A project we were entrusted to handle from planning through construction
Renovation of the HVAC systems in an office building in Tokyo | 2024
The HVAC systems installed when the building was originally constructed reach the end of their service life after about 20 years. During that time, the surrounding environment has changed, and new equipment is constantly being introduced. Taking these changes into account, we proposed a comprehensive plan covering all aspects of the project and saw it through to completion, including the actual construction.
Winning the Contract Through a Relationship of Trust with Taikisha Ltd.
We have worked with this client for many years, building a strong relationship of trust. Our track record in successfully completing a large-scale heat source renovation project at a building in Tokyo in 2018, using a 200-metric-ton-class crane, was highly regarded, and we were subsequently awarded another large-scale project of a similar scale. This project was also awarded to us based on the relationship of trust we had built over the years.
There are countless medium- to large-sized buildings in central Tokyo that are around 10 stories tall and stand alongside restaurant districts. The Yoyogi and Harajuku areas, where this office building is located, are among these densely built-up areas. The road in front of the building entrance was by no means wide, leaving barely enough room to position a large construction crane alongside the building.
Dealing with a Situation Where Existing Information Is Unavailable
A key difference from typical projects was that, for security reasons, it was extremely difficult to obtain any existing information from the time the system was installed, such as construction drawings. Consequently, we had no choice but to inspect the piping systems with our own eyes and conduct an on-site survey, including taking measurements, to understand the existing installation. For the equipment to be installed on the rooftop, we proposed a chilled-water circulation air-conditioning system based on its environmental performance and operating costs.
Looking Back on the Project
Although renovation work is broadly referred to as such, the scope of responsibility depends on how the work is contracted. For this project, we began by developing the overall plan and, based on that plan, presented the necessary requirements to the client. We were then entrusted with virtually everything, from preparing construction drawings and cost estimates to determining the construction schedule after identifying potential problems. I believe that being entrusted not only with site management but also with the overall planning of this facility renovation is a testament to the trust the client has placed in our company.
Y. H., Engineering Department