Longer Life Buildings

Fundamental Approach

We are proactively working to reduce waste and water consumption in cooperation with tenants and building management companies toward the realization of recycling society. For reconstructing buildings, we endeavor to reduce environmental impacts by promoting the 3R (reduce, reuse, and reycle) through the adoption of Longer Life Building designs that enable to reduce waste significantly and effectively utilizing resources.

《Results in FY2018》

Hulic's Longer Life Buildings completed based on the standards established in the “Hulic Guideline for Longer Life Service”: 11 buildings

Creating a New Standard of Buildings that Last 100 Years

"Hulic Guideline for Longer Life Service" is composed of three ideas, 1) high earthquake resistance and high durability; 2) smoother updating and renewal; and 3) advanced maintenance. High-grade building frames are ensured so as to continue to be used for over 100 years in safety, and on the other hand we have created the possibility to reform a building's exterior to be up-to-date through a flexibly modified layout.
Longer life buildings that can be used for over 100 years can reduce waste generation and resources used for reconstruction by 50% or more compared to the cases in which buildings are reconstructed every 40 years as before (standard plans). We have adopted longer life designs for all reconstructed buildings completed in 2017 or for which the construction was started in 2017.

"Hulic Guideline for Longer Life Service"

1 High quake resistance and High durability

Structural frames shall be robust so they can be safely used over 100 years.

  • Ensure the grade of quake resistance as high as hospitals and disaster prevention bases
  • Thoroughly control the quality of works by designating details of design conditions for concrete and construction materials

2 Smoother updating and renewal

We adopt a design capable of responding flexibly to future needs, and establish plans of updating and renewal without the need to make tenants move out.

  • Flexibly respond to future changes in use purposes and layout, with spare ceiling height room and floor loading capacity, as well as a flexible partition wall and a system ceiling.
  • Ensure the space to install spare pipes and equipment and prepare backup facilities, etc. so as to continue business even during the period of works for updating and renewal.
  • Especially in commercial buildings, adopt the interchangeable facade system capable to meet needs, in order to avoid the building exterior to become obsolete.

3 Ease of maintenance

We formulate plans enabling timely and meticulous maintenance in order to keep sophisticated building specifications and optimal building functions constantly.

  • Use gondola for maintenance, including the cleaning of window glass and inspections of the building exterior.
  • Install an elevator reaching the rooftop to carry in materials there.

POINT1

Responding to future changes in purpose of use and layout

From a viewpoint of a long-term use for 100 years, it can be expected that the use of building will largely change, for example, from an office building to a store or from a store to a restaurant. By providing spare ceiling height room and floor loading capacity in advance, it is possible to respond easily to future changes in use purposes and layout, as well as for renewal.

Ceiling height: 2.8m or higher
Loading capacity: 500kg/m2 in general, 800kg/m2~1t/m2 in heavy duty zone
Setting the loading capacity of piles and foundations: In expectation of the addition of weight to facilities, we set the loading capacity of piles and foundations in order to respond readily to the increase in load only with structural reinforcement of each floor.
System ceiling: Responding to needs for smoother updating of facilities in the ceiling, ease of maintenance, and changeability of partitions between tenants.

POINT2

Replaceable facade systems

Especially for commercial buildings, the exterior appearance is important. This is because a stylish appearance at the forefront of the age would attract customers. Therefore, we have adopted a system in which the facade (front exterior of building) can be separated from the main structure to update the exterior design without any legal restraints. Hulic Ginza Sukiyabashi Building located in Ginza, a major commercial area in Japan, has adopted the characteristic facade design expressing the scenery of a waterfront with willow trees. The two-tier facade with casted aluminum in curved shape installed on the curtain wall is separate from the main body of the building. For office buildings, we intend to adopt a simple and calm design with an exterior appearance that can become harmonious with the surrounding landscape as time passes.

Environmental Advantages of Longer Life Buildings

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