Wall cost estimation support device, building cost estimation support device, and computer program

Abstract

To improve the efficiency of estimation work, and the efficiency of estimation checking work.SOLUTION: A wall estimation support device comprises: fittings specification means of specifying an area of a site including fittings on a wall of a building by an operation from an operator, with respect to a design drawing of the building outputted by an output monitor; fitting dimension calculation means of calculating the vertical and horizontal dimensions of the fittings from the area specified by the fitting specifying means, using a screen scale ratio for converting specified line segments into actual dimensions while the design drawing is output to the output monitor; and dimension output means of outputting the vertical and horizontal dimensions of the fittings calculated by the fitting dimension calculation means to the output monitor.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a quantity estimation supporting technology for simply executing quantity estimation carried out at the stage of wall design and estimation in the architecture and construction industries for constructing buildings.

Background Art

[0002] A building is composed of several building elements such as foundations, walls, columns, and roofs, and each building element is configured using various types of members. Therefore, when performing estimation or cost calculation, it is necessary to quantify and sum up the unit prices and quantities of members including various types of members.

[0003] The work of quantity estimation requires an extremely large amount of time and labor if performed manually. In addition, it is also necessary to perform work to check whether there are any errors in this work. Therefore, the necessity (significance) of reducing this quantity estimation work is extremely high.

[0004] The procedure of designing, estimating, and checking the estimation result for a wall of a building will be described in further detail with reference to FIG. 1. In the design stage, the wall is designed on the premise of physical conditions such as physical outer dimensions, required strength, lighting amount, and functions such as entrances and exits, and with consideration of material conditions such as the types of walls available as building materials, and the types and numbers of fittings such as windows and doors.

[0005] A designer completes design drawings by considering physical and material conditions while exerting individuality such as design sense. When actual construction is to be carried out based on the completed design drawings, it is necessary to confirm how much cost will be required. The work of estimating the cost in this case is called "quantity estimation". In many cases, adjustments between the quantity estimation result and the budget, as well as design-related requests from the client after reviewing the design drawings, are fed back, and redesign is performed.

[0006] As mentioned earlier, the cost estimation process involves the cost estimater manually measuring the dimensions of the joinery from the design drawings and determining the actual dimensions from the scale of the design drawings. Then, referring to the specific product numbers of the joinery, the cost is calculated by multiplying the number by the type of joinery. For walls, the total wall area is calculated by subtracting the total area of ​​fixtures from the wall's length and width dimensions, and the price is calculated by multiplying this by the price per unit area corresponding to the actual type of wall. This work is done by inputting data into a spreadsheet application.

[0007] Patent Document 1 discloses a building cost estimation processing system in which, prior to creating cost estimation data on the CAD system side, a hearing process is performed through dialogue with the customer (construction company, etc.) to obtain information on the cost estimation specifications required by the customer. Then, based on that information, the cost estimation specifications are narrowed down to only those required by the customer, thereby creating efficient cost estimation data.

[0008] The aforementioned building cost estimation processing system presents customers with a hierarchical selection screen, allowing them to easily select the necessary specifications from a variety of building specifications for each item for which cost estimation data is created. Based on the selected specifications, the system can then extract data from CAD design data.

[0009] While it is possible to perform accurate cost estimations using CAD design data disclosed in Patent Document 1, the CAD design data also contains data that is not necessary for estimation or cost calculation. Therefore, there was a problem in that it was time-consuming to extract the data necessary for cost estimation.

[0010] Patent Document 2 discloses a building cost estimation system and program that can reduce the effort required to extract the data necessary for cost estimation, thereby shortening working time and suppressing the occurrence of work errors.

[0011] According to the technology disclosed in Patent Document 2, the user's (construction contractor, etc.) operation is mainly drawing, thus reducing the effort and time required for the work. Furthermore, since this drawing operation is simple, such as drawing lines along lines indicating building elements on the design drawing displayed on the screen, and forming drawing areas enclosed by these lines, the occurrence of work errors is also suppressed. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Japanese Patent Publication No. 2007-65806 [Patent Document 2] Patent No. 6293104 [Overview of the Initiative] [Problems that the invention aims to solve]

[0013] The process of estimating wall costs involves many steps, requiring checks by a supervisor. This check involves comparing the design drawings with the calculation sheet to ensure there are no missing or duplicate entries, measurement errors, or misidentification of joinery types. Since estimators rarely keep records of the intermediate stages of their estimations, if the estimator is inexperienced, the supervisor may have to perform the same level of work as the estimator.

[0014] Once the cost estimation for the walls, including the checks, is complete, the client will request a redesign based on budget and design considerations, as mentioned earlier. After the redesign is finished, the cost estimation process is carried out again. This is repeated as needed. In other words, the extremely time-consuming process of checks by cost estimaters and their managers was repeated multiple times before the design was completed. This required a great deal of effort (and corresponding labor costs), and it also took a long time to complete the design.

[0015] As a fundamental problem, when an estimator and / or administrator is unfamiliar with CAD software, quantity estimation work and / or checking work is performed on paper blueprints. Support is needed for digitizing work processes even for people unfamiliar with CAD software.

[0016] The problem to be solved by the present invention is to provide a technology capable of improving the efficiency of wall quantity estimation work and the efficiency of checking work for wall quantity estimation. [[Means for Solving the Problem]]

[0017] In order to solve the aforementioned problem, a first invention relating to a quantity estimation data calculation device, and a second invention relating to a computer program for controlling the quantity estimation data calculation device according to the first invention are provided.

[0018] (First Invention) The first invention comprises: an output monitor that outputs a building blueprint; a fitting designation means for designating an area including a fitting on the wall of the building in the building blueprint output by the output monitor through an operation by an operator; a fitting dimension calculation means for calculating vertical and horizontal dimensions of the fitting from the area designated by the fitting designation means using a screen scale ratio that converts a designated line segment to an actual dimension in a state where the blueprint is output to the output monitor; a dimension output means for outputting the vertical and horizontal dimensions of the fitting calculated by the fitting dimension calculation means to the output monitor; and the present invention relates to a wall quantity estimation support device comprising the above (see FIG. 9).

[0019] (Terminology Explanation) The "blueprint" of a building output by the output monitor of an information terminal may be a PDF file, or may be CAD data saved by CAD software used when creating the blueprint. The term "building" refers to a structure or construction including walls and / or a roof.

[0020] The "fixture specifying means" refers to a means that enables visual distinction between specified locations and unspecified locations by using tools provided in CAD software and the like, such as a line drawing tool, a curve drawing tool, and a free curve drawing tool.

[0021] It is preferable that the "dimension output means" outputs the dimensions in the form of a list when a plurality of fixtures are specified by the fixture specifying means.

[0022] (Function) An output monitor of an information terminal outputs a building blueprint. An operator who performs quantity takeoff work (the quantity surveyor in FIG. 4) specifies a region including a fixture on a building wall via the fixture specifying means. From the region specified by the fixture specifying means, the fixture dimension calculation means calculates the vertical and horizontal dimensions of the fixture using a screen scale ratio. The dimension output means outputs the vertical and horizontal dimensions of the fixture calculated by the fixture dimension calculation means to the output monitor. Only by specifying the installation position of the fixture on the screen can the vertical and horizontal dimensions of the fixture be calculated, thereby reducing the workload of the quantity surveyor.

[0023] (Variation 1 of the first invention) The first invention may further comprise a screen scale ratio storage means that stores the aforementioned screen scale ratio in advance (see FIG. 3).

[0024] (Term Description) The "screen scale ratio storage means" includes a random access memory when the quantity takeoff data calculation device is an information processing device, as well as a secondary storage device (such as a hard disk) when the quantity takeoff data calculation device is an information processing device. In order to store the screen scale ratio, the screen scale ratio storage means may receive the screen scale ratio from an external device, or may be provided with a scale ratio calculation means described later to calculate the screen scale ratio by itself and store the calculated ratio.

[0025] (Function) Since the screen scale ratio is stored in advance in the screen scale ratio storage means, output by the dimension output means can be smoothly performed.

[0026] (Variation 2 of the first invention) The first invention can be formed as follows: In other words, the system is equipped with a scale ratio calculation means for calculating the aforementioned screen scale ratio, The scale ratio calculation means includes a reference point specification means for specifying two reference points in the design drawing output by the output monitor, The reference point specification means includes an actual dimension input means for inputting the actual dimensions of the reference line segment specified by that reference point specification means, The system includes a scaling ratio calculation means that calculates the screen scaling ratio using the actual dimensions and the output length dimensions of the reference line segment output by the output monitor (see Figure 5).

[0027] (Explanation of terms) The "two points" specified by the "reference point designation means" are generally either horizontal or vertical dimensions. However, two points with known angles are also acceptable.

[0028] (action) The operator uses the reference point specification means to specify two reference points in the design drawing output by the output monitor. The operator then uses the actual dimension input means to input the actual dimensions of the reference line segments specified by the reference point specification means. The scaling ratio calculation means calculates the screen scaling ratio using the actual dimensions and the output length dimensions of the reference line segment output by the output monitor. The calculated screen scaling ratio is used in the dimension output means.

[0029] (Variation 3 of the first invention) The first invention can be formed as follows: In other words, the vertical and horizontal dimensions of the joinery output by the dimension output means will be output on the same screen as the design drawing area specified by the joinery specification means.

[0030] The length and width dimensions of the joinery output by the dimension output means are displayed on the same screen as the design drawing area specified by the joinery specification means, making it easier for the operator to work and, for example, to notice errors.

[0031] (Second invention) The second invention relates to a computer program for controlling the wall sizing support device according to the first invention. In other words, the procedure for outputting design drawings of a building, The procedure for specifying joinery involves the operator specifying, through their actions, the parts of the building's walls that include joinery, based on the design drawing output procedure. A door and window dimension calculation procedure that calculates the vertical and horizontal dimensions of a door and window from the area specified in the door and window specification procedure, using a screen scale ratio that converts the specified line segments to actual dimensions when the aforementioned design drawing is output, The dimension output procedure outputs the length and width dimensions of the joinery calculated using the joinery dimension calculation procedure, This is a computer program that is intended to be executed by the wall quantity calculation support device (see Figure 9).

[0032] (Variation 1 of the second invention) The second invention can also be formed as follows: In other words, the procedure for specifying reference points involves specifying two reference points in the design drawing output by the output monitor, The procedure for inputting the actual dimensions of the reference line segment specified in the reference point designation procedure, A scaling ratio calculation procedure that calculates the screen scaling ratio using the actual dimensions and the output length dimension of the reference line segment output by the output monitor. This will also be performed by the aforementioned wall stacking support device.

[0033] (Variation 2 of the second invention) The second invention can also be formed as follows: In other words, the vertical and horizontal dimensions of the joinery output using the aforementioned dimension output procedure will be output on the same screen as the design drawing area specified using the aforementioned joinery specification procedure.

[0034] The computer program according to the second invention can also be provided by storing it on a recording medium. Here, "recording medium" refers to a medium that can carry a program that cannot occupy space on its own. Examples include flexible disks, hard disks, DVD-Rs, and flash memory.

[0035] It is also possible to transmit the computer program relating to the second invention from a computer (or information terminal) storing the program to another computer (including a server) or communication terminal via a communication line.

[0036] The second invention is a computer program, and therefore, a client information terminal may access it via the internet and execute the program on a server. For example, data may be input from the client terminal (information terminal), the computer program may be executed on the server to receive the data, and the output results calculated on the server may be sent back to the client terminal. [Effects of the Invention]

[0037] According to the first invention, a wall cost estimation support device is provided that enables increased efficiency in wall cost estimation work and increased efficiency in checking wall cost estimation. Furthermore, a wall cost estimation device that performs the final cost estimation using the wall cost estimation support device according to the first invention is also included in the present invention. The second invention provides a computer program for calculating calculation data that enables increased efficiency in wall calculation work and increased efficiency in checking wall calculations. Furthermore, a wall calculation program that performs the final calculation using the wall calculation support program according to the second invention is also included in the present invention. [Brief explanation of the drawing]

[0038] [Figure 1] This is a conceptual diagram outlining the current design, cost estimation, and verification (checking) procedures. [Figure 2](a) and (b) are perspective views showing walls in a building, and the walls used in Figure 3 and beyond are the walls viewed from β in (a). [Figure 3] This is a conceptual diagram illustrating the need for scaling correction for design drawings. [Figure 4] This is a conceptual diagram illustrating the procedure for performing scale correction on design drawings. [Figure 5] This is a conceptual diagram showing the before and after of applying scaling correction to design drawings. [Figure 6] This is a conceptual diagram explaining the function for calculating screen size, starting from data processing detection. [Figure 7] This is a conceptual diagram illustrating the preparatory functions for cost estimation support. [Figure 8] This is a conceptual diagram illustrating the procedure (specifying the starting point) for the operator to specify the dimensions of necessary building components (shutters) in cost estimation support. [Figure 9] This is a conceptual diagram illustrating the procedure (endpoint specification) for the operator to specify the dimensions of necessary building components in cost estimation support. [Figure 10] This is a conceptual diagram illustrating the procedure (specifying the starting point) for the operator to specify the dimensions of necessary building components (windows) in cost estimation support. [Figure 11] This is a conceptual diagram illustrating an example where the dimensions of all necessary building components have been specified and the cost estimation has been performed as part of cost estimation support. [Figure 12] This is a conceptual diagram showing an overview of the overall cost calculation based on the cost calculations for walls and fixtures. [Figure 13] This is a conceptual diagram showing a screen where an administrator checks the results calculated by the operator, and an example of how an error was discovered from the output displayed on the screen. [Figure 14] This is a conceptual diagram showing a screen where an administrator checks the results calculated by the operator, and an example of how an error was discovered from the output displayed on the screen. [Figure 15] This is a conceptual diagram illustrating how design, scaling, cost estimation, and checking functions can be performed by different workers. [Figure 16] This is a conceptual diagram illustrating a scenario where one worker handles the design, scaling, and cost estimation functions, while another worker handles the checking process. [Figure 17]This is a conceptual diagram outlining the current design, cost estimation, and verification (checking) procedures. [Figure 18] (a) and (b) are sample drawings of the designed roof. [Figure 19] This diagram shows the work items involved in preparing an estimate for a roof. [Figure 20] This is a conceptual diagram explaining the function for calculating screen size from a data processing perspective. [Figure 21] This is a conceptual diagram showing how a roof drawing is imported into a computer to perform processing in order to correct the screen scale. [Figure 22] This is a conceptual diagram showing how two horizontal points are specified to correct the screen scale. [Figure 23] This is a conceptual diagram showing a screen where you input the dimensions of two specified points in order to correct the screen scale. [Figure 24] This is a conceptual diagram showing the state before and after scaling correction is performed. [Figure 25] This is a conceptual diagram illustrating the procedure (specifying the starting point) for specifying the roof area required in cost estimation support. [Figure 26] This is a conceptual diagram illustrating the procedure for specifying the roof area required in cost estimation support (specifying the endpoint), and how the roof area is calculated once the endpoint is specified. [Figure 27] This is a conceptual diagram showing an operator preparing to count and input the number of spans in order to determine the number of tight frames required for cost estimation support. [Figure 28] This is a conceptual diagram illustrating how, in order to determine the number of tight frames needed for cost estimation support, the total dimensions of the tight frames, the number of B-type tight frames, etc., are automatically calculated once the operator counts and inputs the number of spans. [Figure 29] This is a conceptual diagram illustrating how, in order to determine the number of tight frames required for the calculation of stacking power, the operator counts and inputs the number of tight frames, and the total dimensions of the tight frames, the number of B-type tight frames, etc., are automatically calculated. [Figure 30]This is a conceptual diagram illustrating how a manager checks the results of operations performed by an estimater to support cost estimation, and how errors by the estimater are detected. [Modes for carrying out the invention]

[0039] (Wall cost estimation support) Hereinafter, a wall quantity estimation support application software (hereinafter simply abbreviated as "wall quantity estimation support device application" or "wall quantity estimation support device app") according to an embodiment of the present invention will be described with reference to the drawings (Figures 2 to 16). The present invention is not limited to the embodiments described below, but are illustrative forms for interpreting the present invention.

[0040] (Figure 2) Figure 2 is a perspective view showing a wall in a building. The wall used in Figure 3 and subsequent figures is the wall viewed from point β in Figure 2(a). α, γ, and δ in Figure 2(a) and α, β, γ, and δ in Figure 2(b) are shown for comparative reference only.

[0041] (Figure 3) Figure 3 is a conceptual diagram illustrating the scaling function of design drawings. The information terminal has a wall quantity estimation support application installed. In other words, the information terminal described below is a wall quantity estimation support device. The output screen of the information terminal displays a PDF version of the design drawing, which was scanned from a hard copy. In addition to the design drawing converted to PDF via a scanner, it may also be CAD data saved by the CAD software used to create the design drawing.

[0042] The dimensions shown in the output design drawings often become inconsistent with the scale intended by the designer due to the various processes involved (this is called "scale discrepancy"). "Scale correction" is performed to correct this scale discrepancy.

[0043] The design drawing shown in Figure 3 depicts a wall. Near the center of the bottom edge of this wall is a shutter a, and above shutter a are three windows a1, a2, and a3. Inside these windows a1, a2, and a3 are two windows b1 and b2. Windows a and b are composed of two horizontal members and two vertical members. Shutter a is composed of one horizontal member and two vertical members (note that in Figures 4 and 5, the configuration of these fixtures is omitted).

[0044] The original design drawings show various dimensions, such as the vertical and horizontal dimensions of the walls, the dimensions of each door and window, and the distance between doors and windows. However, in Figure 3, most of these dimensions are omitted. The only dimension shown is the distance between window a1 and window a2, which is indicated as 4600 millimeters. The aforementioned "4600 millimeters" is a dimension determined by the designer, but the length of the line segment represented by that "4600 millimeters" does not match the length calculated from the scale determined by the designer; this is called a "scale discrepancy." The procedure that the cost estimator performs to correct this scale discrepancy is shown in Figure 4 below.

[0045] (Figure 4) Figure 4 shows the process from selecting two points (reference points P1 and P2) on the screen-output design drawing to creating a sample line segment, and then having the sizing engineer input the dimensions determined by the designer for that line segment length. In Figure 4, for ease of illustration, the two points between windows a1 and a2 were used as sample line segments. However, considering the purpose of scale correction, the longer the sample line segment, the more accurate the correction will be.

[0046] (Figure 5) Figure 5 conceptually shows the design drawing before and after scaling correction. If the length of the line segment (reference length) between the two input points (reference points P1, P2) is the input value (4600 millimeters), the scale can be calculated from the input value of the line segment that becomes the reference length and the output value displayed on the screen ("Calculation means 1" in Figure 6). Using that scale, all line segments on the design drawing that was displayed on the screen are re-output ("Calculation means 2" in Figure 6). The re-output design drawing is the "design drawing after scaling correction".

[0047] (Figure 6) Figure 6 conceptualizes the information processing procedure, using the scale correction shown in Figures 3 to 5 as input data (data received), calculation means, and output data (data displayed on the output screen).

[0048] Input data 1 is the output screen of the design drawing, which is described as a PDF file in Figures 3 to 6. Input data 2 includes reference point specification data, which is obtained by specifying two reference points, as well as dimension data entered as the dimension between the two points identified by that reference point specification data.

[0049] Calculation means 1 is a means for calculating the screen scale (screen scaling ratio). Calculation means 2 is a means for recalculating all line segment lengths of the design drawing stored as input data 1, using the screen scale (screen scaling ratio) obtained as a result of the calculation. The screen scaling ratio stored in random access memory or other storage device is used.

[0050] The output data is the scale-corrected design surface, which is generated by redrawing all line segments in the design drawing using the corrected screen scale.

[0051] While Figures 3 to 6 illustrate scaling using horizontal dimensions, it is also possible to perform scaling using vertical dimensions.

[0052] (Figure 7) Figure 7 shows the preparation function for cost estimation. The output screen of the information terminal displays the target drawing, which is the design drawing after scale correction, and the cost estimation table on a single screen. Displaying the target drawing and the cost estimation table on a single screen makes it easier for the cost estimater to work, and also makes it easier for the administrator (see Figure 13), which will be discussed later, to verify the information.

[0053] For the cost estimation sheet, the cost estimater will determine different hatching patterns for each type of joinery so that the joinery can be visually distinguished when the specified range is applied later. Although the illustration shows different hatching patterns for shutter a, window a, and window b, the actual application software will use different colors.

[0054] The items in the cost calculation sheet are exemplified as opening type, joinery type, dimensions, configuration, and cost, but in actual application software, these are not the only items that can be included. In some cases, due to screen display limitations, not all items may be displayed (e.g., Figure 13). Displaying the "amount" would require a price list that is frequently revised, so it may be acceptable to install application software (on an information terminal) that deliberately does not execute the price list or the "amount" based on that price list.

[0055] (Figure 8) Figure 8 shows the screen output displaying the target drawing, where a range selection cursor, which becomes a rectangle when the start and end points are determined, has been used to indicate that the estimator has specified the upper left corner of shutter a in the target drawing as the starting point.

[0056] There are various methods for specifying a range, including tools that draw line segments with each mouse click, tools for drawing curves, and tools for drawing freeform curves. However, the types of these tools are the same as those in CAD software, so a detailed explanation will be omitted.

[0057] (Figure 9) Figure 9 shows the state where the estimator has specified the lower right corner of shutter a in the target drawing as the endpoint, using a range selection cursor where a rectangle represents the specified area when the start and end points are determined. The area enclosed by the rectangle formed by the start point specified in Figure 8 and the endpoint specified in Figure 9 will be displayed with pre-determined hatching.

[0058] The outline of a hatched rectangle is determined by two line segments each on the vertical and horizontal sides. Therefore, the vertical and horizontal dimensions can be calculated using a scale-corrected scale to obtain the actual dimensions. The result of this calculation will be output to the "Dimensions" field in the cost calculation table.

[0059] In the case of a shutter, its "configuration" is indicated as having one horizontal member and two vertical members. In the case of a window, its "configuration" is indicated as having two horizontal members and two vertical members.

[0060] Before using the application shown in this embodiment, cost estimators would measure the dimensions of joinery vertically and horizontally using a scale on printed design drawings, and then multiply these measured values ​​by the scale used in the design drawing to determine the dimensions of the joinery. Although the multiplication part was sometimes performed using spreadsheet software, the measurement with a scale was a tedious task.

[0061] According to this embodiment, actual measurements can be performed using mouse operations on an information terminal, and since scale correction is performed in advance, any errors remaining on the design drawings are cleared beforehand. Furthermore, if the area is specified using the rectangle tool, actual measurements in the vertical and horizontal directions are unnecessary.

[0062] (Figure 10) Figure 10 shows the screen output of the target drawing, immediately after the specification of shutter a and the specification of window a1 have been completed. In the target drawing, window a is shown as having three windows: a1, a2, and a3. To address this situation, although not shown in the illustration, a "repeat function" similar to those found in CAD software is provided. By using this repeat function, it becomes unnecessary to repeat the specified operations in windows a2 and a3.

[0063] (Figure 11) Figure 11 shows the screen output displaying the target drawing, immediately after the specification of shutter b has been completed. The cost calculation sheet has an "amount" column, which displays the cost of shutter a if it were of the specified dimensions, along with the quantity.

[0064] In this embodiment, the system is not configured to automatically calculate the cost based on the type of shutter or window. However, if the information terminal has a table of costs corresponding to the type of shutter or window stored in advance, or if the information terminal can collect such data by accessing a database prepared by the building materials manufacturer, it is certainly possible to enable automatic calculation by specifying the type of shutter or window and its dimensions. Also, although the calculation for entrance doors installed in walls is omitted, these dimensions and other details can be calculated in the same way.

[0065] (Figure 12) Figure 12 conceptually illustrates the method for calculating the total cost of the "wall with built-in fixtures" shown in the design drawings described above. The cost calculation for the "joinery" in the "wall with built-in joinery" shown in the lower half of Figure 12 can be explained up to Figure 11, outlining the steps to its completion.

[0066] The upper half of Figure 12 shows that the calculation for "walls with built-in joinery" is performed by subtracting the area occupied by joinery, as shown in the lower half of Figure 12, from the area of ​​"walls without built-in joinery," which can be calculated using the vertical and horizontal dimensions of the wall.

[0067] (Figure 13) Figure 13 shows a screen where an administrator checks the results calculated by the operator, and an example of how an error was discovered from the information displayed on the screen. In this embodiment of the roof cost estimation support application, the history of work performed by the cost estimater is saved, and the work history can be read out on the output screen as needed.

[0068] The administrator's information terminal displays the final results of the cost estimation process described in Figure 12, which was performed on the estimator's information terminal. Specifically, the screen where the estimator specified the joinery, and the cost estimation sheet created as a result of specifying that joinery, are displayed on a single screen.

[0069] The administrator notices that window a2 is missing from the specifications by checking the output screen obtained by reading the history of when the estimator specified the joinery. In the drawings after the estimator has completed the estimation work, all joinery should have some kind of hatching. However, since window a2 does not have hatching, the omission in the specification can be visually identified.

[0070] Prior to the provision of the application software according to this embodiment, there was no record of whether or not the drawings used by cost estimaters for their estimation work had been measured using a scale. Therefore, it was not easy for managers to discover any omissions made by cost estimaters. The omission shown in Figure 13 can be identified by the administrator as an error by the cost estimater by checking the number of windows 'a' in the cost estimate table, which is displayed on the same screen as the drawing.

[0071] (Figure 14) Figure 14 also shows a screen where the administrator checks the results calculated by the operator, and an example of discovering an error from the output on the screen. Here, it illustrates a case where an error occurred at the stage of specifying the range of the joinery, as explained using Figures 8 and 9.

[0072] The manager examines the drawings completed by the cost estimater and notices something odd: the lower horizontal member of window a is visible in the lower part of the hatched windows a1, a2, and a3. He then checks the dimensions in the cost estimate sheet under the column for window a. He finds that although window a appears vertically elongated on the drawing, its vertical and horizontal dimensions are the same, confirming the cost estimater's error.

[0073] Before the application software according to this embodiment was provided, it would not have been easy for administrators to notice if an estimator had made a mistake like the one shown in Figure 14. This is because there is no record of whether or not the estimator performed actual measurements using a scale on the drawings used in the estimation work.

[0074] Although not shown in the diagram, even if the cost estimater made a mistake by specifying a larger area than the actual area of ​​the joinery, the supervisor could notice because the hatching used in the work is semi-transparent (due to the limitations of the diagram, it is difficult to represent "semi-transparent hatching" as a difference in hatching on the drawing, so examples are not shown).

[0075] (Figure 15) Figure 15 conceptually illustrates the case where the four stages of design, scaling, cost estimation, and checking are performed by different workers.

[0076] The design process involves the designer using their own information terminal (a) to design the building, including walls and roofs, and create a design drawing (ver.1). The scale correction worker then uses their own information terminal (b) to perform scale correction on the design drawing (ver.1).

[0077] Cost estimator (1) performs cost estimation for walls using their own information terminal (c) from wall design drawings corrected with a corrected screen scale ratio. Cost estimator (2) performs cost estimation for roofs using their own information terminal (c) from roof design drawings corrected with a corrected screen scale ratio.

[0078] The administrator receives the wall cost estimation results performed on information terminal (c) and the roof cost estimation results performed on information terminal (d) via information terminal (e), checks the process of each estimation to confirm there are no errors, and corrects the estimation results if any errors are found. Then, transmits the total cost estimation results for the entire building, including the walls and roof, to the information terminal (a) related to the designer.

[0079] The designer, after receiving the cost estimation results, considers revision policies, such as the relationship with the budget, and creates the design drawings (ver.2). From there, the processes of scale correction, cost estimation, and checking remain the same (repeated).

[0080] In the embodiment shown in Figure 15, the wall cost estimation and roof cost estimation are performed by two people, allowing the most time-consuming (often) process to be distributed among them. Therefore, the time required to produce the total cost estimation results for the entire building, including the checks, can be shortened.

[0081] As shown in Figures 3 to 11, the scale correction work may be performed by the cost estimater alone, or it may be performed by the manager.

[0082] (Figure 16) Figure 16 shows a scenario where a designer installs application software for scaling and application software for cost estimation on their own information terminal, and then performs the entire process from design to cost estimation.

[0083] There is a significant possibility that designers may not discover errors even when self-checking their own work. Therefore, managers check the wall and roof cost estimation results on their own information terminals (e) and feed the overall building check results back to the designer's information terminal (a).

[0084] Because the task of cost estimation was not easy, designers rarely performed it themselves. However, by utilizing this invention, performing cost estimation becomes less burdensome, making it easier for designers to perform cost estimation themselves and redesign in consideration of the budget.

[0085] According to the embodiments described above, it was possible to improve the efficiency of the cost estimation work by correcting the scale and specifying the range of joinery, and to improve the efficiency of the cost estimation result checking work by displaying a list of progress records of the cost estimation work.

[0086] (Roof cost estimation support) Hereinafter, a roof cost estimation support application software according to an embodiment of the present invention (hereinafter simply referred to as "roof cost estimation support device application" or "roof cost estimation support device app") will be described with reference to the drawings (Figures 17 to 30).

[0087] (Need for support in roof cost estimation) We have used Figures 1 through 16 to explain the necessity of wall cost estimation support and the means of solving it. However, just as support is needed for wall cost estimation, support is also needed for roof cost estimation. Below, we will explain the necessity of this using Figures 17 through 19.

[0088] The procedure for designing, calculating, and checking the cost of a building's roof will be explained in more detail based on Figure 17. During the design phase, the roof is designed based on physical conditions such as its external dimensions, required strength, amount of natural light, and slope angle, as well as material conditions such as the types of roofing materials available and the types and number of structural members supporting the roof.

[0089] Designers create blueprints, taking into account physical and material conditions, while also showcasing their individual design sense. Now, it's necessary to determine how much it will cost to actually build the structure based on these blueprints. This process of estimating costs is called "cost estimation." In most cases, the cost estimation results are adjusted against the budget, and feedback from the client regarding design aspects is incorporated, leading to redesigns.

[0090] As mentioned earlier, the cost estimation process involves the estimator manually measuring the roof dimensions from the design drawings and determining the actual dimensions from the scale of the design drawings. Then, they refer to the part numbers of specific structural materials (such as tight frames) and calculate the price by multiplying the number of materials by the type of structural material or by the price per unit length of the structural material.

[0091] Regarding the roof, generally, as shown in Figure 18(a), the test specimen is supported by a tight frame positioned between the support beam (frame). To calculate the cost of a single-slope roof like the one shown in Figure 18(b), the following steps were necessary, as shown in Figure 19: The dimensions of the roof were measured from the drawing and the area was calculated (1). The number of support beams was counted and the total dimensions of the tight frames fixed to those beams were calculated (2). The number of B-tight frames was also counted from the drawing (3). Eaves dimensions, gable cap dimensions, and ridge cap dimensions were also measured from the drawing. The price was calculated by multiplying these measured values ​​by the price per unit area of ​​the material and the price per unit of dimension.

[0092] Although not mentioned in Figures 17-19, for the roof, the total wall area is calculated by subtracting the total area of ​​the fixtures from the length and width dimensions of the roof, and then multiplying this by the price per unit area corresponding to the actual type of wall to calculate the price. This work is carried out by inputting data into a spreadsheet application.

[0093] The process of estimating roof costs also involves many steps, requiring checks by a supervisor. This check involves comparing the design drawings with the calculation sheet to ensure there are no missing or duplicate entries, measurement errors, or misidentification of joinery types. Since estimators rarely keep records of the intermediate stages of their estimations, if the estimator is inexperienced, the supervisor may have to perform the same level of work as the estimator.

[0094] Once the cost estimation process, including checks, is complete, the client will request a redesign based on budget and design considerations, as mentioned earlier. After the redesign is finished, the cost estimation process is carried out again. This process is repeated as needed. In other words, the extremely time-consuming process of checks by cost estimaters and their managers was repeated multiple times before the design was completed. This required a great deal of effort (and corresponding labor costs), and it also took a long time to complete the design.

[0095] As mentioned in the section on the need for support in wall cost estimation, there is a fundamental problem with roof cost estimation as well. Specifically, when the estimater and / or manager are unfamiliar with CAD software, the cost estimation and / or checking work remains done on paper, specifically on design drawings. Even those unfamiliar with CAD software need support in digitizing their work processes.

[0096] In roof cost estimation, the aim is to provide technology that can support and streamline the cost estimation work for roofs after or during the design process, and to improve the efficiency of the checking work in the preparation for cost estimation. Therefore, we will explain roof cost estimation support technology using Figures 20 to 30.

[0097] (Figure 20) Figure 20 conceptualizes the information processing procedure, using the scale correction shown in Figures 21 to 24 as input data (data received), calculation means, and output data (data displayed on the output screen). The information terminal has a roof cost estimation support application installed. In other words, the information terminal shown below becomes a roof cost estimation support device.

[0098] Input data 1 is the output screen of the roof design drawing. In Figures 21 to 24, this design drawing is a PDF file. Input data 2 includes reference point specification data, which is obtained by specifying two reference points, as well as dimension data, which is entered as the dimension between the two points identified by that reference point specification data.

[0099] Calculation means 1 is a means for calculating the screen scale (screen scaling ratio). Calculation means 2 is a means for recalculating all line segment lengths of the design drawing stored as input data 1, using the screen scale (screen scaling ratio) obtained as a result of the calculation. The screen scaling ratio stored in random access memory or other storage device is used.

[0100] The output data is the scale-corrected design surface, which is generated by redrawing all line segments in the design drawing using the corrected screen scale.

[0101] While Figures 21 to 24 illustrate scaling using horizontal dimensions, it is also possible to perform scaling using vertical dimensions.

[0102] (Figure 21) Figures 21 to 24 are conceptual diagrams illustrating the scaling correction function. Figure 21 shows the output of a roof (single-slope roof, see Figure 18) from a design drawing loaded into an information terminal. The output screen of the information terminal displays a PDF version of the design drawing, which was scanned from a hard copy. In addition to design drawings converted to PDF via a scanner, the output may also be CAD data saved by the CAD software used to create the design drawing.

[0103] The dimensions shown in the output design drawings often become inconsistent with the scale intended by the designer due to various processes (this is called "scale discrepancy"). "Scale correction" is performed to correct this scale discrepancy. The need for scale correction is the same as in the case of wall quantity calculation support.

[0104] (Figure 22) Figure 22 shows how two horizontal points (reference points P1 and P2) in the screen-output design drawing are used as sample line segments. Considering the purpose of scale correction, the longer the sample line segment, the more accurate the correction will be.

[0105] (Figure 23) Figure 23 conceptually illustrates the process before and after scaling the design drawing. Since the dimension (reference dimension) of the line segment formed by the two input points (reference points P1, P2) is displayed as "18200" in the design drawing, the cost estimator inputs 18200 millimeters.

[0106] (Figure 24) Figure 24 conceptually illustrates how scaling correction is performed. The scale can be calculated from the input value (18,200 millimeters) as the dimension of the reference line segment and the output value displayed on the screen ("Calculation means 1" in Figure 20). Using that scale, all line segments on the design drawing that was displayed on the screen are re-output ("Calculation means 2" in Figure 20). The re-output design drawing is the "design drawing after scaling correction".

[0107] The "scale-corrected design drawing" shown in Figure 24 has the reference line segment set to "horizontal" in the screen output, and at the same time, the eaves side is positioned at the bottom of the screen. This is to suppress subjective errors when the cost estimator performs subsequent work.

[0108] (Figure 25) Figure 25 shows a screen output displaying a roof drawing, where a range selection cursor, which becomes a rectangle when the start and end points are determined, is used, and the estimator has specified the lower left corner of the roof in the target drawing as the starting point. There are various methods for specifying a range, including tools that draw line segments with each mouse click, tools for drawing curves, and tools for drawing freeform curves. However, the types of these tools are the same as those in CAD software, so a detailed explanation will be omitted.

[0109] At the bottom of the same screen, a cost estimation support table is displayed. A cost estimation support table is a table that shows the items necessary for cost estimation and the corresponding figures for those items.

[0110] (Figure 26) Figure 26 shows a range selection cursor where a rectangle represents the specified area when the start and end points are determined, with the estimator specifying the upper right corner of the roof in the target drawing as the end point. The area enclosed by the rectangle formed by the starting point specified in Figure 25 and the ending point specified in Figure 26 will be displayed with a predetermined hatching pattern (or color).

[0111] The outline of a hatched rectangle is determined by two line segments each vertically and horizontally. Therefore, the vertical and horizontal dimensions can be calculated using a scale-corrected scale to determine the actual dimensions. The result of this calculation will be output as "P square meters" in the "roof area" field of the cost calculation table.

[0112] Before using the application shown in this embodiment, cost estimators would measure the dimensions of the roof in both the vertical and horizontal directions using a scale on printed design drawings, and then multiply these measured values ​​by the scale used in the design drawing to calculate the roof area. Although the multiplication part was sometimes performed using spreadsheet software, the actual measurement with a scale was a tedious task.

[0113] According to this embodiment, actual measurements can be performed using mouse operations on an information terminal, and since scale correction is performed in advance, any errors remaining on the design drawings are cleared beforehand. Furthermore, if the area is specified using the rectangle tool, actual measurements in the vertical and horizontal directions are unnecessary.

[0114] (Figure 27) Figure 27 shows how the cost estimator is counting the number of spans, i.e., the spaces between adjacent support beams, in a screen output displaying a roof drawing. The number of support beams is the number of spans plus one. Also, since the vertical dimension of the roof is calculated when the roof area is specified, the total dimension of the tight frame can be calculated.

[0115] Alternatively, the input for the number of spans may be done by having the information terminal automatically extract all the support beams from the roof of the design drawing based on the type of hatching that has been predetermined in the design drawing, and then counting the number of support beams.

[0116] B-tights are to be installed at intervals of 1 meter or less in the span between support beams. Meanwhile, the horizontal dimensions of the roof have already been obtained, and the number of tight frames can also be obtained if the number of spans is entered. Therefore, the total number of B-tights on this roof can be automatically calculated if the number of spans is entered.

[0117] (Figure 28) Figure 28 shows how, when an estimator inputs the number of spans, the information terminal automatically calculates the total dimensions of the tight frames, the number of B-tights, the eaves dimensions, the gable end dimensions, and the ridge end dimensions in the estimation support table.

[0118] "Eaves dimension" refers to the horizontal length (towards the front and downstream) when facing directly towards the eaves (downstream) side. It can be calculated as the same length as one tight frame. If the roof has an irregular shape, it will be the cumulative length of the ridges.

[0119] The "gable end dimensions" can be calculated as twice the vertical length when facing directly towards the eaves (downstream) side. If the roof has an irregular shape, the cumulative length of the ridges is used.

[0120] The "ridge capping dimension" can be calculated as the horizontal length (backward / upward side) when facing directly towards the eaves (downward side). If the roof has an irregular shape, it will be the cumulative length of the ridges.

[0121] If the roof area, total dimensions of the tight frames, number of B-tights, eaves dimensions, gable end dimensions, and ridge end dimensions can be calculated, then the cost estimation procedure simply involves multiplying these by the unit price of each component. Therefore, the roof cost estimation support device and roof cost estimation support software described in this embodiment simplify the process of calculating the quantities of necessary items, thereby making the work that the cost estimater must perform extremely concise.

[0122] (Figure 29) Figure 29 shows an embodiment in which, instead of the estimator counting the number of spans in Figure 27, the number of tight frames is counted and entered. Since the number of tight frames is obtained by adding 1 to the number of spans, the information terminal can automatically calculate the total dimensions of the tight frames, the number of B-tight frames, the eaves dimensions, the gable end dimensions, and the ridge end dimensions in the cost estimation support table, regardless of which is entered.

[0123] (Figure 30) Figure 30 is a conceptual diagram illustrating how a manager checks the results of operations performed by an estimator for cost estimation and discovers errors made by the estimator. Figure 26 shows that the lower left and upper right corners of the roof have been properly designated, while Figure 30 shows that the lower right corner has not been properly designated.

[0124] In this embodiment of the roof cost estimation support application, the history of work performed by the cost estimater is saved, and the work history can be read out on the output screen as needed. Figure 30 shows the output screen obtained when the administrator retrieved the history of when the cost estimator specified the lower left and upper right corners of the roof in order to calculate the roof area.

[0125] The manager can notice the mistake in specifying the lower left of the roof by visually reviewing the work history performed by the cost estimater. Although not shown in the diagram, even if the cost estimater made a mistake by specifying a larger area than the actual roof area, the supervisor could notice because the hatching used in the work is semi-transparent (the diagram of "semi-transparent hatching" is difficult to illustrate, so examples are omitted).

[0126] Incidentally, the distribution of the scaling correction function, calculation function, and checking function explained using Figure 15, and the integration of the scaling correction and calculation function explained using Figure 16, are also effective even when only roof calculations are performed.

[0127] According to the embodiments described based on Figures 17 to 30, it was possible to improve the efficiency of the estimation work by correcting the scale in wall estimation and specifying the range of joinery, and to improve the efficiency of checking the estimation results by displaying a list of progress records of the estimation work.

[0128] Furthermore, it is certainly possible to integrate the wall and roof cost estimation support apps mentioned above and provide them as an integrated support app that allows users to selectively perform cost estimation for walls and roofs.

[0129] In the embodiments described above, the application was referred to as a "cost estimation support application," but not as a "cost estimation application" because outputting the "price" as a result of the cost estimation requires a price list for the materials used. For example, price lists are frequently revised, and the prices of only certain materials may fluctuate depending on special circumstances. On the other hand, the cumbersome aspect of conventional cost estimation work was limited to the stage before using the price list. Therefore, the application was described as a "support application" to indicate that it is possible to improve the efficiency of the cost estimation work regardless of whether a price list is available. Thus, whether or not the price list is installed (or the price database is accessed) so that the final cost estimation can be performed is not the essence of this invention. [Industrial applicability]

[0130] This invention has potential applications in the architecture industry, construction industry, development of application software used for design and cost estimation in architecture and construction, rental of application software, and consulting services related to architecture and construction.

Claims

1. An output monitor that displays the building's design drawings, The output monitor outputs a building design drawing, and the operator uses a means to specify areas including fixtures on the walls of the building through their own operation. With the aforementioned design drawing displayed on the output monitor, a door and window dimension calculation means calculates the vertical and horizontal dimensions of the door and window from the area specified by the door and window specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions. The dimension output means outputs the length and width dimensions of the joinery calculated by the joinery dimension calculation means to the output monitor, A designated area distinction means outputs to the output monitor the area designated by the aforementioned door and window designation means in a display that is visually distinguishable from the area not designated, A table output means that outputs the areas specified by the aforementioned door / window designation means for each type of door / window, Equipped with, The aforementioned means for distinguishing designated parts involves implementing visually distinguishable markings for each type of joinery. Wall stacking support device.

2. A building cost estimation support device that assists in cost estimation in the design of a building having walls and a roof, The system includes a wall cost estimation support device to assist in the cost estimation of the wall portion of the aforementioned building and a roof cost estimation support device to assist in the cost estimation of the roof portion of the aforementioned building, and integrates the cost estimation results from the wall cost estimation support device and the roof cost estimation support device. The aforementioned wall stacking support device is An output monitor that displays the design drawings of the walls in a building, The output monitor outputs a building design drawing, and the operator uses a means to specify areas including fixtures on the walls of the building through their own operation. With the aforementioned design drawing displayed on the output monitor, a door and window dimension calculation means calculates the vertical and horizontal dimensions of the door and window from the area specified by the door and window specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions. The dimension output means outputs the length and width dimensions of the joinery calculated by the joinery dimension calculation means to the output monitor, Equipped with, The aforementioned roof cost estimation support device is An output monitor that outputs the design drawing of the roof of the aforementioned building, The aforementioned output monitor outputs a building design drawing, and the roof designation means allows the operator to specify the roof of the building through their operation. A span number input means for inputting the number of spans on the roof output to the output monitor, A roof area calculation means calculates the roof area from the area specified by the roof specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions while the aforementioned design drawing is output to the aforementioned output monitor, The roof area calculation means calculates the B-tightness using the roof dimensions used when calculating the roof area and the number of spans entered in the span number input means, A support data output means that outputs the number of B-tights calculated by the B-tight calculation means and the roof area calculated by the roof area calculation means to the output monitor, Equipped with, The aforementioned building cost estimation support device is The wall estimation support device is equipped with an integrated output monitor that outputs the vertical and horizontal dimensions of the joinery calculated by the joinery dimension calculation means, the number of B-tights calculated by the B-tight calculation means in the roof estimation support device, and the roof area calculated by the roof area calculation means. Building cost estimation support device.

3. A building cost estimation support device that assists in cost estimation in the design of a building having walls and a roof, The system includes a wall cost estimation support device to assist in the cost estimation of the wall portion of the aforementioned building and a roof cost estimation support device to assist in the cost estimation of the roof portion of the aforementioned building, and integrates the cost estimation results from the wall cost estimation support device and the roof cost estimation support device. The aforementioned wall stacking support device is An output monitor that displays the design drawings of the walls in a building, The output monitor outputs a building design drawing, and the operator uses a means to specify areas including fixtures on the walls of the building through their own operation. With the aforementioned design drawing displayed on the output monitor, a door and window dimension calculation means calculates the vertical and horizontal dimensions of the door and window from the area specified by the door and window specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions. The dimension output means outputs the length and width dimensions of the joinery calculated by the joinery dimension calculation means to the output monitor, Equipped with, The aforementioned roof cost estimation support device is An output monitor that outputs the design drawing of the roof of the aforementioned building, A beam count input means for inputting the number of support beams on the roof, which is output to the output monitor, A roof area calculation means calculates the roof area from the area specified by the roof specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions while the aforementioned design drawing is output to the aforementioned output monitor, The roof area calculation means calculates the B-tightness using the roof dimensions used when calculating the roof area and the number of support beams entered in the aforementioned support beam number input means, A support data output means that outputs the number of B-tights calculated by the B-tight calculation means and the roof area calculated by the roof area calculation means to the output monitor, Equipped with, The aforementioned building cost estimation support device is The wall estimation support device is equipped with an integrated output monitor that outputs the vertical and horizontal dimensions of the joinery calculated by the joinery dimension calculation means, the number of B-tights calculated by the B-tight calculation means in the roof estimation support device, and the roof area calculated by the roof area calculation means. Building cost estimation support device.

4. The system includes a screen scaling ratio storage means that stores the aforementioned screen scaling ratio in advance. The wall stacking support device according to claim 1.

5. The system includes a scaling ratio calculation means for calculating the aforementioned screen scaling ratio, The scale ratio calculation means includes a reference point specification means for specifying two reference points in the design drawing output by the output monitor, The reference point specification means includes an actual dimension input means for inputting the actual dimensions of the reference line segment specified by that reference point specification means, The system includes a scaling ratio calculation means that calculates the screen scaling ratio using the aforementioned actual dimensions and the output length dimension of the reference line segment output by the aforementioned output monitor. The wall stacking support device according to claim 1.

6. The vertical and horizontal dimensions of the joinery output by the aforementioned dimension output means are output on the same screen as the design drawing area specified by the aforementioned joinery specification means. The wall stacking support device according to claim 1.

7. The system includes a screen scaling ratio storage means that stores the aforementioned screen scaling ratio in advance. A building cost estimation support device according to either claim 2 or claim 3.

8. The system includes a scaling ratio calculation means for calculating the aforementioned screen scaling ratio, The scale ratio calculation means includes a reference point specification means for specifying two reference points in the design drawing output by the output monitor, The reference point specification means includes an actual dimension input means for inputting the actual dimensions of the reference line segment specified by that reference point specification means, The system includes a scaling ratio calculation means that calculates the screen scaling ratio using the aforementioned actual dimensions and the output length dimension of the reference line segment output by the aforementioned output monitor. A building cost estimation support device according to either claim 2 or claim 3.

9. The vertical and horizontal dimensions of the joinery output by the aforementioned dimension output means are output on the same screen as the design drawing area specified by the aforementioned joinery specification means. A building cost estimation support device according to either claim 2 or claim 3.

10. The procedure for outputting building blueprints to an output monitor, A procedure for specifying joinery, in which the operator specifies the area including joinery on the wall of the building, based on the design drawing output to the aforementioned output monitor, A door and window dimension calculation procedure that calculates the vertical and horizontal dimensions of a door and window from the area specified in the door and window specification procedure, using a screen scaling ratio that converts the specified line segments to actual dimensions while the aforementioned design drawing is output to the aforementioned output monitor, The dimension output procedure outputs the length and width dimensions of the joinery calculated using the joinery dimension calculation procedure, A procedure for distinguishing designated areas, which outputs the areas designated in the above-mentioned door and window designation procedure to the output monitor in a way that makes them visually distinguishable from areas that are not designated, The procedure for outputting a table, which outputs the areas specified in the above door / window specification procedure for each type of door / window, The wall stacking support device will perform this task. The aforementioned procedure for distinguishing designated parts involves implementing visually distinguishable markings for each type of joinery. Computer program.

11. The procedure for specifying reference points in the design drawing output by the output monitor, and The procedure for inputting the actual dimensions of the reference line segment specified in the reference point designation procedure, A scaling ratio calculation procedure that calculates the screen scaling ratio using the actual dimensions and the output length dimension of the reference line segment output by the output monitor. This was also decided to be performed by the aforementioned wall stacking support device. The computer program according to claim 10.

12. The vertical and horizontal dimensions of the joinery output using the aforementioned dimension output procedure will be output on the same screen as the design drawing area specified using the aforementioned joinery specification procedure. The computer program according to claim 10.

13. A computer program for controlling a building cost estimation support device that assists in cost estimation in the design of a building with walls and a roof, The aforementioned building cost estimation support device includes a wall cost estimation support device for assisting in the cost estimation of the wall portion of the building and a roof cost estimation support device for assisting in the cost estimation of the roof portion of the building, and integrates the cost estimation results from the wall cost estimation support device and the roof cost estimation support device. The aforementioned wall stacking support device is An output monitor that displays the design drawings of the walls in a building, The output monitor outputs a building design drawing, and the operator uses a means to specify areas including fixtures on the walls of the building through their own operation. With the aforementioned design drawing displayed on the output monitor, a door and window dimension calculation means calculates the vertical and horizontal dimensions of the door and window from the area specified by the door and window specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions. The dimension output means outputs the length and width dimensions of the joinery calculated by the joinery dimension calculation means to the output monitor, Equipped with, The aforementioned roof cost estimation support device is An output monitor that outputs the design drawing of the roof of the aforementioned building, The aforementioned output monitor outputs a building design drawing, and the roof designation means allows the operator to specify the roof of the building through their operation. A span number input means for inputting the number of spans on the roof output to the output monitor, A roof area calculation means calculates the roof area from the area specified by the roof specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions while the aforementioned design drawing is output to the aforementioned output monitor, The roof area calculation means calculates the B-tightness using the roof dimensions used when calculating the roof area and the number of spans entered in the span number input means, A support data output means that outputs the number of B-tights calculated by the B-tight calculation means and the roof area calculated by the roof area calculation means to the output monitor, Equipped with, The aforementioned computer program is With respect to the integrated output monitor provided in the aforementioned building cost estimation support device, A vertical and horizontal dimension output procedure for outputting the vertical and horizontal dimensions of a joinery calculated by the joinery dimension calculation means in the wall quantity calculation support device, A procedure for outputting the number of B-tights calculated by the B-tight calculation means in the roof estimation support device, A roof area output procedure that outputs the roof area calculated by the aforementioned roof area calculation means, A computer program that is to be executed by the aforementioned building cost estimation support device.

14. A computer program for controlling a building cost estimation support device that assists in cost estimation in the design of a building with walls and a roof, The aforementioned building cost estimation support device includes a wall cost estimation support device for assisting in the cost estimation of the wall portion of the building and a roof cost estimation support device for assisting in the cost estimation of the roof portion of the building, and integrates the cost estimation results from the wall cost estimation support device and the roof cost estimation support device. The aforementioned wall stacking support device is An output monitor that displays the design drawings of the walls in a building, The output monitor outputs a building design drawing, and the operator uses a means to specify areas including fixtures on the walls of the building through their own operation. With the aforementioned design drawing displayed on the output monitor, a door and window dimension calculation means calculates the vertical and horizontal dimensions of the door and window from the area specified by the door and window specification means, using a screen scaling ratio that converts the specified line segments to actual dimensions. The dimension output means outputs the length and width dimensions of the joinery calculated by the joinery dimension calculation means to the output monitor, Equipped with, The aforementioned roof cost estimation support device is An output monitor that outputs the design drawing of the roof of the aforementioned building, A beam count input means for inputting the number of support beams on the roof, which is output to the output monitor, A B-tightness calculation means calculates the B-tightness using the roof dimensions used by the aforementioned roof area calculation means when calculating the roof area and the number of support beams input by the aforementioned support beam number input means, A support data output means that outputs the number of B-tights calculated by the B-tight calculation means and the roof area calculated by the roof area calculation means to the output monitor, Equipped with, The aforementioned computer program is With respect to the integrated output monitor provided in the aforementioned building cost estimation support device, A vertical and horizontal dimension output procedure for outputting the vertical and horizontal dimensions of a joinery calculated by the joinery dimension calculation means in the wall quantity calculation support device, A procedure for outputting the number of B-tights calculated by the B-tight calculation means in the roof estimation support device, A roof area output procedure that outputs the roof area calculated by the aforementioned roof area calculation means, A computer program that is to be executed by the aforementioned building cost estimation support device.

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