Building maintenance managing system

Abstract

To provide a building maintenance managing system that enables a precise state evaluation for an external wall in accordance with the site where a building is located.SOLUTION: A building maintenance managing system 1 that executes a maintenance management for an external wall of a subjected building includes: an input unit 3 that accepts an input of structure information on the external wall of the building; a deterioration predicting unit 5 which distinguishes the input structure information on the external wall for each azimuth direction, and which executes a deterioration prediction based on the aging for each azimuth direction; and an output unit 4 that outputs prediction information by the deterioration predicting unit 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building maintenance management system used for performing maintenance management of a building, particularly, an exterior wall. [Background technology]

[0002] Building management companies regularly inspect the exterior walls of their clients' buildings and propose maintenance as necessary. These management companies perform inspections based on their own criteria and propose maintenance plans, and as shown in Patent Document 1, for example, concrete pieces are taken from inspection points on the exterior walls, and the degree of carbonation is measured by inspecting the concrete pieces to determine the need for maintenance.

[0003] This neutralization of concrete occurs when alkaline concrete is exposed to rain and ultraviolet rays, causing the calcium compounds inside the concrete to react with carbon dioxide in the air and gradually lose its alkalinity.As the neutralization of concrete progresses, the steel bars inside the concrete rust and expand, increasing the likelihood of cracks and spalling. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-241250 A (page 5, figure 3) Summary of the Invention [Problem to be solved by the invention]

[0005] In this way, by adopting a judgment method such as that in Patent Document 1, it is possible to propose the necessity of exterior wall maintenance to a customer at an appropriate time. Furthermore, with the recent development of information technology, it is natural for a person skilled in the art who manages the maintenance of such buildings to predict and propose the recommended maintenance timing for a similar building by aggregating and calculating the judgment result of the necessity of maintenance and the structural information of the exterior wall by computer. However, the external environment of each building's exterior wall is different, and it has been confirmed that, for example, the difference in the amount of solar radiation affects the progress of carbonation. Therefore, there was a problem that the accuracy of prediction of the condition evaluation of the exterior wall was low depending on the location of the building.

[0006] The present invention has been made in response to these problems, and has an object to provide a building maintenance management system that is capable of evaluating the condition of exterior walls with high accuracy in accordance with the location of the building. [Means for solving the problem]

[0007] In order to solve the above problems, the building maintenance management system of the present invention comprises: A building maintenance management system for performing maintenance management of the exterior walls of a target building, An input unit that receives input of structural information of an exterior wall of the building; a deterioration prediction unit that classifies the input structural information of the exterior wall by orientation and predicts deterioration due to aging for each orientation; an output unit that outputs prediction information by the deterioration prediction unit; The present invention is characterized by the following features. According to this feature, by taking into account the progress of deterioration, which differs depending on the direction the exterior wall faces, for example the amount of solar radiation, as actual numerical values, deterioration of the exterior wall can be predicted for each direction, making it possible to accurately evaluate the condition of the exterior wall according to the location of the building.

[0008] The deterioration prediction unit is characterized in that, when the input structural information of the exterior wall includes area information regarding the neighboring environment in which the building is located, the deterioration prediction unit corrects the prediction information with a coefficient that is pre-assigned to each piece of area information, and the output unit re-outputs the corrected prediction information. According to this feature, deterioration prediction of exterior walls takes into account the influence of the surrounding environment, such as proximity to the sea, on deterioration of the exterior walls, so that the condition of the exterior walls can be evaluated with high accuracy according to the location of the building.

[0009] The deterioration prediction unit is characterized in that, when it receives material information to be used in maintenance of the exterior wall from the input unit, it outputs the prediction information when the material information is used from the output unit. According to this feature, the effect of the material information used for maintenance on deterioration of the exterior wall is taken into consideration and deterioration prediction of the exterior wall is performed again, thereby enabling accurate conservation management and maintenance proposals for the exterior wall.

[0010] The input unit is capable of receiving occupant information of the building, The deterioration prediction unit updates the prediction information based on a change in the resident information and outputs the updated prediction information from the output unit. According to this feature, deterioration of the exterior walls is predicted taking into account the effect of occupant information on deterioration of the exterior walls, for example, the more occupants there are, the greater the load on the exterior walls, and therefore the condition of the exterior walls can be appropriately evaluated.

[0011] The deterioration prediction unit is characterized in that when it receives actual measurement value information of cracks in the exterior wall for each azimuth unit from the input unit, it corrects the prediction information based on the actual measurement value information and outputs it from the output unit. According to this feature, the prediction information predicted from structural information of the exterior wall is corrected based on the progress of concrete neutralization predicted from actual crack measurements, thereby enabling an accurate evaluation of the condition of the exterior wall.

[0012] The deterioration prediction unit is equipped with a similar property search function, and when a similar property exists, prediction information including past prediction information predicted for the property and details of maintenance that has been performed is output from the output unit. According to this feature, by outputting prediction information including the details of maintenance carried out in actual buildings, it is possible to make realistic maintenance proposals.

[0013] The output unit is characterized in that it is a display that displays the predicted information in a graph showing the relationship between the number of years that have passed and the neutralization depth of the concrete that constitutes the exterior wall. This feature allows customers to see at a glance the relationship between the number of years passed and the progress of neutralization. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a building maintenance management system in an embodiment of the present invention. [Diagram 2] FIG. 1 is an image showing the exterior of the building in which the management will take place. [Diagram 3] FIG. 2 is a diagram showing an information screen displayed on a display serving as an output unit. [Figure 4] FIG. 13 is a diagram showing a state in which the derived annual amount of solar radiation for each direction is displayed on an information screen. [Diagram 5] 1 is a table illustrating an example of regional information and annual solar radiation amount by direction. [Figure 6] FIG. 13 is a diagram showing a state in which a deterioration prediction display is displayed on an information screen. [Figure 7] FIG. 13 is a diagram showing a state in which a deterioration prediction display and a proposal display showing different results are simultaneously displayed on an information screen. [Figure 8] FIG. 13 is a diagram showing a state in which distance information between the coast and the property and the presence or absence of an obstruction are displayed on an information screen. [Figure 9] 11 is a table illustrating coefficients for distance information between the coast and a property and the presence or absence of an obstruction. [Figure 10] FIG. 13 is a diagram showing a state in which whether or not it is exposed to rain is displayed on the information screen. [Figure 11] This is an image showing cracks in an exterior wall being measured. [Figure 12] 13 is a table illustrating an example of building information of a structural frame at the time of new construction stored in the basic information data section. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A building maintenance management system according to an embodiment of the present invention will be described below. EXAMPLES

[0016] A building maintenance management system according to an embodiment will be described with reference to Fig. 1 to Fig. 11. Reference numeral 1 in Fig. 1 denotes a building maintenance management system (hereinafter referred to as a "management system") used for performing maintenance management of a building, particularly of the exterior walls.

[0017] As shown in Fig. 1, the management system 1 is composed of a central management server SVR (hereinafter referred to as server SVR) connected to a network and equipped with a database 2 in which structural information of the exterior walls of buildings and the like is recorded, and a number of personal computers P, P, .... The personal computers P (terminals) exchange data with the server SVR via the network, and each have a keyboard 3 as an input unit and a display 4 as an output unit. Note that it is sufficient to have at least one personal computer P, and furthermore, the terminal on which the application is installed is not limited to a personal computer and may be a smartphone, tablet PC, etc.

[0018] In this embodiment, the management system 1 is used mainly by employees of a construction company or a management company to perform maintenance management of the exterior walls of buildings owned by clients, such as reinforced concrete apartment buildings. The database 2 stores structural information by allocating property identification information to each building, and the property identification information is associated with the identification information of the owner of the building.

[0019] In detail, the database 2 is composed of a basic information data section 2A that stores structural information of the exterior walls at the time of new construction, a condition data section 2B, a maintenance menu data section 2C, and a building information data section 2D. In addition to the database 2, the server SVR is equipped with a calculation means 5. The calculation means has a function as a deterioration prediction section, which will be described later.

[0020] The server SVR in the management system 1 uses various information input from the personal computer P to output building deterioration prediction information (prediction information). An employee uses the personal computer P to input information about buildings owned by customers. Reference numeral 10 in FIG. 3 denotes a maintenance information screen (hereinafter simply referred to as "information screen") displayed on the personal computer P connected to the server SVR. The server SVR has a function as an FTP server, and is configured to reference the layout data of the information screen 10 from a storage means (not shown) and output the information screen 10 to the personal computer P connected to the server SVR via the Internet.

[0021] First, a case where new building information is registered will be described. In this embodiment, an example will be described where information on a building with an exterior as shown in FIG. 2 is input. Building A in FIG. 2 has exterior walls that face roughly one of four directions (N, S, E, W). An employee uses a personal computer P to input information as appropriate into the input section of the information screen 10. The information input into the input section of the information screen 10 is sequentially transmitted from the personal computer P to the server SVR via the Internet.

[0022] The information screen 10 includes a basic information section 14, a condition data input section 15, and a prediction display section 16, each of which constitutes an input section for inputting basic information about a building.

[0023] First, the orientation designation unit 11, which is an input unit for designating the orientation of the exterior walls constituting the condition data input unit 15, will be described. The orientation designation unit 11 can input a top view of the building, i.e., an image display of each exterior wall, and can also input an orientation display 12 for each exterior wall. The orientation display 12 can input an indication of the orientation, such as "north face", and an angle that the exterior wall faces when the south is used as the reference. Although not shown here, an indication of the orientation, such as "north face", can be selected and input using a pull-down menu or the like. Furthermore, in addition to inputting the angle, for example, the inclination angle of the exterior wall can also be input, and this allows for more accurate deterioration prediction processing by using the variable of the inclination angle in the information on the annual amount of solar radiation stored in the condition data unit 2B, which will be described later in detail.

[0024] Based on receiving the information input to the direction display 12, the calculation means 5 displays, as the identification name 13, N for the exterior wall facing north, W for the exterior wall facing west, S1 and S2 for the two exterior walls facing south, and E1 and E2 for the two exterior walls facing east. This makes it possible to distinguish between them at a glance. The condition information input to the direction designation unit 11 is transmitted to the server SVR, and the server SVR stores the received condition information in the condition data unit 2B.

[0025] The basic information section 14 is designed to allow input of basic information such as information on the owner of the building, the number of units, the structure, the finishing materials used at the time of new construction, etc. The server SVR stores the received basic information input to the basic information section 14 in the basic information data section 2A.

[0026] The calculation means 5, which is the deterioration prediction unit of the server SVR, starts deterioration prediction processing based on receiving at least the basic information input to the basic information unit 14 and the condition information input to the direction designation unit 11.

[0027] As shown in Fig. 6, the calculation means 5 of the server SVR causes the prediction display unit 16 on the information screen 10 to output a deterioration prediction display 17 as a result of the deterioration prediction process. The deterioration prediction display 17 mainly shows an index of carbonation of the concrete that constitutes the exterior wall, and is displayed as a graph showing a time series of elapsed years on the x-axis and the degree of deterioration, which is the progress of carbonation, on the y-axis. The graph shows the boundaries of the recommended maintenance period on the y-axis, and it is possible to confirm the timing at which the recommended maintenance period will be reached for each exterior wall in each direction.

[0028] The deterioration prediction output as deterioration prediction display 17 is calculated by a unique algorithm based on the large amount of basic information about the building stored in the basic information data section 2A and accumulated maintenance example data, using values ​​calculated from the basic information stored in the basic information data section 2A and the conditions of the direction facing the exterior wall, which will be described later.

[0029] As shown in the graph of the deterioration prediction display 17 in FIG. 6, there is a difference in the timing at which the maintenance recommendation period is reached for each exterior wall with a different orientation. This shows that the orientation of the exterior wall mainly affects the difference in annual solar radiation. FIG. 5 is a table showing an example of annual solar radiation for each regional information and orientation, and such annual solar radiation information is stored in the condition data section 2B. The calculation means 5 derives the annual solar radiation for each orientation of the exterior wall from the condition data section 2B based on the regional information of the building site contained in the basic information and the orientation of the exterior wall. The derived annual solar radiation is displayed in the column 20a of "solar radiation by orientation" in the condition display 20 (see FIG. 4).

[0030] In addition, in the condition data section 2B, a predetermined coefficient is set for the annual amount of solar radiation. For example, a coefficient of 0.9 is set if the annual amount of solar radiation is less than 20 kWh / m2, and a coefficient of 1.2 is set if the annual amount of solar radiation is 30 kWh / m2 or more. The calculation means 5, which is the deterioration prediction section, multiplies a value calculated from the basic information stored in the basic information data section 2A by this annual amount of solar radiation coefficient, and outputs the result as a deterioration prediction display 17.

[0031] In this way, the rate of deterioration, which differs depending on the direction the exterior wall faces, such as the amount of solar radiation, is taken into account, and deterioration of the exterior wall is predicted for each direction, making it possible to accurately evaluate the condition of the exterior wall according to the location of the building.

[0032] The prediction display section 16 of the information screen 10 displays a maintenance proposal display 18 having a construction information input section 19. The construction information input section 19 is displayed for each direction that the exterior wall faces, and construction information to be used for preventive repairs can be input. For example, in FIG. 4, construction information "thick coating material (general paint)" is input to the construction information input sections 19 corresponding to all exterior walls. The construction information input section 19 is designed to allow the construction information referenced from the maintenance menu data section 2C of the server SVR to be appropriately selected and input using a pull-down menu or the like.

[0033] The calculation means 5, which is the deterioration prediction unit of the server SVR, performs deterioration prediction based on the basic information input to the basic information unit 14, the condition information input to the direction designation unit 11, and the construction information input to the prediction display unit 16. Since preventive repairs slow down the progress of neutralization of the exterior wall, the calculation means 5 uses the construction information input to the prediction display unit 16 to create a graph to be displayed on the deterioration prediction display 17.

[0034] Figure 6 shows a deterioration prediction display 17 for when maintenance using "thick coating material (general paint)" is applied to all exterior walls at the current timing, and a proposal display 18 showing the next recommended maintenance time for each exterior wall. Here, it shows that exterior walls S1 and S2 will reach the next recommended maintenance time in 12 years at the earliest.

[0035] In addition, the timing of the recommended maintenance period for each exterior wall can be adjusted by changing the construction information input to the prediction display unit 16. For example, as shown in FIG. 7, when construction information "waterproof multi-layer coating material E (high durability coating material)" is input to the construction information input unit 19 corresponding to the exterior walls S1 and S2 and the exterior walls E1 and E2, and construction information "thick coating material (general paint)" is input to the construction information input unit 19 corresponding to the exterior walls N and W, the deterioration prediction display 17' and the proposal display 18' in this case are displayed. From these displays, it can be seen that the exterior walls S1 and S2 will reach the next recommended maintenance period in 20 years, the exterior walls E1 and E2 will reach the next recommended maintenance period in 22 years, the exterior wall N will reach the next recommended maintenance period in 25 years, and the exterior wall W will reach the next recommended maintenance period in 21 years.

[0036] According to this, by applying "waterproof multi-layer coating material E (high durability coating material)" to exterior walls S1 and S2 and exterior walls E1 and E2, which deteriorate relatively quickly due to differences in solar radiation, and applying "thick coating material (general paint)" to exterior walls N and W, which deteriorate relatively slowly, it is possible to bring the timing of the recommended maintenance periods for all of these exterior walls closer together (here, 20 years). This makes it possible to propose a reduction in repair costs over a long span of time, as the work can be completed all at once.

[0037] As shown in FIG. 7, the prediction display unit 16 can simultaneously display deterioration prediction displays 17, 17' and proposal displays 18, 18' which show different results by inputting different construction information into the construction information input unit 19, thereby making it possible to make comparative proposals for maintenance based on the construction information to be adopted.

[0038] The calculation means 5, which is the deterioration prediction unit of the server SVR, receives at least the basic information input to the basic information unit 14 and the condition information input to the direction designation unit 11, and when it receives condition information other than the condition information input to the direction designation unit 11, it updates the deterioration prediction information using the condition information.

[0039] For example, if there is a possibility of salt damage, this becomes condition information related to deterioration prediction. The surrounding environment of the target building can be input to the condition data input unit 15. As shown in Fig. 8, if there is a special environment (a coast here) around the image display of the building, an image display 21 of the coast can be input to the condition data input unit 15.

[0040] Furthermore, if there is a special environment (here, a neighboring building) around the image display of the building, the image display 22 of the neighboring building can be input (see FIG. 10). This image display 22 of the neighboring building can be input only if it satisfies the condition that the building has an exterior wall that is a predetermined ratio or more in height to the height of the exterior wall of the building within a predetermined distance from the exterior wall of the building.

[0041] When the coast image display 21 is input, the calculation means 5 of the server SVR forms a row for "salt damage (distance from the sea)" in the condition display 20. The employee inputs information on the distance between the coast and the property and the presence or absence of an obstruction (condition information) into the input section 20c corresponding to the row for "salt damage (distance from the sea)". As shown in Fig. 9, the condition data section 2B stores predetermined coefficients set according to the information on the distance between the coast and the property and the presence or absence of an obstruction, and the calculation means 5 derives a coefficient according to the input information on the distance between the coast and the property and the presence or absence of an obstruction, and performs multiplication when predicting deterioration.

[0042] 10, when the image display 22 of the nearby building is input, the calculation means 5 of the server SVR forms a column 20b of "rain exposure" in the condition display 20, and displays "not exposed" for the exterior walls (here, exterior walls S1 and E1) that face the image display 22 of the nearby building within a predetermined distance. A predetermined coefficient for the case where there is no rain exposure, that is, when the building is not exposed, is set and stored in the condition data section 2B, and the calculation means 5 derives a coefficient for the exterior walls whose rain exposure status is determined to be "not exposed" and performs multiplication when predicting deterioration.

[0043] In Fig. 10, because it has been determined that exterior walls S1 and E1 will not be exposed to rain, the deterioration prediction displays 17, 17' and the suggested displays 18, 18' have changed. In more detail, the displays have been updated so that the number of years until the recommended maintenance period for exterior walls S and E is extended by two years, and the maintenance cycle is extended accordingly.

[0044] Note that the above are just examples of special environments that exist around the image display of a building, for which coefficients are stored in the condition data section 2B. Other examples include the presence or absence of a windbreak, whether or not the building faces a main road, etc.

[0045] The server SVR also includes a building information data section 2D that stores information on the occupants of buildings that are rental properties (not shown), and the calculation means 5 multiplies a coefficient corresponding to the occupancy rate of the rental property stored in the condition data section 2B when predicting deterioration. The occupant information is input from an input screen (not shown) displayed on a personal computer and transmitted to the server SRV. The higher the occupancy rate, the greater the impact on the structure of the building, and the greater the load on the common areas in particular. Therefore, by taking this occupancy rate into consideration when predicting deterioration, it is possible to provide accurate maintenance management and maintenance proposals for the exterior walls. In addition, the maintenance timing of the exterior walls can be evaluated and determined based on the relationship between the exterior and the occupants, such as the load of the number of occupants in the building and the beautification performance related to the occupancy rate.

[0046] The buildings under management are also inspected periodically. At that time, cracks in the exterior walls are measured as shown in Figure 11. Employees can input the actual crack measurement information measured on the exterior walls for each direction unit on an input screen (not shown) and send it to the server SVR. The "crack" referred to here means either the "crack depth" or the "water penetration depth", or both.

[0047] Although not shown here, the calculation means 5 receives actual measurement value information of cracks in each direction unit in the exterior wall, and calculates a prediction score for each exterior wall that predicts the progress of concrete neutralization from this actual measurement value information.The calculation means 5 then compares this prediction score with deterioration prediction information output based on other condition information, corrects the deterioration prediction information by, for example, averaging so that the difference between them becomes small, and outputs the corrected deterioration prediction information.

[0048] According to this, deterioration prediction information predicted from structural information of the exterior wall is corrected based on the progress of concrete neutralization predicted from actual crack measurements, thereby enabling an accurate evaluation of the condition of the exterior wall.

[0049] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention also includes modifications and additions that do not deviate from the gist of the present invention.

[0050] For example, in the above embodiment, the calculation means 5, which is the deterioration prediction unit of the server SVR, is configured to perform deterioration prediction based on the basic information input to the basic information unit 14 and the condition information input to the direction designation unit 11, as well as the construction information input to the prediction display unit 16, and create a graph to be displayed on the deterioration prediction display 17, that is, the deterioration prediction display 17 is deterioration prediction information on the premise that maintenance will be performed first at the time of proposal based on the input construction information, but it may also be configured to display the deterioration prediction display 17 even if construction information is not input to the prediction display unit 16, that is, even if maintenance is not performed at the time of proposal. According to this, it is possible to propose the necessity of early maintenance by comparing with deterioration prediction information for when maintenance is not performed at the time of proposal.

[0051] Furthermore, the deterioration prediction information predicted and output by the calculation means 5 is not limited to a graph like the deterioration prediction display 17, but may be, for example, in the form of numerical values ​​or text.

[0052] Further, the output unit for the deterioration prediction information is not limited to the display 4 of the personal computer P, but may be, for example, a communication unit that transmits an image of the deterioration prediction information by email.

[0053] Furthermore, the central management server SVR of the management system 1 may be configured from a plurality of servers.

[0054] In addition, the actual measured value of the crack may be automatically measured from an image of the crack location captured by an imaging device and automatically transmitted to the server SVR.

[0055] Furthermore, the deterioration prediction information to be output is not limited to the progress of concrete neutralization, but may be prediction information on deterioration due to, for example, acrylic-silica reaction or frost damage.

[0056] Furthermore, on the information screen 10, the display of N, S, E, and W indicating the directions may be omitted, and the target surface may be classified according to the angle at which the target surface faces, with south (S) being 0°.

[0057] Furthermore, the information on the annual amount of solar radiation does not have to be stored in the condition data section 2B of the database 2, and may be acquired by accessing data stored in another server, for example, outside the company, from the server SVR.

[0058] The server SVR may be configured to be capable of accepting changes to coefficients that are preset according to the direction that the exterior wall faces, such as the amount of annual solar radiation.

[0059] 12, the server SVR may be configured to receive input of building information on the structural framework at the time of new construction and store it in the basic information data section 2A, and by using this building information on the structural framework at the time of new construction, the calculation means 5, which is the deterioration prediction section, may perform more accurate deterioration prediction. Such detailed building information at the time of new construction can only be managed if the construction company at the time of new construction consistently handles the subsequent maintenance management, and the specifications of this management system are particularly useful for the special construction companies mentioned above. [Explanation of symbols]

[0060] 1. Building maintenance management system 2A Basic Information Data Section 2B Condition data section 2C Maintenance Menu Data Section 2D Building Information Data Department 3. Keyboard (input section) 4 Display (output section) 5. Calculation means (deterioration prediction unit) 10 Information Screen 11 Direction designation section 12 direction display 14 Basic Information Department 15 Condition data input section 16 Prediction display section 17 Deterioration prediction display 18 Suggestion display 19 Construction information input section 20 Condition display 21,22 Image display Building A N,S,E,W Outer wall P Computer SVR Central Management Server

Claims

1. A building maintenance management system for performing maintenance management of the exterior walls of a target building, An input unit that receives input of structural information of an exterior wall of the building; a deterioration prediction unit that classifies the input structural information of the exterior wall by orientation and predicts deterioration due to aging for each orientation; an output unit that outputs prediction information by the deterioration prediction unit; A building maintenance management system comprising:

2. The building maintenance management system described in claim 1, characterized in that when the input structural information of the exterior wall includes area information regarding the neighboring environment in which the building is located, the deterioration prediction unit corrects the prediction information with a coefficient that is pre-assigned to each of the area information, and the output unit re-outputs the corrected prediction information.

3. The building maintenance management system described in claim 1, characterized in that when the deterioration prediction unit receives material information to be used for maintenance of the exterior wall from the input unit, it outputs the prediction information when the material information is used from the output unit.

4. The input unit is capable of receiving information about residents of the building, 2. The building maintenance management system according to claim 1, wherein the deterioration prediction unit updates the prediction information based on a change in the occupant information and outputs the updated information from the output unit.

5. The building maintenance management system described in claim 1, characterized in that when the deterioration prediction unit receives actual measurement value information of cracks in the exterior wall for each azimuth unit from the input unit, it corrects the prediction information based on the actual measurement value information and outputs it from the output unit.

6. The building maintenance management system described in claim 1, characterized in that the deterioration prediction unit is equipped with a similar property search function, and when a similar property exists, prediction information including past prediction information predicted for the property and maintenance details performed is output from the output unit.

7. A building maintenance management system as described in any one of claims 1 to 6, characterized in that the output unit is a display that displays the predicted information in a graph showing the relationship between the number of years elapsed and the depth of neutralization of the concrete constituting the exterior wall.

Images