Architectural design device and program

Abstract

To provide a building design device and a program for highly accurately acquiring greenhouse gas emissions of a building along with structural calculation execution results and providing a designer therewith.SOLUTION: A building design device 1 includes: a structural calculation execution part 111 for executing structural calculation based on calculation information input to an input receiving part 115; an emission calculation part 112 for acquiring greenhouse gas emissions for every structural member based on type information and dimension information of the structural member input to the input receiving part 115 and the type information and unit emission information of the structural member stored in a storage part 12, and summing up these emissions to acquire greenhouse gas emissions of a building; and a display control part 114 for executing control to display structural calculation execution results executed in the structural calculation execution part 111 and the greenhouse gas emissions of the building acquired in the emission calculation part 112.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building design device and a program. [Background technology]

[0002] There is a global demand to reduce greenhouse gas emissions in order to prevent climate change caused by global warming. Therefore, there is a demand to reduce supply chain emissions, which are the total of all emissions related to business activities, not just the emissions of the business itself. Supply chain emissions include Scope 1 emissions, which address greenhouse gas emissions (direct emissions) associated with the business's own fuel combustion and industrial processes, Scope 2 emissions, which address greenhouse gas emissions (indirect emissions) associated with the use of energy such as electricity, heat, and steam supplied by other companies, and Scope 3 emissions, which address other greenhouse gas emissions related to the business's activities (indirect emissions other than Scope 1 and 2).

[0003] In the field of architecture, efforts are being made to objectively evaluate greenhouse gas emissions during the construction stage and to link them to reductions in order to reduce greenhouse gas emissions. For example, Patent Document 1 discloses a configuration for calculating the amount of carbon dioxide emissions during the construction stage of a water treatment facility based on the amount of construction materials and energy used in the construction of the facility. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-126843 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the field of architecture, it is desirable to be able to complete the design in a short period of time by repeatedly evaluating the structural safety and earthquake resistance of a building and considering necessary corrections and improvement measures, as in the case of structural calculations performed in a BIM (Building Information Modeling) simulation. In addition, since it is highly likely that a monetary value will be created for greenhouse gas emissions in the near future, as exemplified by carbon pricing, which puts a price on carbon, it is desirable to be able to calculate greenhouse gas emissions with high accuracy. In other words, in the field of architecture in recent years, it is desirable to be able to calculate greenhouse gas emissions of a building with high accuracy and provide them to designers along with the results of structural calculations.

[0006] However, in the configuration of Patent Document 1, it is necessary to calculate the amount of carbon dioxide emissions in addition to the structural calculations, making it difficult to complete the design in a short period of time.

[0007] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a means for determining with high accuracy the greenhouse gas emissions of a building along with the results of structural calculations and providing this to designers. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention has the following configuration.

[0009] a storage unit that stores type information of structural members which are major parts of a building in terms of structural strength, and unit emission information that is associated with the type information and indicates an emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the structural members; an input receiving unit that enables receiving input of calculation information necessary for the structural calculation, including the type information and dimensional information of the structural member; a structural calculation execution unit that executes the structural calculation based on the calculation information input to the input reception unit; an emission calculation unit that calculates the greenhouse gas emission amount for each structural member based on the type information and the size information of the structural member inputted to the input receiving unit and the type information and the unit emission information of the structural member stored in the storage unit, and calculates the greenhouse gas emission amount of the building by summing up these emission amounts; a display control unit that controls the display of the execution result of the structural calculation executed by the structural calculation execution unit and the greenhouse gas emission amount of the building calculated by the emission calculation unit; An architectural design device comprising:

[0010] According to the above configuration, the greenhouse gas emissions of a building can be calculated with high accuracy together with the results of structural calculations and provided to the designer. Effect of the Invention

[0011] According to the present invention, the greenhouse gas emissions of a building can be calculated with high accuracy together with the results of structural calculations and provided to the designer. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a block diagram showing an example of a hardware configuration and a software configuration of a building design device according to this embodiment. [Diagram 2] FIG. 2 is an explanatory diagram showing the recorded contents of the emission calculation data table. [Diagram 3] FIG. 3 is an explanatory diagram showing the display contents of the display device. [Figure 4] FIG. 4 is a flowchart of a building design program. [Diagram 5] FIG. 5 is a block diagram showing an example of the hardware configuration of a building design device and a building design server according to a modified example of this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

[0014] (Building design equipment 1) As shown in Fig. 1, the building design device 1 according to this embodiment is configured to perform structural calculations for a building and to calculate the greenhouse gas emissions of the building. As a specific example, the building design device 1 has a storage unit 12 that stores type information of structural members that are major parts of a building in terms of structural strength, and unit emission amount information that is associated with the type information and indicates the emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the structural members.

[0015] The storage unit 12 is composed of a RAM (Random Access Memory) and a hard disk. The storage unit 12 is also connected to a structural member manufacturing company A31, a structural member manufacturing company B32, a structural member manufacturing company C33, and a structural member sales company 34 so as to be able to communicate data via a communication unit 13 provided in the building design device 1 and an information and communication network 2 such as the Internet. Each of the companies A31 to C33, 34 updates various information such as structural member type information and unit emission information stored in the storage unit 12, and is provided with a means for storing information in the storage unit 12. The storage unit 12 may be a data server 6 in FIG. 5 connected to the information and communication network 2, separate from the building design device 1.

[0016] Here, "buildings" include bridges, theaters, sports facilities, airport terminals, hotels, office buildings, public facilities (libraries, hospitals, schools, etc.), commercial facilities (shopping malls, supermarkets, etc.), factories, and two- or three-story houses. "Structural calculations" are processes that precisely calculate the strength of buildings through allowable stress calculations, allowable stress calculations, horizontal strength calculations, and other calculations (ultimate strength calculations and time history response analysis). "Greenhouse gases" are gases that bring about the greenhouse effect by absorbing some of the infrared rays emitted from the earth's surface. Examples include water vapor, carbon dioxide, methane, nitrous oxide, and fluorocarbons.

[0017] "Major structural parts" are defined in Article 1, Paragraph 1, Item 3 of the Enforcement Order of the Building Standards Act, and are important structural parts of a building that support the building from its own weight, loads, and external forces such as earthquakes. Examples of "structural members" include foundations, foundation piles, walls, columns, trusses, bases, diagonal members, floor slabs, roof slabs, and cross members. "Non-structural members" are members other than structural members used in buildings, and examples include ceiling materials, floor materials, partition walls, and exterior walls. Furthermore, non-structural members also include equipment and furniture.

[0018] "Type information" is information for identifying the content and type of structural and non-structural components, and corresponds to the product number determined by the manufacturing company or sales company. For example, in the case of long structural and non-structural components, information is used to identify the thickness, width, standard length at the shipping stage, material, etc. "Emissions due to manufacturing" refers to greenhouse gas emissions during the manufacturing stage of structural and non-structural components. For example, this means that greenhouse gases are emitted during various processes, such as the preparation process of raw materials, processing process, and molding process, included in the manufacturing process of structural and non-structural components.

[0019] "Emissions per unit dimension" refers to greenhouse gas emissions in units of longitudinal length (e.g., 10 mm or 10 cm) for structural and non-structural components that are irregular in the longitudinal direction. Since the thickness, width, and material are specified by the identification information, greenhouse gas emissions can be calculated from the longitudinal dimension alone. For structural and non-structural components that are irregular in two dimensions, the greenhouse gas emissions are in units of width and length. For structural and non-structural components that are irregular in three dimensions, the greenhouse gas emissions are in units of thickness, width, and length. Furthermore, for non-structural components such as equipment and furniture that are handled while maintaining the shape they were in when shipped, "emissions per unit dimension" refers to greenhouse gas emissions in units of number, such as one piece or one unit. In other words, "unit dimension" means the longitudinal dimension if the structural or non-structural component is linear, the length and width dimensions if the component is planar, the thickness, width and length dimensions if the component is three-dimensional, and further, the number in the case of components that are handled while maintaining their shape at the time of shipment.

[0020] The building design device 1 also includes an input accepting unit 115 that enables the input of calculation information required for structural calculation, including type information and dimensional information of structural members, to be accepted; a structural calculation execution unit 111 that executes structural calculation based on the calculation information input to the input accepting unit 115; an emission calculation unit 112 that calculates the greenhouse gas emission amount for each structural member based on the type information and dimensional information of the structural member input to the input accepting unit 115 and the type information and unit emission information of the structural member stored in the memory unit 12, and calculates the greenhouse gas emission amount of the building by summing up these emissions; and a display control unit 114 that controls the display of the results of the structural calculation executed in the structural calculation execution unit 111 and the greenhouse gas emission amount of the building calculated in the emission calculation unit 112.

[0021] According to the above configuration, structural calculations are performed using calculation information including type information and dimensional information of structural members, and greenhouse gas emissions can be calculated with high accuracy at almost the same time by using the calculation information used in the structural calculations and the unit emission amount information in the storage unit 12. This makes it possible to calculate the greenhouse gas emissions of a building with high accuracy and provide them to the designer along with the results of the structural calculations.

[0022] Furthermore, the building designing apparatus 1 has an input device 14 connected to the input receiving unit 115, and a display device 15 connected to the display control unit 114. Examples of the input device 14 include a keyboard, a mouse, a touch panel, and a voice input device. Examples of the display device 15 include a liquid crystal display device. This allows the building designing apparatus 1 to be configured with an information processing device such as a general personal computer, laptop computer, smartphone, tablet terminal, etc. Note that the building designing apparatus 1 may lack at least one of the input device 14 and the display device 15, in which case the input device 14 and the display device 15 are provided in an external terminal not shown.

[0023] (Data table 121 for calculating emissions) The storage unit 12 stores information (data) such as unit emission amount information in a format corresponding to the emission amount calculation data table 121. To give a specific example, as shown in Fig. 2, the emission amount calculation data table 121 has a structural member / non-structural member item, a type item, a greenhouse gas item, a unit emission amount item, and a unit price item, each of which is associated with each other. The data area for the structural member / non-structural member item stores name data of either a structural member or a non-structural member. For example, name data of structural members such as beams and columns is stored, and name data of non-structural members such as ceiling materials is stored.

[0024] The data field for the type item stores identification information of the company that manufactured or sold the structural or non-structural component. For example, in the case of structural component manufacturing company A31, identification information of A001 is assigned. In the case of structural component sales company 34, identification information of B002 is assigned. The data field for the greenhouse gas item stores type data of greenhouse gas. For example, type data of carbon dioxide, methane, nitrous oxide, etc. is stored. The data field for the unit emission item stores unit emission data such as 2.34 (Kg) or 2.56 (Kg) as the emission amount per unit dimension of the structural or non-structural component. The data field for the unit price item stores unit price data such as 3,200 yen or 4,200 yen as the unit price per unit dimension of the structural or non-structural component.

[0025] As a result, when a beam is specified as a type item, the emission amount calculation data table 121 makes it possible to read out all types, greenhouse gases, unit emission, and unit price corresponding to the beam from the storage unit 12. Furthermore, when carbon dioxide is specified as a greenhouse gas in addition to a beam, data corresponding to the beam and carbon dioxide can be read out. In other words, the emission amount calculation data table 121 makes it possible to narrow down the data corresponding to the specified item. As a result, for example, it is possible to narrow down a wide variety of structural members and then select the structural member that is most suitable for the design specifications of a building based on the relationship between the amount of greenhouse gas emission and the unit price of the structural member.

[0026] (Example of display on the display device 15) As shown in Fig. 3, the display device 15 is capable of displaying a drawing display section 151, an information display section 152, and a member selection section 153 as display windows. The sections 151, 152, and 153 are displayed using data stored in the video RAM of the display control section 114. The drawing display section 151 is an area for displaying design drawings such as floor plans and structural drawings. The information display section 152 has a structural calculation display section 1521, a greenhouse gas display section 1522, a detail display section 1523, and a cost display section 1524.

[0027] The structural calculation display section 1521 is an area that displays the results of structural calculation. The greenhouse gas display section 1522 is an area that displays the amount of greenhouse gas emissions. This allows the information display section 152 to provide the designer with the results of structural calculation in the structural calculation display section 1521, while at the same time providing the designer with the amount of greenhouse gas emissions in the greenhouse gas display section 1522. The detail display section 1523 is an area that displays the amount of greenhouse gas emissions for each structural member, as well as type information and unit emission information for the structural members. The cost display section 1524 is an area that displays the costs of structural members and non-structural members.

[0028] The member selection section 153 is an area that displays some or all of the data in the emission calculation data table 121 in FIG. 2. When some of the data is displayed in the member selection section 153, the data can be scrolled up and down or left and right. The display device 15 is preferably equipped with a touch panel so that each part of the drawing can be specified while visually checking the drawing in the drawing display section 151. When a specific part of the drawing displayed in the drawing display section 151 is specified, the display device 15 preferably highlights detailed information of the structural member or non-structural member corresponding to the specified part in the member selection section 153. For example, when a beam in the floor plan displayed in the drawing display section 151 is touched, the beam at the touched part is preferably changed to a specified color such as red, and the information corresponding to the beam is preferably highlighted in the member selection section 153. In addition, when a structural member or non-structural member is selected in the member selection section 153, the information corresponding to the selected structural member or non-structural member is preferably highlighted. Examples of the highlighting mode include a means for surrounding all the corresponding information with a selection frame 1531-1532 and a means for changing the background color.

[0029] The above-described building design device 1 may further include the following configurations 1 to 4.

[0030] (Configuration 1) The display control unit 114 in the building design device 1 may be configured to control the detailed display unit 1523 of the display device 15 to display the greenhouse gas emission amount for each structural member calculated by the emission amount calculation unit 112, and the type information and unit emission information of the structural member stored in the memory unit 12. In this case, by displaying the greenhouse gas emission amount for each structural member, and the type information and unit emission information of the structural member stored in the memory unit 12 on the display device 15, it is possible to make the designer aware of the change in the greenhouse gas emission amount when at least a part of the type information of the structural member displayed on the display device 15 is changed to other type information.

[0031] (Configuration 2) The building design device 1 may be provided with a configuration for calculating the cost of a building. To be more specific, in the building design device 1, the storage unit 12 further stores unit price information that is associated with type information and indicates the unit price per unit dimension of a structural member, and has a cost calculation unit 113 that calculates the cost of each structural member based on the type information and dimension information input to the input reception unit 115 and the type information and unit price information stored in the storage unit 12, and calculates the cost of the building by summing up these costs. The display control unit 114 controls the cost display unit 1524 of the display device 15 to display the cost of each structural member and the cost of the building calculated by the cost calculation unit 113, and the unit price information of the structural members stored in the storage unit 12.

[0032] According to the above configuration, the cost of each structural member and the cost of the building, as well as the unit price information of the structural members stored in the memory unit 12, are further displayed on the display device 15, thereby making it possible to make the designer aware of the change in cost and the change in greenhouse gas emissions when at least a portion of the structural member type information displayed on the display device 15 is changed to other type information.

[0033] (Configuration 3) In the building design device 1, the display control unit 114 may have a configuration for controlling the display content of the display device 15 to display the display content before and after the change in parallel. Specifically, the information display unit 152A after the change in the display content and the information display unit 152B before the change in the display content may be arranged in parallel. According to the above configuration, the display content before and the display content after the change are displayed in parallel on the display device 15, so that the designer can easily recognize the change in the display content. It is preferable that the information display unit 152A and the information display unit 152B are horizontally scrollable in the left and right directions so that the designer can compare the pre-change content and the post-change content even for changes made three or more times ago.

[0034] (Configuration 4) The building design device 1 may be configured to calculate the total greenhouse gas emission amount of the building including the structural members and the non-structural members. Specifically, the storage unit 12 further stores type information of the non-structural members that are not important in terms of structural strength, and unit emission information associated with the type information and indicating the emission amount per unit dimension of the greenhouse gas emitted due to the manufacture of the non-structural members. The input reception unit 115 is capable of further receiving input of the type information and dimension information of the non-structural members. The emission amount calculation unit 112 calculates the greenhouse gas emission amount for each non-structural member based on the type information and dimension information of the non-structural members input to the input reception unit 115 and the type information and unit emission information of the non-structural members stored in the storage unit 12, and the sum of these emissions and the emission amount of the building is set as the total emission amount. The display control unit 114 controls the greenhouse gas display unit 1522 of the display device 15 to display the total emission amount calculated by the emission amount calculation unit 112.

[0035] According to the above configuration, the total greenhouse gas emissions of a building, including non-structural components, can be calculated with high accuracy together with the results of structural calculations and provided to the designer.

[0036] (Control unit 11: Architectural design program) 1, the structural calculation execution unit 111, emission calculation unit 112, cost calculation unit 113, display control unit 114, and input reception unit 115 in the building design device 1 may be configured as either hardware or software. Each of these units 112 to 115 constitutes at least a part of the control unit 11. When each of the units 112 to 115 is configured as software, the control unit 11 is made to execute a building design program that performs structural calculations for the building and calculates the greenhouse gas emissions for the building.

[0037] To explain more specifically using Figure 4, the building design program causes a computer that stores type information of structural components that are the main parts of a building in terms of structural strength, and unit emission information that corresponds to the type information and indicates the emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the structural components, to execute an input receiving step S1, a structural calculation execution step S2, an emission amount calculation step S3, and a display control step S4.

[0038] The input reception step S1 is a process that enables reception of the input of calculation information required for structural calculation, including type information and dimensional information of structural members. The structural calculation execution step S2 is a process that executes structural calculation based on the calculation information entered in the input reception step S1. The emission calculation step S3 is a process that calculates the greenhouse gas emission amount for each structural member based on the type information and dimensional information and the type information and unit emission information entered in the input reception step S1, and calculates the greenhouse gas emission amount of the building by summing up these emissions. The display control step S4 is a process that controls the display of the execution results of the structural calculation executed in the structural calculation execution step S2 and the greenhouse gas emission amount of the building calculated in the emission calculation step S3.

[0039] According to the above program, the greenhouse gas emissions of a building can be calculated with high accuracy together with the results of structural calculations and provided to the designer. Furthermore, by simply installing the program in an information processing device such as a personal computer or tablet terminal, the information processing device can function as the building design device 1. The program may be distributed in a state recorded on a recording medium such as a CD-ROM or USB memory, or may be distributed via a two-way communication network or communication line such as the Internet or a one-way communication network such as a television broadcast.

[0040] (Building design method) A part or all of the steps in the building design program may be configured by hardware. That is, the building design device 1 may be configured to be able to execute the building design method. To be more specific, the building design method is executed in the building design device 1 in which type information of structural members that are the main parts of a building in terms of structural strength and unit emission amount information that corresponds to the type information and indicates the emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the structural members are stored in the storage unit 12, and includes an input reception step S1, a structural calculation execution step S2, an emission amount calculation step S3, and a display control step S4.

[0041] (Modification) In the above description, the building design device 1 is described as having a display device 15 and an input device 14, but the present invention is not limited to this. That is, as shown in FIG. 5, a building design server 4 having the functions of the building design device 1 and a terminal device 5 having the display device 15 and the input device 14 may be connected to each other so as to enable data communication by wire or wirelessly. The building design device 1 may be used as the building design server 4 and connected to the terminal device 5 so as to enable data communication by wire or wirelessly. The building design server 4 has a storage unit 12, a communication unit 13, and a control unit 11. The control unit 11 is configured to execute the processing of the input reception unit 115, the processing of the structural calculation execution unit 111, the processing of the emission calculation unit 112, the processing of the display control unit 114, and the processing of the cost calculation unit 113. The terminal device 5 may be, for example, a general stationary information processing device, a mobile terminal device such as a smartphone, or a tablet terminal.

[0042] Furthermore, a data server 6 storing information on the emission calculation data table 121 may be provided separately from the memory unit 12 of the building design server 4. The data server 6 is connected to the building design server 4 and the structural member manufacturers A31-33, etc., so as to be able to communicate data via wired or wireless communication. The data server 6 has a larger storage capacity than the memory unit 12 of the building design server 4 and the memory unit 12 of the building design device 1, and is configured to execute update processing and storage processing of the information on the emission calculation data table 121.

[0043] As a result, even if information is frequently updated by many companies 31-33, 34, the data server 6 executes the update processing, preventing a decrease in calculation processing in the building design server 4 and the building design device 1. The data server 6 stores all information such as the emission calculation data table 121, and the building design server 4 and the building design device 1 appropriately read out frequently used information or information necessary for processing from the data server 6, thereby executing structural calculations, emission calculations, and cost calculation processing and update processing in a short time, and the execution results are displayed on the terminal device 5 and the building design device 1.

[0044] It should be noted that within the scope of the concept of the present invention, a person skilled in the art may come up with various modifications and alterations. It is understood that such modifications and alterations fall within the scope of the present invention. For example, even if a person skilled in the art appropriately adds, deletes, or modifies the design of the above-described embodiment, or adds, omits, or modifies the conditions of a process, these modifications and alterations are included in the scope of the present invention as long as they include the gist of the present invention. [Explanation of symbols]

[0045] 1 Building design equipment 11 Control section 111 Structural Calculation Department 112 Emissions Calculation Department 113 Cost Calculation Department 114 Display control unit 115 Input reception section 12 Storage section 121 Data table for calculating emissions 13. Communications Department 14 Input Devices 15 Display device 2. Information and Communications Network 4. Architectural Design Server 5 Terminal Equipment 6 Data Server

Claims

1. A storage unit that stores type information of structural components of a building and unit emission information that is associated with the type information and indicates an emission amount of greenhouse gases emitted due to the manufacture of the structural components; an emission calculation unit that calculates the greenhouse gas emission amount for each structural component based on the unit emission information stored in the storage unit that corresponds to the type information of the structural component inputted by the input receiving unit, and calculates the total emission amount of the greenhouse gas emitted due to the manufacture of all of the structural components targeted in the building by summing up these emission amounts; Equipped with The storage unit further stores type information of non-structural members including equipment, furniture, etc. that are not essential to the structural strength, and unit emission information associated with the type information and indicating an emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the non-structural members, The input receiving unit is further capable of receiving input of the type information and dimension information of the non-structural member, The emission calculation unit calculates the greenhouse gas emission amount for each non-structural component based on the type information and the dimension information of the non-structural component input to the input receiving unit, and the type information and the unit emission information of the non-structural component stored in the memory unit, and calculates the sum of these emissions and the total emission amount as the total emission amount.

2. The building design device as described in Claim 1, characterized in that it is further characterized by being equipped with a display control unit that controls the display of the greenhouse gas emission amount for each structural component calculated in the emission calculation unit, and the type information and unit emission information of the structural component stored in the memory unit.

3. The storage unit further stores unit price information corresponding to the type information and indicating a unit price per unit dimension of the structural member, a cost calculation unit that calculates the cost of the building by calculating the cost for each structural member based on the type information and the unit price information input to the input reception unit and the type information and the unit price information stored in the storage unit, and adding up these costs; The building design device according to claim 2, characterized in that the display control unit controls the display of the cost of each structural member and the cost of the building calculated in the cost calculation unit, and the unit price information of the structural members stored in the memory unit.

4. 3. The architectural design device according to claim 2, wherein the display control unit controls the display content before the change of the display content and the display content after the change to be displayed in parallel.

5. The building design device as described in Claim 2, characterized in that the display control unit controls the total emission amount calculated in the emission amount calculation unit to be displayed.

6. A computer in which type information of structural members of a building and unit emission information corresponding to the type information and indicating an emission amount of greenhouse gas emitted due to the manufacture of the structural members are stored in a storage unit, an emission calculation step is executed to calculate the greenhouse gas emission amount for each structural member based on the unit emission information stored in the storage unit that corresponds to the type information of the structural member inputted by the input receiving unit, and to calculate the total emission amount of the greenhouse gas emitted due to the manufacture of all of the structural members targeted in the building by summing up these emission amounts; In the emission calculation step, a program for calculating the greenhouse gas emission amount for each non-structural component based on the type information and dimension information of the non-structural components further received by the input receiving unit and the type information and unit emission information of the non-structural components stored in the memory unit is referenced to type information of non-structural components, including equipment, furniture, etc. that are not an important part of the structural strength, which is further stored in the memory unit, and unit emission information that indicates the emission amount per unit dimension of greenhouse gases emitted due to the manufacture of the non-structural components, and for calculating the greenhouse gas emission amount for each non-structural component based on the type information and dimension information of the non-structural components further received by the input receiving unit and the type information and unit emission information of the non-structural components stored in the memory unit, and for calculating the sum of these emissions and the total emission amount as the total emission amount.

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