Round Table - French-Japanese Congress on Cities 2022
Roof structure - restoration and reconstruction in France, Vietnam and Japan
Table Ronde dans le cadre du Congrès franco-japonais sur les Villes 2022

Charpente en bois - restauration et reconstruction en France, au Vietnam et au Japon
The successive fires which occurred at the World Heritage
sites of Notre Dame de Paris and Shurijo Castle in Okinawa in 2019 gave a strong shock to the world, provoking
fierce arguments on the protection of traditional woodenbuildings. Like Japan, a country with a long history of woodenarchitecture, Europe, countries of masonry tradition, hasdeveloped its own manner of traditional timber techniqueand design for interiors and roof structures.
On the occasion of WOODRISE Tokyo, an international
conference on wood use, experts of conservation are togather in Kyoto from Japan, France, and Vietnam, anothercountry with rich wooden heritage, and discuss on thespecific subject of roof structure. Restoration and reconstruction over its invisible mechanism may requiredifferent technic and wisdom towards such wooden
heritages. New insights into the future direction ofWorld Heritage sites in Paris, Naha, Nara, and Hue arehighly expected.

Organized by SFJTI (Société franco-japonaise destechniques industrielles), ARCHI-DEPOT Corporation,
SST de l’ ambassade de France au Japon, Institut français
du Japon-Kansai
In collaboration with FCBA (Institut technologique forêt
cellulose bois-construction ameublement),
ENSTIB (École nationale supérieure des technologies etindustries du bois), Kogakuin University,
Otemon Gakuin, University, Tokyo University of Science,
Maison franco-japonaise
With the support of Takenaka Corporation, Sogo ShikakuCo.,Ltd.
Under the sponsorship of Ministry of Agriculture,
Forestry and Fisheries, Architectural Institute of Japan,
Home&amp;Environment Advanced Design Studies
Date: 13:30–17:50, May 28, Saturday, 2022, (door opensat 13:00)
Place: Institut français du Japon-Kansai salle Inabata(Max. 50 sièges / Yoshida-Izumidonomachi 8, Sakyo-ku,Kyoto) and On-line viewing
Fee: non SFJTI/MFJ/HEAD member: 2,000 yen, student:
1,000 yen (with documentation), free to ZOOM
Registration: https://forms.gle/FYhn9DAHFCEFTXpt7
Language: Japanese and French (with simultaneousinterpretation)＊During this conference, as a measure against covid-19,
we strongly request all visitors to measure thetemperature, disinfect with alcohol and wear masks, andwe will respect the limit of about 60% of the capacity ofthe venue.

Program.
13:00 Opening of the Doors
13:30-13:45
Opening Remarks
Tadahisa IWATA (President of the Société franco-japonaise des techniquesindustrielles,University of Tokyo)
Jules IRRMANN (Consul General of France in Kyoto)
Opening Speech
13:45-14:00
Risk management of wooden cultural properties / Daijiro KITAGAWA (Agency for CulturalAffairs,Japan)
14:00-15:30＜Session 1: Fire damages and reconstruction of wooden heritage＞
Reconstruction of the wooden roof structure of Notre-Dame de Paris / Frédéric EPAUD(CNRS)Fire damage to Shuri Castle at Naha / Yuji HASEMI (Waseda University)
Discussion /Commentator: Osamu GOTO (Kogakuin University)(Break 15:30-15:45)
15:45-17:15＜Session 2: Conservation and restoration of traditional wooden constructions＞
The restoration of the carpentry of the Toshodaiji temple, Nara / Kazuhiro SABURI (TakenakaCorporation)
Restoration of Royal Palace in Hue, Vietnam / Le Vinh AN (Duy Tan University, responsible
for the conservation and restoration of the Royal Palace in Hue)
Discussion/ Commentator: Benoît JACQUET (EFEO)
17:15-17:35
KI-TIME project report
17:35-17:50
Conclusion / Keita AOSHIMA (Otemon Gakuin University)
Closing Remarks / Riichi MIYAKE (Director of ARCHI-DEPOT Corporation; Tokyo Universityof Science)
Moderator: Rumi OKAZAKI (Shibaura Institute of Technology)

Notre-Dame de Paris Cathedral
Roman Catholic cathedral on the Isle de la Cité in Paris, representing early
Gothic Architecture, extensively restored by architect Viollet-le-Duc in thelate 19th century. Registered in the UNESCO World Heritage List in 1991;
The roof structure including the steeple was destroyed by fire in April 2019.

Speakers:
Daijiro KITAGAWA Agency for Cultural Affairs, Japan
Senior cultural properties specialist, Agency for Cultural Affairs. Finishing hisstudies at the University of Tokyo (Department of Civil Engineering), and Ecole
nationale des ponts et chaussées in Paris successively, he entered the Agency for
Cultural Affairs, where he is currently in charge of the protection of modern andcontemporary built heritages. PhD. (national land development / urban planning)

Frédéric ÉPAUD CNRS
Researcher at CNRS (laboratory of Archaeology and Regional Studies asw e l l a s a t U M R 6 1 7 3 a t To u r s . H e i s a s p e c i a l i s t o f r o o f s t r u c t u r e a n dframing techniques for both ancient and medieval ages focusing on theevolution of Romanesque and Gothic roof structure, timber, forestry andthe forest in the Middle Ages.

Yuji HASEMI Professor emeritus, Waseda University
Professor emeritus at Waseda University. Graduating from Waseda University(Department of Architecture) and its Graduate School, he entered the Building
Research Institute under the Ministry of Construction (actual MLIT), where hetook the posts of chief researcher and director of Fire Protection Laboratory
successively. In 1997 he joined in Waseda University as professor. Dr.Eng.

Shuri Castle
Royal Castle (gusuku) in Naha, Okinawa, on a hill overlooking Naha Port,
once a hub of overseas trade. Although the main hall and other buildings
were destroyed by bombardment during the Battle of Okinawa, the castle
site with other gusukus in Okinawa was registered in the UNESCO World
Heritage List as “Gusuku Sites and Related Properties of the Kingdomof Ryukyu". 9 buildings including the main hall rebuilt in 1992, weredestroyed by fire in October 2019.

Osamu GOTO CEO,Kogakuin University
CEO and chairman of Kogakuin University. After finishing the Graduate School of theUniversity of Tokyo, he entered the Agency for Cultural Affairs, where he elaborated thecreation of cultural property registration system as senior cultural properties specialist. In
2001 he joined in Kogakuin University as assistant professor, then professor. Since 2017,
he has been CEO and chairman of the board of this university. Dr.Eng.

Kazuhiro SABURI Takenaka Corporation
Director of Structural Engineering at Takenaka Corporation Osaka Office. After
graduating from Kobe University (Department of Environmental Planning) and its
Graduate School, he entered Takenaka Corporation in 1994. While working as structuralengineer, he obtained Dr.Eng at Kyoto University. He has been in charge of the structural
analysis and reinforcement of several ancient buildings, especially Toshodaiji Temple.

Le Vinh AN Duy Tan University
Dean of Faculty of Architecture and Applied Art at Duy Tan University, Da Nang City,Vietnam. After graduating from the Fine Art University of Hue. he started his career at Hue
Monuments Conservation Center. Between 2001 and 2009 he studied at Waseda University
where he obtained PhD. He has been in charge of the restoration and reconstruction projects
in Hue Imperial City such as Thieu Phuong Vien royal garden and Thai Hoa Dien main palace.

Toshodaiji Temple
Buddhist temple at Gojo-cho, Nara. It is the head temple of the Ritsu
sect, one of the six sects of Nanto (southern capital). The founding
monk Ganjin (Jianzhen) who transferred sutras and even architectural
style from China, spent his las years here. This temple complex has
many cultural properties including the Main Hall and the LectureHall built in the 8th century. It is registered in the UNESCO World
Heritage List in 1998.

Benoît JACQUET EFEO
Associate professor at Ecole française d'Extrême-Orient, and lecturer at the Graduate Schoolof Architecture of Paris La Villette. Since 1999 he has been residing in Japan and pursue theresearch on Japanese modern architecture, wooden architecture and the revitalization ofabandoned buildings in Japan as architect, architectural historian and theoretician, He as been
invited researcher at Kyoto University (2008-2019) and Hiroshima University (since 2010)

Keita AOSHIMA Otemon Gakuin University
Associate professor at Otemon Gakuin University. After finishing the Graduate Schoolof Shibaura Institute of Technology, he started the practice as architect, then joined inMekele University in Ethiopia where he took the lead for establishing the School ofRestoration. Finishing his study at Ecole d’ architecture at Paris-Belleville he joinedin his alma mater as project lecturer, pursuing the study on wooden construction.

Rumi OKAZAKI Shibaura Institute of Technology
Associate professor at Shibaura Institute of Technology. Finishing her studies ofundergraduate, master and doctor courses at Keio University, focusing on Africanarchitecture, she expanded her research at CNRS in Paris as visiting researcher. Returning
back to Japan, she practiced disaster responding facility management at Shigeru Ban
Architect and Associates, then joined in Shibaura Institute of Technology. PhD.

Hue Royal Palace
In the city center and suburbs of Hue, situated in central Vietnam, remain
a number of royal facilities such as royal palace, mausoleums, Buddhist
temples, and ruins of the Nguyen Dynasty from the early 19th century.
Some of them are registered in the UNESCO World Heritage List in 1993.