How to Display Drawings in AR on the Job Site? 7 Things to Check Before Implementation

Table of Contents

• What does displaying drawings in AR mean?

• Why is pre-deployment verification important?

• Checklist item 1: Is the purpose of deployment and the target operations clear?

• Checklist item 2: Is the drawing information used on-site organized?

• Checklist item 3: Has the approach for reference points and alignment been decided?

• Checklist item 4: Can differences between existing conditions and the current situation be confirmed?

• Checklist item 5: Are height, orientation, and viewpoint scenarios organized?

• Checklist item 6: Have stakeholders' roles and responsibilities and the verification procedures been defined?

• Checklist item 7: Is there a workflow for recording and reflecting corrections?

• How to establish AR drawing display on site

• How to further advance on-site verification

What Does It Mean to Display Drawings in AR

Displaying drawings in AR on site means checking floor plans, layout plans, elevation drawings, cross-sections, and simple three-dimensional information by overlaying them on the actual site scenery and the appearance of existing structures. The purpose is not simply to view drawings on a device, but to make it easier—while standing in place—to understand where things will be located, how close they are to existing elements, and how they will affect passages and work spaces. Rather than replacing the drawings themselves, it can be thought of as using them as auxiliary guides to make the meaning of the drawings easier to understand on site.

On traditional sites, the cycle of looking at drawings to understand the content, visiting the site to confirm conditions, and returning to the drawings as needed has been repeated. This flow is a basic method that has been used for a long time, but on sites with many existing installations, sites with restrictive site conditions, or sites where interfaces are complex due to renovation or replacement, the burden of mentally translating drawing information into spatial understanding becomes large. Even if experienced staff can handle this, not all stakeholders will necessarily be able to understand it with the same level of accuracy.

Displaying drawings in AR makes it easier to supplement on-site some of the mental transformations you had been doing. For example, something that looks sufficiently distant in a plan view can feel cramped or closer than expected when overlaid on the actual site. Conversely, elements that look tight on the drawing may in practice present no problem for work or passage on site. The ability to quickly grasp this on-site sense is a major value of AR display of drawings.

Also, displaying drawings in AR is not something that requires a large-scale 3D model. In practice, it is often sufficient to organize only the necessary elements—grid lines, reference lines, outlines, key dimensions, and the positions of items to be checked—and simply overlay them on site. What matters is not showing everything in 3D, but making it easy to share on-site the information needed for decision-making. This simple use is especially helpful for position checks and for gauging distances to existing structures.

Many practitioners who search for "drawings AR on site" are likely more interested in how to make on-site checks easier than in how the technology itself works. The purpose of displaying drawings in AR is not the novelty of the visuals. It lies in reducing confusion on site, cutting down on repeated explanations, and making it easier to notice anything amiss before construction. For that reason, it is extremely important to confirm what should be checked before implementation.

Why Pre-Implementation Checks Are Important

A system that displays drawings in AR may at first glance seem straightforward and convenient. However, whether it will actually be useful on site depends far more on how thoroughly pre-deployment checks have been carried out than on the mere ability to display content. Many of the reasons it feels difficult to use in the field are not the devices or display technology themselves, but that the purpose for using it is unclear, drawing information is not organized, and standards are not aligned. In other words, if introduced without sufficient preparation, a seemingly useful system can actually become a burden on the site.

A typical reason AR drawing displays stop being used on-site is aiming to show everything. If you try to handle position verification, comparison with existing conditions, coordination meetings, change management, and as-built verification all within a single system, the amount of information to prepare increases and both operation and explanation become more complex. As a result, site staff become unsure what to use it for and ultimately revert to traditional drawing checks. That is why it is necessary to narrow down the purpose and specific use cases before introduction.

Also, simply displaying drawings in AR on site does not immediately create value. If the criteria for overlaying are unclear, the way it appears will vary slightly from person to person. If you want to compare with the existing installation but use it without checking the differences between the as-built conditions and the drawings, you'll lose sight of the cause of any discomfort. If assumptions about height and orientation are not shared, things may look aligned on a plan but feel shifted overall on site. These kinds of problems can largely be prevented by checking them before implementation.

Furthermore, on site multiple stakeholders use AR drawing displays. Designers prioritize dimensions and consistency, the construction team looks at workability and task sequencing, and management focuses on ease of use for maintenance and for explanatory materials. If each group adopts it with different expectations, evaluations will diverge even when they are looking at the same screen. Pre-implementation checks are also the process of narrowing these expectation gaps and aligning on what you want to improve.

Pre-deployment checks are important to ensure that AR display of drawings does not end up as merely a special way of presenting things, but is naturally integrated into on-site work. If introducing a new technology becomes the goal in itself, the reasons why it falls out of use on site will not be apparent. By covering the checklist items from the start, even if problems occur after deployment it becomes easier to see what needs to be fixed. If you want to make a system that is truly useful on site, pre-deployment verification should be considered the most important step.

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Checklist Item 1: Are the implementation objectives and target operations clearly defined?

The first thing to check is whether the implementation purpose and the target tasks are clear. When introducing AR display of drawings on site, many people first think about what will become visible. However, in practice, unless you decide beforehand which tasks you want to make easier and how, the way it is used will vary. Whether you want to speed up pre-construction position checks, verify coordination with existing structures, shorten meetings, or make sharing changes easier will greatly affect both preparation and operation.

For example, if the purpose is position verification before construction, the required information is that which directly determines position, such as gridlines, key dimensions, outlines, and reference points. If the purpose is to check interfaces with existing structures, it is important to show the relationships with surrounding equipment and passageways. For coordination meetings, being able to easily share how it will look when completed and the on-site impression is more valuable. In other words, even with the same AR drawing display, if the purpose differs, the displayed content and the confirmation flow will change.

Also, it is important not to expand the scope of target tasks too much. Trying to cover everything from pre-construction checks, meetings, change handling, to as-built verification right from the start makes preparation heavy and makes it easy for the site to lose sight of when to use it. In the early stages of implementation, it is easier for the site to adopt the system if you narrow the focus to one or two tasks and achieve clear results in those areas. What the site finds useful is not a multifunctional system, but a solution that makes the checks they are currently struggling with even a little easier.

Furthermore, when determining objectives, it is essential to include the users' perspective. A presentation that designers find convenient can contain a lot of unnecessary information for on-site personnel and actually become more confusing. The purpose of implementation should be defined not only for the people who create the drawings but with the aim of reducing the burden on on-site decision-makers. If this is misaligned, a seemingly useful system will not be used in practice.

When the purpose of implementation and the target tasks are clarified, the subsequent preparations become much easier. This is because it becomes clearer which drawings to use, which reference standards to align with, which areas to focus verification on, and who will check what. If you truly want to make effective use of AR drawing displays on site, it is essential to define at the outset what you are doing it for in concrete operational terms.

Checklist Item 2 Are the drawings and related information used on site organized?

The second item to check is whether the drawing information used on-site is organized. Drawings for design and drafting contain a large amount of information. That is necessary, but when used for AR display on-site, not all of that information is useful as-is. Rather, if the necessary reference lines and items to be checked become buried in unnecessary information, people on-site will not know what to look at and verification will take longer.

When organizing drawing information for use on-site, it is important to set priorities according to the purpose of the check. For position verification, the focus will be on grid lines (centerlines), outlines, main dimensions, and reference lines; when comparing with existing conditions, it is important that relationships with surrounding equipment and existing structures are easy to see. If you want to consider construction procedures, elements related to traffic routes and temporary facilities are also necessary. In this way, the information that should be shown changes depending on what is being checked.

Also, it is important that sight lines do not become confused on site. When drawings contain too much information, people tend to take longer to make decisions even though everything is displayed. Because AR overlays information onto the actual site view, it is more susceptible to the effects of unnecessary information than when viewing on paper or a screen. For that reason, on-site drawings should be organized so that, rather than taking office drawings out as-is, only the information necessary for inspection is brought to the forefront.

Furthermore, organized drawings are also effective for sharing with stakeholders. People who are accustomed to reading drawings can cope even with only overall information, but for those entering the site for the first time, subcontractors, or client-side personnel, it is easier to understand when it is clear what they should be looking at. Because the value of using AR displays of drawings on-site also lies in making on-site understanding more consistent, organizing information is the prerequisite for that.

A checklist item to verify whether the drawing information used on site is organized may seem unremarkable at first glance, but it is highly effective in actual work. Even if the display technology is excellent, if the drawing information is not organized for on-site use, it will not make decision-making any easier. Before introducing AR displays for drawings, it is important to first review whether the information has actually been organized to meet the real needs on site.

Checklist Item 3: Has the approach to reference points and alignment been decided?

The third item to check is whether the reference point and the approach to alignment have been determined. A major reason AR drawing overlays become unstable on site is ambiguity about which point is used as the reference when aligning to the field. Even with the same drawing, if different people place the overlay slightly differently, the appearance and the judgments will change. In that case, a system that should be convenient ends up increasing uncertainty. That is why it is necessary to clarify the reference point and the alignment approach before implementation.

A desirable reference point is an element that is easy to find on site, easy for multiple people to share, and unlikely to change. Candidates include building corners, edges of existing structures, known lines on the floor, and on-site markers corresponding to street centerlines. It is important to choose a point that anyone on site can easily identify as the same location, rather than a point that is merely convenient on the drawings. If the reference point is unstable, all subsequent checks will be unstable.

Also, it's effective to decide not only the reference points but also the order in which you will perform the alignment. If you follow a flow—aligning an initial point first, then checking orientation and rotation with a reference line or another control point, and finally moving on to the key inspection areas—you will reduce confusion on site. Conversely, stacking adjustments by feel causes small differences to accumulate, making it hard to tell where the shift occurred. Sharing the alignment strategy improves on-site repeatability.

Furthermore, it is important not to leave the concept of reference points as the tacit knowledge of the person in charge. Even if only the design team understands it, it is meaningless if the people using it on site view it with different assumptions. You should explicitly share in advance which point will serve as the reference and which elements will be overlaid to check for alignment. This is more an operational issue than a technical one, but in the field these operational differences have a very significant impact.

If you plan to use AR displays of drawings on site, it is not an exaggeration to say that the approach to reference points and alignment is more important than the display features themselves. If you want to speed up position checks, it is important that users do not get confused each time they look and that anyone who looks can easily arrive at the same conclusion. For that reason, these verification items must be firmly addressed before deployment.

Checklist Item 4: Can the differences between the existing conditions and the current state be confirmed?

The fourth item to check is whether you can verify the difference between the existing conditions and the current on-site situation. When using AR to display drawings on site, if you assume the reality matches the drawings exactly, you may encounter unexpected discrepancies. Especially at sites undergoing renovations or updates, it is not uncommon for the positions of existing equipment to be slightly different, for temporary installations to have been added, or for finishes to have changed. If you overlay drawings without checking these differences, you will not be able to tell whether the problem lies with the display, the drawings are outdated, or the site has changed.

First, consider which existing element to use as the reference for verification. There are many existing items on site, but you cannot use all of them as references at once. You should decide in advance on elements that are unlikely to change and easy to compare—such as building corners, ends of existing structures, distinct lines on floor surfaces, and the positions of fixed equipment. Using these as starting points makes it easier to identify where discrepancies with the current conditions exist.

Also, the item of whether you can check discrepancies with the as-built conditions directly affects the reliability of position verification. For example, something may appear to align perfectly at one location but look slightly offset at another. If you cannot determine whether the problem is how the reference was established, a discrepancy between the drawings and the as-built conditions, or changes in existing installations, on-site decision-making will be stalled. If the approach to checking discrepancies with the as-built conditions is organized before implementation, isolating the cause will be faster.

Furthermore, verifying existing conditions is important for detecting anomalies before construction. Even if the drawings look fine, on-site you may find that existing elements are closer than expected, that they have a greater impact on passageways, or that there is insufficient working space. The later such anomalies are discovered, the greater the impact of rework. Having a system to confirm differences from the current conditions makes it easier to catch those anomalies earlier.

If you truly want to make AR displays of drawings useful on-site, it's important not to assume the drawings are entirely accurate. By keeping an eye out for discrepancies with the as-built conditions, it's easier to identify which parts of the display can be trusted and which should be rechecked on-site. This is a practical verification item you should be sure to address before implementation.

Checklist Item 5 Are height, orientation, and viewpoint scenes organized?

The fifth item to check is whether height, orientation, and viewing scenarios have been organized. For AR display of drawings, aligning only the planar position is not enough. What tends to create a sense of discomfort on site are discrepancies in height, differences in orientation, and variations in impression depending on the viewer’s position. Even if it appears to match in plan, on site it may look too high, too low, slightly rotated, or give a different impression depending on eye level. Sorting these issues out before implementation leads to stable use on site.

Regarding heights, it is necessary to clarify which reference plane will be used. There is not a single height to use as the on-site reference: the floor surface, the finished surface, the top of existing structures, the top face of the installation foundation, and so on. Even if values are managed numerically on drawings, if it is not shared which height to align to on site, the result will appear inconsistent. This is especially true for equipment upgrades and where structures interface, as slight differences in elevation can become major problems.

The same applies to orientation. If it is unclear which direction to use as the reference when overlaying — the drawing's north, the building's axis, the street centerline, the alignment of existing structures, etc. — the result will look as if it has been rotated slightly. This kind of discomfort is hard to notice when checking only a single point and can become very noticeable as soon as you change location. Before implementation, it is important to decide which direction to prioritize for alignment.

Also, organizing the viewpoint scenarios is useful. On site, people tend to want to check things from every angle, but in practice it is more effective to narrow the viewpoints to those with high verification value. If you decide on viewpoint scenarios according to the purpose — for example, how something appears from a corridor, from the work position, or from a user's eye level — checking becomes considerably easier. Rather than moving around and looking without limit, it is more practical on site to first identify the important viewpoints.

The item of whether height, orientation, and viewpoint/scene have been organized is not a matter of presentation tricks but relates to the stability of verification conditions. If you want to establish AR drawing displays on site, it is essential to share in advance which conditions will be considered correct when viewing them. If you want position checks to be performed quickly and without fluctuation, this organization must be completed before implementation.

Verification Item 6: Have the stakeholders' roles and responsibilities and the confirmation procedures been determined?

The sixth item to check is whether the roles of the parties involved and the verification procedures have been decided. Even if drawings are displayed in AR on site, if people use them differently confusion will outweigh convenience. If it is unclear who will align the reference, who will assess the validity of positions, who will check for discrepancies with existing installations, and who will record the results, everyone on site tends to merely look on without real purpose. That prevents decisions from moving forward.

Inspection procedures are just as important. For example, simply following a flow — first checking reference points, then checking plan positions and noting any discrepancies in height or orientation, and finally focusing on the key areas — will make on-site inspections much more consistent. Conversely, if the order changes according to the conversation on site, important checks can be missed or the same areas can be reviewed multiple times. To reduce rework, it is important to make the inspection itself a reproducible process.

Also, having clear role assignments makes it easier to leverage the differing perspectives of stakeholders. If roles are well defined—for example, designers check drawing coordination, construction personnel check constructability, and managers check maintenance and safety—everyone can verify the same display from different viewpoints. This not only enriches on-site discussions but also helps prevent overlooked checks. Without role assignments, blind spots that no one is monitoring are likely to arise.

Furthermore, there is no need to build out verification procedures in detail from the start. Rather, they are more likely to become established if you first create a minimal workflow that can be repeatedly used on site. If it is clear in which order checks should be performed so users won’t get confused, and where to stop and recheck, AR display of drawings is more likely to become part of daily operations rather than a makeshift convenience feature.

A checklist item asking whether stakeholder roles and confirmation procedures have been defined greatly influences ease of use after implementation. If you want to use AR drawing displays on-site, designing the on-site workflow is as important as the technical aspects. Simply having this organization in place can make a big difference in the speed and stability of position verification.

Checklist Item 7: Have you established a process for recording and applying corrections?

The seventh item to check is whether a workflow for recording and reflecting corrections has been established. The results of verifying drawings with AR on site should not end there; they need to be preserved in a way that leads to subsequent decisions and future checks. If on-site observations—such as noticing something feels off, making slight positional adjustments, or finding that the distance to existing structures differed from expectations—are lost on the spot, the same checks will have to be repeated next time. Even with convenient verification methods, this will not improve overall site efficiency.

First, what’s necessary is to record what you saw, what you regarded as a problem, and how you responded. Rather than merely noting that the appearance was slightly off, if you can clarify exactly where the issue was, against which standard, and what kind of discomfort or discrepancy you felt, it will be easier to apply that to the next meeting or drawing revision. This is less a record-keeping task and more the process of turning on-site knowledge into formal information.

What is important next is the process of feeding those findings back into the drawings and related data. If corrections made on-site are not reflected in the official drawings, another person will work based on the old assumptions. As a result, the same discussions will be repeated at the same location, and rework will not be reduced. When there is a flow for reflecting corrections, the previous verification becomes the standard for the next time, and the value of AR drawing displays accumulates.

Also, how records are kept and corrections are reflected affects the speed of responding to changes. If you can see which correction was made when and which field verification results have been incorporated, it becomes much easier to compare later and to explain. The more changes a site has, the more important it is to put this process in order. On site, it often takes more time to understand the content of a change than to make the change itself.

Before introducing AR visualization of drawings, it is critically important to think through this workflow. A system that only allows people to view the drawings may be convenient in the short term, but it rarely leads to reduced rework across the site. By contrast, if what people see feeds into the next drawing, the next check, and the next construction decision, the value of using AR with drawings grows with each iteration. As a checklist item to review before rollout, this must never be postponed.

How to Establish AR Drawing Overlays on the Job Site

To establish AR displays of drawings on site, it’s important not to start too broadly or on too large a scale. Trying to make the system do everything increases the preparation burden and makes it harder for people on site to know when to use it. It’s easier to succeed by beginning with areas where the benefits are obvious — processes that take a long time for position checks, points that repeatedly cause trouble when comparing with existing conditions, or situations where explanations and meetings take a long time.

Also, it is important not to dismiss the usability issues that come up from the field. Voices such as unclear standards, too much drawing information, displays ordered differently from the order people want to see, and difficulty tracking update differences are not signs that the field dislikes the new system, but requests to have it adjusted to fit practical work. The more worksites that pick up and improve these issues, the faster AR display of drawings will become established. Rather than creating a perfect workflow from the start, workflows that can be adjusted while in use better suit the field.

Furthermore, it is effective to make the benefits for each role visible. Construction management gains the advantage of reducing time spent on checks and explanations; site personnel gain the advantage of being able to grasp positional relationships more easily; and designers gain the advantage of quickly identifying differences from the current conditions. When these values are shared, the site becomes more positively inclined to use the approach. A mechanism that is convenient for only a subset of people is unlikely to spread across the entire site.

The most important thing when aiming for adoption is not to treat AR displays of drawings as a special way of presenting information. It is necessary to make them something that can be naturally incorporated into everyday verification tasks—such as pre-construction checks, confirming interfaces with existing installations, comparing changes, and meetings. If it becomes a special technique used only by certain personnel, it may cease to be used the moment responsibility changes.

Establishing AR drawing displays is not about bringing new technology onto the site, but about gradually making the on-site verification workflow easier. If daily checks lead to less uncertainty, fewer back-and-forth explanations, and less rework, the site will naturally continue to use it. For that reason, it’s important to start small and nurture it into a form that fits the site.

How to further advance on-site verification

As we have seen, before displaying drawings in AR on-site it is important to cover seven items to check: clarifying objectives, organizing drawing information, establishing reference points and alignment, verifying existing conditions, organizing heights, orientations, and viewpoints, assigning roles and confirmation procedures, and the flow for recording and reflecting corrections. By putting these in place, AR display of drawings becomes not merely visualization but a practical system that supports on-site verification. To reduce rework, stabilizing the preconditions for verification is more important than the display itself.

Furthermore, if you want to take AR display of drawings further, you need a perspective that links the spatial relationships understood on site directly into the flow of position checking and positioning. If overlaying drawings to view and understand them and handling actual positions more reliably are treated separately, some re-interpretation will inevitably occur. If you want on-site position verification to be faster and more accurate, an approach that reduces this re-interpretation is effective.

When considering such operations, measures that allow incorporating high‑precision positioning in a form that is easy to use on-site—such as LRTK (iPhone‑mounted GNSS high‑precision positioning device)—are also effective. If AR display of drawings speeds up on‑site understanding and can be linked to high‑precision position verification as needed, the value of on‑site checks is likely to increase further. Organizing viewing drawings, overlaying them on-site to understand them, and confirming required positions into a single workflow will become increasingly important at job sites going forward.