JP2023007289A - Building flooding prevention device - Google Patents

Abstract

To provide a flooding prevention device for preventing flooding from a sill throating ventilation hole of a first story of a building at the time of flooding, and a building having the flooding prevention device and a flooding prevention method.SOLUTION: A sill throating provided with a ventilation hole for ventilating a building underfloor generally spreads, but since the sill throating is generally positioned at a height of 40 to 50 cm from a ground surface, a water level at the time of flooding exceeds the height, which causes damages such as flooding below/above a floor level. Thus, there is provided a building flooding prevention device which is provided with: a sill throating which simply and surely blocks a ventilation hole with a waterproof member at the time of prediction of flooding occurrence and prevents a flooding damage; and a member for fixing a waterproof member previously mounted on a conventional sill throating. The waterproof member is fixed, a ventilation hole is blocked and flooding is thus prevented.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a device for preventing water from entering a building through a draining ventilation hole in the foundation of the building, a building equipped with the device, and a building flood prevention method to which the device is applied.

Floods, storm surges, etc., cause flood damage above and below the floors of buildings in flood-prone areas. One of the causes of this is the lack of progress in the development and popularization of effective and easy-to-install flood prevention devices that prevent flooding from the ventilation holes of the foundation drains, which inundate a large amount of water into the building.
Conventional foundation drains with ventilation holes are provided with a float-type waterproof member for blocking the ventilation holes inside the foundation drains as a measure to prevent water from entering the building through the ventilation holes (see Patent Document 1). , a technique in which a packing member provided inside a base drainer is manually moved to close a ventilation hole (see Patent Document 2), and many other techniques have been proposed.

Patent application 2015-229898 JP 2021-067158

However, in the case of the technique disclosed in Patent Literature 1, it is conceivable that fine floating matter may enter the inside of the base drainer during flooding, thereby interfering with the operation of the waterproof member inside the base drainer.
In addition, the base drainer of Patent Document 2 is used when manually moving the packing member inside the base drainer for closing the ventilation hole, if there is something difficult to move such as a wooden deck or an air conditioner outdoor unit close to the building, they becomes a hindrance and makes it difficult to move the packing member.

Furthermore, both the inventions of Patent Literatures 1 and 2 require replacement work to replace the existing foundation drainer with the invention product in the case of an existing building, which requires considerable expenses. In addition, even with other invention technologies, the manufacturing cost is considered to be considerable due to the complexity of the structure for preventing flooding from the base drain ventilation hole.

Therefore, it is possible to reliably close the ventilation holes, and even if it is an existing building, there is no need to replace the foundation drainage, and it can be installed at a relatively low cost. Be expected.

The present invention is a flood prevention device that reduces anxiety about flood damage and prevents flooding from the foundation draining ventilation hole by closing the ventilation hole of the base draining with a waterproof member when the occurrence of flooding is predicted, The installation cost is relatively low, and the work of closing the ventilation hole with a waterproof member is simple and reliable.

In order to solve the above-mentioned problems and achieve the above-mentioned goals, the building flood prevention device according to the present invention is a waterproof member molded into a shape that completely closes the base drain ventilation hole, depending on the shape of the building. It is characterized in that it is inserted into a base drainer or a waterproof member fixing member, fixed at a predetermined position, and blocks a ventilation hole to prevent water from entering through the ventilation hole.

An outline of the present invention will be described.
In this building flood prevention device, when fixing a waterproof member molded in a shape to block the ventilation hole of the foundation drainer to the foundation drainer, insert it into the foundation drainer and fix it without using fixing tools (tools, screws, etc.) shall be. In addition, it was decided that the water-resistant adhesive tape should be used within the necessary range to improve the watertightness.

In addition, a fixing member for fixing the waterproof member that closes the ventilation hole is attached to the conventional base drainer, which does not have a fixing function for the waterproof member, by screwing it in advance to the base drainer. The waterproof member can be fixed without using a fixing tool in the same way as the base drainer with a fixing function.

Furthermore, when fixing the waterproof member, it is possible to block the ventilation hole by simply inserting the waterproof member along the bottom wall of the base drainer and pushing it to a predetermined position. , so that the fixing work can be done easily and surely.

When fixing the waterproof member to the base drainer, there is no need for tools, screws, etc., and there is no need to use a lot of water-resistant adhesive tape. few.
In addition, when a lot of water-resistant adhesive tape is used, it is necessary to prepare a new adhesive tape once it is used when predicting flood damage, but in the present invention, a large amount of adhesive tape is prepared. Since it is not necessary, it is very advantageous in terms of cost, and it has become possible to quickly fix the waterproof member to the base drainer without hesitation when predicting the occurrence of flooding.
Furthermore, as described above, it is possible to prevent water intrusion by retrofitting the fixing member of the waterproof member to the conventional base drainer by a simple method such as screwing.

In addition, since the waterproofing member can be fixed to the base drainer without any hindrance to daily life, prepare for disasters by fixing the waterproofing member at an early stage before a typhoon or heavy rain/flood warning. In addition, it is a building flood prevention method that can be used as one of flood disaster prevention measures for the entire region in cooperation with residents' associations, local governments, and the like.

An outline of the present invention will be described. First, in buildings where underfloor ventilation is required, it is stipulated by law that ventilation holes (vents, etc.) around the foundation must be installed. However, in the event of a flood, etc., the amount of inundation from the ventilation holes is large, so the greatest challenge in building flood prevention measures is to balance ventilation during normal times with prevention of inundation during floods, etc.
Therefore, when it is predicted that flooding will occur, it is possible to temporarily close the ventilation holes by inserting waterproofing members into the foundation draining or fixing members that have ventilation holes, if the number is small, from several places and fixing them at predetermined positions. To provide a building flood prevention device for preventing water from entering inside through a foundation drainage ventilation hole.

As described above, the present invention has been proposed by those skilled in the art (construction, disaster prevention, administrative affairs) and conventional technology. By using the technology to fix without using any other equipment, we have realized a device that simply and reliably closes the foundation drainage ventilation holes and prevents water from entering the building from the foundation drainage ventilation holes. Moreover, it is a device that can be retrofitted to an existing building.
Furthermore, since the structure and shape of each member are not complicated and there are no automatic or moving parts, it is relatively resistant to troubles such as failures and is easy to maintain.

The present invention will be described in order from claim 1.
According to the first aspect of the invention, a waterproof member molded into a shape necessary to prevent water from entering the building from a ventilation hole provided in the bottom wall of the foundation drainer, and the waterproof member are inserted. It consists of a base drainer with the function of fixing it in close contact with the ventilation hole.

Conventionally, as in the above-mentioned patent document, a technology has been proposed in which a mobile waterproof member is provided inside the base drainer, but there are things that are difficult to move, such as wood decks and air conditioner outdoor units, installed near the base drainer. If they are, they will be a hindrance and it will take a long time to manually fix the waterproof member, and furthermore, it is difficult to visually confirm that the ventilation holes are blocked. The problem was that even if it was confirmed that it was not blocked, it was difficult to deal with it urgently.

In order to prevent inundation from the foundation draining ventilation hole, if even one part of the ventilation hole is not partially blocked, flood damage cannot be prevented.
However, foundation drainage ventilation holes are installed almost all around the building, and many buildings also have wooden decks.
Therefore, even if a wooden deck, etc., is installed close to the foundation drainage ventilation holes, it is necessary to simply and reliably block the ventilation holes covering almost the entire circumference of the building with a waterproof member to prevent flooding from the foundation drainage ventilation holes. was an issue to be overcome.

The present invention solves several problems that were difficult with such conventional techniques, and provides a building flood prevention device that reliably closes the entire foundation drainage ventilation hole in a short period of time. In addition, as described below, since the structure is simple, manufacturing costs, transportation costs, installation costs, maintenance costs, etc. can be kept low.

The waterproof member of the present invention is a molded product made of metal, resin, rubber, etc., having water resistance and durability. A single material may be used, or a combination of different materials may be used.
For example, it may be a combination of a metal and a sponge bonded together. In this case, the waterproof member is brought into close contact with the ventilation hole due to the pressing force of the elastic material such as sponge, and the watertightness around the ventilation hole can be improved.
In addition, in order to improve watertightness, packing, water-absorbent members, and water-expandable members may be attached to the part where the waterproof member contacts the base drain ventilation hole, etc., or the above packing, etc. may be attached around the base drain ventilation hole. You can also paste it.

The base drain function of this device is the same as the conventional one, and the main function added to the conventional one is that the waterproof member can be inserted without tools and fixed securely in place. It is a function that closes the ventilation hole with A secondary function is to increase the strength of the foundation drainer itself to withstand water pressure, water flow, etc., and the degree of fixation to the building.

Since the functional part for inserting and fixing the waterproof member is integrated with the base drainer body part, the same material may be used, or the base drainer body part and the fixing function part may be integrated by combining different materials.

Next, the invention of claim 2 will be described. According to the present invention, a fixing member for fixing a waterproof member is attached in advance to a conventional base drainer which does not have a function of fixing a waterproof member for closing a ventilation hole, and the fixing member and the base drainer are attached in advance. To provide a building flood prevention device for preventing flooding by inserting a waterproof member between them and pushing it to a predetermined position and fixing it so as to close a ventilation hole.

The waterproof member in claim 2 is, like claim 1, a molded product made of metal, resin, rubber, etc., having water resistance and durability. It may be made of a single material as in claim 1, or it may be made of a combination of different materials.
Further, as described above, in order to improve the watertightness, sponges, packings, water-absorbent members, and water-swellable members may be adhered to portions in contact with the base drain and fixing members.

Next, the fixing member, which is the feature of claim 2, will be described.
The fixing member is to be attached to a conventional base drain that does not have a fixing function for the waterproof member. By attaching this member, it is possible to insert the waterproof member and maintain a fixed state in close contact with the ventilation hole.

The material is water-resistant and durable metal, resin, or the like, and may be of the same type as or different from that of the base drain.

The length is about the same as the base drainer, and the workability during transportation and installation is good.
In addition, if the waterproof member is hard such as metal, it can be attached to the base drain ventilation hole by partially fixing it at an important point. A method of attaching a meter or more in length to a key point may be used.
However, if it is a soft waterproof member such as resin, it is necessary to attach it to almost the entire base drainer, fix the waterproof member almost entirely, and adhere it to the base drainer ventilation hole.
That is, the length of the fixing member is determined depending on whether the waterproof member is fixed entirely or only partially fixed, depending on the hardness of the waterproof member.

Attachment to the base drainer may be performed by a conventional fixing method such as screwing, soldering, welding, or adhesion.
When installing, it is recommended to use an adhesive, a sealing material, etc., in order to increase the degree of fixation.

In the case of "retrofitting" the fixing member to the base drainer installed in the existing building by screwing etc., and in the case of new construction etc., it is integrated with the conventional base drainer by screwing etc. It may be attached to the building after
In particular, we believe that such a device, which can be retrofitted to existing buildings, is at least not widespread so far.

In carrying out claims 1 and 2, it is important to ensure the strength of the base drain itself and the strength of the method of fixing to the building.
Specifically, if the base drain is made of steel plate, the strength of the base drain itself is increased by increasing the thickness of the steel plate, or by bonding metal such as aluminum or plate members such as resin to key points to reinforce the strength. In addition, when installing to a building, it is important to ensure the strength of fixing by screwing to the foundation or foundation at key points to prevent gaps between the foundation and the foundation due to water pressure.

Next, the invention of claim 3 provides a building to which the building flood prevention device according to any one of claims 1 and 2 is applied.

Since the foundation drain is generally located at a low position of about 40 to 50 centimeters from the ground, it is likely to be directly hit by flood currents and drifting objects. Therefore, it is important to ensure that the base drain is not damaged by flooding or the like in order to ensure the effectiveness of preventing the building from flooding through the base drain ventilation holes.
In order to prevent flood currents and drifting objects from directly hitting the area around the foundation drain, it is advisable to enclose the entire building site with a block wall, etc., and to make the gates and gates difficult for water to pass through.

Some conventional base drainers, which do not have a function to fix the waterproof member, are fixed with a gap between the bottom part and the base part when the lower part is fixed. In this case, it is necessary to connect and fix the base drainer and the base part with metal L-shaped members by screws or the like to close the gap and strengthen the fixation of the base drainer.

The waterproof member should be stored outdoors in a storage locker or the like. Furthermore, if the fact that the waterproof member is stored is clearly indicated on the outside of the storage, the waterproof member can be fixed by neighboring residents, etc., even if the elderly household or family members are absent when the flooding is predicted.

In addition, even if this device prevents flooding from the foundation drainage ventilation hole, it is not possible to prevent flooding into the building unless it prevents flooding and backflow from gaps such as entrances and windows, exterior wall joints, drain pipes, etc. General flood control measures are necessary.
In addition, even if flooding is prevented by this device, etc., if the water level rises to about 1 meter above the floor, the building will float even if there is a static water flow. Although there is a limit to preventing floating, measures such as strengthening the connection between the foundation and the building are necessary.

According to the invention of claim 4, this device is relatively inexpensive, and after introduction and installation, the maintenance cost is relatively low. If a subsidy system is applied, it is possible to promote installation throughout the region.
If it is installed on a regional basis in this way, since the method of fixing the waterproofing members is common, it is possible to fix the waterproofing members with the support of neighboring residents and the government, even in elderly households and households without family members. As one of the disaster prevention methods for the entire region, it is expected that it will be possible to prepare for heavy rains, typhoons, etc., and that it will lead to evacuation at home and disaster mitigation effects.
Furthermore, when this device is applied (introduced and installed), the insurance premium for fire (flood disaster) insurance will be reduced, and the installation will be spread further, leading to the realization of disaster prevention and mitigation for society as a whole.

As described above, the present invention is a compromise between ``ensuring normal ventilation'' and ``prevention of flooding'', which is the root of the problem of preventing flooding from the foundation drainage ventilation hole where the amount of flooding in the building is large. Depending on the shape of the building and the material of the waterproofing members, it is possible to insert and fix the waterproofing members from several places when the inundation is predicted. The appearance of the building is not impaired even if it is left as it is, there is no hindrance to daily life, and the waterproof member can be easily attached and detached, and further, the manufacturing cost does not rise significantly even if the waterproof member fixing function is added to the base drain. The inventors have found that the waterproof member and the fixing member can be manufactured at a relatively low cost due to their material, shape, etc., and that they are easy to maintain after installation, and have completed the present invention.

According to the first aspect of the present invention, it is possible to prevent water from entering the building through the ventilation holes by installing a waterproof member to block the ventilation holes.
According to the invention of claim 2, it is possible to prevent water from entering the building from the foundation draining ventilation hole by previously attaching a fixing member for fixing the waterproof member to the conventional foundation draining, including retrofitting. can.
According to the third aspect of the invention, the effect of the flood prevention device can be maximized by protecting the building flood prevention device from flooding and storing the waterproof member outdoors.
In the invention of claim 4, the installation of the device is subject to subsidy system and insurance premium reduction, and the installation is spread, and the region, administration, etc. cooperate, and the region including elderly households, etc. Inundation prevention and disaster mitigation measures can be promoted.

FIG. 2 is a schematic cross-sectional view of Example 1 of claim 1; FIG. 4 is a schematic diagram showing the slope of the base drainer of the first embodiment of claim 1; FIG. 2 is a schematic oblique view of the waterproof member of Example 1 of claim 1; 3 is a schematic cross-sectional view of claim 2; FIG. FIG. 2 is a schematic oblique view of a fixing member according to claim 2, and a reference diagram of embodiment 2 of claim 1. FIG. Fig. 10 is a schematic oblique view of the waterproof member of Example 2 of Claim 2 and Claim 1; FIG. 4 is a schematic diagram showing the slope of the base drainer of the first embodiment of claim 1; FIG. 2 is a schematic oblique view of the waterproof member of Example 1 of claim 1;

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated. However, the embodiments described below and the technical scope of the present invention are not limited to the following embodiments and drawings.
First, Example 1 of the invention described in claim 1 will be described.

The perimeter of a building consists of foundations, foundations, pillars, outer walls, and so on. The upper part of the base drain is nailed (screwed) to the furring or the base. On the other hand, the general mounting method is that the lower part contacts the foundation but is not screwed. Also, the lower tip is generally supported by a foundation or a decorative mortar.

1, 2, 3, 7 and 8 are schematic diagrams of Example 1. FIG. Since FIGS. 1, 2 and 3 are schematic diagrams, the angle of inclination is shown to be large in order to make the trapezoidal shape of the base drainer 1 into which the waterproof member 2 is inserted and the trapezoidal shape of the waterproof member 2 easier to understand. However, in practice, the shape of the trapezoidal portion of the base drainer 1 into which the waterproof member 2 is inserted and the shape of the waterproof member 2 may be such that the lower side of the trapezoidal shape is slightly narrower than the upper side so that the same member does not fall, and the inclination angle ( trapezoidal degree) may be small.
1, 2 and 3, or one side may be slanted as shown in FIGS. may
In addition, if it is made of steel plate, it may be manufactured by plastic working or the like.

In FIG. 1, the waterproof member 2 protrudes outside (below) the bottom wall of the base drainer 1, but in practice, it may be flush with the bottom wall or inside the bottom wall. However, the waterproof member 2 should be provided with a convex portion outward (downward) from the bottom wall portion of the base drainer 1 so that it can be easily moved when fixing and removing, so that the operability during fixing work is good.

Example 2 will be described with reference to FIGS.
As the bottom wall portion for fixing the waterproof member of the base drainer 1, the shape thereof may be the same shape as 4b, 4e of the fixing member 4 of claim 2 shown in FIG. This bottom wall portion is provided below the ventilation hole portion. In this case, the waterproof member is the waterproof member 5 having a substantially rectangular cross section as shown in FIG. As described above, the first and second embodiments differ in the shape of the portion where the waterproof member is inserted and fixed. It should be noted that the illustration of this portion is merely a reference example. The shape of this waterproof member fixing function portion is limited to the shape shown in Embodiments 1 and 2 as long as it is a shape that can secure the watertightness of the ventilation hole by inserting the waterproof member, moving it to a predetermined position and fixing it. Absent.

In addition, in both Examples 1 and 2, it is necessary to provide a portion where the waterproof members 2 and 5 are inserted in the base drainer 1 . 1 and 2 in the case of the first embodiment, the lower side of the trapezoidal portion of the base drainer 1 is processed to have the same width as the upper side so that the waterproof member 2 can be inserted.
However, if the protruding corner portion of the base drain is partially detachable, it is possible to insert the waterproof member from the same portion, so there is no need to provide the above insertion point. Furthermore, although not shown, in this case, the waterproof member can be inserted into the base drainer above the ventilation hole to block and fix the ventilation hole from above (inside) (Embodiment 3).

To explain the case of the second embodiment, the bottom wall portion (the wall portion located below the ventilation hole portion) of the base drainer 1 corresponding to the shape of the fixing member 4 is hollowed out at 4e. It shall be cut out by extending it up to the intersection with , and processed so that the waterproof member 5 can be inserted from the same part.

Further, in both Examples 1 and 2, the length of processing of the insertion portion of the waterproof member depends on the material and thickness of the waterproof members 2 and 5 . That is, if the waterproof member is flexible or thin and can be bent in the vertical direction at the time of insertion, the waterproof members 2 and 5 can be inserted even if the length to be processed is short, and the member can be placed in a predetermined manner. You can push it into position. On the other hand, if the waterproof members 2 and 5 are poor in flexibility or thick and difficult to bend in the vertical direction, the waterproof member is inserted and the length that allows it to be pushed to a predetermined position is adjusted as described above. It must be processed.

Next, the invention defined in claim 2 will be described with reference to FIGS.
FIG. 4 is a schematic cross-sectional view of an embodiment of claim 2. FIG.
The conventional base drainer 3 does not have the function of fixing a waterproof member for blocking the ventilation hole provided in the bottom wall.
Therefore, as shown in FIG. 4, a fixing member 4 for fixing the waterproof member is brought into close contact with the conventional base drainer 3, and attached by screws or the like at portions 4b and 4d.
FIG. 4 is a schematic diagram and does not show the conventional base drainer 3 and the fixing member 4 in a state of being in close contact with each other, but in practice, they are in close contact with each other to improve watertightness.
Although screws are used as the fixing method in the drawings, conventional fixing methods such as soldering and bonding may be used. Further, it is preferable to increase the degree of fixation by using an adhesive, a sealing material, or the like.

Next, the waterproof member 5 (FIG. 6) is made of metal, resin, rubber, or the like.

In FIG. 4, as described above, the contact portion (ventilation hole portion) of the waterproof member 5 and the base drainer 3 is illustrated as a gap, but in practice, the waterproof member is formed so as to be in close contact without a gap to close the ventilation hole. 5 shall be used. Moreover, in order to increase the watertightness around the ventilation holes, sponges, packings, water-absorbing members, and water-swelling members may be pasted together.

FIG. 5 illustrates the fixing member 4 .
Reference numeral 4a denotes a portion that is in close contact with the exterior of the vertical wall of the conventional base drainer 3. As shown in FIG. This part is fixed to the base drainer 3.
4b is a part that supports the waterproof member 5 so that it does not fall.
4 c is a height for ensuring the thickness of the waterproof member 5 . In addition, when the vertical wall of the base drainer 3 extends downward from the bottom wall, it is necessary to secure the length of the extension. However, if the length is not secured, a molded (deformed) shape into which the waterproof member 5 can be inserted may be used.
4d is a portion fixed to the bottom wall portion of the base drainer 3 other than the ventilation hole portion.
A part 4e is located directly under the ventilation hole of the base drainer 3 and is cut out to ensure ventilation when the waterproof member 5 is not fixed. It should be noted that the length of the hole 4e depends on the material, strength, etc. of the fixing member 4 and the waterproof member 5. As shown in FIG. That is, when the strength of the material of the fixing member 4 is high and the degree of deformation of the waterproof member 5 is small, the hollowed out length can be long. At the key point of , the bottom wall part corresponding to 4b is secured as a bridge, and the continuous length of the hollowed out part is shortened to improve the strength of the fixing member 4 and the degree of adhesion of the waterproof member 5 to the ventilation hole. Plan.

As for the reference sizes of the above parts, the height of the vertical part of 4a is lower than the vertical wall of the conventional base drainer 3 (however, it is higher and has the same slope as the base drainer). It may be made into a cover and fixed to the base drainer.On the contrary, it may be shortened and fixed to the inside of the downwardly extending portion of the vertical wall of the base drainer.), the length of the horizontal part of 4b is for ventilation. Secure the length necessary to block the hole, the height of 4c should be about 5 mm or less, and the horizontal part of 4d should be less than the length that can be installed considering the length to the decorative mortar of the foundation. and
In addition, the above height and length are only reference values, and each height, each length, installation position, installation method, etc. are set according to the conventional foundation drainer 3 to be installed and the construction condition of the building. and

In addition, as described above, the fixing member 4 can be several centimeters in length if the degree of adhesion to the base drainer 3 can be secured in the case where the waterproof member 5 is made of metal or the like and the degree of deformation in the vertical direction is small. As a member having a length of about or more, it may be partially attached at a key point of the base drain 3 according to the length and deformation degree of the waterproof member 5 .

What is common to claims 1 and 2 is that the waterproof members 2 and 5 can be wound up if they are molded from elastic resin, rubber, or the like. If it can be wound up and stored, when fixing it, insert the tip into the base drainer 1 or the fixing member 4 at the charging location where the wood deck etc. is not installed, and push it into the predetermined position as it is. The portion where 4 is a straight line can be fixed in a continuous state. In this way, if the waterproof members 2 and 5 are flexible and can be wound up, efficiency during transportation/storage and fixing work can be improved, and they can be fixed in a long single state. Therefore, watertightness can be improved.

If the conventional base drainer 3 made of steel plate is insufficient in strength and the ventilation holes are blocked, the bottom wall will be pushed upward by the water pressure at the time of flooding, creating a gap between the bottom tip and the foundation. There is In order to prevent such a gap from occurring, it is preferable to connect and fix the base drain 3 and the base with screws or the like using an L-shaped metal plate or the like.
In addition, in the case of the base drainer 1, a part along the base is provided at the bottom or a part in contact with the base is provided, and the fixing is strengthened by fixing the base or the base with screws at the same part.
However, if the base drainer has water pressure resistance and there is no gap between it and the foundation, the lower tip can be supported by the foundation or decorative mortar as before.

In addition, the waterproof member does not interfere with daily life even if it is fixed, and does not spoil the scenery, so it is possible to fix it to the base drain for a limited time for the purpose of heat storage heating under the floor.
It can also be used as a countermeasure against storm surges and salt damage caused by sea breezes.

The building flood prevention device of the present invention is not limited to the above-described embodiments, and the material, shape, length, fixing method, etc. of each member can be variously changed within the scope of the claims.
The basis of the present invention is that the waterproof members 2 and 5 molded into a shape capable of reliably blocking the ventilation hole of the base drainer 1 are inserted into the fixing function part of the base drainer 1, pushed in to a predetermined position and fixed, and then ventilated. To prevent water from entering through a hole. In addition, conventional base drains, which do not have a function to fix the waterproof member, can be fitted with a fixing member in advance to insert and fix the waterproof member to prevent water from entering from the ventilation hole. be.
In the scope of claims, the present invention refers to a flood hazard map, etc., and comprehensively considers the location conditions of the building, the surrounding environment, the state of the building itself, the installation state of the foundation drainer, etc. In addition to appropriately combining waterproofing materials, etc. with conventional fixing methods, etc., it is better to apply installation promotion measures to establish buildings that are resistant to inundation from foundation drainage ventilation holes and to establish disaster prevention and mitigation measures.

1 Base drainer 2 Waterproof member (cross section is trapezoidal)
3 Conventional base drainer 4 Fixing member 4a Vertical wall of fixing member (the part fixed to the conventional base drainer 3)
4b Bottom wall portion of fixing member (portion supporting waterproof member 5)
4c Vertical wall of the fixing member (the part that secures the height for storing the waterproof member 5)
4d Bottom wall portion of fixing member (portion fixed with conventional base drainer 3)
4e Cut-out part of fixing member (part for securing ventilation directly under the ventilation hole)
5 waterproof member (cross section is almost rectangular)

Claims (4)

A device for preventing water from entering a building,
A base drain with a function to insert and fix a waterproof member that prevents water from entering the building from the ventilation hole of the base drain,
A waterproof member molded into a shape that is inserted into the base drainer and closes the ventilation hole;
A building flood prevention device for preventing flooding into a building from a foundation drainage ventilation hole of the building. A device for preventing water from entering a building,
a conventional base drain with ventilation holes;
A fixing member having a function of inserting and fixing a waterproof member for closing the ventilation hole and having a shape to be attached to the base drainer;
a waterproof member that is inserted into the fixing member and molded into a shape that closes the ventilation opening;
A building flood prevention device for preventing flooding into a building from a foundation drainage ventilation hole of the building. A building to which the building flood prevention device according to claim 1 is applied. A building flood prevention method to which the building flood prevention device according to claim 1 is applied.

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