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Greetings

Thank you for visiting the website of Nagayama Bridge Design Office Co., Ltd.
Our company designs PC bridges (complete upper and lower structures) and general civil engineering structures,
and we design from Kyushu to all over Japan and overseas.

Company Overview

Company name	Nagayama Bridge Design Office Co., Ltd.
Representative	Shojiro Nagayama
Address	5F Sun Building, 1-18-4 Tenjin, Chuo-ku, Fukuoka, Fukuoka Prefecture, 810-0001
Telephone number	092-735-8535
Business hours	9:00-17:00
Closed	Saturdays, Sundays, and public holidays
Business	PC bridge design (complete upper and lower structures), general civil engineering structures
Client introductions	General contractors and construction consultants

Business Contents

Our company is not in the industry of “making things” at construction sites using heavy machinery.
Public works are necessary to develop social capital such as roads, bridges, water supply and sewerage systems, and river embankments that are essential to our lives,but construction cannot be carried out without blueprints.
Our job is to provide consulting services mainly related to bridges and civil engineering structures, from investigations, surveying, and design to maintenance related to the development of such social capital.

List of achievements

Long bridge

Superstructure	Bridge length	Width
Extradosed Bridge	100.0+180.0+100.0=380.0m	22.5m
Extradosed Bridge	80.0+120.0+80.0=280.0m	17.0m
5-span continuous PC box girder bridge	48.5+75.0+110.0+75.0+48.5=357.0m	14.0m
7-span continuous PC box girder bridge	53.0+5@80.0+53.0=506.0m	16.0m

※Scrollable.

Many others

Special bridge & structure

Superstructure	Bridge length	Width	summary
8-span PC pretensioned hollow girder bridge	8@17.5=140.0m	10.4m	NEXCO　SCB method
PC Pier PC Simple Pretensioned hollow Girder	11.0m	72.0m	Harbor and fishing port facilities
PC Pier 6-span continuous PC pretensioned hollow girder	6@9.0=54.0m	8.0m	Harbor and fishing port facilities

Many others

General Bridges

Superstructure	Bridge length	Width	summary
Pretensioned PC simple hollow girder bridge Pretensioned PC connected hollow girder bridge Pretensioned PC simple T-girder bridge Pretensioned PC connected T-girder bridge Posttensioned PC simple hollow girder bridge Posttensioned PC connected hollow girder bridge Posttensioned PC simple T-girder bridge Posttensioned PC bridge Posttensioned PC simple T-girder bridge Posttensioned PC connected T-girder bridge Posttensioned PC composite T-girder bridge Posttensioned PC composite connected T-girder bridge Posttensioned PC simple hollow deck bridge Posttensioned PC continuous hollow deck bridge Posttensioned PC simple box girder bridge Posttensioned PC continuous box girder bridge Posttensioned PC simple corrugated web bridge π-shaped rigid frame with diagonal members	Omitted due to large number of cases

Restoration Design

Superstructure	Bridge length	Width	summary
Same as long span bridges, special bridges, and general bridges	Omitted due to large number of cases

Bridge substructure

Superstructure	Bridge length	Width	summary
Gravity Abutments Inverted-T abutment pontoon bridge pile foundation deep foundation pile	Omitted due to large number of cases

FEM analysis

Superstructure	Bridge length	Width	summary
Local design of superstructure, etc.	Omitted due to large number of cases

Linear Calculations

Superstructure	Bridge length	Width	summary
Bridges in general	Omitted due to large number of cases

Others

Superstructure	Bridge length	Width	summary
Temperature analysis during concrete pouring for substructure　etc.	Omitted due to large number of cases

CAD used

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Recruitment Information

Location	Phnom Penh
Education	University graduate
Language	English
Experience	No requirement

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