## 2 CIM and BIM Initiatives

A three-dimensional model is introduced from the planning, research, and design stages of public works and for the construction that follows, a three-dimensional model is linked and developed at each stage such as the subsequent construction, maintenance, and management so that by sharing information between all the stakeholders of the project, the construction productivity system is made more efficient and sophisticated while initiatives to introduce CIM (Construction Information Modeling) for the quality assurance and environmental performance of public works as well as reduce lifecycle costs are carried out. In fiscal 2013, testing was implemented and expanded for the schematic design, preliminary design, and construction stages for an evaluation of CIMs from both a legislative and technical perspective.

Also for government buildings services projects, it is expected that the efficient and effective utilization of BIM (Building Information Modeling) for the lifecycle of government facilities will contribute to ensuring the quality of government facilities, reduction of lifecycle costs regarding the improvement and preservation of facilities, and contribute to customer satisfaction toward government facilities. For this reason, from fiscal year 2010, tests were begun for three directly managed projects as BIM utilization projects and the effects and issues regarding BIM implementation are being evaluated. In addition, “Guidelines for the Creation and Use of BIM models in Government Buildings Projects”, for the basic principles and considerations when using BIMs for government buildings projects, was compiled and published in March 2014.

## Section 4 Technology Development for Construction Machinery and Mechanical Equipment

## (1) Development and Supply of Construction Machinery

In order to carry out appropriate maintenance and management of rivers and roads managed by national government and quickly respond to disaster recovery, efforts are being made to implement machinery for maintenance and management as well as disaster measure machinery across the nation.

Also, in order to improve the efficiency, conservation of labor, and safety of construction associated flood control projects and road development projects, studies and research and development for construction machinery and construction are being undertaken.

## (2) Streamlining and Improving the Reliability of Maintenance and Management of Machinery

For the protection of lives and properties of the citizenry from disasters, the construction of floodgate facilities, storage and drainage pump facilities, and road drainage facilities was furthered starting around late 1965 and many of the facilities are becoming decrepit. For this reason, in addition to preservation to perform overhauls based on the time elapsed from installing the facilities to running time, analysis of vibration values measured during the inspection of facilities and the development of inspection and monitoring technology such as component analysis of lubricating oil are continued to be tested in the field to strive for extending the life of machine equipment and improving reliability.

## (3) Utilizing the Fruits of Construction Technology Development

In order to safely and swiftly carry out restoration work at disaster sites where the danger of secondary disasters such as large-scale floods, sediment-related disasters, and slope collapses, a hydraulic shovel that can be remotely controlled as well as taken apart and airlifted was developed. By FY2013, eleven hydraulic shovels have been deployed.

## (4) Introduction and Development of Robots for Social Infrastructure

For issues faced by Japan such as aging infrastructure, preparedness for disasters such as earthquakes and floods, as well as population decline, low fertility, and aging society, initiatives to improve the effectiveness and efficiency of the maintenance and management of social infrastructure as well as disaster responses through Japan’s strengths in the field of robot technology are underway by striving for development and implementation that is rooted in the field. In fiscal 2013, the “Robot Development and Introduction for Next-Generation Social Infrastructure Study Group” (July 2013) was jointly hosted with the Ministry of Economy, Trade and Industry to create the “Robot Development and Introduction for Next-Generation Social Infrastructure Priority Areas” (December 2013) was formulated. Following this, the newly held five specialized subcommittees (bridge maintenance, tunnel maintenance, underwater maintenance and management,