A pilot project of the German Federal Ministry of Transpor-tation (BMVI) for the integration of BIM 3D construction en-gineering data with existing GIS environmental and plan-ning data for the optimization of infrastructure planning.

BAB A99 BIM and GIS Pilot Project

• 2D and 3D GIS data preparation and BIM integration

• 3D BIM model data preparation and integration

• 2D und 3D visualization of results

Client

Project Execution

Project Period

Services

Project Leader

Project Partner

SSF Ingenieure AG in cooperation with the Autobahndirektion Südbayern

SSF Ingenieure AGPSU│Prof. Schaller UmweltConsult GmbH

2016

SSF Ingenieure AG

Esri Deutschland Group GmbH

Fig.2: The integrated BIM and GIS GeoDesign Concept

Fig.1: Project area and bridge structure

The purpose of the project is an eight-lane expansion of the federal motorway A99 between the interchange Munich North and the junction Haar, with a length of 18,6 km (Fig.1). Be-sides renovation of bridges and superstructure, noise abate-ment measures are also planned.

The focus of this pilot project are the future requirements for a frictionless information sharing between engineers and en-vironmental planners, to optimize all required environmental concerns from the start of the planning phase, through pro-ject implementation, completion, and to monitoring the envi-ronmental measures.

GeoDesign as a concept for the integration of BIM & GIS

When geo-information is used in a design process to as-sess possible consequences of environmental changes, we speak of “GeoDesign”. For the implementation of the construction project, BIM and GIS workfl ows are united in a common workfl ow in this context. As a result, the BIM/GIS

database is available to both engineers and environmental planners through a single interface (Fig.2).

BIM (Building Information Modeling) is based on the idea of a continuous use of a digital 3D building or infrastructure model over the entire life cycle of the building, from design through planning and execution, to its operation and decommissio-ning. The BIM concept groups the main stages of modeling into fi ve supergroups (Fig.3).

The GIS planning progress is analogous to the BIM process in various steps. In addition to the planning process, a GIS data scheme is built, which can be divided into a 2D and a 3D dimension.

Fig. 3: BIM/GIS CycleSchaller et al., 2016modifi ed from Borrmann et al., 2015

Fig.4: BIM/GIS database structure

Construction Engineering in the BIM / GIS Cycle

In order to overcome the boundaries between the BIM and GIS planning and information systems that have been separated from each other, an integrated BIM/GIS cycle was developed (Fig.3).The BIM/GIS cycle illustrates the data exchange and data transfer within the integrated BIM/GIS environmental planning process. It also shows how the interdisciplinary cooperation between engineers and environ-mental planners should be carried out in order to ensure successful pro-ject planning and implementation.

The Technical Implementation of the BIM and GIS Integration

The Spatial ETL tool FME (Feature Manipulation Engine) from Esri’s part-ner Safe Software works as an interface between BIM and GIS. It can either be used as a standalone product or directly from within the Arc-GIS system through Esri´s Data Interoperability Extension. ETL (Extract, Transform, Load) describes a process in which data with different formats and structures is loaded, transformed and stored in a target system.

From the 4D BIM software AutoDesk Revit used in building design, the structure exported in industry standard format IFC is transferred to GIS using FME. The method enables the integration of the georeferenced BIM model into the 2D/3D geodatabase via GIS multipatch format (Fig.4), and thus the evaluation of impacts for each GIS layer.

With the help of this workfl ow, some application examples were imple-mented:

Assessment of Impacts and Compensation Measures

The integration of the bridge structure into the GIS database enables the estimation of environmental impacts and the re-sulting compensatory measures within the scope of a Lands-cape Management Plan (LBP).

Validation of Clearing Plan vs. Ecological GIS Data

With the help of the GIS and BIM integration, the clearing deadlines from the BIM construction schedule can be che-cked against the ecological data in the GIS database. This allows architects, engineers and planners to identify possible confl icts at an early stage in the planning phase.