Japan's 'top' building demolition technology is noise-free and dust-free

01/09/2025

The building was demolished in silence, unrecognizable from the outside, but inside there were machines and engineers working to remove every column, truss, and floor on each floor.

Recently, netizens in Vietnam stirred about the clip recording the demolition of a building in Japan. However, this demolition process does not raise every column of smoke and dust in the middle of the street or cause noise from explosives.

In fact, this demolition happened many years ago, but it still makes a strong impression on the demolition technique, especially with netizens. The work to be demolished is the 139m high Grand Prince Hotel Akasaka located in Tokyo.

cong nghe pha do cao oc dinh cua nhat khong tieng on khong khoi bui

The system of machinery and scaffolding on the top floor will tear down each floor gradually to the bottom

Since 2012, Taisei Company has demolished the building using the Tecorep eco-regeneration system designed to safely lower buildings over 100m tall by bringing a crane inside to dismantle each floor.

This demolition technology reduces dust and noise

Pillars are used to supporting the roof, which is gradually lowered to look like a building built upside down. First, the scaffolding system is installed outside to install soundproof panels to avoid noise. The cover is placed on the top of the building to prevent dust from escaping. The first step was to remove the furniture from June 2012 then the scaffolding was raised in August 2012.

Photos of the hotel in November 2012 (right cover) and after a month of demolishing the inside of the building in December 2012 (left cover)

The system of machinery placed on the highest floor can destroy, truss columns, floors. Then the devices will pull the floor and all the debris down a step.

The advantages of this technique go beyond safety and aesthetics. The Tecorep technique reduces noise by 17-23 decibels compared to other demolitions, reduces dust by up to 90%, and is said to be more environmentally friendly.

Each floor is demolished, the system will drop down until it reaches the 1st floor

This hotel is a symbol of Japan's former bubble economy. In the late 1980s, the hotel was always more than 90% full. However, the emergence of foreign-owned luxury hotel chains has created stiff competition in attracting guests to the hotel. Although in 2001, the hotel underwent a renovation, the average revenue per room before demolition was only half of what it was during the bubble economy.

Cam Linh (According to Japan Property, Japantimes)

Sources:

https://vietnamnet.vn/vn/bat-dong-san/thi-truong/cong-nghe-pha-do-cao-oc-cua-nhat-khong-tieng-on-khong-khoi-bui-774621.html