Background Field A basement is generally called an underground construction buried in the earth in a building or another substructure. For it, the basement has problems different from buildings or facility exposed to the ground as follows : First, the water leakage occurs.

As underground water flows, the basement contacting with the underground is subject to be under the condition that underground water may be penetrated through inner walls or base thereinto.

Second, the dew condensation happens.

As the underground is kept at a constant temperature over the ground, the basement is relatively warmer in winter and chilling in summer over the ground. For it, the space in the basement has a temperature higher than that of the walls or base thereby to form dews on the inner surfaces, which is called the dew condensation phenomena.

Third, the humidity is relatively higher.

The basement becomes much humid state in its inner air due to the

water leakage and the dew consideration. The humid state in the air results in the environment that the mold grows easily. It deteriorates articles or products during being stored, or gives an uncomfortable environment to a person that resides thereat.

Considering these points, when the basement is constructed in the building or another substructure, until now, the damp-proof construction has been performed in a various manner in order to prevent the water leakage phenomena through the walls and base. Therefore, the water leakage phenomena could have been prevented to some degree. But, even through the water leakage phenomena is prevented, the humid air in the basement could not be removed due to the dew condensation phenomena. That is because the sufficient consideration on the dew condensation phenomena in the basement lacks. The inner space of the basement stayed at the humid state like this is inappropriate for a place that a person resides, or articles or products are stored in. Furthermore, the place has a problem in respect of being valuably utilized.

In order to resolve these problems, the inventor developed a damp- proof construction method of a building and obtained US Patent Numbered 5, 184, 437 which was issued on February 9,1993. The prior patent'437 discloses a damp-proof construction for buildings and subway construction using a damp-proof brick and plastic-palette as damp-proof members, in which damp-proof bricks formed of plastic materials are disposed on an underground base surface adjacent the inside surface of the outer wall of a building and then an inner wall is fabricated on the damp-proof brick layer with cement bricks, on the whole base surface of the underground bottom, plastic palettes are mounted to form a palette layer, a non-woven fabric covers over the upper surface of the palette layer to form a non-woven fabric

layer and an upper mortar or reinforced concrete slab is formed on the non- woven fabric layer. The prior patent prevents the inflow of penetrating water from the underground base surface into the building construction, especially the inner walls and the upper slab of the basement, while the inner space of the basement is remained at a comfortable humid state.

But, the prior patent has a problem in that in order to provide the sufficient stiffeners to the upper reinforced-concrete slab the careful construction is required. If not, the upper reinforced-concrete slab will result in not having the sufficient hardness more than expected. That is because the upper reinforced-concrete slab is mounted directly on the plastic palette layer through the non-woven layer which may have the water permeability. If the non-woven layer formed of a water penetrating non-woven material is layered, it acts to be a vent layer having the water permeability. As a result, the vent layer causes water required for the hydration action with concrete to be leaked into the plastic palette layer therethrough, before the upper reinforced concrete completely hardens under the hydration action. For it, when the upper reinforced concrete slab is layered, sufficient water should be supplied during the hardening of concrete to assure the stiffeners of the reinforced concrete slab.

Also, the prior patent lacks the countermeasure against the dew condensation phenomena under the state that the upper reinforced concrete slab and the inner wall are directly contacted to the outer walls through the non-woven layer, the plastic palette and the damp-proof bricks. That is because the dew condensation occurs on the surface of the upper reinforced concrete slab due to the significant temperature between the inner walls or the upper slab and the inner space of the basement.

The object of the invention is to provide a damp-proof construction and

method of a basement for interrupting the water leakage from the underground water into the basement, removing the dew condensation and keeping the constant room humidity.

The other object of the invention is to provide a damp-proof construction and method of a basement for improving the quality of an upper reinforced concrete slab and establishing a better damp-proof effect of the basement.

Disclosure of Invention According to the invention, a damp-proof method comprises steps of arranging water penetrating palettes on the bottom slab of a basement to be connected with one another to form a water penetrating palette layer separated and fixed at a predetermined interval from an outer wall, in which the water penetrating palette has a configuration for allowing water and air to be passed through its upper, lower, right and left portions ; mounting waterproof clothes for passing air therethrough on the water penetrating palette layer to form a water impermeability vent layer ; forming an upper slab made of a reinforced concrete on the water impermeability vent layer with being spaced at a predetermined interval from the outer wall ; and fabricating an inner wall on around the peripheral edge of the reinforced concrete slab with being spaced from the outer wall.

A damp-proof construction comprises a water penetrating palette layer including water penetrating palettes arranged on the bottom slab of a basement to be connected with one another and separated and fixed at a predetermined interval from an outer wall, in which the water penetrating palette has a configuration for allowing water and air to be passed through its upper, lower, right and left portions ; a water impermeability vent layer

including waterproof clothes for passing air therethrough mounted on the water penetrating palette layer ; an upper slab made of reinforced concrete, which is formed on the water impermeability vent layer with being spaced at a predetermined interval from the outer wall ; and an inner wall fabricated on around the peripheral edge of the reinforced concrete slab with being spaced from the outer wall.

Such like a damp-proof construction is subject to form a buffering wall space between the inner and outer walls to be separated from each other.

Also, the existence of the water penetrating palette layer functions to separate the inner and outer walls from each other. Therefore, even through the waterproof work on the outer wall or the inner wall is not well done, and the underground water is penetrated into the bottom slab of the outer wall, the penetrating water is effectively interrupted not to be inflowed into the inner space of the basement from the inner wall and the reinforced concrete slab by being separated from the outer wall or the bottom slab due to the existence of the buffering wall space and the water penetrating palette layer.

Also, the room air of the basement is not directly contacted with the outer wall or the bottom slab, but contacted with the inner wall or the upper reinforced concrete slab, thereby preventing the dew condensation phenomena thereon, effectively. Therefore, it is noted that the invention differentiates from the prior patent in respects of interrupting the water penetrating and dew condensation phenomena to the inner space of the basement.

Brief Description of Drawings The invention now will be described in detail with reference to the accompanying drawings, in which ;

Fig. 1 is a cross-sectional view illustrating the basic technical configuration of a damp-proof construction of a basement according to the invention ; Fig. 2 is a perspective view illustrating a water penetrating palette constituted as a water penetrating palette layer according to the invention : Fig. 3 is a cross-sectional view illustrating the technical configuration that damp-proof bricks are mounted on the peripheral ends of the water penetrating palette layer and then an inner wall is fabricated thereon according to the invention ; Fig. 4 is a separately perspective view illustrating a damp-proof brick according to the invention ; Fig. 5 is a cross-sectional illustrating an embodiment of the technical configuration for finishing the surroundings of a column according to the invention ; Fig. 6 is a cross-sectional view illustrating an embodiment of the technical configuration for finishing the surroundings of a partition wall which is mounted in a basement according to the invention ; and Figs. 7a to 7c are cross-sectional views embodiments of the technical configuration for finishing the surroundings of water discharging trenches which are respectively mounted in a different configuration in a basement according to the invention.

Best Mode for Carrying out the Invention Referring to Figs. 1 and 2 illustrating first embodiment of the invention, a basement of a building includes a bottom slab 2 and an outer wall 2 which are generally formed of a reinforced concrete. Water penetrating palettes P are disposed on the bottom slab 2 to be connected to each other so

as to form a water penetrating palette layer 3, in which the water penetrating palette P is made of a synthetic resin or plastic material and has a <BR> <BR> <BR> <BR> configuration to allow water and air to be passed through its upper, lower, left : and right portions. The water penetrating palette layer 3 is spaced at a predetermined interval from the outer walls 2 of the basement. A water impermeability vent layer 4 including waterproof clothes or canvases is layered on the water penetrating palette layer 3, in which the waterproof clothes allows air to be passed therethrough, but interrupts the water penetrating therein. An upper reinforced concrete slab 5 is formed on the water impermeability vent layer 3 with being spaced from the outer walls 2.

Inner walls 6 are fabricated on the surrounding edges of the upper reinforced concrete slab 5, which is spaced at a predetermined interval from the outer walls 2. Herein, the water penetrating palette P is explained in detail referring to Fig. 5 of the prior patent, the explanation of which is omitted. The configuration illustrates the basic technical idea of the invention.

Referring to Figs. 3 and 4 illustrating a second embodiment of the invention, damp-proof bricks 8 are positioned along the surrounding edges of a water penetrating palette layer 3 including a plurality of water penetrating palettes to be connected to one another. Next, inner walls 2 are fabricated on the damp-proof bricks 8 with normal bricks 8a. The damp-proof brick 8 includes the normal brick 8a and a cover structure 8b made of synthetic resins which is sealed from its upper surface as shown in Fig. 4. An upper reinforced concrete slab 5 is formed on the water penetrating palette layer 3 through a water impermeability vent layer 4 including a plurality of water impermeability vent layer 4. Therefore, the second embodiment has an advantage in that as the surrounding edges of the water penetrating palette layer 3 are previously set on the bottom surface of the basement, it facilitates

the upper reinforced concrete slab 5 to be spaced at a predetermined interval from the outer wall 2.

Herein, it is noted that the water impermeability vent layer 4 allows air to be freely passed therethrough, but prevent the water penetrating thereinto.

To it, the water impermeability vent layer 4 makes a decisive important role in keeping the quality of the upper reinforced concrete slab 5 in a good state and preventing the occurrence of the dew condensation phenomena.

First, it is known that a reinforce concrete is hardened by the hydration action of cement with water. Therefore, the water leakage should be prevented before the concrete to be hardened is sufficiently hydrated with water during the hardening of the reinforce concrete. The water impermeability vent layer 4 prevents the water leakage from the not-hardened concrete used to form the upper reinforced concrete slab 5.

Second, There often happens cases that the penetrating water exists on the bottom slab 1 nevertheless of the waterproof process. And, sealed air filled in the space of the water penetrating palette layer 3 between the bottom slab 1 and the upper reinforced concrete slab 5 becomes much humid. The sealed humid air rapidly deteriorates the thermal insulation performance that the space of the water penetrating palette layer 3 has. The reinforced concrete construction has fine porous holes throughout its whole body, through which a larger amount of air is communicated.

Therefore, the water impermeability vent layer 4 is mounted on the water penetrating palette layer 3 to allow air filled in the space of the water penetrating palette layer 3 to pass through the upper reinforced concrete slab 5, freely. It prevents air filled in the space of the water penetrating palette layer 3 from becoming too much humid so that the space of the water penetrating palette layer 3 functions to have its own inherent thermal

insulation performance. In other words, the water impermeability vent layer 4 prevents the deterioration of the thermal insulation performance that the space of the water penetrating palette layer 3 has. Furthermore, the water impermeability vent layer 4 prevent the occurrence of the dew condensation phenomena on the upper reinforced concrete slab 5, effectively.

Herein, there are various woven or non-woven fabrics as the waterproof clothes or canvases used in forming the water impermeability vent layer 4. It is noted that the woven fabrics or non-woven fabrics can be used under the concept that the fabrics allow air to be passed therethrough, but prevent water from being passed therethrough.

On the other hand, there may be mounted columns, partition walls, trenches, etc. in a basement. These structures may form the moving path of cooling air and penetrated water or collected water that accidentally generates to cause some troubles in the basement. Therefore, it is necessary to take the finishing process for these structures.

Referring to Fig. 5, a column 20 extends from a bottom slab 1 to an upper slab (not shown) of a basement passing through a water penetrating palette layer 3 and an upper reinforced concrete slab 5. Around the lower surroundings of the column 20 a thermal insulation material 21 is preferably wrapped to interrupt the cooling of the bottom slab 1 not to be transferred to the upper reinforced concrete slab 5. The technical configuration helps preventing the dew condensation phenomena that may happen at the portions that the upper reinforced concrete slab 5 is contacted with the column 20.

Referring to Fig. 6, a partition wall 30 extends from a bottom slab 1 to an upper slab of a basement. In this case, damp-proof bricks 8 are positioned along the passage previously set to construct the partition wall 30, and then normal bricks 31 are stacked on the damp-proof bricks 8. Herein, the damp-

proof bricks 8 prevent the dew condensation phenomena that may happen at the portions that the upper reinforced concrete slab 5 is contacted with the partition wall 30.

Referring to Figs. 7a to 7c, water discharging trenches 40a, 40b and 40c are formed in a basement. As shown in Fig. 7a, the water discharging trench 40a is formed adjacent to a bottom slab 1 at its bottom surface and an inner wall 6 at its one side surface. In this case, a waterproof process is not applied to mortar or reinforced concrete filled and trench bricks 9 stacked around the lower surroundings of the trench 40a. It is for discharging water penetrated into a buffering wall space 7 from the waterproof layer of an outer wall 2 and into a water penetrating palette layer 3 from the bottom slab 1 through the water discharging trench 40a so as to remove moisture on an upper reinforced concrete slab 5.

As shown in the drawings, if the inner wall 6 is positioned adjacent to the surroundings of the trench 40a, it fears that penetrating water is diffused by its capillary action throughout the upper reinforced concrete slab 5 and the inner wall 6 through the trench bricks 9 and the reinforced concrete to which the waterproof process is not applied. Therefore, it is desirable that adjacent the upper side surface of the trench 40a adjacent the inner wall 6 another damp-proof brick 8 is positioned on the trench bricks 9 to be aligned with the damp-proof brick 8 of the inner wall 6. It prevents the capillary action of moisture from the penetrating water into the upper reinforced concrete slab 5 and the inner wall 6. Also, the trench bricks 9 are positioned to divide the water penetrating palette layer 3 and the trench 40a, around the outer surrounding of which the thermal insulation material layer 9a is wrapped. It prevent the cooling transferring through the trench 40a to the inner space of the basement.

Referring to Fig. 7b, a water penetrating palette layer 3 is arranged on a bottom slab 1. An upper reinforced concrete slab 5 is layered on the water penetrating palette layer 3 through a water impermeability vent layer 4. A trench 4b is mounted in the upper reinforced concrete slab 5. In this case, the waterproof process is applied to the inner portions of the trench 40b such as inner wall surfaces and a bottom surface, so as to prevent the penetrating of water into the upper reinforced concrete slab 5. The technical configuration is most suitable for a place where the upper reinforced concrete slab 5 is thick enough to secure the depth of the trench 40b, or an amount of discharging water is relatively small.

Referring to Fig. 7c, a trench 4c is formed passing through an upper reinforced concrete slab 5 to be partly immersed in a bottom slab 1. In this case, the waterproof process is accomplished on the inner surfaces of the trench 40c such as inner walls and a bottom. Also, around the surroundings of the trench 40c damp-proof bricks 8 are arranged adjacent to a water penetrating palette layer 3 to be aligned with the lowest damp-proof brick 8 of an inner wall 6. Therefore, the technical configuration prevents the penetrating of water from the bottom slab 1, the upper reinforced concrete slab 5 and the inner wall 6 into the trench 4c.

Industrial Applicability As described above, a water impermeability vent layer 4 is mounted on the lower portion of an upper reinforced concrete slab 5 to keep the quality of the upper reinforced concrete slab 5 in a good state and to prevent the occurrence of the dew condensation phenomena on the upper reinforced concrete slab 5, effectively, thereby obtaining the damp-proof effect in the basement.