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You can install scaffolding on the float! Enjoy the water space freely! Information on floating dock rentals.

  • Bridge Materials

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Just by "applying" it to metals, glass, concrete, etc., you can achieve high durability waterproofing and repairs! It can be painted over.

  • Waterproof tape, adhesive, drain, protective panel

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Industry first! BIM-compatible architectural estimation system "NCS/HEAIOΣ"

  • addition
  • Cost management and cost estimation software

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Upload design drawings/specification information/unit price list, and automatically execute quantity takeoff and estimate calculations!

  • addition

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<Monthly fee of ¥3,800 (tax included)!> Just click to trace the drawings! 50% reduction in labor hours from manual work *According to our research.

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  • Cost management and cost estimation software
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Announcement of the complete renewal of the product site for the estimation software "Rakuou".

Thank you for your continued support. This is a notice from Arc System. Following the renewal of our homepage at the end of last year, we have completely revamped the product site for our construction estimation software "Rakuou." With this renewal, it has become easier to compare the features and functions of each product model in the Rakuou series. This makes it easier for customers to choose the product that best meets their needs. We have also published case studies from companies involved in electrical and mechanical equipment construction. If you are considering the introduction of estimation software, please take a look at the related links at the bottom of the page. Our highly praised "Seki-san's Helpful Blog" has also been redesigned for easier access. We share knowledge useful for estimation work in construction, electrical, and equipment fields, so we hope you will take a moment to read it. We will continue to enhance our product introductions and case studies, so we appreciate your continued support!

The appeal lies in the flexibility to customize according to business needs. We will listen to your challenges, summarize them, and provide solutions!

  • 楽王3サブ2025.png
  • ?楽王65%の工数削減.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ?積算精度アップ.png
  • ?全日材料マスタ.png
  • ?ファイル一元管理.png
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Sekki-san's Helpful Blog: What is Estimation? We provide basic knowledge and tips on estimation work!

Thank you for your continued support. This is a notice from Arc System. We have updated "Mr. Seki's Helpful Blog." This time, the theme is "Estimation." Estimation is one of the unique jobs in the construction industry. It involves interpreting design documents such as blueprints and specifications to calculate the costs necessary for construction and create cost estimates. Some of you may be hearing about the job of "estimation" for the first time. In this column, we will explain the job of "estimation" once again. We will introduce specific content, the types of people suited for this job, the rewards, and the challenging aspects! <Content of the post> ■ What is estimation? An introduction to the job description, suitable types, and how to find work - What is estimation? An introduction to the job description - What are the rewards of estimation? Check the types suited for the job - How should one search for estimation jobs? - [Summary] Estimation is a job where you can utilize your expertise in the construction industry and work for a long time. In addition to the article posted this time, we have published articles on various themes. Please take a moment to read them from the related links at the bottom of the page!

Start from 3,800 yen per month! Simplify complex and time-consuming estimation and quoting tasks. Reduce labor by about 65% from spreadsheet software!

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  • Cost management and cost estimation software
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With a track record of introducing the series to 2,100 companies, our intuitive picking software that only requires a click, combined with a customizable estimation software, will enhance your company...

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  • 楽王3TOP2025.png
  • 楽王3サブ2025.png
  • 楽王Link2.png
  • 楽王Linkサブ?.png
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  • Cost management and cost estimation software
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Support for construction, electrical, and equipment work. Further efficiency with dedicated software while maintaining the familiar operation of your usual spreadsheet software! Reducing labor by abou...

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  • ?業務標準化.png
  • ?積算精度アップ.png
  • ?ファイル一元管理.png
  • ?元請け業務の効率化.png
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  • Cost management and cost estimation software
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Unit price data from Zennihon Publishing is available! Standardization of operations, reduction of man-hours, file management, and solving all issues related to estimation work!

  • ヒロイTOP価格強調.png
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With the drawing extraction software "Hiroi-kun III," it's easy to get started with a monthly subscription! Streamline your operations with simple click-only controls.

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Architecture, electrical, equipment, building management... Responding to various industries in the construction sector. Easy operation also contributes to standardization of business!

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  • 楽王Linkサブ?.png
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We are releasing testimonials from companies that have solved various business challenges through the introduction of "Hiroi-kun III"!

  • ヒロイTOP価格強調.png
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  • 画像1.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
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  • ヒロイ組織共有?png.png
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Announcement of the complete renewal of the product site for the estimation software "Rakuou".

Thank you for your continued support. This is a notice from Arc System. Following the renewal of our homepage at the end of last year, we have completely revamped the product site for our construction estimation software "Rakuou." With this renewal, it has become easier to compare the features and functions of each product model in the Rakuou series. This makes it easier for customers to choose the product that best meets their needs. We have also published case studies from companies involved in electrical and mechanical equipment construction. If you are considering the introduction of estimation software, please take a look at the related links at the bottom of the page. Our highly praised "Seki-san's Helpful Blog" has also been redesigned for easier access. We share knowledge useful for estimation work in construction, electrical, and equipment fields, so we hope you will take a moment to read it. We will continue to enhance our product introductions and case studies, so we appreciate your continued support!

With the "Hiroi-kun III" from the Rakuou series, you can easily import PDF and CAD drawings and just click on the drawings for simple operation!

  • ヒロイサブ1.png
  • ヒロイ効果.png
  • ?ヒロイフロー.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイExcel出力1.png
  • ヒロイ楽王連携1 .png
  • 楽王3IT導入補助金.png
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  • Cost management and cost estimation software
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With the drawing extraction software "Hiroi-kun III," you can reduce about 50% of the work hours from manual labor!

  • ヒロイサブ1.png
  • ヒロイ効果.png
  • 画像1.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイExcel出力1.png
  • ヒロイ組織共有?png.png
  • ヒロイ楽王連携1 .png
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  • Cost management and cost estimation software
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A subscription version is now available for ¥3,800 per month! It supports a wide range of takeoff tasks such as architecture, electrical, and equipment construction, achieving a 50% reduction in man-h...

  • ヒロイ効果.png
  • 拾い出しフロー.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイExcel出力1.png
  • ヒロイ組織共有?png.png
  • ヒロイ楽王連携1 .png
  • 楽王シリーズTOP3.png
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  • Other Software
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Start easily for just ¥3,800 per month (tax included)! Just click to extract length, area, quantity, and more.

  • ヒロイ効果.png
  • 画像1.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイExcel出力1.png
  • ヒロイ組織共有?png.png
  • ヒロイ楽王連携1 .png
  • 楽王シリーズTOP3.png
  • 0.5楽王65%の工数削減.png
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A subscription version of the drawing extraction software "Hiroi-kun," which anyone can master with simple mouse clicks, is now available!

  • ヒロイサブ1.png
  • ヒロイ効果.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイExcel出力.png
  • ヒロイExcel出力1.png
  • 拾い出しフロー.png
  • 楽王シリーズTOP3.png
  • 0.5楽王65%の工数削減.png
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Sekki-san's Helpful Blog: What is Estimation? We provide basic knowledge and tips on estimation work!

Thank you for your continued support. This is a notice from Arc System. We have updated "Mr. Seki's Helpful Blog." This time, the theme is "Estimation." Estimation is one of the unique jobs in the construction industry. It involves interpreting design documents such as blueprints and specifications to calculate the costs necessary for construction and create cost estimates. Some of you may be hearing about the job of "estimation" for the first time. In this column, we will explain the job of "estimation" once again. We will introduce specific content, the types of people suited for this job, the rewards, and the challenging aspects! <Content of the post> ■ What is estimation? An introduction to the job description, suitable types, and how to find work - What is estimation? An introduction to the job description - What are the rewards of estimation? Check the types suited for the job - How should one search for estimation jobs? - [Summary] Estimation is a job where you can utilize your expertise in the construction industry and work for a long time. In addition to the article posted this time, we have published articles on various themes. Please take a moment to read them from the related links at the bottom of the page!

With Zen Nippon Publishing's individual/combined unit price data available! Achieve about a 65% reduction in labor hours from spreadsheet software calculations. Easily solve business challenges!

  • 楽王シリーズTOP3.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ?積算精度アップ.png
  • ?全日材料マスタ.png
  • ?ファイル一元管理.png
  • ?元請け業務の効率化.png
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<Total of 2,100 companies introduced> Widely supports estimating and quotation in the construction industry. A cost estimation software that can be customized to meet your company's requirements and e...

  • 楽王65%の工数削減.png
  • 楽王3サブ2025.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ?積算精度アップ.png
  • ?ファイル一元管理.png
  • ?元請け業務の効率化.png
  • ?履歴管理機能.png
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  • Cost management and cost estimation software
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Announcement of the complete renewal of the product site for the estimation software "Rakuou".

Thank you for your continued support. This is a notice from Arc System. Following the renewal of our homepage at the end of last year, we have completely revamped the product site for our construction estimation software "Rakuou." With this renewal, it has become easier to compare the features and functions of each product model in the Rakuou series. This makes it easier for customers to choose the product that best meets their needs. We have also published case studies from companies involved in electrical and mechanical equipment construction. If you are considering the introduction of estimation software, please take a look at the related links at the bottom of the page. Our highly praised "Seki-san's Helpful Blog" has also been redesigned for easier access. We share knowledge useful for estimation work in construction, electrical, and equipment fields, so we hope you will take a moment to read it. We will continue to enhance our product introductions and case studies, so we appreciate your continued support!

Available from ¥3,800 per month! Simplify and streamline complex estimation tasks! Reduce labor by about 65% compared to spreadsheet software.

  • ?楽王65%の工数削減.png
  • 楽王Crewサブ?.png
  • 楽王Linkサブ?.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ヒロイサブ1.png
  • ヒロイシンプル操作?.png
  • ヒロイExcel出力1.png
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  • Cost management and cost estimation software
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Available from ¥3,800 per month! Simplify and streamline complex estimation tasks! Reduce labor by about 65% compared to spreadsheet software.

  • ?楽王65%の工数削減.png
  • 楽王Crewサブ?.png
  • 楽王Linkサブ?.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ヒロイサブ1.png
  • ヒロイシンプル操作?.png
  • ヒロイExcel出力1.png
  • ヒロイ楽王連携1 .png
  • Cost management and cost estimation software
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Available from ¥3,800 per month! Simplify and streamline complex estimation tasks! Reduce labor by about 65% compared to spreadsheet software.

  • ?楽王65%の工数削減.png
  • 楽王Crewサブ?.png
  • 楽王Linkサブ?.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ヒロイサブ1.png
  • ヒロイシンプル操作?.png
  • ヒロイ自動計算?.png
  • ヒロイ楽王連携1 .png
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The estimation software seems difficult and I'm worried about being able to use it... "Rakuou" allows you to utilize specialized functions of estimation software while maintaining the feel of spreadsh...

  • 楽王3サブ?.png
  • 楽王Crewサブ?.png
  • 楽王Linkサブ?.png
  • 楽王65%の工数削減.png
  • ?表計算ソフトライク.png
  • ?積算精度アップ.png
  • ?ファイル一元管理.png
  • ?元請け業務の効率化.png
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Sekki-san's Helpful Blog: What is Estimation? We provide basic knowledge and tips on estimation work!

Thank you for your continued support. This is a notice from Arc System. We have updated "Mr. Seki's Helpful Blog." This time, the theme is "Estimation." Estimation is one of the unique jobs in the construction industry. It involves interpreting design documents such as blueprints and specifications to calculate the costs necessary for construction and create cost estimates. Some of you may be hearing about the job of "estimation" for the first time. In this column, we will explain the job of "estimation" once again. We will introduce specific content, the types of people suited for this job, the rewards, and the challenging aspects! <Content of the post> ■ What is estimation? An introduction to the job description, suitable types, and how to find work - What is estimation? An introduction to the job description - What are the rewards of estimation? Check the types suited for the job - How should one search for estimation jobs? - [Summary] Estimation is a job where you can utilize your expertise in the construction industry and work for a long time. In addition to the article posted this time, we have published articles on various themes. Please take a moment to read them from the related links at the bottom of the page!

By entrusting us with the cumbersome estimation tasks, we will reduce the burden of your daily operations!

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Due to being cloud-based, it is possible to create and submit timely estimates even from remote locations.

  • Landscaping
  • Drawing, tracing, CAD
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Limited-time offer! Lease rate campaign now underway!

Thank you for your continued support. This is Oseven Corporation. We are currently holding a "Limited Time Offer! Lease Rate Campaign!" [About the Campaign] - This is a campaign where you can lease at a lower rate than usual. - Introduce a new or updated 07CAD through leasing. <Subject to approval> - Complete the lease contract processing by the end of March 2022. <5-year lease> [Benefits of Leasing!] 1) You can introduce it with a minimal monthly lease fee! 2) The monthly amount is fixed, making cost management easy! [Introduction to 07CAD] - "Easy, Fast, Beautiful" - Simple operation that even beginners can handle! - Comfortable drafting without location restrictions even during the COVID-19 pandemic! Telework and remote work are also OK! - Not just beautiful! Diverse expressions such as night views and hand-drawn styles are possible. - Standard equipped with a cloud server that allows viewing and saving on the go. - Night view expressions and hand-drawn styles are also OK. You can accurately express your image. You can introduce [07CAD] at a better rate than usual! Please consider it! Feel free to consult us through the URL below!

I want to unify the organization's estimation rules... For such concerns, leave it to Rakuou Link, where you can share unit price data, templates, and past estimates!

  • 楽王Linkサブ?.png
  • 楽王65%の工数削減.png
  • ?表計算ソフトライク.png
  • ?業務標準化.png
  • ?積算精度アップ.png
  • ?ファイル一元管理.png
  • ?元請け業務の効率化.png
  • ?履歴管理機能.png
  • Cost management and cost estimation software
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Reduce the time spent on quantity takeoff and estimate preparation in the construction industry. Achieve a 65% reduction in work hours with the Easy Estimation series that anyone can use!

  • 楽王3サブ?.png
  • 楽王Crewサブ?.png
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  • 楽王65%の工数削減.png
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Simplifying the complex extraction and estimation of construction work. We spoke with a company that has achieved significant operational efficiency!

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Rakuou + "Hiroi-kun III" achieves over a day's worth of labor hour reduction! With the time created, we have another case! We are currently publishing examples of successful implementation that realiz...

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Announcement of the complete renewal of the product site for the estimation software "Rakuou".

Thank you for your continued support. This is a notice from Arc System. Following the renewal of our homepage at the end of last year, we have completely revamped the product site for our construction estimation software "Rakuou." With this renewal, it has become easier to compare the features and functions of each product model in the Rakuou series. This makes it easier for customers to choose the product that best meets their needs. We have also published case studies from companies involved in electrical and mechanical equipment construction. If you are considering the introduction of estimation software, please take a look at the related links at the bottom of the page. Our highly praised "Seki-san's Helpful Blog" has also been redesigned for easier access. We share knowledge useful for estimation work in construction, electrical, and equipment fields, so we hope you will take a moment to read it. We will continue to enhance our product introductions and case studies, so we appreciate your continued support!

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From the home to the main pipe, we support both private and government projects! A cost estimation and management system for water and electrical construction businesses with over 700 implementation c...

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No. 1 in introducing regional general contractors with sales of 500 million to 10 billion yen! The Advant finishing estimation and structural estimation system can perform estimations with more than f...

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Experience significant labor savings with the aggregation feature! Case study on the introduction of electrical equipment construction services now available!

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Announcement of the complete renewal of the product site for the estimation software "Rakuou".

Thank you for your continued support. This is a notice from Arc System. Following the renewal of our homepage at the end of last year, we have completely revamped the product site for our construction estimation software "Rakuou." With this renewal, it has become easier to compare the features and functions of each product model in the Rakuou series. This makes it easier for customers to choose the product that best meets their needs. We have also published case studies from companies involved in electrical and mechanical equipment construction. If you are considering the introduction of estimation software, please take a look at the related links at the bottom of the page. Our highly praised "Seki-san's Helpful Blog" has also been redesigned for easier access. We share knowledge useful for estimation work in construction, electrical, and equipment fields, so we hope you will take a moment to read it. We will continue to enhance our product introductions and case studies, so we appreciate your continued support!

Is the layout of the insulation material taking too much time?

  • Drawing, tracing, CAD
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From creating estimates to cost management and post-construction management, everything is easy, smooth, and accurate! Creating construction ledgers, project history documents, invoices, and more is a...

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The elimination of unnecessary effort has a significant effect! The convenient features also contribute to efficiency and help prevent mistakes.

  • Cost management and cost estimation software
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The workload of the person in charge can be reduced, and the speed of unit price updates and annual revisions is fast! Introduction of a civil engineering estimation system case study.

  • Cost management and cost estimation software
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Since the introduction of the civil engineering estimation system, I believe the time spent on estimation tasks has been reduced by about 70%.

  • Cost management and cost estimation software
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A proven track record of trust, an affordable price for the 'public sector' estimation system!

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We are holding a cost estimation seminar! We are also working to support the development of personnel with cost estimation skills!

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