Daibom Group Inc.

Daibom Hyakumatsu founded the company in Renzan, Kurashiki City. The founder was Daibom Hyakumatsu. Information can be learned through photographs and comics.

Founding of Daibom Hitoshi

Yamamoto Hyakumatsu founded a business in Kurashiki City, Tsunagashima (Okayama Prefecture) at age 15

Meiji 40 (1907): — Yamamoto Hyakumatsu founded personally: Founder: Yamamoto Hyakumatsu: Photo: Founding location Kurashiki City, Tsunagashima: Photo: Photo: Learn about the founder through manga

Daibun Matsumoto founded in Renjō, Kurashiki City (Okayama Prefecture) at age 15

Daibom Hyakumatsu became president, and the company was established with a capital of 499,000 yen.

Establishment of Daibun Group Co., Ltd. (Daibun Hayamatsu became president).

Showa 12 (1937): — Established Yamamoto Group Co., Ltd. (Yamamoto Hyakumatsu appointed president): Capital 499,000 yen

Established Daibun Group Co., Ltd.

Established Yamamoto Group Co., Ltd.

Received the Muroran Dock project from Hakodate Ship Canal Co., Ltd.

Contracted work for Hakodate Ship Canal Co., Ltd. (Mooring Dock).

Constructed Hakodate Ship Channel, Muroran Dock

Showa 16 (1941): — Hakodate Ship Channel Co., Ltd. received contract for Muroran Dock: Hakodate Ship Channel: Muroran Dock construction: Photo

Received the Uhin Dock project.

Contracted work for the Army Transportation Department (Uhin Dock).

1943 (Showa 18): Contract for Army Transportation Department construction (Uhin Dock)

Participated in the embankment work at the Okayama Prefectural Asahikawa Second Power Plant.

Entered power generation development work (Okayama Prefectural Asahikawa Second Power Plant dam and levee construction).

1953 (Showa 28): Entry into power supply development work (Okinawa Prefecture-owned Asahikawa Second Power Plant dike construction)

Applied the pressurized caisson (Newmatic caisson) method in the lower part of the Otagawa Bridge, earning high praise for technical skill.

Construction using the pressurized submersible (Newmatic Caisson) method (Otagawa Bridge lower section).

1954 (Showa 29): Construction using pneumatic caisson method (New Mechanical Caisson) : (Otagawa Bridge lower section work) : The adoption of this pioneering method earned our company high recognition for its technical capability, and we continued to receive pneumatic caisson projects thereafter : Otagawa Bridge lower section work : Photo

Entered the Tokyo International Airport construction work.

1957 (Showa 32): Entry into Tokyo International Airport construction work

Built Japan's first large diesel-pump dredging vessel and worked on disaster recovery after the Ise Bay typhoon, receiving a certificate of appreciation.

Built Japan's first large diesel-pump dredging vessel "Daiei Maru".

1958 (Showa 33): Construction of Japan's first large diesel-pump dredging vessel "Daiei Maru" : Leveraging mobility, we engaged in disaster recovery for the Ise Bay typhoon (Showa 34 September) and were awarded a letter of appreciation by the Minister of Construction and the Governor of Mie Prefecture : Daiei Maru : Photo

Entered the Shinkansen construction (Tokaido Shinkansen Chizuru construction zone).

Daibom Eikichi assumes presidency

1961 (Showa 36): Daibun Eiichi appointed president

1961 (Showa 36): Entry into Shinkansen construction (Tokaido Shinkansen Chizuru construction section)

Establishment of Daibom Yukei Association

1962 (Showa 37): Establishment of the (Financial) Daibun Yukei Association

Entered the Chikuma East construction zone of the Tomei Expressway.

Enter highway construction (Tomei Expressway, Shimizu East Construction Section)

1965 (Showa 40): Entry into expressway construction (Tomei Expressway Shimizu East construction section)

Publication of company history "Daibom Group 60 Years"

1967 (Showa 42): Publication of company history "Daibun Group 60 Years"

Completed the new company building at the headquarters (current main office).

Established Okayama main office and Tokyo headquarters, implementing separate departments for the president's office, sales, civil engineering, and construction.

Developed a large caisson manufacturing method using a floating dock.

Completion of the new headquarters (current main office) building

Floating dock

1971 (Showa 46): Completion of new headquarters (current main office)

1971 (Showa 46): Implementation of organizational reform. Establishment of Okayama headquarters and Tokyo headquarters

1971 (Showa 46): Implementation of president's office and separate sales, civil engineering, and architecture departments

1971 (Showa 46): Successful development of Japan's first large caisson production method using floating dock : Floating dock : Photo

Entered the lower part construction of the Odaishi Bridge.

Enter Honshu-Shikoku Link Bridge construction (Ooshima Bridge lower section)

1973 (Showa 48): Entry into Honshu-Shikoku Link Bridge construction (Ooshima Bridge lower section work) : Launch of electronic computer system (OMCOS)

The Higashiyama Tunnel construction on the Tohoku Shinkansen adopted the NATM method.

Tunnel construction using NATM method (Tohoku Shinkansen, Hirotachi Tunnel construction)

1979 (Showa 54): Tunnel construction using NATM method (Tohoku Shinkansen Hirotachi Tunnel construction) : Restoration of Inukai Kido's original house

The Shimajigawa Dam construction adopted the world's first RCD method.

First world use of RCD method for dam main body construction (Shijigawa Dam construction)

1980 (Showa 55): World's first RC dam main body construction using RCD method (Shijigawa Dam construction)

The world's largest caisson was constructed using the Newmatic Caisson method, and the project entered the lower works of the Meihokunishi Bridge and the Shimane-Ōshima Route of the Honshu-Shikoku Connection Bridge.

Construction of one of the world’s largest keystone using Newmatic Keystone method (Meihokunishi Bridge Phase I, lower western section)

1981 (Showa 56): Construction of one of the world's largest caissons using New Mechanical Caisson method : (Namaguchi West Bridge Phase I lower section western construction) : Entry into Honshu-Shikoku Link Bridge Jishima Sakado route construction : (Washiwa Mountain Tunnel construction)

An online system was established between the Okayama headquarters and the Tokyo headquarters and branches.

Online system established between Okayama headquarters and Tokyo headquarters and branches

1982 (Showa 57): Online system established between Okayama headquarters, Tokyo headquarters, and branches

High-strength soil was constructed by Masatane, earning the Technical Award of the Geotechnical Society.

High-grade soil construction using Masatane (Sekisui House, Yunoyama New Town development)

1984 (Showa 59): Construction of high-grade soil using Masato : (Sekisui House Yunoyama New Town development) : Received the Technical Award from the Soil Engineering Society (now Ground Engineering Society) for Showa 60 fiscal year : Yunoyama New Town : Photo

The construction of the Upper Goto National Oil Reserve Base was undertaken.

The shore protection ground improvement work at the Haneda Offshore landfill site was undertaken.

Enter offshore oil storage base construction (Jugo Island National Oil Storage Base construction)

Showa 60 (1985): — Entered the offshore oil storage base construction: (Construction of the Upper Goto National Oil Storage Base) — Entered the offshore expansion construction at Tokyo International Airport: (Seawall and ground improvement construction at the reclaimed land offshore of Haneda)

The construction of the Kansai International Airport island shore protection and sand laying works was undertaken.

Built the world’s first rotary feeder sand spreader ship "Shin Daiei Maru" and entered Kansai International Airport construction

Showa 61 (1986): Built the world's first rotary feeder sand spreading vessel "Shin Daiei Maru" and entered the Kansai International Airport construction project: (Airport Island seawall construction, Airport Island sand spreading) : Joined the Japan Construction Industry Federation : Kansai International Airport : Photo

Publication of company history "Daibom Group 80 Years"

Showa 62 (1987): Published the company history "Daibun Group 80 Years"

Establishment of the Administrative Headquarters (now Management Headquarters)

Showa 63 (1988): Established the Administration Headquarters (now Management Headquarters)

The western works of the Kisarazu artificial island were undertaken.

Enter Tokyo Bay Crossing Road construction (Kisarazu Artificial Island West construction)

Heisei 1 (1989): Entered the Tokyo Bay crossing road construction (Kisarazu artificial island western works)

Successful public demonstration of O.ECL method

Heisei 2 (1990): Successfully completed the public demonstration experiment of the O.ECL method

Unmanned construction of a Newmatic Caisson using the ROVO Caisson method was successfully completed (lower works of the Tanba Island Bridge).

Successful unmanned construction of Newmatic Keystone using ROVO Keystone method (Tanba Island Bridge lower section)

Heisei 3 (1991): Successfully automated the construction of the new mechanical caisson using the ROVO caisson method : (Tanba Island Bridge lower part works)

Establishment of the Technical Headquarters

Heisei 5 (1993): Established the Technology Division

Capital increased to 5.261 billion yen.

The accumulation soil removal work at the Unzen Fushin-dake was undertaken, and the Japan Construction Machinery Association President's Award was received in 1995.

Public listing of shares. Capital 5.291 billion yen

Heisei 6 (1994): Went public on the stock exchange. Capital 5.261 billion yen

The world's first helium‑mixed gas assisted unmanned caisson drilling method was commercialized (lower western works of the Meihokunishi Bridge Phase II).

First practical use of helium-mixed gas combined keystone unmanned drilling method (Meihokunishi Bridge Phase II, lower western section)

Heisei 7 (1995): World’s first practical use of the helium‑mixed gas caisson unmanned drilling method : (Namaguchi West Bridge Phase II sub‑structure western works) : Built the high‑concentration dredging vessel "Shin Daibun Maru" : Namaguchi West Bridge sub‑structure : Photo

Relocated to Nagatacho, Chiyoda Ward.

Acquired at the Family Heights Izumiotsu Cent Harbor City 6‑7 Building.

Relocated Tokyo headquarters and branches to Chiyoda-ku, Nagatacho

Heisei 8 (1996): Moved the Tokyo headquarters and branches to Nagatacho, Chiyoda

Acquired at the Hodogaya company housing.

Obtained individual seismic isolation assessment (Our company, Hodogaya employee housing)

Heisei 9 (1997): Obtained individual seismic isolation evaluation (our company Hodogaya housing)

Implementation of OMCOS NET.

Completed company-wide ISO9001 certification

Heisei 10 (1998): Completed company‑wide ISO9001 certification

Acquired at the Okayama branch.

Turn‑sweeper type high‑concentration dredging and discharge method.

Obtained individual vibration-damping assessment (Amano Co., Ltd. Okayama branch)

Heisei 11 (1999): Obtained individual seismic restraint evaluation (Amano Co., Ltd. Okayama Branch) : Obtained Ministry of Transport technical evaluation : (Turn Sweeper high‑concentration dredging and discharge method) : Won the 40th BCS Award (Kibi Kogen Elementary School)

Developed a center‑pole type deep foundation drilling machine and successfully conducted a public demonstration test.

Successful public experiment of the measurement system "ITEC-2".

ISO14001 company-wide certification obtained

Heisei 12 (2000): Completed company‑wide ISO14001 certification

Development of deep-sea submersible mixed-gas utilization technology.

Implementation of the center-pole deep foundation drilling method at the Nagasaki Expressway Hira Construction.

Introduction of a new personnel evaluation system

Heisei 13 (2001): Introduced a new personnel evaluation system

Established the PERS construction method research group

Heisei 14 (2002): Established the PERS method research group

Received the 5th National Land Technology Development Award.

Participated in the construction work of the 2005 Japan International Exposition.

Biocell Shot construction method received the 5th National Land Technology Development Award

Heisei 15 (2003): The Bio‑Cell Shot method won the 5th National Land Technology Development Award

Pursued and developed unmanned ultra-deep "Newmatic Caisson".

Developed the SUPER-ROVO Kesson method, pursuing full unmanned operation of the ultra-deep Newmatic Kesson

Heisei 16 (2004): Pursued complete unmanned operation of the ultra‑deep new mechanical caisson : Developed the SUPER‑ROVO caisson method

Launched the new information system (OMCOS21)

Heisei 17 (2005): Launched the new information system (OMCOS21)

Celebrated the centennial milestone and published the company history "Daibun Group Centennial History".

100th anniversary of founding, publication of company history "Daibom Group 100-Year History"

100th anniversary of founding

Publication of "Daibun Group 100-Year History"

Implementation of Construction Industry Occupational Safety and Health Management System (COHSMS)

Received the 16th BELCA Award (former Bank of Japan Okayama Branch Runes Hall)

Received the 49th BCS Award at the new headquarters building of the San'yō Shimbun.

Received the 49th BCS Award (Sanyo Shimbun New Headquarters Building)

Developed remote-controlled tablet load testing equipment, Bio-Cell Shot method, and smart seismic isolation construction method.

Developed a flat plate loading test apparatus operated remotely

Developed the Chigaya seed spraying method using the Bio-Cell Shot technique

Developed a smart seismic restraint system

Received the Japan Architecture Award and the Japan Society of Architecture Award. Daibun Manpei became president.

Received the 2010 Japan Architecture Award and the 2011 Japan Institute of Architects Award (Design Category)

Received the 2010 Japan Architecture Award and the 2011 Japan Society of Civil Engineers Award (Work Category) (Inujima Refinery Museum, formerly Inujima Art Project "Refinery")

Daibun Manpei became president

Completion of the all-round grab dredging vessel Big Blue

Received the 53rd BCS Award.

Completion of the installation work of the Nagatacho sewer pit.

Received the 53rd BCS Award

Received the 53rd BCS Award (Inujima Refinery Museum, formerly Inujima Art Project "Refinery")

Completion of reconstruction and pit installation work near 1-chome, Nagatacho, Chiyoda-ku, Tokyo (newmatic caisson method with a depth of 59.4m)

Started using part of the Okayama workshop and the company-owned land in Iwaki, Kobe City.

Started a solar power generation project using part of the Okayama workshop

Started a solar power generation project on the company-owned land in Iwaki, Kobe City; Aion Mall Okayama was completed

Started a solar power generation project using company-owned land in Iwago, Kobe City

Completion of Aeon Mall Okayama

Tokyo headquarters "Aoyama OHMOTO Building" was completed

Renovation of Okayama headquarters was completed

Keiichi Miyake appointed president