Table of Contents

• Introduction

• What is LRTK 360 Construction Records?

• Benefit 1: Aggregate Site Data with Centralized Information Management

• Benefit 2: Prevent Errors with High-Precision Location Records

• Benefit 3: Intuitive Site Understanding with 360° Photos + Point Cloud Data

• Benefit 4: Immediate Sharing and Remote Supervision via Cloud Sync

• Benefit 5: Operational Efficiency through Fixed-Point Monitoring and Automated Reports

• Introduction to Simple Surveying with LRTK

• Frequently Asked Questions

Introduction

Construction site construction records are indispensable for ensuring quality and preventing problems. But for site supervisors, aren't the daily recording tasks often a heavy burden? Traditional methods—taking construction photos and pasting them into ledgers, leaving handwritten notes on paper reports, and later reorganizing data back at the office—accumulate inefficient tasks. Human errors such as missed photos or omitted records can cause trouble during later verification or reporting. Also, information collected on site is often stored separately by each person, meaning the latest progress cannot be shared among all stakeholders. Such personalized, analog construction-recording methods reveal their limits as projects scale up, leading to reduced productivity and more mistakes.

As a trump card to solve these issues, attention is focusing on the on-site DX tool that digitizes site records with a smartphone: LRTK 360 Construction Records. By enabling centralized management and cloud sharing, this solution significantly changes how construction records are handled and directly reduces the workload of site supervisors while improving operational efficiency. This article explains what LRTK 360 Construction Records is and details the five benefits gained by adopting it.

What is LRTK 360 Construction Records? A DX tool that records sites with high-precision positioning × 360° photos

"LRTK 360 Construction Records" is the latest digital tool that combines a compact high-precision GNSS receiver (RTK device) attached to a smartphone with a 360-degree camera to accurately and efficiently record site conditions. LRTK (Real Time Kinematic) technology enables centimeter-level positioning on a smartphone and attaches high-precision coordinates and orientation information to every captured 360° site photo. Tasks that previously relied on manual effort—such as staking out positions or writing coordinates on photos—are automatically recorded simply by taking the photo with LRTK, eliminating hassle. Acquired data can be uploaded to the cloud on the spot and shared in real time with the office or remote stakeholders.

LRTK 360 integrates with various built-in smartphone sensors to offer a wide range of functions. For example, it can work with a smartphone LiDAR scanner to capture the surroundings and obtain high-density 3D point cloud data, and it also includes AR display functionality to overlay design models on camera video. Using these features, you can handle everything from surveying to checking construction status intuitively with a single device—truly a versatile DX tool for the site. Yet the operation is simple: attach a dedicated device (approx. 125 g) to your smartphone and launch the app. No complex settings are required, so any site staff can start using it immediately. In short, LRTK 360 Construction Records is a groundbreaking solution that completes the previously complex recording and measuring tasks on site with just a smartphone, creating an environment where anyone can easily and reliably record the site.

Benefit 1: Aggregate Site Data with Centralized Information Management

One of the greatest benefits of adopting LRTK 360 Construction Records is the ability to centrally manage all kinds of site information. Drawings, construction photos, notes, measurement data… these items, which were traditionally managed in separate files or ledgers by each person in charge, are consolidated on an cloud-based platform with LRTK. Data entered or photographed from a smartphone on site is immediately stored in the cloud, allowing all stakeholders to access the same up-to-date information. For example, centralizing construction photos and progress reports in the cloud eliminates confusion like "Where is the latest document?" or "Why do the site and headquarters have conflicting reports?" With information unified, you won't waste time searching for necessary records. Past meeting notes and inspection results can also be searched and viewed from the site, so you can quickly find the information you need, significantly speeding up decision-making.

Moreover, storing construction records in the cloud makes project-wide history management easy. You can later review construction progress history and past corrected items, which strengthens long-term quality control and audit readiness. Management based on paper documents came with risks of lost files and transcription errors, but digital centralized management greatly reduces those human errors. By centralizing information, the information gap between the site and the office disappears, allowing site supervisors to devote more time to the engineering and safety management tasks they should focus on.

Benefit 2: Prevent Errors with High-Precision Location Records

LRTK 360 Construction Records’ ability to clearly record "what was done where" with centimeter-level positioning is another major strength. Ordinary smartphone photos have GPS errors on the order of meters, making it difficult to precisely identify locations when reviewing them later. With LRTK, however, the coordinates of the shooting location can be automatically recorded with horizontal and vertical accuracy of a few centimeters. For example, the buried positions of pipes or concrete pour locations can be precisely surveyed and digitally recorded on site with LRTK. Location information is tagged to the captured photo data, so it is immediately clear on a map "which site location this photo shows." This reduces the need to add descriptions for each photo when preparing reports and enables smooth creation of accurate, error-free records.

High-precision location records also directly contribute to preventing rework and enhancing safety measures. Detecting discrepancies between the design drawing positions and actual construction positions on the spot prevents later problems like "that equipment was installed in the wrong place." LRTK’s value also shines in disaster situations. For example, immediately after an earthquake, if collapsed structures’ positions are quickly measured and recorded with LRTK, recovery teams can head to the correct locations. Even when networks are disrupted, LRTK that supports augmentation signals from Japan’s Quasi-Zenith Satellite System (Michibiki) can continue positioning, allowing even isolated sites to retain accurate location data. The reassurance of centimeter-level recording is a strong support for site supervisors. Because small oversights on site can lead to serious accidents, accurate, mistake-free construction records are crucial. LRTK 360 dramatically increases the reliability of site records with its precision, bringing record omissions and location identification errors close to zero.

Benefit 3: Intuitive Site Understanding with 360° Photos + Point Cloud Data

With conventional 2D photos and text-only records, it can be hard to recall site details accurately after time passes. LRTK 360 Construction Records captures the entire site with 360° photos and 3D point cloud data, allowing you to understand conditions later as if you were there. A 360° camera captures the full surroundings without omission, making it ideal for recording confined spaces or complex structures. For instance, when it’s difficult to take photos from all sides of rebar placement before concrete pouring or the state of equipment installation, a single 360° image records everything around you. This prevents missed photos of particular parts and improves the completeness of construction records.

Additionally, overlaying dense point cloud data (3D measurement data from laser scanning) obtained with LRTK onto 360° photos allows accurate visualization of site geometry. Parts that appear flat in photos can be intuitively understood in terms of dimensions and shape when combined with the point cloud’s three-dimensional information. For example, comparing point clouds of terrain or structures before and after concrete pouring lets you instantly confirm differences in as-built results, and you can measure distances, areas, and volumes on the spot from the acquired point cloud. Such visually rich records make it easy even for third parties unfamiliar with the site to grasp conditions, making them effective materials for explaining to clients or subcontractors. LRTK 360 Construction Records enables a complete digital archive of the site, achieving a level of site visualization not possible with paper photo albums. This is a DX-specific benefit that powerfully supports site supervisors’ tasks of "recording and communicating."

Benefit 4: Immediate Sharing and Remote Supervision via Cloud Sync

Real-time sharing of records collected on site is another major advantage of LRTK 360 Construction Records. Photos and notes taken on a smartphone are synced to the cloud with a single button, allowing remote offices and stakeholders to view the data immediately. There’s no longer any need to return from the site and hand over a USB drive or send files by email. When information is updated in the cloud, all stakeholders can track the latest status, enabling integrated management that erases the sense of distance between the site and remote locations. For example, if an unexpected issue occurs on site, photos and situation descriptions are immediately uploaded to the cloud so headquarters personnel can promptly understand the situation and give instructions. Daily progress reports can be shared on the cloud instead of submitting paper reports at weekly meetings, enabling early detection of delays or defects and prompt countermeasures.

Real-time sharing not only improves efficiency but also enhances construction management accuracy. Because clients and upper management can check site happenings in real time, project transparency increases and builds trust. For companies managing distant sites, it allows monitoring progress from the office without travel, reducing travel time and costs. With LRTK 360, you can even share AR footage from the site on a tablet and hold meetings, making complex explanations more accurate. Cloud sync and immediate sharing create a structure in which the barriers between site and office are removed and the whole team shares the same information, reducing miscommunications and missed confirmations and enabling faster response when problems arise. With the ability to "visualize" the site remotely, the workload need not fall solely on a single site supervisor; the entire organization can support the site.

Benefit 5: Operational Efficiency through Fixed-Point Monitoring and Automated Reports

LRTK 360 Construction Records also provides mechanisms that significantly streamline site supervisors’ administrative tasks. Representative features include fixed-point monitoring, which allows comparison of records at the same location over time, and automated report generation, which can create reports from recorded data with one click. When photo data is uploaded to the LRTK cloud, photos are organized on a map by shooting location and displayed in chronological order. This makes it possible to check photos taken continuously at the same spot in a format where temporal changes are immediately visible. For example, if you take fixed-point photos of key locations from foundation work through completion, you can smoothly review progress and changes in workmanship later. It’s easy to compare past and current photos to check finishes or verify whether problem areas have been corrected. Tasks that previously required digging up many photo files, aligning them, and visually comparing them can be done with one touch in LRTK. This visualization of progress helps site supervisors accurately grasp daily changes and improves the precision of reporting and as-built management.

Even better, various report forms can be automatically generated from recorded data. The LRTK cloud can populate photos, location information, and notes into predefined formats to output PDF reports immediately. When creating inspection records or as-built inspection reports, simply select the captured data and press a button to produce documents in the required format. Because you no longer need to manually paste photos or transcribe text, time spent on report creation is drastically reduced. Especially at project completion, when many documents must be prepared, LRTK enables seamless linkage between on-site recording and report creation, enormously reducing administrative burden. Electronic reporting also advances paperless processes, cutting the effort and cost of storing and mailing materials. With these functions, site supervisors are freed from tedious desk work and can focus on higher-value tasks. LRTK 360 Construction Records is a reliable partner that achieves total efficiency from the front lines of the site to office work.

Introduction to Simple Surveying with LRTK

So far we have looked at benefits in the area of construction records, but LRTK is also highly useful as a tool that enables "simple surveying" on site. The RTK technology underlying LRTK 360 Construction Records and the smartphone app combination allow site staff to perform surveying tasks without specialized equipment. For example, the LRTK app provides a one-touch function to record coordinates of control points and a coordinate navigation function that guides you to specified coordinates using on-screen guidance. Also, using the iPhone’s LiDAR to capture point cloud scans of terrain, you can automatically calculate the volume of fills and excavations from the acquired data. Using these functions, tasks that previously required a professional surveying team can be completed quickly by on-site personnel alone. In practice, there have been increasing cases where one person performed wide-area surveying with LRTK and immediately shared the acquired data via the cloud for stakeholder collaboration. Being able to realize simple surveying on site is a major advantage for operating with limited personnel, supporting the speed and efficiency demanded in the DX era. In addition to improving construction record workflows, LRTK’s ability to handle surveying makes it an innovative tool that comprehensively raises site productivity.

Frequently Asked Questions

Q1. What equipment and preparations are required for implementation? A. To use LRTK 360 Construction Records, prepare a dedicated compact RTK receiver, a 360° camera, and a compatible smartphone (iPhone is recommended at present). The RTK receiver is attached to the smartphone, and once correction information reception is configured, centimeter-precision positioning is possible. After installing the dedicated app, you can start using all functions such as photo capture, point cloud scanning, and cloud sync. There is no need to procure special surveying instruments or large cameras; the smartphone-centered simple configuration is a feature.

Q2. Can site staff who are not IT-savvy operate it? A. Yes. The interface is designed to be intuitive and simple to operate. On the app, pressing buttons starts positioning or captures photos, and complex settings and calculations are automated. For example, taking a photo automatically records coordinates, and pressing the "sync" button uploads data to the cloud. If staff are unsure about operation, basic training will quickly get them up to speed. The UI has been improved reflecting site feedback, so it is designed to be easy to use for everyone from veterans to newcomers.

Q3. Can it be used where there is no internet connection on site? A. Yes. LRTK 360 Construction Records’ positioning and recording functions work even without internet connectivity. Cloud sync can be performed later once you move to an area with reception, so you can first capture data in remote mountain areas and upload them later in bulk. For positioning, LRTK supports the Japanese satellite (Michibiki) augmentation signal CLAS, so centimeter accuracy can be maintained even when mobile networks are unavailable. In other words, it is designed so that recording work can continue offline and be integrated into centralized management later.

Q4. Is storage and sharing of acquired data secure? A. The LRTK cloud is designed with security in mind. Uploaded site data is encrypted and stored on secure cloud servers. Access rights can be managed to prevent anyone outside the project team from viewing records. Cloud backups also protect against data loss in case of device loss or failure. Compared to managing only paper ledgers or local PCs, more reliable data storage is achieved. Operation can be configured to comply with internal information security policies, so you can use it with confidence.

Q5. For what kinds of tasks can LRTK be used? A. LRTK’s applications are wide-ranging. Beyond the construction records and simple surveying introduced in this article, it is useful in as-built management, equipment inspection, infrastructure maintenance, and many other scenarios. For example, from pre-construction condition surveys, through progress recording during construction, to periodic inspections after completion, consistently acquiring and sharing location-tagged data with LRTK can drive DX across the entire project lifecycle. It can also be combined with data acquired by drones or other surveying equipment. LRTK is designed as a flexible platform to meet site needs and is a dependable partner for "digitizing the site as a whole."