing said earth and said non-coherent Y packing material from said ground level to said ultimate metal posts between said ground level and said ultimate base level, and simultaneously constructing upper stories above said ground level as the construction of said basement stories progresses, whereby said posts support the structure of both said upper and-basement stories.
References Cited STATES PATENTS UNITED 839,151 12/1906 Johnson 52421 2,166,577 7/1939"'Beckius 52169 2,492,882- 12/1949 Olmsted 52l69 3,197,964 8/1965 Fehlmann 52-742 FOREIGN PATENTS 940,500- 10/1963 Great-Britain.
FRANCIS K. ZUGEL; Primary Examiner Us. c1. X.R.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US839151 *||Nov 15, 1905||Dec 25, 1906||Eugene Malcolm Johnson||Composite pole for electric wires and other purposes.|
|US2166577 *||Sep 26, 1938||Jul 18, 1939||Antoine Beckius||Building suitable for countries liable to earthquakes|
|US2492882 *||Mar 18, 1946||Dec 27, 1949||Lillian W Olmsted||Steel post|
|US3184893 *||Apr 11, 1960||May 25, 1965||Contact Foundation Inc||Contact foundation method|
|US3197964 *||Dec 21, 1960||Aug 3, 1965||Fehlmann||Method for making a reinforced concrete structure|
|GB940500A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3720034 *||Mar 10, 1971||Mar 13, 1973||Dawley F||Methods for constructing multi-story structures|
|US3843988 *||Jul 14, 1972||Oct 29, 1974||Hess H||Method for excavating an underpass beneath an existing roadway|
|US4006574 *||Jun 30, 1975||Feb 8, 1977||Lely Cornelis V D||Method of forming a construction of building substructures|
|US6220789 *||Dec 29, 1998||Apr 24, 2001||Richard W. White||Integrated excavation shoring building foundation method|
|US6536181 *||Jan 13, 2000||Mar 25, 2003||Won Kee Hong||Composite retaining wall and construction method for underground structure|
|U.S. Classification||52/741.11, 52/745.5, 52/169.9, 52/236.3, 52/741.15|
|International Classification||E02D27/10, E04B1/00|
|Cooperative Classification||E04B1/0007, E02D27/10|
|European Classification||E02D27/10, E04B1/00B|