How should i-Construction 2.0 be used in public works? Six practical points

What really matters in public works is how to translate this large policy into your own operations. For directly managed civil engineering work and construction, BIM/CIM became the default in fiscal 2023 except for small-scale cases, and in fiscal 2024 trials began for 3D design, quantity estimation using attribute information, and supervision/inspection using digital data. Therefore, in future public works it is indispensable to adopt the mindset of linking the entire flow of measuring, designing, constructing, verifying, and handing over with data from the start.

Table of contents

• What will i-Construction 2.0 change in public works?

• Key point 1: Establish a "3D-first" assumption at the procurement stage

• Key point 2: Decide data handover rules in contracts and orders in advance

• Key point 3: Expand application by work type rather than full automation of construction

• Key point 4: Shift supervision and inspection from document-centered to data-centered

• Key point 5: Advance remote operations together with safety assurance, not only labor reduction

• Key point 6: Produce deliverables that remain usable after completion and link to maintenance

• How to make i-Construction 2.0 function in public works practice

What will i-Construction 2.0 change in public works?

When considering i-Construction 2.0 in public works, the first thing to grasp is that this is not merely a slight advancement of conventional ICT construction. To date, i-Construction has spread mainly as a trend to improve efficiency by using digital technologies in areas such as surveying, design, construction, and as-built management. By contrast, i-Construction 2.0 aims to operate the entire construction site with fewer people, more safely, and more comfortably, and seeks to redesign not only automation of construction itself but also the methods of data handover and construction management. In other words, the major difference is that it targets not only improvements during construction but also the procurement conditions, inspections, and even data organization with an eye to post-handover use.

Key point 1: Establish a "3D-first" assumption at the procurement stage

If you want i-Construction 2.0 to function in public works, the first step is not to proceed while retaining a 2D drawing–centric mindset at the procurement stage. For directly managed civil engineering, the general application of BIM/CIM is progressing, and in fiscal 2024 trials began for 3D design that reconciles 2D drawings with 3D models and for supervision/inspection using digital data. This indicates a shift toward treating 3D models not as “useful reference materials” but as practical data that feed into construction, quantity estimation, and inspection. What is important for public works practitioners is to avoid leaving ambiguous, at the procurement stage, the scope of 3D coverage, required attribute information, handover format, and responsibility for updates. If these are unclear, data that could be used in design may not be usable in construction, and data that can be produced during construction may not be passed on to inspection, causing fragmentation.

Practically speaking, it is not necessary to aim for advanced 3D utilization in every project right away. However, at minimum you should organize before procurement “which scope will be managed in 3D,” “to what extent it will be used for as-built verification and quantity calculation,” and “what will be delivered as final outputs upon completion.” In public works, if sites change methods independently because they find them convenient, those methods will not be sustained unless they align with the contract documents and inspection methods. Projects that succeed with i-Construction 2.0 anticipate site operations from the procurement stage and set conditions so that design-stage data become the starting point for construction and inspection. Projects with weak preparation at procurement tend to revert to traditional paper and photos, limiting the benefits of 3D.

Key point 2: Decide data handover rules in contracts and orders in advance

In public works practice, this way of thinking must be translated down to the level of contracts and negotiations. For example, it is important to align early—before work begins—on the handling of coordinate systems and reference elevations, definitions of attribute items, timing of model updates, rules for storing site measurement data, and authoritative management of data used during inspections. If these matters are postponed, contractors may have data that the client cannot read, submissions may be rejected for not matching the client’s required format, or the maintenance department may be unable to use the data after completion, causing rework. The national government is also promoting technical support for local governments to introduce ICT-based construction, and there is a movement to expand data linkage across public works in stages. In local projects, it is more important to decide on the minimum rules to be followed in contracts and orders and establish operations, rather than aiming for perfection from the start.

Key point 3: Expand application by work type rather than full automation of construction

Also, as of March 2025, the procedures for as-built management and supervision/inspection have been developed and revised across many work types, including earthworks, paving, pavement milling, river dredging, slope works, foundation works, retaining walls, piers, and abutments. This shows that usable targets in practice are no longer limited. Therefore, it is important to judge by project which work types are likely to yield high implementation benefits and which processes are better handled by conventional methods. Introducing excessive digitalization into small or simple works can actually increase the burden. On the other hand, i-Construction 2.0 tends to be effective in situations with heavy labor and verification loads—such as earthwork quantity management, large-area as-built verification, repetitive construction, and work in hazardous locations. In public works, the objective is not to introduce new technology for its own sake but to improve productivity without upsetting the balance among schedule, quality, safety, and accountability.

Key point 4: Shift supervision and inspection from document-centered to data-centered

What matters here is not eliminating documents per se. What matters is making 3D measurement data and construction histories obtained on site usable directly for verification and judgment. For example, if you can redesign processes that previously required measuring on site for each as-built verification, organizing photos, creating forms, and re-explaining things—so that they instead assume already-acquired data—both the quality and speed of verification improve. Furthermore, the procedures for remote attendance indicate that staged verification, material checks, and witnessing can be applied, and the approach is to select target work types and verification items through discussions between clients and contractors. In public works practice, it is indispensable to organize which items are verified remotely and which remain for on-site verification, and to design operations including evidence management such as video, audio, and capture storage. Without this, remote operations that should be convenient will only generate additional recording tasks.

Key point 5: Advance remote operations together with safety assurance, not only labor reduction

However, it is dangerous to regard remote operations merely as a labor-saving measure. In practice, the number of preconditions that differ from normal construction increases—communication environment, control latency, decisions for emergency stops, on-site monitoring systems, role allocation, training, and delineation of responsibility. In public works, where safety and accountability are strongly required, “being able to operate remotely” alone is insufficient. You must introduce remote work in light of objectives: can it reduce entries into hazardous areas, can it utilize expert knowledge remotely, and is it effective for night work or disaster response? The essence of i-Construction 2.0 is not to reduce the number of people at the site but to leave on site only those tasks that truly require a person to be there. If introduced without this perspective, you may end up with duplicated systems on site and remotely, increasing the burden.

Key point 6: Produce deliverables that remain usable after completion and link to maintenance

The meaning of using i-Construction 2.0 in public works is not limited to improving efficiency during construction. The very definition of BIM/CIM is intended to facilitate data use and sharing by contractors and clients across each stage of construction projects—investigation, surveying, design, construction, and maintenance—and to improve the efficiency of the entire construction production and management system. Accordingly, it is insufficient to finish by submitting deliverables at project completion. What should remain at completion are position information, geometry information, attribute information, construction histories, and verification records that anyone can use later, and deliverables in a state that can be passed on for future inspections, repairs, and renewals.

If this perspective is missing, data that were useful during construction become unused assets after handover. Because public works often involve changes in personnel and organizations, if final deliverables are person-dependent, maintenance will require re-surveys or re-entry. Conversely, if the 3D models obtained during the project, site measurement data, and verification information linked to positions are organized, they can be directly used for future repair design and current condition assessments. Whether i-Construction 2.0 is treated not as a one-year project efficiency measure but as the creation of an information foundation for public assets determines its success. The key practical point in public works is not to let the data created at the site end as a one-time thing.

Summary

i-Construction 2.0 is not about adding new machines or mechanisms to public works. It is important to establish a 3D-first assumption at the procurement stage, decide data handover rules in contracts and orders, apply the approach first to work types with high impact, shift supervision and inspection to be data-centered, advance remote operations together with safety assurance, and produce deliverables that remain usable after completion. Only when these six are connected will i-Construction 2.0 be a system that helps reduce site burdens, ensure quality, and maintain accountability. Conversely, implementing only one of these will hardly lead to productivity improvements across public works.

And practically, the easiest initial step is to reliably digitize site position information and measurement information. In public works, regardless of whether you consider as-built verification, construction records, or handover to maintenance, data with ambiguous positions are hard to use. Therefore, before introducing complex systems all at once, it is important to accurately fix positions on site, record necessary information there, and make it deliverable to subsequent processes. By using on-site measurement methods that are easy to handle—such as the iPhone-mounted GNSS high-precision positioning device LRTK—public works’ adaptation to i-Construction 2.0 can begin as a daily operational improvement rather than a deskbound concept. If you can change how measuring is done on site, changes in subsequent design, construction management, inspection, and maintenance will accelerate.