Protecting the world's infrastructure with rope access technology
Protecting the world's infrastructure with rope access technology
Even at sites where normal approaches are difficult, such as steep rock faces or unstable slopes, Keystone can reliably conduct surveys and inspections.
Utilizing years of experience and advanced rope access techniques, we perform close-up visual and contact observations while ensuring safety.
We identify risks hidden at the site and provide consistent high-quality service from survey to final deliverable creation.
Our inspection specialists, highly skilled in rope access techniques, move freely across rock walls and steep slopes.
They conduct close-up visual and hands-on inspections with speed, precision, and complete safety.
In particular, during rock face investigations, our inspectors combine advanced rope access techniques with deep knowledge of geology and rock structures.
This enables highly accurate assessments while minimizing the risk of overlooking critical damage.
To eliminate the risk of falling rocks hitting rope workers during operations, we implement thorough safety checks before starting and rigorous risk management during work.
We operate with the unwavering principle of “eliminating all foreseeable danger” and maintain a safety-first approach at all times.
Using rope access, our team approaches rock faces and steep slopes directly to inspect cracks, loose rocks, surface flaking, weathering, and collapse risks.
We ensure thorough inspections down to the smallest details—beyond the reach of drones or remote methods.
Our experts are trained to identify floating stones and unstable rock masses with precision, evaluating potential hazards others may overlook.
We assess the overall stability of the rock face by analyzing rock type, weathering levels, and fracture patterns.
Additional surveys and measurements are conducted as needed to ensure structural safety.
We utilize drones to capture wide-area views from above and to inspect hard-to-reach elevated structures.
By combining drone surveys with rope access work, we provide a comprehensive view—from broad terrain overviews to detailed close-up inspections.
At Keystone, we prioritize your budget above all.
No matter how tight the budget, we promise to deliver the best possible results within your constraints.
We’ve never turned down a project due to budget limitations. In fact, we view challenging budgets as opportunities to showcase our creativity and skill.Our highly trained, motivated team delivers exceptional value for money with custom-tailored solutions.
Even if your budget is undecided, we can provide a rough estimate.
As a general guideline:
(Height in meters + Width in meters) × ¥10,000
Estimates are based on the combined vertical and horizontal dimensions, not surface area.
We are also happy to provide a formal quotation quickly upon request.
We provide professionally crafted reports with a focus on clarity, accuracy, and usability.
[Report Contents]
• Executive Summary
• Survey Result Diagrams (elevation views, plan views, annotated photo elevations, etc.)
• Cross-Sectional Diagrams of Findings
• Photographs with Captions and Comments
All inspections are conducted in accordance with the relevant official guidelines.
Damage assessments and classification of necessary responses are based on those standards.
We also offer flexible formatting and organization of findings to meet your specific requirements.
This is an example of our deliverables.
These documents provide detailed descriptions of our technical methods and operational procedures.
Please download and review them for more information.
Q. Is traffic control required?
A. It depends on the site conditions, but generally, no traffic control is necessary.
Q. How do you handle insurance and safety management?
A. We are fully covered by workers’ compensation insurance and have maintained a perfect safety record with zero accidents over 33 years since our founding.
Q. Can work be performed in rainy weather?
A. Yes. Because our team is secured with ropes, work can proceed safely even in light rain and wind.
Q. How long is the delivery time?
A. We are flexible and will adjust the schedule according to your needs.
Q. How are anchors and rock bolts inspected?
A. Each one is tapped and checked by hand to detect any damage, looseness, or abnormalities.
Q. Can rope access be performed even if there is a pocket-type rockfall protection net?
A. Yes, although it requires advanced techniques. We can also perform percussion inspections and core sampling if necessary.
We offer cost-effective bridge inspection services backed by highly skilled and motivated staff.
We always put your budget first and strive to deliver the best possible results, even under strict financial constraints.
We never decline a project just because of a tight budget. On the contrary, we see challenging conditions as opportunities to apply creativity and technical expertise.
For detailed pricing, feel free to contact us.
We also offer flexible formatting and organization of inspection results based on your specific requirements.
Open year-round, 24-hour reception
Rope Access Survey Specialists
Keystone Corporation
6-1 Kotobukisaki, Kanagahara Nagaokakyo City, Kyoto Prefecture 617-0856
