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A 3-Storey Multiple-Dwelling Wood In-fill Wall Demo House, Completed through Canada Wood’s Technical Support

Jae Choi

By Jae Choi

Technical Consultant/ Canada Wood Korea

May 6, 2019

The construction of a three-storey multiple-dwelling wood in-fill wall demo house, which was carried out through the technical support from Canada Wood Korea, was completed in March 2019. Before the Korean Acoustical Code regulations on floors between multi-storey housing units was strengthened, approximately more than 800 multiple-dwelling houses (so-called as Dagagu housing) were constructed with light-weight wood frame each year. However, since the acoustical code only approved standard concrete floor, it has been difficult to get building permits for Dagagu housing buildings designed with wood floors.

A multiple-dwelling house is a house with three stories in total and the sum of floor areas (gross floor area) is less than 660 m2. It was introduced in the 1990s by the government to ease the housing shortage. It is designed to accommodate many households. Each unit has rooms, kitchen, and bathroom so that each household can live independently. According to the statistics from the Ministry of Land, Infrastructure and Transport, a total of 14,620 multiple-dwelling houses were built last year, and the gross floor area was 4,371,000m². The gross floor area was similar to that of the approximately 50,000 detached houses that were completed last year.

This three-storey multiple-dwelling demo house was constructed in a hybrid method which combines a reinforced concrete structure and light-weight wood frame. The main structural components include columns on the 1st and 2nd floors and three storey floors built with reinforced concrete in order to satisfy the revised acoustical code requirements. The rest are non-bearing exterior and interior walls on the 1st and 2nd floors and the 3rd-floor structure and roof were constructed with light-weight wood frame. Mr. Seung Hee Kang, CEO Architect of Studio NOVA who designed the demo house said, “This method of applying wood infill walls to multiple-dwelling houses will balance the low-quality multiple-dwelling houses currently being built with concrete in Korea. It will contribute to the development of a healthy housing culture which is one of the main advantages of wood frame buildings.”, This will increase the possibility of applying wood in-fill wall systems in the Korean construction market.

With the knowledge accumulated through this multiple-dwelling wood infill wall demo house project, Studio NOVA is currently developing a design for another multiple-dwelling house in Incheon by applying the wood infill wall systems. This project will start its construction from June 2019 and the completion is due December this year. Canada Wood Korea will be providing continuous technical support to make it a high-quality wood infill wall project.