Abstract:
A method and a device serve for the installation of a false floor above a bare floor include false-floor supports that are placed in a regular grid pattern on the bare floor, on which floor panels are arranged alongside one another in rows. Mounting positions are determined for the false-floor supports and the false-floor supports to be installed are correspondingly positioned. Furthermore, a mounting plane lying at a mounting height is at least partially determined preferably by using laser devices. The false-floor supports to be installed are then positioned relative to the mounting plane. Pedestals, which are composed of solidifying pedestal material that is binding to the bare floor and which project beyond the mounting plane, are provided at the mounting positions before, during or after the positioning of the false-floor supports. The false-floor supports are then held each in the respective pedestal until the latter has solidified.

Description:
FIELD OF THE INVENTION 
     The invention relates to a false floor as well as to a method and a device for the installation of this false floor. 
     BACKGROUND OF THE INVENTION 
     False floors are often installed in large modern buildings. As described in EP0309399A1, a false floor consists of floor panels, which are mounted on false-floor supports, that are adjustable in height and that are placed on the building floor, i.e. on the bare floor of the building. Hence, a small space results between the bare floor and the false floor, in which media lines of all kinds, such as water lines, gas lines and electrical cable, can be installed in the shortest distances, wherefore a detailed planning of the installation is not required. 
     EP0309399A1 further discloses a false-floor support with a foot member and a base plate, on which a support tube stands vertically, and with a head member with a holding cone, on which corners of a false floor panel are placed. The foot member and the head member are connected in such a way by screw elements, that a desired height of the false-floor support can be adjusted. 
     These false-floor supports exhibit disadvantages in the event that the bare floor is uneven. Then undesirable inclinations of the false-floor supports result. Due to the inclination of the holding cone the supported corners of the floor panels exhibit different heights a, wherefore irregular changes in height occur at the surface of the false floor. 
     A bothersome unevenness of the bare floor was initially corrected by outpouring the area of support of the foot member or by applying wedges below the foot member. However with this measure, a sufficiently precise alignment of the false-floor supports could be reached only with considerable efforts. 
     For solving this problem, EP0309399A1 proposes a false-floor support that comprises a support dish with adjustable inclination that is provided with an enclosed spherically domed inner member, which can be clamped between a spherically-domed ring-dish and a spherically-domed pressure plate after the inclination has been adjusted. 
     EP0479720A1 discloses the false-floor support shown below in  FIG. 1 . This false-floor support comprises a foot member  220  with a base plate  221 , which via a connection device  223  is elastically connected to a foot tube  222 , which can vertically be aligned to the base plate  221 . The foot tube  222  can therefore be inclined by a specific angle relative to the base plate  221 , in order to compensate the unevenness of the floor. In the event that a larger unevenness cannot be compensated by means of the connection device  223 , a pedestal  310  is provided below the base plate  221 . A head tube  212 , which comprises a head member  210  with a head plate  211 , is telescopically entered into the foot tube  222 . The head member  210 , which is supported by a spring  230 , is movable towards the foot member  220  until a screw stop  240 , which is connected to the head tube  212  contacts the foot tube  222 . The screw stop  240  is held by a thread and can be set to a desired height. 
     Known installations of a false floor are done step-by-step, floor panel by floor panel. I.e., when installing the false floor, false-floor supports are sequentially mounted and adjusted. Afterwards floor panels are mounted. After mounting each floor panel the alignment is measured with a water-level and the false-floor support is adjusted. In this way, the false floor is extended step-by-step, whereby the individual steps of mounting a floor panel and adjusting a false-floor support are repeated alternatingly. In total a considerable installation effort results. It must further be noted that the floor panels are typically removed again after the false floor has been installed, so that the concerned personnel can install media lines, e.g. electrical cables, on the bare floor. After installing the media lines the floor panels are mounted on the false-floor supports again, whereafter additional adjustments are often required. 
     EP0479720A1 further discloses a method for installing false floors with floor panels that are arranged alongside one another in rows and that are supported by adjustable false-floor supports, which are placed in a regular grid pattern on the bare floor. With this method an auxiliary plane is levelled in a desired distance or in a predefined height above a section of the bare floor which comprises several grid intersections. Afterwards the false-floor supports are placed onto the grid intersections between the auxiliary plane and the bare floor and set onto the predefined height and fixed. Then the floor panels are mounted on the fixed false-floor supports. 
     In contrast thereto, in JP2002089022 it is proposed to mount a beam consisting of two rail elements by means of false-floor supports. The false-floor supports comprise each a massive head member, which by means of a screw nut is vertically movable along a threaded shaft of a foot member and is connectable by means of screws with rail elements fitted on both sides. 
     From said documents it can be derived, that the known false-floor supports have a complex design required for compensating an unevenness of the bare floor in view of height and inclination. However, not only the construction of the false-floor supports requires efforts, but also the adjustment, in order to compensate unevenness, bothersome differences in elevation and inclinations of the bare floor at the installation sites. In the event that false-floor supports get shifted laterally, then readjustments are required. In the event that an earthquake should occur it is likely, that the false-floor supports shift under the load of the room installations due to vibrations and oscillations. Afterwards differences in elevation of the floor panels need to be corrected with significant effort. 
     SUMMARY OF THE INVENTION 
     The present invention is therefore based on the object of providing an improved false floor as well as a method and a device for the installation of the false floor, with which the above described deficiencies are avoided. 
     Particularly a method shall be provided that allows to install a false floor quickly and precisely with minimal effort and independently of the unevenness of the bare floor. 
     For the inventive false floor false-floor supports with a simple design shall be usable. Adjustments of the false-floor supports shall not be necessary. 
     It shall be possible, to create the false floor with high precision and low-cost. Further the false floor shall be immune against mechanical impacts and vibrations so that adjustments after the installation shall also not be required. 
     It shall be possible to rapidly install and uninstall the false floor. In particular, the exchange of the false floor, e.g. if required with a change in elevation, shall be possible with minimal time and effort. 
     The method and the device serve for the installation of a false floor above a bare floor. The false floor comprises false-floor supports, which are placed preferably in a regular grid pattern on the bare floor and on which floor panels are arranged alongside one another in rows. 
     According to the invention, mounting positions are determined for the false-floor supports and the false-floor supports to be installed are correspondingly positioned. Furthermore, a mounting plane lying at a mounting height is at least partially determined preferably by using laser devices. The false-floor supports to be installed are then positioned relative to the mounting plane. Pedestals, which are composed of solidifying pedestal material that is binding to the bare floor and which project beyond the mounting plane, are provided at the mounting positions before, during or after the positioning of the false-floor supports. The false-floor supports are then held each in the respective pedestal until the latter has solidified. 
     In the event that the floor panels were not already connected to the false-floor supports, then the floor panels are mounted on the false-floor supports after the solidification of the pedestals. 
     Since the false-floor supports are all on the same height in a horizontal mounting plane, adjustment is not required. Consequently, simply designed false-floor supports can be used, which in the simplest embodiment consist of a hollow cylindrical or rectangular tube. One end of the tube forms the foot member and the other end forms the head member of the false-floor support. If the diameter of the tube is sufficiently large and the false-floor supports are precisely positioned, then the corners of four floor panels can be seated on the tube. The false-floor support can also comprise a foot member with such a tube and a head member, e.g. a round or quadratic plate. Preferably, identical false-floor supports are used that are made from metal or plastic. 
     The false-floor support can consist of one part or a plurality of parts. It is of particular advantage to use a false-floor support with a foot member that is inserted into a pedestal, whereafter a suitable head member is mounted, e.g. in order to adjust the height of the false floor. Furthermore, the false floor can completely be uninstalled in a very short time and reinstalled again. For a renovation of a room the false floor can be removed with the exception of the remaining foot members. Afterwards the equipment required for the renovation can be moved into the room. 
     E.g., the false-floor supports are made from iron sheet with round or polygonal cross-sections. E.g., a part of an iron sheet is cut out and partitioned in four sections, which are then bent step-by-step by 90° against one another. In order to firmly anchor the false-floor supports in the pedestals, the foot member is preferably provided with anchor elements that are cut out of the iron sheet and are bent to the outside. 
     The inventive method can be executed in several variations, as individually desired by the user, wherein specific method steps may be interchanged. 
     The mounting positions for the false-floor supports can be determined sequentially or in groups. The pedestals can also be created sequentially or in groups. The false-floor supports, which consist of one or more parts, can also be inserted into the pedestals sequentially or in groups. A plurality of false-floor supports, preferably four, can already be connected to a floor panel, so that the false-floor supports can be positioned together with the floor panels. The mounting plane can also be selected in such a way, that the mounting plane lies on the height of the plane, in which the installed floor panels will be arranged. In this way the floor panels can be aligned with their upper edge with the mounting plane. 
     The pedestal material used for creating the pedestals is preferably filled into a structural member, which determines the final form of the pedestal and which prevents the pedestal material from being displaced when the false-floor supports are inserted. The structural member, e.g. a conically shaped, thin-walled tubular member, is preferably made from plastic or iron sheet. The conical shape allows stapling of the structural members and removal after solidification of the pedestals so that they can further be used. Furthermore, reinforcement elements made from metal or plastic can be provided. 
     Alternatively, the pedestal material used for creating the pedestals can be filled into containers, such as bags or bellows that are individually attached to the foot members of each false-floor support and that are preferably flexible. E.g., the container adjoins the foot member in such a way that the pedestal material can be filled through the false-floor support into the container. Infilling of the pedestal material can be done immediately before mounting the false-floor supports or the floor panels, so that the pedestal material can harden within a few minutes, without adding an activator. Alternatively, an activator can be added, e.g. if the pedestal material had been filled earlier into the container. Alternatively, it is also possible that the hardening of the pedestal material is done after the removal of the container, e.g. by exposing the pedestal to air or heat. 
     The pedestal material used for creating the pedestals is for example a concrete mix, a concrete for floors, a cement mix or a plaster, which is composed and applied in such a way that it solidifies only after a timespan, in which the false-floor supports have been inserted. It is further possible to apply means or energy, e.g. heating the pedestals, in order to accelerate solidification. Said materials exhibit the advantage, that they quickly get bound to the bare floor. However, the inventive method also allows placing false-floor supports in groups and holding the false-floor supports until the pedestals are solidified. 
     According to the invention the dimensions of the pedestals are created preferably uniformly in such a way that even the false-floor support at the lowest mounting position can be inserted with the required penetration depth into the pedestals. If the bare floor is substantially even, then smaller pedestals can be provided, which allow secure holding of the false-floor supports at even height. By examining or measuring the bare floor the use of the material can be optimized. 
     For the installation of the false-floor supports an inventive installation device can advantageously be used. The installation device comprises a holding device with a device grid arranged in a device plane that corresponds to the mounting grid and that exhibits two or more device positions where coupling devices are mounted, which serve for holding false-floor supports. 
     After fixing the false-floor supports on the holding device, the holding device is aligned with its device plane in parallel or congruent to the reference plane and lowered towards the mounting plane until the lower ends of the false-floor supports reach the mounting plane. 
     Thereby pedestals are prepared with pedestal material that is not solidified before positioning the false-floor supports or after positioning the false-floor support. It is particularly advantageous to prepare the pedestals after the positioning the false-floor supports. Thereby the requirement of determining mounting positions on the bare floor, where pedestals would be prepared before, is avoided. The mounting positions are determined by alignment of the false-floor supports e.g. in a grid pattern with a grid distance of 60 cm. After lowering the false-floor supports preferably vertically the positions of the pedestals are determined. Now, the pedestals can be built in a simple manner by providing a structural member each at the positions of the false-floor supports. This task can be executed particularly simple by coupling the structural members to the false-floor supports so that the false-floor supports and the structural members can be lowered together towards the bare floor after positioning of the false-floor supports. In this way, the structural members and hence the pedestals are always at the correct position without additional effort. The releasable connection or coupling of the structural member to the false-floor support is executed preferably by means of at least one clamp element, which is inserted in addition or is formed on the false-floor support or the structural member. Preferably, the structural member and the at least one clamp element, as well as the false-floor support, are preferably formed from an iron-sheet. 
     Shifting the false-floor supports into the mounting positions can be done in two different alternatives. In the first alternative the holding device is shifted along a calculated distance. If the holding device is held by a plurality of supports that comprise each an identical drive device, e.g. a spindle drive, then it is sufficient to actuate each drive device in the same manner, so that the holding device is shifted always in alignment in parallel to the reference plane along the desired distance. 
     Alternatively, the holding device is shifted preferably in parallel to the reference plane until a mounting or reference plane is reached at a lower level. E.g., the holding device is provided with optical sensors, which capture the light of a laser system present in the reference plane and/or the mounting plane. Signals of these sensors allow a control system to adjust the holding device in the reference plane and/or the mounting plane or in a specific distance in parallel thereto. 
     The holding device is supported with at least three, preferably four lifting devices and is vertically movable with these lifting devices. E.g., the holding device is held by supports that are provided with drive devices, e.g. electric motors, which drive a spindle. The spindle is engaged in a bearing block that is connected to the holding device and that is vertically shifted upwards or downwards together with the holding device when the spindle is turned. Such spindle drives are available for example by maxon company (see maxonmotor.com). Any other preferably controllable lifting device, hydraulic and pneumatic lifting devices, can be used, which allow vertical shifting of the holding device. 
     After the installation, the lifting devices and/or the drive devices are preferably released from the holding device and used for another holding device, so that these devices need not be present in multiples. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
       Below, the invention is described with reference to the drawings. 
         FIG. 1  shows the prior art false floor described above, which comprises adjustable false-floor supports that support the floor panels; 
         FIG. 1   a  shows a false-floor support of  FIG. 1 , which supports the corners of four floor panels; 
         FIG. 2  shows a part of an inventive false floor with an inventive false-floor support installed in a pedestal as well as a simple inventive installation device in schematic illustration; 
         FIG. 3  shows the creation of a pedestal, as well as the operation of the installation device of  FIG. 2 ; 
         FIG. 4  shows an inventive installation device with which false-floor supports can be inserted in groups by means of lifting devices precisely into prefabricated pedestals; 
         FIG. 5  shows the false-floor supports of  FIG. 4  after insertion into the pedestals and the exchange of the lifting devices by auxiliary supports; 
         FIG. 6  shows the false-floor supports of  FIG. 5  firmly installed in the solidified pedestals, on which false-floor supports floor panels have been mounted for creating the false floor; 
         FIG. 7  shows a false floor with false-floor supports that consist of two parts and that are inserted in a common pedestal; 
         FIG. 7   a  shows a two-part false-floor support with two tubes that are movable into one another; 
         FIG. 7   b  shows a single-part false-floor support that comprises a head member and a foot member that has been prefabricated from rectangular pipes; 
         FIG. 7   c  shows false-floor supports in form of simple tubes that have been inserted into pedestals; 
         FIG. 8   a  shows a part of a holding device made of rectangular pipes with coupling devices, with which false-floor supports can be fixed with a movement by hand; 
         FIG. 8   b  shows the part of the holding device of  FIG. 8   a  after fixing a false-floor support, with a lifting device that can be operated manually or with a drive device; 
         FIG. 9   a  shows the holding device of  FIG. 8   a  after attaching 16 false-floor supports; 
         FIG. 9   b  shows the holding device of  FIG. 9   a  with false-floor supports directed downwards towards the bare floor and four symbolically shown drive devices; 
         FIG. 10  shows the attachment of false-floor supports together with a structural member on a beam-shaped element of a holding device; 
         FIG. 11   a  shows infilling of pedestal material into the structural member, while the false-floor support is held by the beam-shaped element of the holding device; 
         FIG. 11   b  shows a false-floor support with anchor elements; 
         FIG. 11   c  shows the false-floor support held in the solidified pedestal, after removal of the beam-shaped element; and 
         FIG. 12  shows four false-floor supports, which are preferably firmly connected to a floor panel and which comprise foot members that are connected to containers that are filled with pedestal material. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 1  shows the prior art false floor  100 , which has been described above and which comprises adjustable false-floor supports  200  which support the floor panels  1 .  FIG. 1   a  shows the false-floor support  200  of  FIG. 1 , which supports the corners of four floor panels  1  of the false floor  100 . 
       FIG. 2  shows a part of an inventive false floor  10  with a false-floor support  2 A installed according to the invention, which supports four floor panels  1  in the manner shown in  FIG. 1   a.    
     Use of the inventive method, which is described below, allows mounting of all false-floor supports  2 A,  2 B with little effort at the same height h M  in a mounting plane E M  above the bare floor  3 . 
     For this purpose, mounting positions  30 A;  30 B; . . . for the false-floor supports  2  are determined on the bare floor  3 . This can be done precisely with a laser system, which forms a grid pattern, whose intersection points P R  indicate the mounting positions  30 A;  30 B; . . . . 
     At the mounting position  30 A;  30 B; . . . pedestals  23  are provided that consist of pedestal material that is solidifying and bonding onto the bare floor  3 . 
     Subsequently, preferably by means of laser devices  91 , at least a part of a reference grid R R  is created that lies in a horizontal reference plane E R , whereby at least one mounting plane E M  is partly defined, which lies in a selected distance d in parallel thereto on a mounting height h M . The mounting plane E M  intersects the pedestals  23  at the mounting height h M , which is selected in such a way that the false-floor supports  2 , which are inserted down to the mounting plane E M , are securely held in each pedestal  23 . 
     In a further installation step the false-floor supports are inserted from above at least approximately vertical into the pedestals  23  that are not yet solidified, until the lower end of the false-floor support  2  lies at least approximately at the level of the mounting height h M . 
     The false-floor supports  2  are then held each in a related pedestal  23 , until this pedestal  23  has hardened, whereafter the holding device  99  is removed. Subsequently the floor panels  1  mounted. 
     The false-floor supports  2 , which are made preferably from metal or plastic, can have a simple design and comprise in the shown embodiment a tubular foot member  22  and a head member  21  in the a form of a head plate. The false-floor support  2  does not require an adjustment device. Only in preferred embodiments two-part false-floor supports  2  are provided that are adjustable. 
     The length or height the false-floor supports  2  corresponds to the difference of the height h M  of the at least one mounting plane E M  to the height h DB  of the false floor  10  (the height h DB  is measured at the lower side of the floor panels  1 ). By selecting false-floor supports  2  with a specific height or by stepwise adjustment of the false-floor supports  2  the height the false floor  10  can be selected. This is of particular advantage in the event that a new false floor  10  shall be installed at a different height h DB , when a renovation or restoration is performed. 
       FIG. 2  shows that the false-floor supports  2  are positioned with the precision of the laser-device  91  and are firmly held in the pedestal  23 . Hence, in principle, a head plate  21  is not required. The corners of the floor panels  1  can securely be mounted on a tube that exhibits a corresponding diameter. Even under massive mechanical impacts, shifting of the false-floor supports  2  is practically excluded, wherefore the inventive false floor  10  can advantageously be installed in areas, where earthquakes may occur. 
       FIG. 2  shows a simply designed installation device  9 , which comprises, besides a preferably used laser device  91 , also sensors  92  that provide a sensor signal, as soon as a laser beam is captured. The installation device  9  comprises a holding device  99  with which a false-floor support  2  or a group of false-floor supports  2 A,  2 B, . . . can be held and aligned in a reference plane E R  or a reference grid R R  and can be driven towards the mounting plane E M . 
     With the laser device  91  a reference grid R R  with intersection points P R  is created at a height h R , vertically below which intersection points P R  mounting positions  30  are marked on the bare floor  3 . The reference grid R R  serves further for the alignment of the holding device  99 , on which at least one optical sensor  92  is provided, which indicates reaching the reference plane E R  and correct alignment within the reference plane E R . 
     The holding device  99  comprises coupling devices  98  at the lower side, with which false-floor supports  2  can be attached vertically aligned to the holding device  99 . In the embodiment shown, the coupling devices  98  comprise individual grafters or a common grafter that can be shifted over the head members of the false-floor supports  2 , in order to fix the false-floor supports  2 . The false-floor supports  2  are held for example by flange elements  981  that are mounted on the holding device  99 . Hence, the false-floor supports  2  can be inserted and fixed in the flange elements  981  in a simple manner.  FIG. 8  and  FIG. 9  show instead of a grafter a clamp device, with which each false-floor support  2  can be fixed by manually operating a lever. 
       FIG. 2  shows further that the holding device  99  can be adjusted in height and can be aligned horizontally in the reference plane E R  by means of laser devices  91 ,  92  or by means of a water-level and further measurement instruments, particularly optical measurement instruments. 
     The holding device  99  forms a frame with longitudinal bars and transversal bars, preferably rectangular pipes, which are aligned in a plane, namely the device plane E V , corresponding to the reference grid R R . The mutual distance of the crossing points of the longitudinal bars and transversal bars corresponds thereby to the mutual distance of the mounting positions  30 A,  30 B of the false-floor supports on the bare floor  3 . In the event that an installation company installs floor panels with different dimensions, then the distance between the crossing points of the longitudinal bars and transversal bars is preferably adjustable. For this purpose preferably longitudinal bars and transversal bars are used, which can be shifted telescopically into one another or can be connected with one another in different grid distances. 
       FIG. 3  illustrates two different options of operating the installation device  9  of  FIG. 2 . 
     With the first option the holding device  99  with the device plane E V  is aligned in parallel or congruent to the reference plane E R . After alignment of the holding device  99  in the reference plane E R  or parallel to the reference plane E R  a vertical movement is performed over a predetermined distance d M  in parallel towards the mounting plane E M . The distance d M  is selected in such a way, that after traversing the distance d M  the lower ends of the false-floor supports  2  reach the mounting plane E M  and lie at the mounting height h M . Precise traversal of the distance d M  can be performed in several ways. Movements of the holding device  99  can be measured and controlled. Sensors and end stops can be provided, which indicate the traversal of the distance d M , in order to stop the drive devices  95 , or to block a further movement. Further, it can be arranged that the manually or electrically operated drive devices  95  can perform only a predetermined number of steps or turns, which correspond to the distance d M . If the drive devices  95  each comprise a stepper motor, then this stepper motor is controlled accordingly. 
     Alternatively, the holding device  99  with the device plane E V  is aligned preferably horizontally, if appropriate in parallel or congruent to the reference plane E R  and then moved towards the mounting plane E M , until one or a plurality of sensors  92 ;  92 A, . . . indicate reaching of a mounting or reference plane E MR , which is selected in such a way that the lower ends of the false-floor supports  2  are at the height h M  of the mounting plane E M , when the sensors  92 ;  92 A, . . . are activated. In principle it is sufficient, when a laser device or, more general, a line generator is provided as a reference for reaching the mounting or reference plane E MR . Since the pedestals  23  are not solidified when the false-floor supports  2  are entered, only one reference line R L  can be provided and the horizontal alignment of the holding device  99  can be examined and corrected again when the reference line R L  is reached. 
       FIG. 3  shows a further preferred option for creating the pedestals  23 . In this option a structural member  300  is provided at each mounting position  30 A,  30 B, . . . , and is filled with pedestal material  2300  that is used for creating the pedestals  23 , such as a concrete mix, concrete for floors, a cement mix or a plaster. The structural member  300  shown comprises the form of a conically shaped tube, through which the pedestal material  2300  is transferred to the bare floor  3  so that it is laterally held and pedestals  23  in the form of a cake are obtained. After hardening of the pedestal  23  the structural members  300  are preferably removed and reused. 
       FIG. 4  shows an inventive installation device  9 , with which the false-floor supports  2  can be entered in groups by means of lifting devices  95 ,  96  and a holding device  99  at the exact positions into prefabricated pedestals  23 . 
     The lifting devices  95 ,  96  comprise each a support  96 , with which a spindle drive  95  is held at constant height. For each lifting device  95 ,  96  the holding device  99 , which comprises a frame structure with longitudinal bars  991  and transversal bars  992 , comprises a bearing block  952 , in which the spindle  951  of the drive device  95  is entered. With each turn of the spindle  951 , the related bearing block  952  and therefore the holding device  99  is shifted upwards or downwards, depending on the turning direction. Hence, each lifting device  95 ,  96  is connected via a spindle  951  and a bearing block  952  with the holding device  99  and can be released therefrom in a simple manner. For this purpose the spindle  951  is turned, until the bearing block  952  is released. Hence, the lifting devices  95 ,  96  can be used for adjusting and moving the holding device  99  and can then be released and used with a further holding device  99 . 
       FIG. 4  shows that the installation device  9  can be controlled and completely automated with a control unit  90 . Processing of the signals of the sensors  92  and the measuring device  97  as well as controlling the drive units  95  can be done e.g. with a notebook computer  90 . Communication is performed preferably via a wireless network. 
       FIG. 5  shows the holding device  99  after the removal of the lifting devices  95 ,  96 , which are used for the installation of a further holding device  99 . In order to hold the holding device  99  in position until the pedestals  23  are solidified, it has been fixed by means of auxiliary supports  960 , which are removed as soon as the pedestals  23  are solidified. 
       FIG. 6  shows the false-floor supports  2  of  FIG. 5  firmly installed in the solidified pedestals  23 . On the false-floor supports  2  the floor panels  1  were amounted for creating the false floor  10 . It is shown that the false-floor supports  2  can advantageously be round or polygonal pipes, which do not comprise a head plate. Due to precise mounting and precise alignment of the false-floor supports  2  pipes with small cross sections can be used. E.g., round pipes with a diameter in the range of 8 cm-16 cm or polygonal pipes with a side length in the range of 8 cm-16 cm and a material thickness in the range of 1.5-3 mm are used. Depending on the load and the length of the false-floor supports  2  deviating dimensions can be selected. Further, enforcing elements such as reinforcing seams can be integrated into the pipes, which enhance solidity. Further, preferably anchoring elements are provided in the foot region of the tubes, i.e. the false-floor supports  2 , which hold the false-floor supports  2  firmly within the pedestals  23 . For this purpose, grooves that are arranged like a thread can be provided in the foot member. The length of the false-floor supports  2  can be selected by the user in a wide range. E.g., a unitary length in the range of 8 cm-16 cm is selected. 
     It is also possible to adapt the method to a bare floor  3 , which exhibits a gradient, e.g. steps. With adaptations of the installation device  9  a plurality of mounting planes E M  can be provided and false-floor supports  2  with different lengths can be installed. E.g., the distance d M  that needs to be traversed can be adapted to the selected mounting plane E M  and to the selected length of the false-floor supports  2 . 
       FIG. 7  shows an inventive false floor  10  with a plurality of two-part false-floor supports  2 , which comprise each a foot member  22  held in a common pedestal  230  and a head member  21  serving for holding floor panels  1 . 
     The height h M  of the mounting plane E M  within the common pedestal  230  lies above the height h P  of the highest point of the bare floor  3 . Hence, when lowering the false-floor supports  2  the bare floor  3  is not reached by them. This application is preferably then used, when the bare floor  3  needs to be covered anyway with an additional layer that can advantageously be used as a common pedestal  230 . The false-floor supports  2  are inserted in the same way into the common pedestal  230 , as this has been described for individual pedestals  23 . 
       FIG. 7   a  shows a two-part false-floor support  2  with two tubes with a head member  21  and of a foot member  22  that can be inserted into one another. 
       FIG. 7   b  shows a one-part false-floor support  2  that comprises a foot member  22  in form of a rectangular pipe and a head member  21  in form of a plate. The rectangular pipe allows safe mounting of floor panels  1  even with a small cross section. 
       FIG. 7   c  shows in a three-dimensional view false-floor supports  2  which are simple round pipes. 
       FIG. 8   a  shows from below a part of a holding device  99 , consisting of rectangular pipes with a coupling device  98 , with which a false-floor support  2  can be fixed by executing a single manual operation of a lever. The coupling device  98  comprises a U-profiled flange element  981 , which is connected to the holding device  99  and into which a false-floor support  2  can be inserted in a form locking manner and can be fixed by means of the clamp  982 . 
       FIG. 8   b  shows from above a part of the holding device  99  of  FIG. 8   a  after fixing the false-floor supports  2 , with a lifting device  96  that is operated manually or by means of a drive device  95 . It is shown that a drive motor  95  is set up on a spindle  961 , which is turned in order to vertically move the holding device  99 . 
       FIG. 9   a  shows the holding device  99  of  FIG. 8   a  after fixing sixteen false-floor supports  2 . For mounting the false-floor supports  2 , the holding device  99  has been laid with the upper side onto the bare floor  3 . 
       FIG. 9   b  shows the holding device  99  of  FIG. 9   a  with the false-floor supports  2  directed towards the bare floor  3 . Subsequently, the false-floor supports  2  are transferred into the pedestals  23  according to the inventive method. 
       FIGS. 10 ,  11   a  and  11   b  relate to a preferred option of the inventive installation method, which has also the object of anchoring all false-floor supports  2  at the same height within pedestals  23 . With this option, the installation is performed with minimal effort. 
       FIG. 10  shows that the false-floor supports  2 A,  2 B,  2 C are mounted by means of coupling devices  98  on a beam-shaped element  991  of a holding device  99 . The coupling devices  98  comprise an elastic element, which can be connected to the beam-shaped element  991  and to the false-floor supports  2 . E.g., a hook is cut out of the false-floor supports  2 , in which the elastic element, e.g. a simple rubber ring, can be engaged. Further, the structural members  300  are guided over each false-floor support  2 A,  2 B,  2 C and are fixed by means of clamp elements  7 . The clamp elements  7  comprises tongues  72  which are adjoining the false-floor support  2  and which are mounted on a ring  71 , which adjoins the structural member  300  and presses the structural member  300  against the beam  991 . Hence, the beam  991  can be turned, without getting the mounted false-floor support  2  and the structural member  300  released. For the attachment of the structural members  300 , the structural members  300  and the false-floor supports  2 A,  2 B,  2 C can also be provided with openings facing one another, through which a bar-shaped locking element can be guided. After positioning the false-floor supports  2 A,  2 B,  2 C the bar-shaped locking elements are removed so that the structural members  300  can be shifted against the bare floor. In preferred embodiments, centering elements can be provided, which can be part of the structural members  300  or the false-floor supports  2 A,  2 B,  2 C, which hold the movable structural members  300  and the false-floor supports  2 A,  2 B,  2 C in coaxial alignment. 
     Subsequently, the beam  991  is lowered as described above until the lower side of the false-floor supports  2 A,  2 B,  2 C reach the mounting positions on the height of the mounting plane E M . Then the structural members  300  are moved downwards until they reach the bare floor  3 , as shown in  FIG. 11   a  and  FIG. 11   b . It is shown that the cross-section of the false-floor supports  2 A,  2 B,  2 C is smaller than the cross-section of the smaller one of the openings of the conically-shaped structural member  300 , wherefore between the outer side of the false-floor supports  2 A,  2 B,  2 C and the inner side of the structural member  300  space remains for infilling pedestal material  2300 , e.g. a concrete mix. The false-floor supports  2 A,  2 B,  2 C preferably comprise openings, which allow the liquid pedestal material to enter the false-floor supports  2 A,  2 B,  2 C. 
       FIG. 11   a  shows infilling of pedestal material  2300  into the structural member  300 A while the false-floor support  2 A is still held by the beam-shaped element  991  of the holding device  99 . 
       FIG. 11   b  shows a false-floor support  2  with anchor elements  29 , which are designed to firmly hold the false-floor support  2  in the pedestal  23 . Further, the false-floor support  2  comprises reinforcing seams that run in parallel close to the edges. With the reinforcing seams the stability of the false-floor support  2  is increased. 
       FIG. 11   c  shows the false-floor support  2 B, which is held in the solidified pedestal  23 B after the beam-shaped element  991  has been removed. 
     In a preferred embodiment the holding device  99  is installed stepwise in the reference plane E R  after the positioning of the first beam  991  and then uninstalled again. 
       FIG. 12  shows four false-floor supports  2 A,  2 B,  2 C and  2 D that are preferably firmly connected with a floor panel  1  and that comprise containers  3000 A, . . .  3000 D at the foot members that are filled with pedestal material  2300 . If the false-floor supports  2 A,  2 B,  2 C and  2 D have a tubular design then the pedestal material  2300  can be introduced through the false-floor supports  2 A,  2 B,  2 C and  2 D transferred into the containers  3000 . 
     In this preferred embodiment of the invention, floor panels  1  are connected with false-floor supports  2 A,  2 B,  2 C and  2 D and can be positioned at a desired height, whereafter the pedestal material  2300  adapts to the bare floor  3  and is hardened. By positioning and aligning the floor panels  1  the pedestal material is pressed against the bare floor  3  and is laterally displaced as far as required. Thereby, the container  3000  can be removed or can remain. E.g., a container is provided, which consists of at least partially perforated material, e.g. a plastic foil, which allows air and/or water to pass. Symbolically it is shown that a material  2301  can be applied which allows acceleration of the curing process. 
     With this embodiment of the invention, floor panels  1  that are equipped with corresponding false-floor supports  2 A,  2 B,  2 C and  2 D and containers can quickly be positioned, aligned and therefore mounted in a short period of time. By the process of positioning the floor panels  1 , the floor panels  1  can sequentially be coupled with one another, so that they lie precisely in a plane. 
     In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.