JP2016217774A - Inspection method of rainwater leakage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection method without requiring labor so much and capable of minimizing a required member at low cost in the inspection method of rainwater leakage specifying a site which is a cause of the rainwater leakage.SOLUTION: A crack 13 in an outer wall 12 of a house is visually confirmed, and after that, an injector 14 is placed on the crack 13 to inject a constant quantity of water 15 and the water 15 overflowing to the outer wall 12 is absorbed by a water absorbing sheet 16. The presence or absence of water immersion from the crack 13 is confirmed by weighing a difference between an injected constant quantity of water 15 and a quantity of the water 15 absorbed by the absorbing sheet 16 and a site which is a cause of the rainwater leakage is specified.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rain leak inspection method characterized by confirming the presence or absence of inundation from a place where rain water is expected to be flooded in an exterior of a building and identifying a place causing rain leak.

Usually, when a leak occurs in a house, it is investigated where the location causing the leak is and repairs are performed.
Conventionally, liquid reception is achieved by providing clay with plasticity, adhesiveness, and water resistance around a place where rainwater is expected to be infiltrated, such as cracks, scratches, and gaps in the exterior of a house. Inspection of rain leak characterized by injecting liquid into the liquid receiving member by means of an injection amount measuring device comprising a meter for measuring the injection amount, a valve capable of measuring the injection amount, and an injection pipe for injecting liquid. A method is known (see, for example, Patent Document 1).

In this rain leak inspection method, it is possible to check whether the liquid has entered the interior of the house from where the rain water is expected to be flooded by changing the amount of liquid. We were able to.
Furthermore, it was possible to measure the amount of liquid that was flooded into the interior of the house from where rainwater was expected to be flooded.

  However, in this rain leak inspection method, it is necessary to form a liquid receiving member with clay every place where rainwater is expected to be infiltrated, which is very troublesome.

  Furthermore, when removing the liquid receiving member from the exterior after the inspection, it is troublesome, and depending on the material of the exterior, it may not be able to be removed cleanly, which may impair the aesthetics of the building.

  Furthermore, since a clay and an injection amount measuring device for forming the liquid receiving member are required, the cost is high and the simple inspection is not possible.

JP 2010-44076 A

  The present invention is a rain leak inspection method characterized by specifying a location that causes rain leak, and is low cost without requiring a lot of labor and minimizing necessary members. To provide an inspection method.

  The first problem-solving means of the present invention is to visually confirm a rainwater inundation expected place in the exterior of a building, and then inject a certain amount of liquid to the rainwater inundation expected place by injecting a fixed amount into the exterior side. By absorbing the overflowed liquid with the water absorbent material, and measuring the difference between the injected constant liquid amount and the liquid amount absorbed with the water absorbent material, confirm the presence or absence of flooding from the rainwater flooding expected location, A rain leak inspection method characterized by identifying a location that causes a rain leak.

  The second problem solving means of the present invention is the rain leak inspection method according to the first problem solving means, wherein the liquid is water.

  According to a third problem-solving means of the present invention, the surface temperature in the vicinity of the expected rainwater inundation after liquid injection is further measured by thermography, and the rain leakage inspection method according to the first or second problem-solving means is characterized in that It is.

  A fourth problem solving means of the present invention is the rain leak inspection method according to the third problem solving means, wherein the liquid is a hot liquid or a cold liquid.

  The first problem-solving means of the present invention is to visually check a place where rainwater is expected to be flooded on the exterior of a building (rainwater flooding expected spot), and then apply a syringe to the spot to fix a certain amount of liquid. The liquid that overflows to the exterior side is absorbed by the water absorbent, and the liquid is built from the location just by measuring the difference between the amount of liquid injected and the amount of liquid absorbed by the water absorbent. It can be confirmed whether or not the inside has been submerged.

For this reason, it is possible to carry out a rain leak inspection by specifying a flooded location of rain water that causes a rain leak at a low cost without requiring a lot of labor and minimizing necessary members.
Furthermore, since no special cleaning is required after the inspection is completed, the labor is not required and the aesthetic appearance of the building is not impaired.

  In addition, if there is no difference between the injected fixed liquid amount and the liquid amount absorbed by the water absorbing material, it can be determined that the location is not the cause of rain leakage.

  The second problem-solving means of the present invention can make the liquid injected into a place where rainwater inundation is expected, in addition to the effects exhibited by the first problem-solving means, and more commonly used water. In addition to being able to inspect rain leaks at low cost, there is no risk of damaging the exterior of the building.

  According to the third problem solving means of the present invention, in addition to the effects exhibited by the first or second problem solving means, if necessary, the exterior near the location where rainwater is expected to be flooded after liquid injection by thermography. In order to measure the surface temperature of the building, it is possible to observe the movement of the flow of liquid that has been submerged in the building pinpointed by the temperature distribution, and to easily investigate the relationship with the rain leak location inside the building .

  The fourth problem-solving means of the present invention, in addition to the effect exhibited by the third problem-solving means, is to make the liquid injected into the place where rainwater inundation is expected to be warmer or cooler than normal temperature, For example, when the liquid is immersed in the interior, the liquid that travels on the back side of the exterior quickly affects the surface temperature of the exterior, so that the movement of the submerged liquid can be quickly measured by thermography.

The external appearance perspective view of the house which shows a rainwater inundation anticipated location. The partial perspective view of the outer wall which shows a crack. The partial perspective view of the outer wall which shows a mode that the injector and the water absorbing sheet were applied to the crack. The partial expanded side view which shows a mode that the injector was applied to the crack. The partial expanded side view which shows a mode that water is poured into a crack with a syringe. The image figure which shows the temperature distribution of the outer wall image | photographed with thermography.

The rain leak inspection method of the present invention will be described as follows.
In the present invention, after confirming visually a crack 13 which is an expected rainwater inundation location on an outer wall 12 which is an exterior of a house 11 which is a building, a liquid consisting of a certain amount of water 15 by applying an injector 14 to the crack 13. The water 15 overflowing the outer wall 12 is absorbed by the water absorbing sheet 16 as a water absorbing material, and the difference between the amount of the constant water 15 injected and the amount of water 15 absorbed by the water absorbing sheet 16 is measured. This is a rain leak inspection method characterized in that the presence or absence of water from the crack 13 is confirmed and the location causing the rain leak is specified (see FIGS. 1 to 3).

  The expected rainwater inundation location in the present invention refers to a location where rainwater inundation is expected in the exterior, and is not only a crack 13 but also a joint portion of building materials (for example, an unsealed portion 13a between joints and joints). Sash area 13b (sealing part), scratches, gaps, etc. (see FIG. 1).

Furthermore, the building in the present invention refers to not only a house but also a built object such as a building, a warehouse, a gate, a tunnel, or a bridge.
Furthermore, the exterior in the present invention refers to not only the outer wall but also what constitutes all inner and outer surfaces of a building such as a sash, a concrete foundation, a roof, a rooftop, an eaves ceiling, an inner wall, a ceiling, a balcony, and a veranda.

  Further, the injector in the present invention is preferably a syringe that is widely used. However, any injector may be used as long as it has a function of injecting a liquid such as a dropper or an infusion device.

  In addition, the liquid in the present invention is preferably water that has been widely used, but it is colored so as to make it easy to understand the flow of the liquid such as an emulsion or a fluorescent liquid, or an osmotic liquid that easily soaks into mortar or concrete. There may be.

  Furthermore, the water-absorbing material in the present invention is not limited to the water-absorbing sheet, and any material can be used as long as it can absorb liquids such as tissue paper, kitchen paper, towels, handkerchiefs, and cloths.

  In the present invention, when there is a difference between the amount of the injected constant water 15 and the amount of the water 15 absorbed by the water absorbing sheet 16, it is confirmed that the water 15 has been submerged into the house 11 from the crack 13. It can be determined that the crack 13 is the cause of the rain leak.

  On the other hand, when there is no difference between the amount of the injected constant water 15 and the amount of the water 15 absorbed by the water absorbing sheet 16, it is confirmed that the water 15 is not immersed in the house 11 from the crack 13. It can be determined that the crack 13 is not the cause of the leak.

  Even if there is a difference between the amount of the injected constant water 15 and the amount of the water 15 absorbed by the water absorbing sheet 16, if the difference is very small, it is considered as a tolerance, and the water 15 from the crack 13 It may be determined that the house 11 is not flooded.

The specific procedure of the rain leak inspection method of the present invention will be described below.
First, it is visually confirmed whether or not there is a predicted rainwater inundation on the outer wall 12 of the house 11 by human power.

  Next, when it is confirmed that there is a crack 13 that is an expected location of rainwater inundation, as a preparation, for example, 10 g of water 15 as a certain amount is put into the injector 14 and water is absorbed by a general electronic scale. The weight of the sheet 16 is measured and the value of the electronic balance is set to zero.

  Next, an injector 14 is applied to a part of the crack 13 (see FIG. 4), a water absorbent sheet 16 is placed along the outer wall 12 under the tip of the injector 14 and 10 g of water 15 is injected by the injector 14. Then, the water 15 overflowing to the outer wall 12 side is absorbed by the water absorbing sheet 16 (see FIG. 5).

  Next, after measuring the mass of the water-absorbing sheet 16 after water absorption with an electronic balance, the difference between the amount of the injected water 15 and the amount of water 15 absorbed by the water-absorbing sheet 16 is measured, so that rainwater is submerged. Check for presence.

  For example, when the mass of the water absorbent sheet 16 after water absorption is 8 g (amount of water), the amount of water 15 absorbed by the water absorbent sheet 16 is subtracted from the amount 10 g of the injected water 15, thereby cracking 13. It can be confirmed that 2 g of water 15 has been submerged into the interior of the house 11 (see FIG. 5), and it can be determined that the crack 13 is the cause of rain leakage.

  After the above-described inspection, the flow of water 15 immersed in the house 11 is measured by measuring the surface temperature of the outer wall 12 around the crack 13 with a thermography 17 as necessary. Can be observed by the temperature distribution 18, and the relevance with the rain leak location inside the house 11 can be easily investigated (see FIG. 6).

  Moreover, in that case, when the water 15 is made into warm water (60-80 degreeC is desirable) or cold water (0-10 degreeC is desirable), for example, when the water 15 is immersed inside, the back side of the outer wall 12 is Since the transmitted water 15 quickly affects the surface temperature of the outer wall 12, the movement of the flow of the submerged water 15 can be quickly measured by the thermography 17.

  The temperature of hot water or cold water here refers to the temperature when compared with normal temperature, and the proper use of hot water or cold water varies depending on the season at the time of inspection and the surface temperature of the location to be inspected.

  In addition, in a method for inspecting the cracks of the outer wall for a long period of about 10 to 30 minutes, which is a well-known rain leak inspection method that has been performed for a long time, the presence or absence of an internal rain leak is confirmed. However, since the amount of water used in the rain leak inspection method of the present invention is very small, it can be performed at low cost even with hot water or cold water.

  According to the inspection method for rain leakage of the present invention, the rainwater infiltration expected locations A to J of various building exteriors that were actually confirmed visually were inspected, and the results shown in Table 1 were obtained.

The expected rainwater inundation location A was a crack with a width of 0.4 mm on the outer wall of the mortar, and the amount of water infiltration into the interior was 4 g. Therefore, it could be determined that this was the cause of rain leakage.
The expected rainwater inundation point B was a crack with a width of 0.5 mm on the outer wall of the mortar, and the amount of water intrusion into the interior was 5 g. Therefore, it could be determined that this was the cause of rain leakage.
The expected rainwater inundation location C was a crack with a width of 0.2 mm on the outer wall of the mortar, and the amount of water inundation into the interior was 0 g. Therefore, it could be determined that it was not the cause of rain leakage.

The expected rainwater inundation D is around the sash of the outer wall of the siding (sealing part), and since the amount of water inundation into the interior was 0 g, it could be determined that it was not the cause of rain leakage.
The expected rainwater inundation E is a sash area (sealing part) on the siding outer wall that is different from the expected rainwater inundation D, and the amount of water inundation into the interior is 4 g. I was able to.

The expected rainwater inundation point F is the flat part of the outer wall of the siding (the part between the sidings), and the amount of water inundation into the interior is 0 g. did it.
The expected rainwater inundation point G is the flat part of the outer wall of the siding that is different from the expected rainwater inundation point F (the siding area between the sidings). I was able to judge that it was not.

The expected rainwater inundation H was a crack with a width of 0.3 mm in the concrete foundation, and the amount of water inundation into the interior was 0 g. Therefore, it could be determined that this was not the cause of rain leakage.
Rainwater inundation predicted location I is a crack with a width of 0.3 mm on a concrete foundation different from rainwater inundation expected location H, and the amount of water inundation into the interior is 1 g. I was able to.
The expected rainwater inundation J was a crack with a width of 0.5 mm in the concrete foundation, and the amount of water inundation into the interior was 3 g. Therefore, it could be determined that this was the cause of rain leakage.

DESCRIPTION OF SYMBOLS 11 House 12 Outer wall 13 Crack 13a Peeling part between sidings 13b Around sash 14 Injector 15 Water 16 Water absorption sheet 17 Thermography 18 Temperature distribution

Claims (4)

After visually confirming the expected rainwater inundation on the exterior of the building,
Inject a certain amount of liquid by applying a syringe to the expected rainwater inundation point,
The liquid overflowing the exterior side is absorbed by the water absorbing material,
By measuring the difference between the constant amount of injected liquid and the amount of liquid absorbed by the water-absorbing material, the presence or absence of inundation from the expected location of rainwater inundation is confirmed, and the location that causes rain leakage is identified. Inspecting rain leaks.   The rain leak inspection method according to claim 1, wherein the liquid is water.   The rain leak inspection method according to claim 1 or 2, further comprising measuring the surface temperature around the expected rainwater inundation after liquid injection by thermography.   The rain leak inspection method according to claim 3, wherein the liquid is a warm liquid or a cold liquid.

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