A PROCESS FOR PRODUCING A NUMBER OF PLINTHS, AND AN ARRANGEMENT FOR CARRYING OUT THE PROCESS

Abstract: Process for producing a number of plinths (1), particularly pile-type plinths, with a baseplate (7) or a similar construction element supported on the said plinths (1), and also to an arrangement for carrying out the said process. The invention makes possible the rational, quick, simple and economical production of a plurality of plinths (1) with a baseplate (7) etc. supported thereon. At least one casting mould (4) with a shape corresponding substantially to the said plinth (1) is designed to have its sides covered over with a filling material (5), such as macadam, for example, preferably up to the level (6) from which it is desired that the said plate (7) should extend, after which the plinth (1) and the plate (7) are cast, preferably in a single step.

Description: A Process for producing a number of Plinths, and an Arrangement for carrying out the Process. The present invention relates to a process for pro¬ ducing a number of plinths, particularly pile-type plinths, with a baseplate or a similar construction element support¬ ed on the said plinths. 5 A technique which is already known for making pile- type plinths includes digging out holes wherein it is desired to form the plinths, one at a time, by means of individual casting moulds which are set up in the bottom of the holes which have been dug out. After the casting 10 substance, which is received in the mould in small quanti¬ ties, has set, which normally takes approximately two days, the -ιould is removed and some kind of filling material, such as macadam, for example, is applied round the plinth which has been cast. After this, a baseplate, for example, •15 can be cast, adjoining the said plinth. .Che said technique is not a rational one, since amongst other things it is not possible to produce the plinth and the baseplate at the same time; a considerable time must elapse for the cast plinth to set before a plate can be 2o joined onto it. The main object of the present invention is therefore primarily to provide a process of the kind described above which makes possible the rational, quick, simple and econo¬ mical production of a number of plinths with a baseplate 25 etc. supported thereon. The said object is achieved with a process according to the present invention which is characterised essentially in that at least one casting mould, which has a shape corresponding substantially to the said plinth, is designed 0 to have its sides covered over with a filling substance, such as macadam, for example, preferably up to a level from which the said plate is intended to extend, after which casting of the plinth and the plate is carried out, - 2 - preferably in a single step. A further object of the invention is to provide an arrangement which is suitable for carrying out the pro¬ cess according to the invention. The said further object is achieved with an arrange¬ ment according to the present invention which is essent¬ ially characterised in that it comprises a casting mould which, is produced from a plurality of wires or similar rods forming a netting pattern, and which displays rigid- i"t and is impermeable with regard to the surrounding filling, having a shape corresponding substantially to that of the plinth or plinths which it is desired to pro¬ duce by means thereof. Corrugated sheet or sheet metal which is stiffened in some other way, for example, may also be used. The invention is described in the following by way of a number of embodiment examples, with reference to the accompanying drawings, whereon Figures 1 - 3 show the work-sequence according to the process, where Figure 2 shows the covering of a cast¬ ing mould, and Figure 3 shows the casting of a plinth and baseplate, Figure is a view of a cast plate and plinth, Figure 5 is a horizontal view of a baseplate with its associated plinths, Figure 6 is a horizontal view of a casting mould which is intended for forming three plinths, Figure is a cross-section view of the casting mould in Figure 6, viewed along the section A-A, Figure 8 is a side view of a reinforcing clamp which is suitable for the casting mould shown in Figures 6 and 7, Figure is a side view of a reinforcing loop iirhich is suitable for the casting mould shown in Figures 6 and 7 . Figure 10 is a Horizontal view of a casting mould which is intended for forming two plinths, Figure 11 is a cross-section viev; of the casting mould in Figure 10, viewed along the section B-B, Figure 12 is a side view of a reinforcing loop which is suitable for the casting mould shown in Figures 10 and 11, Figure 13 is a side view of a reinforcing clamp which is suitable for the casting mould shown in Figures 10 and 11, and Figure 1 shows a separate supporting device which is designed to be fitted in a casting mould. According to the invention a process for producing a number of plinths, which are designated with the numeral 1 on the drawings and which are preferably pile-type plinths, consists in making an appropriate number of holes 2 in a foundation 3 > such as the ground soil, for example, down to the level to which it is desired that the respect¬ ive plinths 1 should extend. An appropriate number of casting moulds with a shape corresponding substantially to that of the said plinth 1 are positioned on the bottom 2A of the said hole 2, After this the sides 4A of the said mould 4 are covered over with a filling material 5, such as macadam, for example, preferably up to a level 6 from which it is desired that a baseplate 7 or a similar construction element should extend. Expediently, the plinth mould 4 is made of reinforcement netting with close ly adjacent rods 8 or wires, so that it is endowed with the regidity to withstand pressure from the filling 5 and impermeability to prevent the filling 5 from penetrating into its interior. The base 4B and the upper section 4C of the said plinth mould 4 are preferably left open. Reinforcement 9 » which consists, for example, of a plurality of reinforcing elements 10, 11, 12, 13 with an open or closed circumferential shape, is designed to be fitted in the said plinth mould 4 to provide reinforcement, at least for the plinth 1 which it is intended to cast by means thereof. A plurality of supporting devices 14, like the em¬ bodiment which is shown in Figure 14, for example, with a shape like a staple, can be fitted in the hollow in¬ terior 4D of the casting mould with the aim of providing pressure in the direction towards the filling material 5, and of preventing the casting mould 4 from being crushed due to external pressure from the filling material 5- A handle 15 which is attached to the supporting device 14 enables the latter to be lifted up after the casting sub- stance 16, which is preferably concrete, has been poured into the mould 4. Removal of the supporting device 14, which may be staple- shaped, for example, from the interior 4D of the mould is further facilitated by means of conical shaping. The casting of the plinth 1 and a baseplate 7 or other appropriate construction element which is rigidly connected to the plinth is expediently carried out in a single step, by pouring concrete 16 or some other suitable casting substance 16 into the respective moulds 4 up to the full height thereof, and to a higher level 7 to which it is desired that the baseplate 7 should extend. The concrete 16 is thus received on the upper surface of the filling material 5 , and suitable boundaries, such as shuttering walls adjoining the filling substance 5, define the space which it is intended to fill with concrete 16 to form the said baseplate 7- The setting of the plinth 1 and the baseplate 7 takes place thereafter simultaneously, which affords a considerable saving of time compared with the technique known previously. A further advantage of the invention is that the height of the baseplate 7 can be included in the struct¬ ural height of the plinth, which means a reduced hole depth and less concrete for casting. The invention is not restricted to the embodiment examples shown on the drawing and described above, but its details may be modified within the framework of the following Patent Claims.

Claims: P a t e n t C l a i m s 1. A process for producing a number of plinths (1), particularly pile-type plinths (1), with a baseplate (7) or a similar construction element supported on the said ■ plinths (1), characterised in that at least one casting mould (4), which has a shape corresponding substantially to the said plinth (1), is designed to have its sides covered over with a filling material (5), such as macadam (5), for example, preferably up to a level (6) from which the said plate (7) is intended to extend, after which casting of the plinth (1) and the plate (7) is carried out, preferably in a single step. 2. A process according to Patent Claim 1, character¬ ised in that, before casting takes place, reinforcement (9) is fitted in the said casting mould (4), at least for the said plinth (1). 3. A process according to either of Patent Claims 1-2, characterised in that supporting devices (14) are fitted in the said casting mould (4) in order to withstand press¬ ure from the filling material (5) which is used to sur- round the mould (4), and that suitably after the casting substance (16) has been poured into the mould (4) the said supporting devices (14) are removed therefrom. 4. A process according to any of the preceding Patent Claims, characterised in that a number of holes (2) are dug in a foundation (3), such as the ground soil, for example, down to the level (2A) to which it is desired that the respective plinths (1) should extend, after which an appropriate number of casting moulds (4) are set up in the said holes (2), following which the plinths (1) and the plate (7) are cast in the above-described manner. 5. An arrangement for carrying out any of the invented processes according to the preceding Patent Claims, for producing a number of plinths (1), particularly pile-type plinths (1), with a baseplate (7) or a similar construc- tion element supported on the said plinths (1), characterised in that it comprises a casting mould (4) which is made of a plurality of wires (8) or similar rods (8) in a netting pattern, and which displays rigidity and impermeability towards the surrounding filling material (5) . and has a shape corresponding substantially to the plinth or plinths (1) which it is desired to produce by means thereof. 6. An arrangement according to Patent Claim 5, characterised in that the casting mould (4) is similar to a basket. 7- An arrangement according to Patent Claim 6, characterised in that the casting mould (4) has a tubular shape with an open section at its two respective ends (4B, 4C). 8. An arrangement according to any of Patent Claims 5-7 . characterised in that a supporting device (14) with a shape which fits the interior (4D) of the casting mould has a gripping member (15) which enables the supporting device (14) to be removed from the casting mould (4) after the casting mould (4) has been filled. 9. An arrangement according to Patent Claim 8, characterised in that the said supporting device (14) is staple-shaped, and that the gripping element (15) is formed by a handle (15). 10. An arrangement according to either of Patent Claims 8-9, characterised in that the supporting device (14) is conical.

Inventors: THELBERG ERIK, THELBERG, ERIK
Applicants: GRYTS BRUK AB, AB GRYTS BRUK
Application year: 1983
Main classification: E02D27
IPC codes: E02D27