mlit’s bim pilot projects lesson...

Ministry of Land, Infrastructure, Transport and Tourism

MLIT’s BIM Pilot Projects

～Lesson Learned～

Ministry of Land, Infrastructure, Transport and Tourism /

Government Buildings Department

1

MLIT Information Technology Policies

MLIT Innovation General Framework, May 2007 Utilize the next-generation CAD so that we can improve

quality controls throughout building lifecycle.

Computer aided Acquisition and Logistic Support

(CALS/EC) Action Program 2008, March 2009 Utilize BIM through all building stages

GBD’s BIM Pilot Projects Announce to start to conduct some pilot government building

projects.

2

BIM Pilot Projects in MLIT/GBD since 2010

Challenges

1. What kind of information do we need?

2. What kind of hardware should we adopt?

3. Designer’s Copyright

4. Information Delivery from Designers to

Contractors in Design-Bid-Build methods

3

Floor area : 20,000㎡

Structure: SRC

Floor count: 10

Utilized BIM in Construction Phase

Aomi Government Building

for MLIT

Floor area : 42,700㎡

Structure : RC with Seismic Isolation

Floor count: 14 and 2 basement

Utilizing BIM in Construction Phase

Japan Meteorological Agency

[ PFI project ]

4

Floor area: 17,000㎡

Structure: RC


Maebashi

Government Building


Structure: RC


Design Phase ・Façade Design, Structural Design

・Estimate Takeoff of Concrete

・Natural Ventilation Simulation

・Interior Luminance Simulation

Construction Phase ・Integrated Execution Drawings

・Clash Detections

Shinjuku Government Building

for Ministry of Labor

Design Phase ・Façade Design, Structural Design

・Estimate Takeoff of Concrete




・Clash Detections

・Facility Management

5


Structure: RC

Floor count: 3

Design Phase ・Façade Design, Structural

Design

・Estimate Takeoff Of Concrete




・Clash Detections

Fujieda Government Building for Ministry of Justice

6

Ministry of Land, Infrastructure, Transport and Tourism

Shinjuku Government Building for Ministry of Labor

7

1. BIM Use not only for Schematic Design but for

Design Development

2. About five to six Simulations

3. Rough Estimation

4. Comparison of the BIM adopted Design Process

and Regular Process

8

①

②

road

site

9

Visualization of Complex Regulations

10

Wind Environmental Simulation

11

Sun Shadow Simulation

12

Zoning Simulation

13

Study Plans for Common Space

14

façade

Study for Interior, Storage Cabinets and Façade

15

Natural Ventilation Simulation

16

Study for Pedestrian Bridge

17

Clash Detections between Architectural and MEP Drawings

18

North-East Side Perspective View

19

Details of Façade

20

Main Stairs

実施設計段階の取組（６）

21

Perspective views of interior

22

beam

slab

Comparison BIM data with manual data

Takeoff Results Comparison by BIM and Manual

difference：0.53%

Colum,

wall

23

Person-days

BIM Traditional

Developed design Schematic design Briefing

24

１．Rules for Design-Bid-Build methods

２．Responsibility, Copyright and Liability

３．BIM for Facility Management

25

Thank you for your kind attention

26

mlit’s bim pilot projects lesson...

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