Crane Division Technical Planning Section Jousai UnyuKiko Co. , Ltd. with K-D2 PLANNER - Using BIM for 3D Hazard Contact Checks and Crane Proposals

Oct 26, 2026

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Crane Division Technical Planning Section Jousai UnyuKiko Co., Ltd. describes how K-D2 PLANNER supports construction proposals by enabling 3D BIM-based hazardous contact checks and optimal crane selection. After switching from 2D due to time-consuming manual 3D model work, the team used K-D2 PLANNER with general contractors’ 3D models for contact hazard verification, lift/capability studies, and girder tonnage proposals. The software’s subsidized purchase reduced rollout effort, improved client satisfaction, increased sales returns by enabling crane upsizing, and provided confidence that works followed simulations.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

Issues

Introduction

Benefits

Crane and Elevated Work Vehicle Rental

Overview of the case company

Going Past Crane Rentals Spurned Large Growth into Construction Proposal Company

Using K-D2 PLANNER for crane selection and proposal improvements

Subsidy and first deployment

Worksite Went as Per Simulation

Possibilities for Software in Demolition Work

Crane Division Technical Planning Section Jousai UnyuKiko Co. , Ltd. Noriyuki Otsuki Striving for differentiation from other companies with enhanced proposals to general contractors using K-D2 PLANNER. Taking the crane industry to great heights with BIM. Issues ● Used to use 2D, but became necessary to use 3D to check hazardous contact when placing girders. Issues included the enormous amount of time it would take to work with the 3D models we had created Introduction ● Use K-D2 PLANNER to make optimal crane selection and do contact hazard checks for building construction ● Taking advantage of the MLIT project to accelerate construction BIM allowed purchase of the software with a subsidy |
Benefits |
● A construction plan proposal in 3D gained more client satisfaction and allowed looking at a crane that would be optimal for the construction site, and proposing a larger-class crane than originally planned resulted in increased earnings
● Achieving a more efficient work process more prospective construction projects tobe accommodated, and resulting in more work orders being placed | | --- | --- | Jousai UnyuKiko Co. , Ltd. Crane and Elevated Work Vehicle Rental [https://www.jousai. co.jp/](https://www.jousai. co.jp/) The company in this case study introducing the software, Jousai UnyuKiko Co. , Ltd. , possesses a wide variety of equipment including large cranes, heavy-equipment transports, and 53-meter elevated work vehicles, and provides rentals at construction sites with sales locations reaching across the country. The Crane Division Technical Planning Section is headed up by Otsuki, who actively uses BIM in carrying out hazardous contact checks by way of 3D models, as well as takes it upon himself to make detailed proposals for construction sites. Going Past Crane Rentals Spurned Large Growth into Construction Proposal Company My job is supposed to be mainly planning and drafting diagrams for assembling and disassembling large crawlers. However, since introducing K-D2 PLANNER, I've been working on a proposal toa general contractor client regarding the order for proceeding with steel frame construction. We make use of K-D2 PLANNER with the general contractor's 3D model, and in addition to checking for contact hazards and proposing cranes, we are also presenting a plan that details things like tonnage of girder. It was 2017 and we were doing girder construction on a 750 t viaduct in Kyushu. As we were going to place girders, it came up that there would be contact with the crane. At the time, I was using 2D, but it was going to be necessary use 3D to do a hazardous contact check, so I created the 3D modeling myself. I got a simulation running, but it required a lot of time. And so I began looking for a 3D tool that would allow us to do studies of construction. Using K-D2 PLANNER® to Propose Downsizing a Crane from 130 t to 220 t Contributed to Sales Our first use of K-D2 PLANNER after introducing the software was a construction site where the BIM model was created by the general contractor. The general contractor approached us about crane location, what crane should be used, and to study whether the structure itself could be built. As I mentioned, we looked for a 3D tool that would allow us to do construction studies, and just then I was using K-D2 PLANNER's free trial version. It was intuitive and easy to operate, and as I could put together a construction plan efficiently, I was sure that "this project was going to be absolutely impossible without this software", and went ahead with purchasing it. And actually, K-D2 PLANNER is software eligible for subsidization under the Ministry of Land, Infrastructure, Transport and Tourism's project to accelerate construction BIM. After learning that we could apply for a purchase subsidy, we took advantage of it. We didn't have to prepare any special paperwork, so that alleviated any effort that would have been needed introducing the software.

FAQs

Why did the team shift from 2D to 3D for crane-related work?

Placing girders required checking hazardous contact, making 3D necessary to verify collisions and safety risks beyond what 2D could reliably handle.

How does K-D2 PLANNER improve crane proposal work in construction planning?

It enables optimal crane selection, performs contact hazard checks using 3D models, and supports detailed proposals such as lift studies and girder tonnage for the construction site.

What impact did adopting K-D2 PLANNER have on sales and client satisfaction?

It increased client satisfaction by producing a better 3D plan and improved earnings by supporting crane adjustments—such as proposing a larger-class crane when reach was insufficient.

Oct 26, 2026

Upload by Ezra