JP2002117125A - Method and device for calculating running costs of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for calculating running cost which includes a rough estimate amount of running cost required for maintenance or report corresponding to a layout after the construction of a building. SOLUTION: In this method for calculating running cost of building, while previously storing standard maintenance cost of each component of the building to a maintenance cost storage means 16f, the standard maintenance cost for each of components comprising the real building are read from the maintenance cost storage means and successively summed by a running cost calculating means 16k so that a standard running cost for the entire building can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for calculating a running cost of a building, which calculates the running cost required for maintaining and repairing a building such as a house in accordance with the layout of the building and the attached facilities. Things.

[0002]

2. Description of the Related Art Conventionally, when constructing a house, a user makes arrangements with a person in charge of a building company to arrange a layout or the like.
ed Design) In addition to creating design drawings using a system, etc., construction costs are estimated according to the design details.

In recent years, before a formal design drawing is created using a CAD system or the like, a person in charge of a building company simply designs a floor plan using a notebook-type personal computer or the like, and estimates a rough estimate of building costs. Things have also been done.

[0004]

By the way, after actually constructing a house, various running costs such as utility costs, material costs for repairs, and labor costs for repairs are required. Varies depending on the layout of the house and the attached facilities. However, conventionally, when designing a house, since only the construction cost, which is the initial cost, is estimated, unexpectedly high running costs may be required after actually building the house.

Accordingly, the present invention provides a running cost calculation method and a running cost calculation method capable of easily calculating an approximate estimated running cost required for maintenance and repair after building a house or the like in accordance with a floor plan or the like. It is a technical problem to provide such an apparatus.

[0006]

In order to solve the above-mentioned problems, a method for calculating a building running cost according to claim 1 of the present invention reduces a standard repair cost for each component that can be used for building a building. The repair cost is stored in advance in the repair cost storage means, and the standard repair cost for each component constituting the actual building is read out from the repair cost storage means and sequentially added by the running cost calculation means, whereby the standard for the entire building is obtained. The running cost, which is a typical repair cost, is calculated. Here, “components” include not only building materials such as wall materials and flooring materials, but also equipment such as plumbing equipment and air conditioners, and further include components such as gardens attached to the outdoor side of the building. It also includes elements.

[0007] Claim 2 of the present invention relates to a computer-readable recording medium in which a program for causing a computer to execute the method according to claim 1 is recorded.

According to a third aspect of the present invention, there is provided an apparatus for calculating a running cost of a building, comprising: a repair cost storing means for storing a standard repair cost for each component usable for building the building; Running cost calculation means for calculating the standard repair cost of the building as a whole by reading the standard repair cost from the repair cost storage means and sequentially adding the same. It is.

According to a fourth aspect of the present invention, there is provided a building running cost calculating apparatus according to the third aspect, wherein the repair cost includes a material cost for replacing each component and a labor cost required for the repair. Things.

According to a fifth aspect of the present invention, there is provided a building running cost calculating apparatus according to the third or fourth aspect, further comprising a resource usage amount storage means for storing a standard resource usage amount for each room and ancillary equipment of the building, The running cost calculation means reads out the resource usage according to the actual floor plan of the building and the attached equipment from the resource usage storage means to calculate the resource usage fee for the entire building, and adds the resource usage fee to the calculated resource usage fee. The running cost is calculated by adding the standard repair cost as a whole. Here, the “resources” mainly include water resources and energy resources (such as electricity and gas),
“Resource usage fee” mainly means a usage fee for water and energy.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, FIGS. 1 and 2
When displaying a house (building) scheduled to be built by the customer K in the display room 1 as a CG image (image by computer graphics) in addition to the estimated building cost (initial cost) of the house, as shown in FIG. In addition, an estimate of running cost, which is a cost necessary for maintenance and repair after construction, can be presented. The details will be described below.

In the display room 1, pivotable doors 2 are provided in the vicinity of two corner portions thereof, and a rear (lower in FIG. 2) wall 3 has a vertically movable blind 4a. A long window 4 is formed in the front part (upper part of FIG. 2)
A rectangular screen 5 is fitted into the wall 3. The screen 5 is, for example, a large screen having a size of about 100 inches or more (the number of pixels is, for example, 1280 × 1
024 dots or more).

A projector 7 (projector) having, for example, three projection tubes 6 is installed near the ceiling of the rear wall 3 of the display room 1, and a CG image is projected from the projector 7 toward the screen 5. It has become so. Note that a separate projection room may be provided on the back side of the screen 5 to project a CG image from the back side of the screen 5.

In the display room 1, a plurality of chairs 8 and a table 9 for use by a customer K or the like who views a CG image projected on a screen 5 are arranged. A display device 1 such as a CRT (Cathode Ray Tube) in a workstation 11 (computer) for creating a CG image related to a house to be built by a customer K and displaying the CG image on a screen 5
2 (display means), a keyboard 13 and a mouse 14 as input devices of the workstation 11 are provided.

Below the auxiliary table 15 arranged near the corner of the display room 1, an arithmetic processing unit 16 constituting the main body of the workstation 11 is installed. 5 for appropriately printing an image displayed on the display 5
A scanner 18 for taking in an image is mounted on the workstation 11.

As shown in FIG. 3, the arithmetic processing unit 16 comprises:
A control unit 16a for receiving input data from the keyboard 13 and the mouse 14 and outputting data to the screen 5 and the display device 12, a storage unit 16b, and a calculation unit 16c
And Specifically, in the storage unit 16b, a shape data storage unit 16d that stores three-dimensional shape data of each part of the house created by the control unit 16a based on inputs from the keyboard 13 and the mouse 14, Initial construction cost calculation unit price table 16 that stores unit price data for various rooms or attached facilities of different uses or sizes, which is input from the mouse 14 via the control unit 16a.
e.

Further, the storage unit 16b stores the keyboard 1
3 and a repair cost calculation table 16f (repair cost storage means) for storing standard repair costs for each component usable for construction of a house, which are input from the mouse 14 via the control unit 16a. A resource usage storage unit 16g storing standard resource usage for each room and attached facilities of the house input through the unit 16a, and construction costs and running costs calculated for each house. And a cost storage unit 16h.

On the other hand, the calculation unit 16c generates CG image data in accordance with the movement or stop of the viewpoint set for the three-dimensional shape data read out from the shape data storage means 16d via the control unit 16a. The unit price table 1 for the initial construction cost calculation shows the role as the CG image data generating means 16i and the unit price for each room or accessory equipment constituting the actual house.
It has a role as construction cost calculation means 16j which reads out from 6e via the control unit 16a and sequentially adds up the construction cost to calculate the construction cost of the whole house.

The arithmetic unit 16c reads out the standard repair cost for each component constituting the actual house from the repair cost calculation table 16f via the control unit 16a, and sequentially adds them, thereby obtaining the entire house. In addition to finding the standard repair cost, the resource usage according to the actual house layout and attached facilities is read out from the resource usage storage means 16g, and the resource usage fee for the entire house is calculated. It also has a role as running cost calculating means 16k for calculating running costs by adding to the standard repair costs for the entire house.

The CG image data generated by the CG image data generating means 16i is transmitted to the screen 5 via the control unit 16a.
And the CG image is displayed on the display device 12, and the construction cost calculated by the construction cost calculation means 16j and the running cost calculated by the running cost calculation means 16i are also displayed on the screen 5 via the control unit 16a. The information is output to the device 12 and displayed.

The unit price table 16 for calculating the initial construction cost
e is, more specifically, a plurality of types of houses T1, T2, T3 ... (specific appearances are not shown) prepared in advance by a building company. The unit price is stored in a list format. here,
Table 1 shows a part of a unit price list for a house of type T1 in the unit price table 16e for calculating initial construction costs.

[0022]

[Table 1]

"Main body construction" in the unit price table 16e
Costs (unit price) are material costs and labor costs for constructing a housing body such as a foundation, a skeleton, and a roof. Unit prices for each room include material and labor costs for building each room, and unit prices for auxiliary equipment such as air conditioners include the cost of auxiliary equipment and construction costs such as installation. I have.

The repair cost calculation table 16f includes:
The standard repair costs for each component of the house are stored for each of the house types T1, T2, T3,. Here, a part of the repair cost for each component of the type T1 house is illustrated in Table 2.

[0025]

[Table 2]

The unit price table 16 for calculating the initial construction cost
While e stores the unit price of each room, the repair cost calculation table 16f stores the unit price of each subdivided component such as wallpaper and flooring material. The reason is that, for the initial construction cost, if presented for each component such as wallpaper and flooring, the number of items becomes too large and complicated, and the components of the room such as wallpaper and flooring within the unit price of each room This is because it is convenient to present all of the unit prices.

On the other hand, repair (replacement, etc.) after construction is not necessarily performed collectively for all the components of any room, but is performed for each component such as wallpaper and flooring. Therefore, the unit price of each component is stored. The repair of each component is not always performed for the entire room. For example, only a part of the “floor material” in a certain room may be repaired (replaced). Repair costs.

Further, as shown in Table 2, the expected average repair (replacement) cycle for each component is stored in the repair cost calculation table 16f. For example, an average repair cycle of “wallpaper (for living room)” of “10 years” means that the “wallpaper” needs to be replaced once every “10 years” on average.

The resource usage storage means 16g stores a standard resource usage calculated for each room and attached facilities in a house in a table format. For example, Table 3 shows a part of the resource usage table for each room and accessory equipment in the type T1 house. Since the resource usage fluctuates according to the season, here, the expected total usage for one year is divided by twelve months, and shown as an average value per month.

[0030]

[Table 3]

Although not specifically shown, the resource use amount storage means 16g stores the correspondence between the use amount and the usage fee for each resource such as electricity, gas, and water (water supply). As a result, if the resource usage amount of the whole house is calculated, the resource usage fee of the whole house is obtained. The unit price table 16e for calculating the initial construction cost and the resource usage storage unit 16g both store predetermined data in each room unit, and may be integrated.

The arithmetic processing unit 16 has a house data creation program P1 for creating three-dimensional shape data representing the house by creating a plan view or the like representing the floor plan of each house and the arrangement of equipment and the like. Based on the three-dimensional shape data, a CG image generation program P2 for describing each part of the house as a moving image or a still image as a CG image and performing a walk-through, and an initial construction cost of the house are calculated based on a floor plan or the like. At the same time, a cost calculation program P3 for calculating running costs after construction is
It is installed from an appropriate recording medium such as a ROM. In practicing the present invention, the processing described below can be executed using a so-called personal computer in addition to the workstation 11.

The procedure for displaying a CG image in the display room 1 and presenting the initial construction cost and running cost will be described below. As shown in FIG. 4, before the customer K visits the display room 1, the operator S of the building company displays a plan view of each floor of the house H of the customer K to be built on the display device 12 of the workstation 11. In the image display area A1 of the displayed plan view creation screen G1, the tool is created using tools R (buttons, selection columns, etc.) displayed in the tool display area A2 on the right side.

Although the procedure for creating this plan view is not described in detail, a desired type of the customer K, for example, a type, is selected from the plurality of types T1, T2, T3,. After selecting T1, using the room selection field S2 in the tool display area A2, “room name” and “room size”
, And the layout of the room can be designed only by designating the position of the “room” in the image display area A1 with the mouse 14 or the like. Further, the auxiliary equipment can be arranged only by specifying the “type” of the “auxiliary equipment” to be arranged in each room or the like and the position in the room using the auxiliary equipment selection field S3.

Since each room and accessory equipment used in the above-described design are created in advance as three-dimensional shape data having height dimensions, only a plan view as shown in FIG. 4 is created for each floor of the house. Thus, three-dimensional shape data of houses and equipment is created.

Although not described in detail, the three-dimensional shape data is subjected to a coloring process for each component of the house (wallpaper, flooring material, etc.), and this coloring data is added to the three-dimensional shape data together with the three-dimensional shape data. The data is stored in the data storage unit 16d. As the coloring data, in addition to the coloring data indicating the surface condition of each component (wallpaper, flooring material, etc.) of the house at the beginning of the building, the coloring data indicating the surface condition of each component after aging has occurred. Also, a plurality of items are created, such as a state of five years after construction and a state of ten years after special.

When the creation of the three-dimensional shape data of the house is completed, the construction cost calculation means 16j reads out the unit price of each room or accessory equipment included in the layout of the designed house, and sums these to obtain the house cost. The estimated construction cost as a whole is calculated, and stored in the cost storage means 16h together with the unit price for each room name in a list format.

Table 4 below exemplifies a list of estimated construction costs of the house shown in FIG. 4. The control unit 16a responds to a request from the operator S, for example, a click on the cost display button B1. The list is displayed on the screen 5 and the display device 12. The construction cost can be displayed to the customer K at any time before or after the walk-through described later or during the walk-through. If the floor plan is changed through a walk-through or the like, the construction cost is estimated again.

[0039]

[Table 4]

The running cost calculating means 16k
Calculates the approximate total running cost within the expected life expectancy of a completely designed house. Here, the total running cost is calculated as the sum of the total repair cost and the total resource usage fee (such as utility costs) within the expected average life.

First, as for the total repair cost, for example, when the average expected life of a type T1 house is set to 60 years, 6
The average required repair and recovery for each component in the zero year is calculated, multiplied by the repair cost per repair, and stored in the cost storage unit 16h. Part of the process of calculating the total repair cost is illustrated in Table 5 below. The unit price in Table 5 is obtained by multiplying the repair cost per unit area of each component by the area requiring repair (normally, the area of the entire component).

[0042]

[Table 5]

Table 5 above shows the total repair cost for 60 years, which is the expected life expectancy of the house shown in FIG.
A list is displayed on the screen 5 and the display device 12 in response to a request from the operator S using the keyboard 13 or the like. Actually, the required repair cost can be calculated for each predetermined period such as every year or every ten years, stored, and displayed.

Subsequently, the running cost calculation means 16k calculates the resource usage fee. In this calculation, only the resource usage of the room included in the floor plan of the house is read out from the resource usage table exemplified in Table 3 above, and as shown in Table 6 below, each item ( Calculate the total resource usage for each (electricity, gas, water, etc.).

The resource usage fee corresponding to the total resource usage for each item is read from the resource usage storage means 16g to calculate the total resource usage fee, and added to the total repair cost obtained as described above. By adding, an expected total running cost is calculated. The total resource usage fee and the estimated total running cost are also displayed on the screen 5 and the display device 12 when the operator S clicks the cost display button B1 or the like. The display of the running cost can also be performed for the customer K at any time such as before or after a walk-through described later or during the walk-through. If the layout is changed through a walk-through or the like, the running cost is calculated again.

[0046]

[Table 6]

The walk-through procedure performed when the customer K visits the display room 1 will be described below. First, the principle of displaying the inside and outside of the house planned to be built by the customer K on the screen 5 as a moving image or a still image as a CG image for the walkthrough will be briefly described.

Assuming that the three-dimensional shape data representing a house is simplified to correspond to, for example, the shape shown by D in FIG. 5, the viewpoint is V, and the gazing point is U. The direction is from V to the gazing point U. When generating an image when the viewing direction E is viewed from the viewpoint V as a CG image, a quadrangular pyramid F corresponding to a predetermined viewing angle is set with the viewing direction E as the center line in the horizontal direction and the vertical direction,
A two-dimensional image obtained by projecting a region included in the quadrangular pyramid F in the three-dimensional shape data D onto a projection plane G (a cross section of the quadrangular pyramid F) is cut out, and an image (H section in FIG. reference)
Are displayed as a walk-through CG image Q on the screen 5 or the like in FIG.

The calculation for generating the CG image Q based on the viewpoint V and the line-of-sight direction E is executed by the CG image generating program P2. In addition, for example,
When the viewpoint V is advanced, the area included in the quadrangular pyramid F in the three-dimensional shape data D is reduced, so that the CG image Q depicts a state closer to the house. In this way, according to the forward or backward movement of the viewpoint V or the change of the line of sight E, the inside and outside of the house is displayed as a moving image or a still image by the CG image.

Hereinafter, a specific walk-through procedure will be described. When the walk-through button B2 is clicked in the tool display area A2 shown in FIG. 4 or the like, the walk-through screen G2 shown in FIG. 6 is displayed, and the created plan view is reduced and displayed in the pop-up display A4. Here, when the operator S sets the viewpoint V and the gazing point U which are the reference of the CG image generation, a virtual image when the gazing point U is viewed from the viewpoint V is displayed on the initial screen of the walkthrough by the CG image. (Perspective diagram) is displayed in the image display area A1. In FIG.
A walk-through screen when the viewpoint V and the gazing point U are set in the living room is illustrated.

At the time of the walk-through, the operator S operates the buttons B3 to B5 of the tool display area A2 such as "left rotation", "right rotation", "up rotation", "down rotation", "forward", "backward" and the like. When the movement of the viewpoint V and the change of the line-of-sight direction D are performed by, for example, appropriately clicking the button B8, the change of the viewpoint V and the line-of-sight direction E on the image display area A1 and the screen 5 is performed accordingly. Thus, the interior of the house or the like is displayed as a moving image or a still image by the CG image Q.

That is, when the “forward” or “backward” button B 7 or B 8 is clicked, the viewpoint V moves forward or backward. Will be. FIG. 7 shows a state where the viewpoint V is advanced from the state of FIG. In addition, "left rotation" or "right rotation"
When the buttons B3, B4, etc. are clicked, the line-of-sight direction E changes to the left or right, and the CG image displayed on the image display area A1 and the screen 5 changes accordingly.

In displaying the CG image, usually, by clicking the initial building button B10 on the walk-through screen G2, a CG image representing the state of each part of the house at the beginning of the construction is displayed. On the other hand, the aging column B11
Then, when the number of years elapsed since construction, for example, “10 years after construction” is selected and a walk-through is performed, as shown in FIG. The CG image in a state where the aging has occurred is displayed.

In the state of FIG. 8, when the user wants to repair (replace) the wallpaper W on the CG image Q, after clicking the repair button B12, the user clicks the wallpaper W to be repaired on the screen. As shown in FIG. 9, the state where the wallpaper W is newly replaced is displayed as the CG image Q, and the cost required for repairing the wallpaper W is displayed by the pop-up display P. In the above description, the repair of the wallpaper W on the CG image Q has been described as an example. However, the repair of the ceiling material C and the floor material Y can also be performed on the CG image Q, and in this case, the repair cost is displayed. Is done.

[0055]

As described above, according to the first aspect of the present invention,
The method of calculating the running cost of a building is such that the standard repair cost for each component that can be used for building the building is stored in advance in the repair cost storage means, and the standard repair cost for each component that constitutes the actual building is stored. Since the repair cost is read from the repair cost storage means and sequentially added by the running cost calculating means, the running cost, which is the standard repair cost for the entire building, is calculated.
For example, prior to construction of a building, it is possible to estimate not only the construction cost, which is the initial cost, but also the running cost.

This makes it possible to determine a floor plan or the like in consideration of whether the running cost is a reasonable price or not, and to consider a long-term plan in consideration of costs required at each stage of the building life cycle. You will be able to design buildings under the outlook. In addition, even for a building that has already been constructed, by estimating the running cost according to the present method, an outline of the repair cost that will be required in the future can be predicted in advance.

A second aspect of the present invention relates to a computer-readable recording medium which records a program for causing a computer to execute the method according to the first aspect, and installs the program in the computer from the recording medium. This makes it possible to execute the useful running cost calculation method described above.

A third aspect of the present invention is a building running cost calculating device, comprising: repair cost storage means for storing a standard repair cost for each component usable for building a building; And a running cost calculation means for calculating a running cost which is a standard repair cost of the whole building by sequentially reading out the standard repair cost of the above from the repair cost storage means and sequentially adding the same. It is possible to determine the floor plan etc. in consideration of whether the running cost after construction is not only a reasonable price but also the construction cost which is a cost, so the cost required at each stage of the building life cycle can be determined. Building designs can be designed from a long-term perspective. Also, for already constructed buildings,
With this apparatus, by estimating the running cost, it is possible to predict in advance the outline of the repair cost required in the future.

According to a fourth aspect of the present invention, there is provided a building running cost calculating apparatus according to the third aspect, wherein the repair cost includes a material cost for replacement of each component and a labor cost required for repair. And accurate estimation of repair costs including labor costs.

According to a fifth aspect of the present invention, there is provided a building running cost calculating apparatus according to the third or fourth aspect, further comprising a resource use amount storage means for storing a standard resource use amount for each room and ancillary equipment in the building. The running cost calculation means reads out the resource usage according to the actual floor plan of the building and the attached equipment from the resource usage storage means to calculate the resource usage fee for the entire building, and adds the resource usage fee to the calculated resource usage fee. Since the running cost is calculated by adding the standard repair cost as a whole, the running cost is calculated by taking into account not only the repair cost but also the usage fee of resources such as water and energy. Costs required for maintenance and management can be more accurately estimated.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a display room used in an embodiment of the present invention.

FIG. 2 is a schematic plan view showing the display room.

FIG. 3 is a block diagram showing an internal configuration of an arithmetic processing unit arranged in the display room.

FIG. 4 is an explanatory diagram showing a plan view creation screen displayed on a display device connected to the arithmetic processing unit.

FIG. 5 is an explanatory diagram showing a principle of generating a CG image by the arithmetic processing device.

FIG. 6 is an explanatory diagram showing a state where a walk-through screen is displayed on the display device.

FIG. 7 is an explanatory diagram showing a state where the viewpoint is advanced by the walk-through.

FIG. 8 is an explanatory view showing a state in which a secular change has occurred in a house displayed by the walk-through, as a CG image.

FIG. 9 is an explanatory diagram showing a state in which wallpaper is repaired in the CG image of FIG. 8;

[Explanation of symbols]

 11 Workstation (computer) 16f Repair cost calculation table (repair cost storage means) 16g Resource usage storage means 16k Running cost calculation means

Claims (5)

[Claims] 1. A standard repair cost for each component which can be used for building a building is stored in advance in a repair cost storage means, and a standard repair cost for each component constituting an actual building is stored. A running cost calculation method for a building, wherein a running cost, which is a standard repair cost for the entire building, is calculated by reading out from the repair cost storage means and sequentially adding the running cost to the running cost calculation means. 2. A computer-readable recording medium on which a program for causing a computer to execute the method according to claim 1 is recorded. 3. A repair cost storage means for storing a standard repair cost for each component which can be used for building a building, and a standard repair cost for each component which constitutes an actual building. A running cost calculation device for a building, comprising: a running cost calculation unit that calculates a running cost, which is a standard repair cost of the whole building, by reading from a storage unit and sequentially adding the running costs. 4. The building running cost calculation device according to claim 3, wherein the repair cost includes a material cost for replacement of each component and a labor cost required for the repair. 5. A resource use amount storage means for storing a standard resource use amount for each room of a building and for each attached facility, wherein said running cost calculating means comprises an actual floor plan of the building and resource use according to the attached facility. Reading the amount from the resource usage storage means and calculating the resource usage fee for the entire building, and adding the standard repair cost for the entire building to the calculated resource usage fee to calculate the running cost. The running cost calculation device according to claim 3 or 4, wherein: