WO2010130454A2

WO2010130454A2 - Foundation cage, foundation, and process for forming a foundation

Info

Publication number: WO2010130454A2
Application number: PCT/EP2010/002958
Authority: WO
Inventors: Erwin Frey
Original assignee: Haus und Holzbau im Allgäu GmbH
Priority date: 2009-05-13
Filing date: 2010-05-13
Publication date: 2010-11-18
Also published as: EP2430245A2; EP2430245B1; DE102009021143A1; WO2010130454A3

Abstract

The invention concerns a foundation cage (10) for supports (30) or pillars, in particular for prefabricated buildings. The foundation cage (10) comprises an outer reinforcement (11) formed as a hoop, reinforcement struts (12) disposed, specifically welded or screwed, in the outer reinforcement (11), and a holder (14) disposed, in particular welded, in the foundation cage (10) for the lower end of a support (30) or a pillar. The invention further concerns a foundation for supports or pillars with a foundation cage, as well as a method for forming a foundation for supports (30) or pillars, which involves steps of mounting a foundation cage (10) on a granular subbase, aligning the foundation cage (10), and filling the foundation cage (10) with concrete.

Description

description

Foundation basket. Foundation and method for forming a foundation

The invention relates to a foundation basket with the preamble features of claim 1, a foundation with the preamble features of claim 10 and a method for forming a foundation with the features of claim 13.

Prefabricated buildings with columns or pillars usually have these pillars or pillars supporting foundation. The foundation can be constructed, for example, as a single or strip foundation or, if necessary for structural reasons, as a plate or Sohlfundament.

In the construction of halls in timber frame construction, individual foundations for columns or pillars of the building are usually used. These foundations are built on a layer of cleanliness and are statically adapted to the calculated loads of the prefabricated building. In order to erect conventional single foundations, usually extensive formwork structures are to be created, into which a reinforcement for the foundation is subsequently introduced. The formwork structure is finally filled with concrete. After curing, the formwork is dismantled and the building erected on the foundation.

Another possibility to form a hall is the use of precast concrete parts. These are delivered to the construction site and set up and aligned there on the cleanliness course. A disadvantage of the former possibility for creating a foundation is that the described method is particularly time-consuming and therefore requires a precisely coordinated planning of the individual sections. In addition, the formation of the formwork is associated with a considerable amount of material and the use of additional equipment that complicates the formation of the foundation in addition. The speedy construction of the prefabricated building is therefore difficult to carry out.

Although the second possibility, ie the use of prefabricated components, permits a relatively rapid formation of the foundation, the transport of the prefabricated components to the construction site is particularly cumbersome due to the high weight of the components, since special transport vehicles have to be used here. In addition, on the construction site, the use of heavy equipment is necessary to arrange the prefabricated components in the appropriate places of the foundation and then align. The high Manufacturing and transport costs for prefabricated components also increase the total cost of the building to a significant extent.

Object of the present invention is therefore to provide a foundation for columns or pillars, especially of prefabricated buildings available, which can be created very quickly and easily and is inexpensive to create.

This object is achieved by a foundation basket for columns or pillars according to claim 1, a foundation according to claim 10 and a method for forming a foundation according to claim 13. Advantageous developments of the invention are the subject of the dependent claims.

The invention provides a foundation basket which substantially facilitates the formation of a foundation for columns or pillars. In particular, the foundation basket is suitable for the fast and cost-effective creation of foundations for columns and pillars of prefabricated buildings, and in particular of halls in timber frame construction. The static requirements that are placed on such halls in timber frame construction, due to the relatively low weight of the building parts no massive foundations. It often turn out to be foundations as the foundation of choice.

The foundation basket according to the invention is characterized in that a trained as a hoop or frame outer reinforcement is provided. In this outer reinforcement are in particular welded or screwed reinforcement struts and arranged in the foundation basket, in particular welded receptacle. In this the lower end of the column or the pillar of the finished building is used. The external reinforcement gives the size of the foundation and is chosen taking into account the static requirements. Here, by changing the diameter and / or the shape of the hoop or frame, the size of the foundation formed can be adjusted to the calculated static requirements. The reinforcing bars arranged in the outer reinforcement give additional stability to the foundation basket and the finished foundation and, moreover, prevent the frost or the frame from being deformed when filling the foundation basket with concrete due to the inflow of concrete. By the reinforcement struts, in particular their number and orientation, an adaptation of the foundation to the static load can be performed by the prefabricated building.

It is considered particularly advantageous if the hoop or frame is formed of sheet metal. In particular, the use proves to be particularly durable in this context "

of sheet steel to form the hoop or frame. The use of a sheet metal or sheet metal frame also offers the opportunity to adjust the size of the foundation basket to the particular required dimensions of the foundation basket in a simple and fast manner. Of course, the invention is not limited to a cylindrical design of the foundation basket or the finished foundation. In addition, it is also possible to form elliptical, oval and polygonal foundation baskets depending on the hoop or frame used. For this purpose, the sheet metal rim or frame is deformed accordingly with or without Temperaturbeaυfschlagung The formation as well as the adaptation of the foundation basket or especially the outer reinforcement can also be made directly at the site. The outer reinforcement is delivered for this purpose in the form of a band or tape sections at the site. The ends of the band or the band sections are then flush or overlapping laid on or superimposed and welded or screwed, which of course also a parallel welding and screwing as well as a riveting of the ends in the formation of the outer reinforcement is possible.

The reinforcing struts, which give the foundation basket further stability, are arranged in a favorable manner crosswise in the outer reinforcement. By the crosswise arrangement of the reinforcing bars, the stability of the foundation basket is increased because the deformation of the outer hoop or the outer reinforcement is prevented in several directions. In addition to the crosswise arrangement of the reinforcing struts of course, a radial arrangement of the reinforcing struts is conceivable. It is recommended to arrange the reinforcing struts one above the other in several levels in the outer reinforcement.

It proves to be particularly advantageous if the receptacle is designed as a quiver. In this quiver can after forming the foundation in a simple and fast way, the support or the pillar for which the foundation was made, used and thus the prefabricated building to be built. If the support or the pillar is designed as a tube, a pin projecting in the direction of the support or the pillar can be arranged in the quiver in the manner of a bushing. The pin is inserted when inserting the support or the pillar into the quiver in the pipe end and fitted into the support or the pillar. The pin can be made substantially cylindrical or tuned to the shape of the support or the pillar.

Preferably, the receptacle extends over the entire height of the foundation basket, can project beyond the upper edge of the outer reinforcement or flush with this. The receptacle is preferably between the intersecting reinforcing struts of the inner Reinforcement of the foundation basket used and welded to the reinforcing struts at least at their crossing points. An even better connection between the receptacle and the reinforcing struts results when the reinforcing struts are arranged in several planes, and in particular substantially horizontally aligned in the outer reinforcement and therefore the receptacle connected to several of the reinforcing struts, in particular welded. In addition to the welding of the recording with the reinforcement struts and the use of a clamping or screw connection for arranging the recording in the foundation basket or for connection to the reinforcement struts is possible.

In order to carry out a particularly simple and fast installation of the foundation baskets and their easy alignment, it is considered particularly recommendable if anchor points are provided on the receptacle, the outer reinforcement and / or the reinforcement struts for the arrangement of a support device for the foundation basket.

The foundation basket according to the invention ensures a particularly quick and easy formation of a foundation for the columns or pillars, in particular for prefabricated buildings. The foundation basket initially consists only of the outer, in particular mature or frame-like reinforcement and the reinforcement struts arranged therein and the recording. Compared with prefabricated components, this foundation basket according to the invention has a particularly low weight and can therefore be delivered in large numbers and particularly easily at the construction site for the prefabricated building or only from individual parts. Due to its low weight, the foundation basket enables installation without the use of heavy equipment. In addition, the alignment of the foundation baskets before the backfilling with concrete and the formation of the foundation without the use of, for example, cranes is possible. The lightweight construction allows for a correction of the position of the finished foundation until shortly before filling the foundation basket with concrete.

The invention further comprises a foundation for columns or pillars, in particular prefabricated buildings with a foundation basket as described above. In this case, it proves to be particularly favorable if the foundation is formed by filling the foundation basket with in-situ concrete. The backfilling on site, ie at the site of the prefabricated building, has a number of advantages over the use of precast concrete components as well as conventional foundation formation using formwork. The foundation according to the invention can thus be formed particularly easily and quickly and therefore proves to be particularly cost-effective. Being particularly favorable is considered when at the top of the foundation Muffs are used. These sleeves allow the subsequent screwing of the support pillar or the support of the prefabricated building or the arrangement of Rieht- or support struts on the supports or pillars.

The invention further provides a method for forming a foundation for columns or pillars, in particular for prefabricated buildings. The method according to the invention comprises several steps. First, a foundation basket with formed as a hoop or frame outer reinforcement and arranged in the outer reinforcement reinforcing struts and a centrally arranged in the foundation basket receptacle for the support or the pillar on a clean sheet. After this placement of the foundation basket, its orientation and alignment is done filling the foundation basket with concrete. In this case, the use of in-situ concrete is particularly suitable. The placement and alignment of the foundation basket can be due to the ease of execution of the foundation basket without the aid of heavy equipment, with smaller foundation baskets, for example, manually by one or two workers done. It follows that the final foundation or its position is determined only after filling the foundation baskets with concrete and this particular Ortbeton. Of course, it is possible to deliver the foundation baskets, which serve to form the foundation, already finished at the construction site and then set up at the locations defined for the foundation position on the cleanliness layer. In addition, however, it is also considered to be recommended if, in addition to the manufacturer's completion of the foundation basket formation of the inner reinforcement of the foundation basket, d. H. the introduction of reinforcing struts and possibly the inclusion in the outer reinforcement takes place only at the construction site. Accordingly, the originally first process step is modified such that first the tires or frames forming the outer reinforcement are brought to the final installation location of the foundation and only then a welding or screwing in of the inner reinforcement, i. H. the reinforcement struts takes place. After arranging the reinforcing struts ultimately the introduction or the insertion of the recording and the connection with the reinforcement struts or the foundation basket can be done. This type of procedure further increases the flexibility in creating the foundation.

In an advantageous development, the method according to the invention additionally comprises the steps described below. After placing the foundation basket and its orientation, a centering hole is introduced into the cleanliness layer. This hole is located centrally under the foundation, or under the recording. After introduction of the centering hole, a support element is inserted into the receptacle, the one with the Centering bore has aligned through bore. This support element prevents deformation of the recording by the filled into the foundation basket concrete. The foundation basket is determined after the insertion of the support element by an anchor pin passing through the support element is inserted through the support member in the center hole in the cleanliness layer. Through the anchor pin a provisional determination of the foundation basket is achieved so that its position can not be changed by the filled concrete. We recommend a precise positioning, for example by using a suitable adjustment center! or perform procedures prior to finally setting the foundation. In order to prevent deformation of the receptacle during the filling of the concrete in the foundation basket, the support element is preferably formed as a block of a solid material, thereby having the internal dimensions of the receptacle. The support member can thus be positively inserted into the receptacle and removed after filling the foundation basket and curing of the filling material again from the recording.

It is regarded as favorable if, after filling of the foundation basket and after hardening of the filled concrete, a removal of the anchoring pin and subsequently of the supporting element takes place. After removal, the free end of the lower end of a support or a pillar, which may be formed, for example, as a T or double T-beam, used and built the building, for example, a hall in timber frame design. After inserting the support or the pillar and its orientation, the backfilling of the recording is carried out with a filling material, which in particular offers concrete here. The backfilling of the receptacle ultimately determines the position and orientation of the column or pillar. It proves to be advantageous if, before or after the hardening of the concrete, sleeves and in particular threaded sleeves are used in the foundation. This can be done by using the sleeves already shortly after filling the foundation basket with concrete at the corresponding positions in the foundation. In addition, it is of course also possible that holes are introduced into the foundation and the sleeves are used in these holes. Also considered to be favorable when an adjustment device is provided for the support or the pillar. Alignment of the columns or pillars of the entire building by means of suitable, for example GPS-supported, surveying methods can take place via this adjusting device. A preferred embodiment of the method provides that the adjusting device has a fundamentally parallel leg, which serves as a surveying aid in the alignment of the columns or pillars and also as a receptacle or holder for adjustment aids, such as washers or the like. It also proves advantageous in this context if the leg has a bore "

has, on the additional adjustment of the support or the pillar takes place after adjustment on the foundation. This determination can preferably be carried out by connecting the leg to the foundation by screwing or other fixative in a suitable manner. The used can then intervene in the previously introduced in the foundation sleeves.

An advantageous development of the method according to the invention provides that a directional brace is used to align the support or the pillar. This runs between the foundation and the pillar. The straightening brace is, for example, fixed on the foundation side in the sleeve introduced into the foundation. The determination of the brace can be done by screwing into the threaded sleeve.

Further advantages, features and features of the invention will become apparent from the following description of preferred, but not limiting embodiments of the invention with reference to the schematic drawings. It shows:

Fig. 1 shows a preferred embodiment of the foundation basket according to the invention in

Top view,

Fig. 2 shows a preferred embodiment of the foundation with inserted pillar, and Fig. 3 shows a further preferred embodiment of the foundation according to the invention, in each case in side view.

Fig. 1 shows a foundation basket 10 according to the invention in plan view. This foundation basket 10 is suitable for forming a foundation 20 (cf., FIGS. 2 and 3) for a support 30 of a prefabricated building, for example a hall in timber frame construction. The foundation basket 10 has a cylindrical shape. The foundation basket 10 is formed by an outer reinforcement 11, which is formed in the embodiment as a tire made of sheet steel. The outer reinforcement 11 predetermines the final formation of the foundation 20. However, the design is not limited to the cylindrical shape. Also possible is the formation of the foundation basket 10 with, for example, prismatic, oval or rectangular outer reinforcement 11. The height of the foundation 20 (see also FIG. In the outer reinforcement 1 1 reinforcing struts 12 are arranged to stabilize the foundation basket 10 and to adapt the foundation 20 to the specifications by the statics of the finished building. The reinforcing struts 12 are formed of structural steel and are connected to the outer reinforcement 11, for example, welded in this. In addition to the welding of Reinforcing struts 12 and outer reinforcement 11 also screwing the reinforcing struts 12 in the foundation basket 10 is possible.

The reinforcing bars 12 not only reinforce the foundation 20, but also prevent deformation of the outer reinforcement 11 of the foundation basket 10 when filling the foundation basket 10 with concrete. This backfilling with concrete takes place after setting up the foundation basket 10 on a cleanliness layer (not shown), which represents the lowest layer of the foundation of a prefabricated building. The foundation basket 10 is hereby placed directly on the cleanliness layer, then aligned, fixed in position and then filled with concrete. After hardening of the concrete, the further construction of the prefabricated building can take place. The outer reinforcement 11 of the foundation basket 10 is left in place.

The reinforcing struts 12 have a plurality of crossing points 13 and define a centrally located in the foundation basket 10 position of the receptacle 14 for the subsequent arrangement of a support 30. The receptacle 14 is inserted between the intersecting reinforcing struts 12 and point-connected thereto. The connection between reinforcing struts 12 and receptacle 14 can be done by welding or using clamping screws or clamps.

During the formation of the foundation 20, ie during the filling of the foundation basket 10 with concrete and the hardening of the concrete, an inner supporting element 15 (indicated by hatching in FIG. 1) is inserted into the receptacle 14, which serves to deform the receptacle 14 during filling prevents the concrete in the foundation basket 10. After aligning the foundation basket 10, the introduction of a centering hole 16 is first carried out in the cleanliness layer. The center hole 16 is centrally provided below the foundation basket 10 and arranged in the foundation basket 10 receptacle 14. After inserting the centering hole 16, the insertion of the inner support member 15 takes place in the receptacle 14. The inner support member, which consists of a solid material, for example made of wood or plastic .weisweisweiser an aligned with the center hole 16 inner recess 17. Through this inner recess 17, an anchoring pin 18 can be inserted into the center hole 16. By introducing the anchoring pin 18, the final determination of the foundation basket 10 in the predetermined position. After this determination of the foundation basket 10, this is filled with concrete. The anchoring pin 18, which projects through the foundation basket 10 and is fixed in the cleanliness layer, prevents a displacement of the foundation basket 10 in this concrete filling. After the concrete has hardened, the anchoring pin 18 is removed. A Movement of the foundation basket 10 is no longer possible. After the anchoring pin 18 has been removed, the inner support member 15 can be removed from the receptacle 14. In the now free receptacle 14, a support 30 can be used and aligned. After inserting the support 30 into the receptacle 14 and its orientation, the setting of the support 30 by filling the receptacle 14 with concrete takes place. The lower end of the support 30, which is inserted into the receptacle 14, is designed for example as a T or double T-beam and thus leaves enough space for the filler. It is conceivable, of course, the same shape with the receptacle 14 execution of the lower end of the support 30. Thus, a positive insertion of the support 30 made in the receptacle 14.

With the foundation basket 10 shown in FIG. 1, the simple and rapid formation of a foundation 20 for receiving a support 30 is possible. The foundation basket 10, which is lightweight prior to filling with concrete, can be easily positioned and aligned on a clean sheet without the use of a lifting device. The formation of the foundation 20 is carried out after aligning and fixing the foundation basket 10 by filling the foundation basket 10 with concrete. There is thus a lack on the one hand, the time-consuming construction of formwork as is the case with conventional foundations 20, on the other hand, the need for the delivery of large volume and thus heavy precast concrete parts.

Fig. 2 shows a preferred embodiment of the foundation 20 according to the invention in side view. The foundation 20 has reinforcing struts 12 in the interior, which are arranged horizontally in the foundation 20. The reinforcing struts 20 are provided in two layers in the foundation. In the arranged in the foundation 20 receptacle 14 has already been used in the embodiment, the lower end 31 of a support 30 for a prefabricated building. The support 30 consists on the one hand of a wooden post 38, which merges in its fundamental extension in a T-beam 39. This T-beam 39 is inserted into the receptacle 14 and fixed in this by filling with concrete. Before filling the receptacle 14 with concrete, the support 30 is initially aligned. The lower end 31 of the support 30 introduced into the receptacle 14 has a straightening angle 32 which is used for the adjustment of the support 30. For leveling this example Justierunterlagen 33 can be pushed under the horizontal leg 34 of the directional angle 32. The leg 34 additionally has a bore, via which a further determination of the support 30 on the foundation 20, for example by means of screws, bolts or pins can be done. Arranged on both sides of the lower end 31 of the support 30, the foundation has brackets 19, which are connected to the reinforcing struts 12 in the interior of the foundation basket 10. These brackets 19 served as the foundation basket 10 mounted support device and facilitated the transport and alignment of the foundation basket 10 prior to filling with concrete. In the further orientation of the prefabricated building, the bracket 19 can be used as anchor points for an outer lining of the building. In the embodiment of FIG. 2, the foundation 20 shown additionally has sleeves 21, which are arranged in the region of the circumference of the foundation 20. These sleeves 21, which were subsequently introduced into the foundation 20 in the exemplary embodiment, serve to receive screws or to fix additional supporting or aligning struts 22 (compare FIG. 3). In addition to a subsequent contribution, the arrangement of the sleeves 21 can of course also be done before filling the foundation basket 10 with concrete. The sleeves 21 can be connected, for example, with the reinforcing struts 12. Also conceivable is the execution of the sleeves 21 as the entire foundation basket projecting threaded sleeves.

FIG. 3 likewise shows a side view of a further embodiment of the foundation 20 according to the invention. Also in the exemplary embodiment of FIG. 3, the lower end 31 of a support 30 has already been inserted in the foundation 20 or in the receptacle 14 provided therein. For final fixing and alignment of the support 30, a directional brace 22 extending between the support 30 and the top 23 of the foundation 20 has been attached. This straightening bar 22, which has a set screw 24, is used to adjust the support 30 before its final determination. To adjust the support position, the support 30 has a directional angle 32. This straightening angle 32 can be underlaid in the course of adjustment with Justierunterlagen 33 and thus allows the fine alignment of the support 30. Both in the embodiment of FIG. 2 and in the embodiment of FIG. 3, the receptacle 14 is formed as a quiver. This quiver is connected to the reinforcing struts 12 at several points of intersection. The reinforcing bars 12 are arranged crosswise in the outer reinforcement 1 1 of the foundation basket 10 and thus form a grid in the interior of the foundation basket 10. In addition to the grid-like arrangement of the reinforcing struts 12 within the outer reinforcement 11 and a radial arrangement of the reinforcing bars 12 is conceivable. Also, in the arrangement of the reinforcing struts 12 can be deviated from the orientation of two or more levels. It is thus possible, for example, the connection of a point 35 at the upper end 36 of the outer reinforcement 11 with a point 35 on the foot 37 of the outer reinforcement 11 by the reinforcing struts 12 conceivable. The reinforcement bars 12 are used in addition to the fixation of the receptacle 14 as a holder for a bracket 19, which simplifies the handling or the displacement of the foundation basket 10. Furthermore, the connection of sleeves 21 with the reinforcement struts is possible. The reinforcing struts 12 cause reinforcement of the formed foundation 20 and also prevent deformation of the foundation basket 10 when filled with concrete. The invention is not limited to a foundation basket 10 with a single receptacle 14. Rather, it is also possible that a plurality of receptacles 14 are arranged side by side in a foundation basket 10. The foundation basket 10 can be sized larger for this purpose according to the static requirements. Thus, the foundation basket 10 according to the invention also enables the rapid, simple and cost-effective formation of strip foundations. The height of the outer reinforcements 11 indicates the ultimate height of the foundation 20. In adaptation to the static requirements can thus be carried out on a change in the hoop or frame height of the outer reinforcement 11, an enlargement of the foundation 20.

The foundation baskets 10 may be delivered in parts to the construction site and then connected in place to the foundation basket 10. Here, the outer reinforcement can be delivered as a steel strip or steel strip section. The ends of the steel strip or the steel strip section are then first connected, for example, welded, bolted, riveted or possibly also glued. The outer reinforcement 11 is then placed on a cleanliness layer at the location of the foundation and the reinforcing struts 12 are then welded or screwed inside the outer reinforcement. Finally, at the points of intersection 13 of the reinforcing struts 12, the receptacle 14 or the receptacle 14 are inserted and possibly also connected to the reinforcing struts 12. Only after the completion of the foundation basket 10 is the backfilling of the foundation basket 10 with concrete and thus the formation of the foundation 20. With the construction site completion of the foundation basket 10 can be reacted flexibly to changes in the plan when creating the prefabricated building.

LIST OF REFERENCE NUMBERS

10 = foundation basket

11 = outer reinforcement

12 = reinforcing braces

13 = crossing point

14 = recording

15 = support element

16 = center hole

17 = recess

18 = anchoring pin

19 = bracket

20 = foundation

21 = sleeve

22 = straightening strut

23 = top

24 = adjusting screw

30 = support

31 = lower end

32 = straightening angle

33 = adjustment pad

34 = legs

35 = point

36 = upper end

37 = foot

38 = wooden posts

39 = T-beam

Claims

claims

1. foundation basket (10) for supports (30) or pillars, in particular of prefabricated buildings, characterized in that the foundation basket (10) an outer reinforcement (11), in the outer reinforcement (11) arranged, in particular welded or screwed reinforcement struts (12 ), and at least one in the foundation basket (10) arranged, in particular welded

Receiving (14) for the lower end (31) of a support (30) or a pillar.

2. foundation basket (10) according to claim 1, characterized in that the outer reinforcement (11) is designed as a hoop or frame, in particular made of sheet metal.

3. foundation basket (10) according to claim 1 or 2, characterized in that the hoop or frame has a substantially round, oval or polygonal shape.

4. foundation basket (10) according to one of claims 1 to 3, characterized in that the reinforcing struts (12) are arranged crosswise in the outer reinforcement (11).

5. foundation basket (10) according to any one of claims 1 to 4, characterized in that the receptacle (14) inserted between intersecting reinforcing struts (12) and welded to the reinforcing struts (12).

6. foundation basket (10) according to one of claims 1 to 5, characterized in that the receptacle (14) is formed as a quiver.

7. foundation basket (10) according to any one of claims 1 to 6, characterized in that extending the receptacle (14) over the entire height of the foundation basket (10) and the upper edge of the outer reinforcement (11) surmounted or flush with this.

8. foundation basket (10) according to one of claims 1 to 7, characterized in that the reinforcing struts (12) in one or more planes, in particular aligned substantially horizontally, in the outer reinforcement (11) are arranged.

9. foundation basket (10) according to one of claims 1 to 8, characterized in that anchor points for the arrangement of a support device for the foundation basket (10) are provided on the receptacle (14), the outer reinforcement (11) and / or the reinforcing struts (12).

10. Foundation (20) for columns or pillars, in particular of prefabricated buildings, with a foundation basket (10) according to one of claims 1 to 9.

11. foundation (20) according to claim 10, characterized in that the foundation basket (10) is filled with in-situ concrete.

12. foundation (20) according to claim 10 or 11, characterized in that at the top of the foundation (20) sleeves (21), in particular threaded sleeves are used.

13. Method of forming a foundation (20) for supports (30) or piers, in particular for prefabricated buildings, comprising the steps:

Mounting a foundation basket (10) with an outer reinforcement (11) configured as a hoop or frame, reinforcing struts (12) arranged in the outer reinforcement (11) and a lower end receptacle (14) arranged centrally in the foundation basket (10) ) a pillar (30) or pillar on a clean sheet,

- Aligning the foundation basket (10), and

- Filling the foundation basket (10) with concrete, in particular in-situ concrete.

14. The method according to claim 13, characterized in that the reinforcing struts (12) and / or the receptacle (14) arranged on the manufacturer side or at the construction site in the outer reinforcement (11), in particular welded and / or screwed.

15. The method according to claim 13 or 14, characterized in that before or after the curing of the concrete sleeves (21), in particular threaded sleeves in the top (23) of the foundation (20) are used.

16. The method according to any one of claims 13 to 15, further comprising the steps-.

- inserting a center hole (16) in the cleanliness layer after aligning the foundation basket (10), wherein the center hole (16) is arranged centrally under the foundation basket (10) or the receptacle (14), Insertion of an inner support element (15) in the receptacle (14), wherein the inner support member (15) with the centering bore (16) aligned through recess (17), and

Fixing the foundation basket (10) by introducing an anchoring pin (18) passing through the inner support element (15) into the centering bore (16).

17. The method according to claim 16, characterized in that the inner support element (15) is formed as a block of a solid material.

18. The method according to claim 16 or 17, characterized in that after filling of the foundation basket (10) and after curing of the concrete removal of the anchoring pin (18) and the inner support element (15) and the insertion of the lower end (31). a support (30) or a pillar into the receptacle (14).

19. The method according to claim 18, characterized in that an alignment of the support (30) or the pillar and the subsequent backfilling of the receptacle (14) with a building material, in particular with concrete takes place.

20. The method according to claim 19, characterized in that the lower end (31) of the support (30) or the pillar as a T or double-T-carrier (39) is formed and an adjusting device for the support (30) or the Having pillars.

21. The method according to claim 19 or 20, characterized in that the adjusting device comprises a foundation parallel aligned leg (34) having a bore and after adjusting the support (30) or the pillar an additional definition of the support (30) or the pillar on Foundation (20) via the leg (34).

22. The method according to claim 21, characterized in that the leg (34) connected via the bore to the foundation (20), in particular screwed.

23. The method according to any one of claims 15 to 22, characterized in that between the support (30) or the pillar and the foundation (20) extending straightening strut (22) is provided and the straightening strut (22) on the foundation side in the sleeve (21 ) is determinable.