KR20170142671A - Method of and system for on-line construction management based on cloud - Google Patents

Abstract

The present invention relates to a method and a system for managing an online construction site, which enable workers, managers, enforcers, and supervising agencies to translucently efficiently manage a construction site regardless of time and place by being developed in an online web format based on a cloud from a current system of an offline method and sharing a lot of construction data information varied every moment in accordance with time. The method of the present invention comprises: a step of displaying a screen to enable a client member to select one function among a detail writing function, a detail management function of a construction site, and a cost search function for bidding or contracting of a construction work around the world; a step of enabling a client to select a construction site that the client desires when the client selects the detail management function, and displaying a comprehensive management screen for informing the overall state of a corresponding construction site and selecting management items when the client selects the construction site; a step of allowing a server to display various detail statements of a corresponding construction when the client selects expected establishment details, execution establishment details, ES application details, calculation of an ES index rate, calculation of an ES item rate, and resource management in the comprehensive management screen; a step of allowing the server to display various tabulations of the corresponding construction when the client selects various tabulations in the comprehensive management screen; and a step of allowing the server to display various cost accountings, an item rate, and an index rate of the corresponding construction when the client selects various cost accountings, calculation of the item rate, and calculation of the index rate in the comprehensive management screen.

Description

TECHNICAL FIELD [0001] The present invention relates to a cloud-based online construction site management method and system,

The present invention relates to a construction site management technology, and more particularly, to a construction site management system of a current off-line construction, which is developed based on an on-line web based on a cloud, The present invention relates to a cloud-based on-line construction site management method and system capable of transparently, promptly, and efficiently managing a construction site regardless of a place or time, from a worker to a manager,

Generally, unlike general manufacturing, construction work is complicated and work-oriented production method, and it is a single production type. In other words, the construction has inherent characteristics depending on the requirements of the client, the location of the site and the environment, and it requires a long time in the production process and it is difficult to reproduce it repeatedly. The procedure for carrying out the construction work is divided into the direct construction and the contract work, though it differs according to the nature of the client and the nature of the work. In case of the contract work, it is classified into the competitive bidding contract or the veterinary contract type according to the ordering method.

On the other hand, the general order of the construction work is the ordering stage in which the buyer determines the planned price through design and integration and then announces the tender, and the bidding stage in which the buyer examines the requirements of the client, And a construction step of constructing after completion.

After establishing the construction plan, the client will make the design through on-site inspection, compile to calculate the construction cost (planned price) according to the design, and announce the tender. The buyer understands the site description, the design and the requirements of the client in view of the bidding announcement according to the order plan. In case of the detail bidding, the bid price is calculated by determining the unit price and in the case of the total bidding, the bid amount is determined and bidded . If the bid is won after the bid, a contract is concluded between the client and the buyer. In the case of a detailed bid, the details of the bid submitted at the time of bidding shall be the contract statement, and in the case of total bidding, the statement shall be made in accordance with the total amount at the time of bidding. The order recipient will receive a preliminary amount based on the preliminary statement according to the preliminary rate and change the statement if there is a change in the design of the construction. If there is a change in the producer price index by period or a change in the unit price of the statement item, submit the statement of change of the price inflation system. The contractor manages resources for timely input of resources, and the contractor manages the process. After the completion of the construction, it will deliver the object after various inspections and settle the contract amount.

At the bidding stage, the bidding statement is created by checking the construction unit price and the bidding statement is created by the detailing program. At the contracting stage, the construction schedule, the process control plan and the resource management plan are submitted. Construction management of various construction sites is required to effectively meet quality, safety and cost. In other words, construction work is carried out by inputting technology and funds to laborer as construction subject, material and construction equipment as machinery and equipment, and construction management for quality management, process management, resource management, Design change management, off-the-shelf management, safety management, and environmental management.

However, since the conventional construction site management is mainly managed off-line by management field, site, and business unit, after the construction of the first site is completed, on-line management of construction data There is a problem that the site data is discarded or is not recycled because the system is not formed, and second, there is not developed a program that is automatically linked to the change of the existing quantity of the field report, Third, there are separate programs for each management field, but they are automatically calculated and linked with the fluctuation factors affecting the contract amount such as the construction quantity and exchange rate, the price index, the indirect cost rate of the cost statement, Fourth, there is no integrated management program. Because there is a lack of information on domestic and overseas construction resources, construction bids, and construction methods, there is a lack of transparency on the part of management, supervisors, supervisors, It is difficult to select the products in the construction method or construction history, and 6) It is not possible to manage the resources by the process control. Therefore, it can not be purchased in a short period of time and problems such as over-purchase are caused. . In order to search a huge amount of construction cost that varies according to time and area, a search program with a good search rate and a high search speed is required. However, the unit price data provided at the present time is not only low in quantity but also low in search rate.

KR 10-2011-0049296 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method and system for managing construction site management in a management field, The present invention provides a cloud-based on-line construction site management method and system capable of integrating a plurality of varied construction data information and a search program on-line.

Therefore, according to the present invention, it is possible for an operator to operate a construction site on-line by himself or herself. First, the construction company can share a lot of construction data information and technology, The third manager, supervisor, or enforcer can confirm the management status of the construction site anytime and anywhere with the field ID under his / her management. In the fourth internationalization era, it is possible to acquire the trends and technical information of the quality or price of construction resources in Korea and abroad to improve the quality of construction objects, and as a result, It can increase profitability by reducing construction cost.

In order to achieve the above object, a method of the present invention is a method for constructing a database using construction site data and implementing a server for construction site management, wherein a company member manages his own unit price, The method comprising the steps of: (a) receiving a membership request from a company or a customer and processing the request according to a predetermined procedure; (b) Displaying the screen so that one of the history management function and the unit price search function of the field can be selected; When the customer selects the history management function, the customer is allowed to select a desired construction site, and when the customer selects the construction site, a comprehensive management screen for notifying the entire situation of the construction site and selecting a management item is displayed ; When the customer selects the e-work quantity management on the comprehensive management screen, the server displays a basic screen for selecting the construction type, and when the customer selects an arbitrary construction, Displaying a quantity and a work quantity accumulation; If the customer selects the scheduled / scheduled running history on the comprehensive management screen, the server displays the planned / scheduled running details of the corresponding work; When the customer selects the schedule / execution schedule table on the comprehensive management screen, the server displays a scheduled / execution schedule table of the schedule; And when the customer selects the scheduled / unplanned costing statement on the comprehensive management screen, the server displays the planned / enforced costing statement of the corresponding work.

Further, in the online construction site management method, when a customer selects an inflation-linked adjustment statement in the comprehensive management screen, the server displays an ES adjustment statement of the construction site; When the customer selects an ES adjustment table in the comprehensive management screen, the server displays an ES adjustment table of the construction; And a step of the server displaying an ES adjustment cost statement of the construction when the customer selects the ES adjustment cost statement in the comprehensive management screen.

According to the present invention, it is possible to share the technology or information accumulated by the on-line management program of the construction information (technical data and construction unit price data) of the first site, (3) On-line management of on-line management information can be shared by the manager, the enforcer, or the supervisory supervisory agency with the site ID. Transparency can be improved, and problems on the spot can be quickly identified and coped with.

In addition, according to the present invention, it is possible to know information about cheap and high quality materials or labor force through on-line sharing of construction information of the world, It is possible to save management cost by inputting the bandit's resources and prepare for material and manpower fluctuation. It can easily operate itself on-line by on-line by on-line management program and construction unit price information. This reduces the cost of service and reduces staffing.

According to the present invention, it is possible to prevent capital from being purchased through the receipt of a ready amount at a proper timing, a change in construction design and a change in price change design in a timely manner, and the construction systems of all countries are similar, It is possible to share the construction data (Data)

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing the overall configuration of a cloud-based online construction site management system according to the present invention;
FIG. 2 is a functional block diagram of the application server shown in FIG. 1,
FIG. 3 is an overall flowchart showing an online construction site management procedure according to the present invention;
FIG. 4 is a flowchart of an online bidding /
5 is a flowchart showing an online DB establishment procedure of a construction site according to the present invention.
6 is a flowchart showing an online history management procedure according to the present invention;
FIG. 7 is a flowchart showing a job daily report process according to the present invention;
FIG. 8 is a flowchart illustrating a unit price search procedure according to the present invention.
9 shows an example of a comprehensive management screen of a construction site according to the present invention,
FIG. 10 is an example of a management item selection screen of a construction site according to the present invention,
11 is an example of an e-work daily report screen of a selected construction site according to the present invention,
FIG. 12 shows an example of a ready-made statement screen of a construction site according to the present invention,
FIG. 13 shows an example of a screen of an integrated schedule list of a construction site according to the present invention,
FIG. 14 is a view showing an example of a screen of a construction site preliminary cost statement according to the present invention,
FIG. 15 is a view showing an example of an ES adjustment statement screen of a construction site according to the present invention,
16 is an example of a screen of an ES adjustment table of a construction site according to the present invention,
17 shows an example of a screen for ES adjustment cost calculation at a construction site according to the present invention,
18 to 32 show examples of screens according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

FIG. 1 is a schematic diagram showing an overall configuration of a cloud-based on-line construction site management system according to the present invention, and FIG. 2 is a functional block diagram of the application server shown in FIG.

As shown in FIG. 1, the on-line construction site management system according to the present invention includes various construction-related data such as a construction single unit price such as material cost, labor cost, A construction site management server 10 for providing an on-line construction site management service according to the present invention through the web, and a client for accessing the construction site management server 10 via the Internet 20 to use the service according to the present invention And terminals 40 for providing products or services of terminals 30 and various items necessary for construction work.

1, the construction site management server 10 includes a data server 11 for recording and managing construction data such as material costs and labor costs on a global scale, and a data server 11 for executing various procedures for construction management according to the present invention An application server 12, a web server 13, a manager terminal 14, a data input terminal 15, an operation terminal 16, And the operator can operate the terminal through the operation terminal 16 and manage the terminal through the management terminal 14.

As shown in FIG. 2, the application server 12 according to the present invention includes a file conversion unit 121 for converting a contract description of construction work made up of an Excel file and a statement on a database according to the present invention, A scheduled process management unit 122 for calculating the cumulative quantity of scheduled work for each item and date of the statement by inputting the scheduled work period for each sub-item in the sub-contract, ), An execution process management unit 123 for calculating the execution amount process rate by inputting the number of work items per item by the e-work daily report on the monthly construction data, a monthly construction data (about 1.01 million units including single unit price, A data input unit 124 for inputting data (exponential rate, exchange rate, etc.) necessary for the calculation of the data and the assignment of a resource code to the data, and an exponent adjustment rate or item adjustment A unit price search unit 126 for enabling construction data to be searched on-line, an operation and management unit (for increasing on-line calculation and search speed) A data and annotator output unit 128 for processing the data and annotation output, a bid history creation unit 129 for creating a bid schedule, a subcontracting detail creating unit 130 for creating a subcontracting statement, A cost calculator 131 for automatically calculating the cost using the item and unit price search, and a statistical processor 132 for processing various statistics.

FIG. 3 is a flowchart showing an online construction site management procedure according to the present invention. FIG. 4 is a flowchart of an online bidding / contracting statement creation procedure according to the present invention, FIG. 5 is an online DB construction procedure 6 is a flowchart illustrating an online history management procedure according to the present invention, FIG. 7 is a flowchart illustrating a job daily report processing procedure according to the present invention, and FIG. 8 is a flowchart illustrating a unit price search procedure according to the present invention It is a flowchart.

First, the construction site management program according to the present invention changes the construction quantity according to the progress of the construction, and the unit price (price) of the resources, the various calculation rates, the price index rate, , The calculation results of the process management, the construction management, the resource management, the construction design change management, the price change design change management program, etc. are changed. These site management programs should be integrated and managed organically in accordance with the two factors of change in date and construction quantity, basic budgeting and execution of construction works, calculation of profit and cost, The price information of construction data (Data) that varies according to time and area should be constructed and easily searchable. To this end, the on-line construction site management system of the present invention manages the management program and the management unit cost of the construction program on an on-line basis rather than being separately operated for off-line management fields It is developed to be able to operate by the field manager himself. It is designed to manage construction data (data) input, outsourcer management, service worker management, sales management, sales manager management, construction company management, bid notification management, membership management, It is possible to manage. In addition, the construction site management system of the present invention has an input system (system) for international construction cost and overseas construction cost (including one unit price) for the search, processes the translation of the construction term, And an output program for outputting a statement, and is implemented as a web server so that the construction site management system according to the present invention can be operated and utilized both at home and abroad.

The construction site management system of the present invention can be managed and operated by the organic cooperation of the web operation team, the service team, the data input team, the sales team, and the user members. - It is responsible for job daily report, design change management program, index adjustment rate calculation program, item adjustment rate calculation program, construction data, manager program (sales, service, input, management, accounting) (Contract date, design change date), making a statement (entering unit price code for each item, inputting a unit price code for each item, The data input team is responsible for the construction unit price, construction company, bid construction information, construction site information, construction law technical data, e-job daily report (for F member input) and so on. In addition, the sales team is responsible for the consultation, the contract, the sales activity, and the input of local information. The user (member) is responsible for F member (construction site management), B member The manager is divided into a service team, a data input team, a sales team, and a manager. The manager is a manager, and the manager is a manager.

Referring to FIG. 3, a database is constructed using basic construction data to implement a server for construction management (S301). After the server is constructed, if a construction site management service is provided through the web, a company that sells construction related products or services is required to subscribe as a business member through a company terminal 40 and to submit bids / contracts / The construction company joining the customer terminal 30 through the customer terminal 30 (S302). At this time, members can subscribe to F members who can use the construction site management, B members who can use bidding related services, and P members who can use the unit price search service according to the concrete service contents that can be used.

When a member logs in, the server provides a screen dedicated to the members of the company, and the company registers and corrects the unit price of the related item. Accordingly, the unit price can be updated in real time on a global scale (S303 to S305). When the customer member logs in, the server provides a customer member exclusive screen to select a desired function (S306 to S308). According to the present invention, it is possible to provide a service such as a statement making, a field history management, and a unit price search to a customer member.

If the customer member selects to create the details, the bidding statement or the contract statement can be created as shown in FIG. Referring to FIG. 4, when a customer who is a customer member uploads a basic statement as an excel file, the system converts the file into a file format suitable for the database and generates an aggregate table (S401, S402). Subsequently, the system automatically performs cost calculation through an aggregate table and a unit price search, and outputs a bid / subliminal statement. If a correction rate is input as the case may be, the bid / sublimation statement is output after the recalculation is performed according to the adjustment rate (S403 to S408).

When the customer selects the history management for the first time, it enables to prepare a scheduled process statement for the construction site as shown in FIG. Referring to FIG. 5, when a customer who is a customer member uploads a basic statement as an excel file, the system converts the file into a file format suitable for the database and generates an aggregate table (S501 to S503). When the reference date is inputted, the cost calculation is performed according to the reference date. If the construction period is set, the predetermined process statement is generated for each construction period and stored in the database (S504 to S507). As a result, construction site managers and contractors can manage construction sites through the web.

When the customer selects the history management after the construction site is established, the customer can manage the details of the construction site desired by the customer as shown in FIG. 6. When the customer selects the unit price search, This allows you to search for the unit price of the desired item. Referring to FIG. 8, if the customer clicks the search after inputting the item, the unit price of the item is retrieved from the construction database already input, and the price for each region and company is displayed (S801 to S804). When a specific company is selected from the unit price list, the electronic commerce site is moved to the e-commerce site of the company so that electronic commerce can be performed with the company (S805, S80). In this case, the exposure rank (grade) of the company can be differentiated according to the rating of the company member.

Referring back to FIG. 6, first, a construction site is selected. Since a construction site may be located in various places, a construction site to be managed is selected (S601). When a construction site is selected, a comprehensive management screen for notifying the entire construction site is displayed as shown in FIG. 9 (S902).

9, the comprehensive management screen displays the standard date, the name of the construction site, the planned construction rate up to the reference date, the execution rate, the difference, and the index adjustment ratio, and displays the e-operation daily report, the established report, the tally sheet, the cost statement, , An adjusted cost statement, an exponential rate chart, and the like. Accordingly, the customer can select a desired management item in the comprehensive management screen (S603).

When the customer selects the e-work daily report, a construction site management item selection screen for selecting the construction type as shown in Fig. 10 is displayed (S604, S605). On the construction site management item selection screen, a specific construction name of each construction classified into construction work, civil works, and facility construction is displayed on the left side. If a construction is selected according to the procedure of FIG. 8, The e-work daily report on the selection date of the construction is displayed on the screen (S501, S502). 11, specific details of items such as a name, a specification, a unit, a quantity, a scheduled day number, a scheduled total, a run day number, an execution total, and the like are displayed.

On the other hand, if the customer selects the default history in the comprehensive management screen, the name, standard, unit, unit price, design history, ready history, and default rate are displayed for the selection date as shown in FIG. 12, , The name, standard, unit, design, ready-made, and goodness of the selection date are displayed as shown in FIG. 13 (S606 to S609). When the customer selects the preliminary cost statement on the comprehensive management screen, the preliminary cost statement such as the designation amount, the ready amount, and the unspent amount is displayed for the selected date as shown in FIG. The display format or structure of such a ready-made report, the ready-made chart, and the ready-made cost statement is just an example and can be expressed in various ways.

On the other hand, the details such as the details, the spreadsheet, and the cost statement can be adjusted according to the contracts at the time of ordering, according to the inflation-linked system or the item adjustment system. Examples of the adjusted statement, the spreadsheet and the cost statement screen are shown in FIGS. 15 to 17 For example, an example of a specific screen may vary depending on the adopted method, that is, the price leveling system or the item adjustment system. For the application, an index classification statement, a price index adjustment rate chart, and an item adjustment cost calculation sheet are required.

In order to facilitate the management of the construction site, it is possible to display the input quantity calculation by the resource / period of the construction work of the construction site. In order to facilitate the management of the construction site, the schedule / Graphs of various statuses or fluctuations can be displayed using graphs of input by resource / period and graphs of fluctuation of resources / period by period of construction unit price.

As described above, according to the present invention, various statements of a construction site desired by a customer can be managed on the web in real time.

On the other hand, the web sites to which the on-line construction site management method according to the present invention is applied may be provided in different order of the screens as shown in Table 1 below.

      division    The details          Remarks
Business management
  Comprehensive analysis management   18   Work Quantity Management   19   Disclosure Information Management   20
Planned Readiness Management
  Upcoming release   21   Planned Readings   22   Upcoming Costing Statement   23
Launch management
  Launch Statement   24   A run-time table   25   Running cost sheet   26
ES application management
  ES application statement   27   ES Application Details Sheet   28   ES applied cost statement   29
Index ES Management
  Index classification statement   30   Index classification table   31   Exponential rate table   32

Referring to Table 1, the main management items are classified into task management, scheduled maintenance, execution management, ES application management, index ES management, item ES management, and construction resource management. Cost accounts, and so on. These management items are the same as the above-described embodiments, but only the screen configuration provided according to the necessity is different, and the further description will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: Cloud-based online construction site management system 11: DB server
12: Application server 13: Web server
14: Manager terminal 15: Data input terminal
16: Operational terminal 20: Internet
30: customer terminal 40: company terminal

Claims (7)

We construct a database using construction site data and build a server for construction site management to manage the unit price of the company member and manage the construction site through the web to customer members. As a result,
When the server receives a request for member registration from a company or a customer, the server processes the request according to a predetermined procedure, and then displays a screen for selecting a function for creating a bidding or contract for the customer member, a history management function of the construction site, ;
When the customer selects the history management function, the customer is allowed to select a desired construction site, and when the customer selects the construction site, a comprehensive management screen for notifying the entire situation of the construction site and selecting a management item is displayed ;
When the customer selects the e-work quantity management on the comprehensive management screen, the server displays a basic screen for selecting the construction type, and when the customer selects an arbitrary construction, Displaying a quantity and a work quantity accumulation;
If the customer selects the scheduled / scheduled running history on the comprehensive management screen, the server displays the planned / scheduled running details of the corresponding work;
When the customer selects the schedule / execution schedule table on the comprehensive management screen, the server displays a scheduled / execution schedule table of the schedule; And
Wherein the server comprises a step of displaying a schedule / execution initial cost statement of the construction when the customer selects the schedule / execution initial cost statement on the comprehensive management screen. The on-line construction site management method according to claim 1,
When the customer selects an inflation-linked adjustment statement in the comprehensive management screen, the server displays an ES adjustment statement of the corresponding construction;
When the customer selects an ES adjustment table in the comprehensive management screen, the server displays an ES adjustment table of the construction; And
The method according to claim 1, further comprising the step of: when the customer selects an ES adjustment costing statement on the comprehensive management screen, the server displays an ES adjustment cost statement of the construction company How to manage. 3. The method according to claim 2, wherein if the adjustment is an adjustment of an inflation rate (ES)
If the customer selects an inflation linked adjustment statement on the comprehensive management screen, the server displays an adjusted inflation adjustment statement of the corresponding construction; If the customer selects an inflation-linked adjustment sheet in the comprehensive management screen, the server displays an adjusted inflation-adjustment sheet of the construction; When the customer selects an inflation-linked adjustment costing statement on the comprehensive management screen, the server displays the adjusted costing statement linked to the price of the construction concerned; When the customer selects an exponent classification statement on the comprehensive management screen, the server displays an exponential classification statement of the construction; When the customer selects an index classification table in the comprehensive management screen, the server displays an adjusted index classification table of the construction; Wherein the server displays an adjusted price index adjustment rate table of the construction when the customer selects the price index adjustment rate table on the comprehensive management screen. 3. The method according to claim 2,
When the customer selects the item adjustment application statement on the comprehensive management screen, the server displays the item adjustment statement of the corresponding construction; When the customer selects an item adjustment table on the comprehensive management screen, the server displays an item adjustment table of the corresponding construction; When the customer selects the item adjustment cost statement on the comprehensive management screen, the server displays the adjusted item adjustment cost statement of the corresponding construction; When the customer selects the item adjustment unit price calculation sheet on the comprehensive management screen, the server displays the item adjustment unit price calculation sheet of the corresponding construction; When the customer selects the item adjustment calculation statement on the comprehensive management screen, the server displays the item adjustment calculation statement of the corresponding construction; When the customer selects the item adjustment adjustment calculation list sheet on the comprehensive management screen, the server displays the item adjustment adjustment calculation table of the corresponding construction; Wherein the server displays an item adjustment calculation cost statement of the construction when the customer selects the item adjustment calculation cost statement on the comprehensive management screen. The on-line construction site management method according to claim 1,
Displaying a total resource calculation sheet of the construction by the server when the customer selects the total resource calculation sheet from the comprehensive management screen; and if the customer selects the input quantity calculation by resource / period from the comprehensive management screen, Wherein the server further comprises the step of displaying the input quantity calculation for each resource / period of the construction work. The on-line construction site management method according to claim 1,
The method according to any one of claims 1 to 3, further comprising the step of displaying a graph of a planned / executive rate graph of a construction site, an index adjustment rate fluctuation graph, an item adjustment rate fluctuation graph, an input graph by resource / How to manage an online construction site. On-line construction site management system is constructed on the basis of a database of various construction related data such as construction cost, construction cost, construction cost, etc. such as material cost and labor cost, and provides on-line construction site management service through the Internet through the Internet (20) A construction site management server 10 and a customer terminal 30 connected to the construction site management server 10 via the Internet 20 for using the service and products and services of various items required for construction (40), the system comprising:
The construction site management server 10 includes a data server 11 for recording and managing construction data such as material costs and labor costs on a global scale, an application server 12 for performing various procedures for construction management according to the present invention, And a web server 13 that manages members and takes charge of a web interface with a customer,
The application server 12 includes a file conversion unit 121 for converting contracts of a construction work made up of an Excel file to a statement on a database according to the present invention, A scheduled process management unit 122 for calculating the cumulative quantity of the scheduled work for each item and date of the statement by input and calculating the planned amount of process rate by the calculation, (The number of units such as the unit price, the unit price, etc.) and the data necessary for the calculation of the statement (exponential rate, exchange rate, etc.) A data input unit 124 for inputting an input source code and a resource code and a price change design changing unit 12 for calculating an index adjustment rate or an item adjustment rate on a date- 5), a unit price search unit 126 for enabling construction data to be searched on-line, an operation and management unit 127 for increasing a calculation and a search speed on-line, A bid detail creating unit 129 for creating bid details, a contract detail creating unit 130 for creating a contract detail statement, A cost calculator 131 for automatically calculating a cost, and a statistical processor 132 for processing various statistics.

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