FR2850694A1 - Buried premise constructing method for construction field, involves dry assembling construction units and horizontal and vertical frames on spot, to maintain assembly in self-locking position using centripetal thrust of earth - Google Patents

Abstract

The method involves installing respective construction units of horizontal and vertical frames (5a, 5b, 20). The units and the frames are dry assembled on the spot without an interstitial binder. The two units of the vertical frame receive the centripetal support of compartments (11, 11) from the backside. The assembly is maintained in self-locking position by the centripetal thrust of the earth. The horizontal construction units support, at each of their two ends, the two vertical units at the two opposite sides. Each unit of the lower and upper horizontal frames receives support from an oval base and the top of the two vertical units, respectively. An independent claim is also included for a constructive kit for implementing the method.

Description

NEW STRUCTURE FOR LOCAL UNDERGROUND

  The present invention relates to the field of construction and building.

  More specifically, the invention relates to buried constructions which can provide a secure room with thermal and sound insulation annexed to a dwelling or main building on the surface. Such constructions are known in particular from European patent No 0 002 10 141 as from European patent No 0 128 989 in the name of the applicant.

  These documents describe structures and construction elements produced by prefabrication, easily assembled on site after appropriate preparatory earthworks for a receiving excavation, with a view to making the inhabitants of an annex space capable of being assigned to multiple activities or functions.

  The interest and the advantages of such constructions sought by the users are numerous and we will note in particular the possibility of erecting in under work, under a preexisting dwelling or local a structure and a volume of contention, for use of reserve or living space, accessible from the interior space of the initial room and without encroaching on the floor space or available volume, by application and execution of a vertical architectural design and realization in depth.

  The buried room of the type to which the invention relates has moreover protective properties against sources of external aggression since it is closed on itself being accessible only by a higher access in the form of a trap door capable of being equipped with effective anti-intrusion devices. This room isolated by the layer of soil from the outside environment has a constant temperature, which will be appreciated for the storage of guard drinks and more generally of long or medium-term food supplies; and in addition the room is soundproofed which can be a source of comfort for use in isolation room or (conversely) auditorium with high sound level.

  s The aforementioned applicant's European patent 0 128 989 thus allows the installation of a buried volume of sufficient dimensions to receive a minimum of accessories allowing a temporary stay assigned to various activities at the choice of the inhabitants usually staying on the surface in the main house. The present invention provides improvements to building elements capable of producing a buried annex space of this type.

  According to known techniques, in particular by this aforementioned European patent, the constructive elements put in place are assembled and sealed in their assembly position forming a peripheral wall which is closed on itself and which is also permanently secured to the lower and upper planes constituting respectively the floor and ceiling of the buried room.

  This technique of final assembly, sought to provide a necessary security in the solidity and the mechanical resistance of the room, can present negative aspects by its absence of potentialities of evolution. The surroundings or way of life of the inhabitants can change; for example with the occurrence of children inducing a search for an extension of the living space; the owners of the main house can be brought to move, and to sell the house without necessarily finding in the added value brought to the house the amount of their investment if the buyer attaches less price to comfort and interest of the buried annex room, definitively integrated into the dwelling.

  The invention aims to propose improvements in the structure and assembly of the constructive elements of buried annex premises of the specified type allowing subsequent development; the constructive elements of the invention by their configuration and method of assembly no longer require, as in the prior art, a final assembly by sealing on the spot. In a new and surprising manner, the invention makes it possible to use the centripetal thrust of the earths on the buried construction, of suitable shape and structure, to carry out dry mounting and self-locking of the assembly perfectly secure and freestanding.

  Due to a dry self-locking assembly, the elements making up the construction can subsequently be removed one by one, leading to disassembly of all or part of the construction with a view to an evolution or adaptation to a new volume configuration. . Likewise, the owner of the dwelling leaving the premises for a new dwelling can thus perfectly, after dismantling its construction according to the invention, take away the kit bringing these elements together with a view to its establishment in the new dwelling, whether it be 20 lacking, namely that the said owner even wishes to install in his new home a second buried construction.

  To this end, the invention relates to a method of constructing a buried room for use as a shelter, cellar or room annexed to a main building, of the type in which a plurality of prefabricated elements are produced, in particular lockers for general parallelepiped shape, load-bearing and open with their face oriented towards the center of the construction, these compartments are assembled to conform to a prismatic volume with an ovoid base, and the method is characterized in that 30 elements are put in place respectively horizontal and vertical reinforcement, said respectively load-bearing and reinforcement elements being assembled on site dry without intestinal binder, in a removable and reversible manner, the vertical reinforcement elements being arranged so as to receive by their rear face the centripetal support at least some of the said load-bearing compartments and the horizontal elements being arranged so as to undergo the application themselves at their ends ui vertical elements, respectively from the base of the vertical elements for a lower horizontal reinforcement element, and from the top of the vertical elements for an upper horizontal reinforcement element, the assembly being held in the self-locking position by the centripetal thrust lands.

  The construction according to the invention therefore comprises at least one self-locking framework disposed in a vertical plane and formed of: a) at least two vertical reinforcing elements, in particular two uprights, arranged in two opposite walls of long radius of curvature the construction i5 of ovodal section, so as to receive the support and the centripetal thrust of the compartments conforming said walls, these two uprights being arranged symmetrically along the major axis of symmetry of the horizontal ovodal section of the construction, b) an element d 'lower horizontal reinforcement, in particular a beam, running at floor level and joining by its two ends the base of the two uprights, each base of an upright being disposed in centripetal support against one end of said lower beam, and c) at least one upper horizontal reinforcement element, in particular a beam running at the level of the construction ceiling, and joining the tops of said mo ntants, these vertices being arranged in centripetal abutment against each of said ends of the upper beam, each frame encircling in a vertical plane the interior space of the construction.

  According to a preferred embodiment, the construction comprises two twin frameworks, each consisting of two uprights and two respectively lower and upper beams, these two frameworks being arranged symmetrically with respect to the minor axis of symmetry of the oval section of the construction.

  More particularly, the rear wall forming the vertical bottom of at least some 5 of said lockers is extended, beyond the side wall forming the short side of the locker, by a rim or shoulder capable of coming into lateral support on the neighboring box, two combined shoulders leaving between two juxtaposed lockers an empty space open towards the center of the construction, the superposition of these empty spaces from one row to the other 1o defining a vertical groove open over the entire height of the construction and accessible from the interior space and constituting a receptacle receiving a vertical reinforcing element formed of an amount of section corresponding with little play to the horizontal section of said housing.

  Thus the vertical uprights each disposed in one of said grooves are embedded in the thickness of the receiving wall, their face oriented towards the interior space of the construction flush with the outlet of the lockers constituting the walls of the latter, the rear face of the 20 uprights receiving the centripetal support from the adjacent compartments, the centripetal thrust received by the uprights being transferred to the base and to the top of the uprights on the lower and upper horizontal beams respectively and canceling out from one side to the other of the large axis of symmetry of the oval section of the construction.

  According to a variant, the lower horizontal frame consists of a base produced in several assembled sections and forming the floor of the construction, the uprights of quadrangular section being able to be engaged by their foot in the locking position in receiving recesses. provided in the appropriate places on said base.

  According to this variant, said base is formed of a plurality of prefabricated elements in the form of plates capable of resting on the bottom of the natural ground after earthworks, leveling and installation of a sealing pocket of known type, conforming , by their coplanar assembly interlocking with their edges, said ovodal base.

  According to yet another advantageous embodiment, the lower beams each joining two opposite symmetrical uprights, are embedded in a slab cast on site and conforming the floor of the construction.

  In particular, said slab, possibly reinforced and poured on site, is made from lean mortar to facilitate its possible eventual release.

  More particularly, the respectively upper and lower beams are of rectangular section and, being intended to work essentially in horizontal compression, are laid flat along their largest face.

  According to another variant embodiment of the invention, each upright blocked at its base against the end of a lower beam, may comprise at its top a structure forming an L-shaped console for the vertical support and the horizontal blocking of the beam constituting element 25 of upper horizontal frame.

  The uprights are preferably arranged symmetrically two by two on either side of the major axis of symmetry of the oval base of the construction, two twin uprights coming by their base in centripetal support on the ends of the same lower beam and by their apex bearing on the ends of the same upper beam and for this purpose the facing faces and coming into mutual support, respectively of the beam and the upright, are shaped to offer from an element a complementary bearing face of the face of the other element coming opposite.

  The invention also relates to an assembly or "kit" for the implementation of the specified method and for the production of an underground room as specified and comprising a) a plurality of load-bearing elements, such as lockers with curved bottom , of known type, and capable of being stacked by shaping the walls of a prismatic volume with an ovodal base, b) at least two and preferably four uprights capable of being opposed in pairs, facing each other symmetrically, being backed against the opposite walls of greatest radius of curvature (R) of the ovoid volume and c) at least two and preferably four beams respectively two lower beams 15 capable of being embedded in the floor of the room to receive the support of the base of two uprights opposite, and two upper beams able to be embedded in the ceiling of the room to receive the centripetal support from the top (20c) of two opposite uprights, d) the faces coming opposite and in contact with support , respectively of the ends 20 of the beams and of the ends of the uprights being of complementary profiles.

  Other characteristics and advantages of the invention will emerge further from the description which follows and which is given in relation to an embodiment of the invention presented by way of nonlimiting example and with reference to the appended drawings.

  In the drawings Figure 1 shows a top plan view of the base of the construction of the invention, seen along section 1-1 of Figure 2.

  FIG. 2 represents a view in vertical longitudinal section with partial cutaway, along the major axis of symmetry S, corresponding to the line Il-Il of FIG. 1.

  Figure 3 shows an exploded perspective view of an upright with partial view of the lockers held by the upright as well as the departure of the upper beam and the lower beam.

  FIG. 4 shows a front perspective view of a rack 10 belonging to the wall of greatest radius of curvature by its face open towards the interior of the construction.

  The structure will be better understood by evoking in chronological order the successive phases of the installation of the constructive elements and their mechanical and static cooperation.

  According to all of the figures, it can be seen that the construction (carried out from prefabricated constructive elements, assembled in a unitary and specific kit of the invention, bringing together all the components) can be carried out on site, by simple stacking, free support and mutual blocking; the elements are placed in a cavity previously practiced and prepared by earthwork and leveling of its bottom; this generally shaped cavity of a cylinder with an oval director will most often be made from a room in the house or the main room, after punctual destruction of the floor in front of the future excavation.

  The bottom of the cavity will receive a layer of cleanliness 1 poured on site or possibly, in wet ground, a layer of sand; layer 1 supports the bottom of a sealed pouch, 2 of conformation corresponding substantially to the future walls of the construction, in particular provided with vertical walls 2a closed on themselves and connected to a bottom 2b, the walls and the bottom constituting a perfectly waterproof continuous structure avoiding any infiltration of water from the surrounding terrain.

  On the bottom of the pocket 2b a protective felt 3 will have been deposited during the future installation of the construction elements any aggression detrimental to the continuous protection of the pocket and to its sealing.

  On this protective felt is placed the base to constitute the floor 5 of the construction. This base incorporates within it the lower beams, preferably two in number, 5a and 5b, being arranged symmetrically (see FIG. 1) along the small axis of symmetry s; these beams of rectangular section are laid being embedded in a reinforced slab 4 cast on site based on concrete or lean mortar in order to facilitate its release, this in the hypothesis considered by the present invention, of a subsequent disassembly and removal of construction. This slab 4 constituting with the beams 5a and 5b the base or floor 5 of the construction is poured leaving a reserve at the end of the beams to constitute the future housing 5d of the corresponding amount (Figure 3).

  Alternatively and depending on the particular case, the base could be prefabricated in several parts; the latter, assembled on site, would play the same role as the slab cast on site by incorporating the beams 5a and 5b. In addition and according to the view of FIG. 2, on the slab 25 cast on site 4 it is possible to add a facing paving, laid dry or removable, for example produced in several prefabricated parts 5c which will improve the aesthetics and the comfort from the local.

  The base forming the lower floor 5, of oval shape in plan, being in place can receive on its periphery the stack of stacked rows of racks, in particular with a curved vertical bottom; these, in order to produce a volume configuration of oval section, are of two types, namely the compartments 10 of smaller radius r and the compartments 11 of longer radius R. as seen in FIG. 1. In the example shown , two compartments 10 are juxtaposed on one side to conform the arc of a circle 5 of small radius (r) of the oval director and are opposed, along the small axis of symmetry s, to two other compartments 10 '. Between the two opposite arcs of small radius r are interposed the arcs of larger radius R formed on one side by the juxtaposed lockers 11 and on the opposite side with respect to the major axis of symmetry S by the juxtaposed lockers 11 ' .

  The compartments 10 and 10 ′ and 11 and 11 ′ respectively are arranged peripherally, their open face facing the interior of the room of the invention.

  FIG. 4 provides a perspective representation of a rack 11 or 11 of the type with a large radius of curvature R, shaped according to a pseudoparallelepiped whose long sides are curved according to an arc of a circle of radius R, corresponding to the arc of circle of long curved sides of the oval configuration of the construction. This box 11 therefore consists of a curved rear bottom 11a (along a cylinder segment of radius R), an upper plane ilb and two small radial sides lic; the upper plane It b constitutes a storage surface receiving the objects stored in the room; the front face remains hollow to allow access to the interior volume of the box. Extending the curved surface of the bottom i1 a, on the outside of the radial sides i1 c, there are provided on each side, having come from molding with the assembly and overflowing, two extensions or shoulders i1 d whose thickness is slightly greater than the thickness of the bottom wall 1la. As explained below, these shoulders are called upon to provide each of the 30 compartments 11 with a wall or abutment bearing on the upright which holds them.

  The racks can be stacked, the vertices llb all being in the high position; but it is possible, as shown in FIG. 3, for the two upper rows, to superimpose the compartments in opposition by their base, so as to constitute at this level a larger storage space in height.

  As illustrated in FIG. 3 and in FIG. 4, when two neighboring compartments 11 of the same level are joined, the juxtaposed ends of the two compartments abut by mutual support of the shoulders lld one against the other. Thus the two dihedral 1le (defined for each locker by the walls 11c and 11d) being conjugated face to face from one locker to the other, conform a capacity or empty space 11f substantially parallelepipedic and open by its front face on the center of the local; the function of this capacity, essential in the context of the implementation of the invention will be explained below.

  The racks 10 of smaller radius of curvature r are substantially homologous to the racks 11 described above, but do not have the side edges or shoulders 11 d, the racks 10 juxtaposed therefore rest against one another by their cheeks formed of their lateral faces (corresponding to the short sides 11 c of the compartments 11).

  The racks are arranged on the periphery of the base according to the arrangement shown in plan in FIG. 1 and the successive stacks are superimposed identically from one row to the other; it can be seen in the light of FIG. 3 that the empty capacities 11f (common to two compartments i1, or 11 ′, neighbors) are superimposed from one row to another and consequently define a vertical groove used for reception and dry mounting by simple fitting of a vertical reinforcing element 30 consisting of the upright 20.

  This amount is at its base blocked by its foot 20a engaged in a housing 5d, provided on the periphery of the base 5 and of dimensions and complementary shapes of the section of the foot 20a, (See Figure 3).

  Each housing 5d is provided at the base of the vertical groove formed by the stacking of the stepped capacities 11f; the vertical body of the upright, the foot of which is in place in its housing 5d, is then erected and inserted into the said groove; the horizontal section of the upright is equal to, or slightly less than the capacity section 11f, allowing free engagement with blocking of the upright in its vertical groove 10 receiving.

  The housing 5d receiving the base of the upright is arranged in the extension of the lower beam 5a, so that the upright 20, once in place by its base in this housing 5d, is locked against this beam; the end section of the beam may have a slight bevelled shoulder to present a bevelled transverse face in contact with support capable of receiving the face opposite the base 20a of the upright, the two complementary faces in mutual support allowing a full transfer of forces and thrusts, in particular of the upright 20, by its base 20a, against the end of the horizontal beam 5a.

  As seen in Figure 3, the upright once erected by its rear face 20b a support stop for the shoulders 11 coming from the lockers 11 paired, between which it is inserted.

  The height of the upright is provided so that its top 20c can come into slight overflow above the level of the upper plane formed by the tops 11b of the upper compartments belonging to the upper row, while the front face 20d of the overhanging part 20c of the amount 30 forms a bearing face coming to bear on the end of the upper beam 30 located opposite. This end being configured as previously exposed to present a transverse face complementary to the face 20 d of the apex projecting from the upright 20, these two faces coming into contact with the surface against surface contact.

  The amount 20, forming a vertical frame, therefore cooperates at its base with the horizontal frame formed by the lower beam 5a, 5b, embedded in the base 5, this amount cooperates at its top with the upper horizontal frame member consisting of the beam 30. The two lower and upper beams hold each upright in place, by simple support, the upright being blocked towards the center by the two beams and towards the rear by the shoulders 11 d from the lockers.

  As seen in FIG. 2, the beam 30 which is not (or not very) load-bearing and which works mainly in horizontal compression can be laid flat on its large face, resting on the slab ceiling, being embedded in the upper insulating layer. immediately under the floor of the upper room; occupying less space in height it avoids cutting the structure under the walking floor of the upper room.

  According to the figure in plan 1, each beam 30 (not shown in this figure) exactly overhangs the lower beams 5a and 5b and each upper beam 30 joins the vertices of two uprights 20 (opposite along the axis of symmetry S). The cooperation between the conformation of the compartments 11 and the vertical frame formed by the uprights 20, immobilized at their base and at their top, achieves, as previously pointed out, a self-stable structure resistant to the centripetal thrust of the earth. According to FIG. 1, this push (P) in the direction of the S axis meets the resistance of the two opposite votes (in plan) (formed by the two arcs of a circle of small radius r of the oval structure, respectively on the right. and on the left of figure 1) so that the thrust in one direction or the other of this axis is transmitted by the double vote and meets the resistance of the earth thrust in the opposite direction on the opposite vote (Q = 2 ).

  The thrust of the earths (P) along the minor axis s (at the top of FIG. 1) 5 is exerted on the external wall of the racks or boxes 11 and this thrust is transmitted to the uprights 10 by the shoulders in abutment lld over the whole wall height; the thrust is transferred by the uprights 20 on the horizontal reinforcing elements respectively the lower beam 5a, 5b and the upper beams 30 and therefore beyond on the 10 uprights of the wall opposite the first, on which the same antagonistic push (P), the reverse pushes balance each other thus ensuring the stability and the inertia of the construction (P = P ').

  The set of elements that can be mounted and juxtaposed dry with 15 self-locking of the assembly, therefore achieves a reversible structure; so that at any time all and each of the construction elements can be removed and the entire construction dismantled and easily reassembled on another site. The same process gives rise to perspectives of modulated development, of rearrangement by replacing some of the elements, possibly enlarging (the excavation having been after removal of the elements reworked accordingly).

  And like all of the constructive elements assembled according to the invention, the steps are laid and fitted together dry; under the same conditions, they may be deposited for disassembly for later re-use after reassembly.

  The curved conformation of the compartments or box is not essential here, said compartments must only comprise lateral edges converging towards the center of the construction, and being divided into two types of compartments whose angles of convergence of said lateral edges would be differentiated. Some racks have on the outer face of these lateral sides the overhanging shoulders towards the neighboring rack to conform the housing of the upright, each shoulder being shaped to present a face bearing on the rear face of the upright. s Each rack can have the shape of a trapezoid in plan, the large base of which would be occupied by the bottom facing outwards.

  The angular assembly of the compartments of two types distributed suitably (according to the plan of FIG. 1) would lead to the formation of a polygon with two axes of symmetry similar to the general oval shape of FIG. 1. The reinforcing elements in particular horizontal ones could have complex shapes, for example in X, the tops of the X coming to receive the top and bottom support of four vertical uprights.

  The foregoing description has only been given by way of non-limiting example 15 and it will be possible, from the elements of the invention, to produce various variant embodiments thereof.

Claims (11)

  1 - Method for constructing a buried room annexed to a main building, the method being of the type in which a plurality of prefabricated elements are produced, in particular lockers of generally parallelepipedal shape, load-bearing and open by at least one suitable face to be oriented towards the center of the construction, these compartments (11, 11 ', 10, 10') are assembled to conform the walls of a prismatic volume with an ovoid base, and the method is characterized in that one sets up respectively horizontal (5a, 5b, 30) and vertical (20) reinforcing elements, said elements, respectively supporting elements and reinforcing elements, being assembled on site dry without interstitial binder, in a removable and reversible manner , the vertical reinforcing elements (20) being arranged so as to receive by their rear face (20b) the centripetal support of at least some of said carrying compartments (11, 11 ') and the horizontal elements x being arranged so as to undergo themselves by each of their two ends the support of two vertical elements (20) belonging to two opposite walls, respectively an element 20 of lower horizontal frame (5a, 5b) receiving the support of the base (20a) of said two vertical elements (20), and an upper horizontal reinforcement element (30) receiving support from the top (20c) of the same two vertical elements (20), the assembly being held in position of self-blocking by the centripetal push of the earth.   2- Buried construction for use as a shelter, cellar or local annex to a main building, the construction being carried out by implementing the method according to claim 1, and being of the type consisting of a plurality of prefabricated elements, in particular of lockers (11, 11 ', 10, 10') of generally curved parallelepiped shape, load-bearing and open by their face oriented towards the center of the construction, these lockers being able to be assembled to conform a prismatic volume with an ovodal base and being associated with respectively horizontal (5a, 5b, 30) and vertical (20) reinforcement elements, and the construction is characterized in that said respectively load-bearing and reinforcement elements are prefabricated and 5 are assembled on site in a removable manner and reversible, the vertical reinforcing elements (20) being able to receive by their rear face the centripetal support of at least some of said compartments (11, 11 ') and coming themselves are supported by their top and their base on the horizontal elements respectively upper (30) and lower (5a, 5b), the assembly 10 being maintained in the self-locking position by the centripetal thrust of the earth.   3- Construction according to claim 2 and characterized in that it comprises at least one self-locking frame arranged vertically and formed of: a) at least two vertical reinforcing elements, in particular two uprights (20), each arranged in the one of the two walls of long radius (R) of curvature of the construction of oval section, so as to receive the support and the centripetal thrust of the compartments (11) conforming said walls, these two uprights being arranged symmetrically along the major axis of symmetry (S) of the horizontal ovodal section of the construction, b) a lower horizontal reinforcement element, in particular a beam (5a, 5b), running at the level of the floor (5) and joining at its two ends the base ( 20a) of the two uprights (20), each base 25 of an upright being disposed in centripetal abutment against one end of said lower beam, and c) at least one upper horizontal reinforcement element, in particular a beam (30) running at the level of the construction ceiling, and joining the vertices (20c) of said uprights (20), these vertices being placed in centripetal support against each of said 30 ends of the corresponding upper beam (30), each framework encircling in a vertical plane the interior space of the building.   4- Construction according to claim 3 and characterized in that it comprises a plurality of frames each consisting of two uprights (20) and two beams, respectively lower (5a) and upper 5 (30), these frames being arranged symmetrically relative to the minor axis of symmetry (s) of the oval section of the construction.   - Construction according to one of claims 2, 3 or 4 and characterized in that the rear wall forming the vertical bottom (lia) of some at least io of said lockers (11, 1l ') extends beyond the wall lateral (u1c) forming the small side of the locker, by a ledge or shoulder (1 d) able to come into lateral support on the neighboring box two combined shoulders leaving between two juxtaposed lockers an empty space (11f) open towards the center of the construction, the superposition of these empty spaces from one row to the other defining a vertical groove open over the entire height of the construction from the interior space and constituting a receptacle receiving a vertical reinforcing element formed of an amount (20) of section corresponding with little play to the horizontal section of said housing.   6 - Construction according to claim 5, characterized in that the vertical uprights (20) each arranged in one of said grooves (11 c) are housed in the thickness of the receiving wall, their side facing the interior of the construction flush with the outlet 25 of the lockers constituting the walls of the latter, the rear face (20b) of the uprights receiving the centripetal support from the adjacent lockers, the centripetal thrust received by the uprights being carried to the base (20a) and to the top (20c) amounts on the horizontal beams respectively lower (5a, 5b) and upper (30) and canceling from one side to the other of the major axis of symmetry (S) of the ovoid section of the construction.   7 - Construction according to one of claims 3 to 6 above and characterized in that the lower beams (5a, 5b) each joining the bases (20a) of two opposite symmetrical uprights (20), are 5 embedded in a slab (4) pouring on site and conforming to the construction floor, the slab reserving at the end of the beams (5a, 5b) a housing (5d) for the engagement of the base (20a) of the corresponding amount (20).   8 - Construction according to claim 7 and characterized in that said slab (4), optionally reinforced and poured on site, is made from lean mortar to facilitate its possible eventual release.   9 - Construction according to one of claims 7 or 8 above and 15 characterized in that the respectively upper (30) and lower (5a, 5b) beams are of rectangular section and, being intended to work essentially for horizontal compression , are laid flat respectively inside the slab (4) for the lower beam (5a, 5b) and above the ceiling for the upper beam (30).   10- Construction according to one of claims 3 to 9 above and characterized in that the facing faces and coming into mutual support, respectively of the beam (5a, 5b, 30) and the corresponding amount (20), are shaped to offer from one element a bearing face 25 complementary to the face of the other element coming opposite.   11 - Construction according to one of claims 3 to 10 above, characterized in that the uprights (20) four in number are arranged symmetrically two by two on either side of the major axis of symmetry (S) of the ovodal base of the construction, two opposite twin uprights coming by their base (20a) in centripetal support on the ends of the same lower horizontal beam (5a, 5b) and by their top (20c) in support on the ends d 'A single upper horizontal beam (30), each set of two uprights and two beams in mutual support conforming a quadrandular frame assembled 5 without binder being maintained and immobilized reversibly by centripetal pressure of the earth and encircling in a vertical plane the interior space of the building.   12 - Set of parts forming a constructive "kit", for implementing the method according to claim 1 with a view to producing a buried room in accordance with one of claims 2 to 11, characterized in that it comprises a) a plurality of load-bearing elements, such as racks (11, 11 ', 10, 10') with curved bottom, of known type, and capable of being stacked by conforming the walls of a prismatic volume with an oval base , b) at least two and preferably four uprights (20) able to be opposed in pairs by facing each other symmetrically, being leaned against the opposite walls of greater radius of curvature (R) of the ovodal volume and c) at least two and preferably four beams respectively two lower beams (5a and 5b) able to be embedded in the floor (5) of the room 20 to receive the support of the base (20a) of two uprights (20) opposite, and two beams upper (30) able to be embedded in the ceiling of the room to receiving the centripetal support from the top (20c) of two opposite uprights, d) the faces which must come opposite and in contact with support, respectively of the ends of the beams and of the ends of the uprights being of complementary profiles.