Modeling for construction, not for drawings

Constructibility refers to ensuring in advance that a building or structure can be built efficiently, both in terms of time and money. Building Information Modeling, when detailed and accurate enough, lets the industry achieve this with information-rich, as-built models and find possible problems before starting to work on site, using or wasting real materials. As-built models minimize costly surprises, opening way for more profitable projects.

If the question is "What is BIM?", constructibility should be a part of the answer. At Tekla, constructibility is the foundation of developing BIM software. We produce our software to meet the needs of the industry, putting the “I” like information to BIM - the more information a model includes, the more beneficial it is to all project parties.

Everyday constructibility

Constructibility is a practical, everyday issue for builders. Because construction is a process, we want our software to support the whole workflow including the inevitable changes. As buildings comprise of several materials, software should be able to handle the same.

Constructible, as-built models allow the industry to make informed decisions early in the process. Tekla Structures is made for creating, combining and distributing highly detailed, accurate and information-rich structural models using any material. The data is accurate and ample as it accumulates as what is entered in the beginning of the process stays with until the end. The builders can manage changes and avoid errors, find clashes and produce better quality but less waste.

Bigger, better, cheaper, faster – now

Current trends in construction promote constructibility. Because the trend is towards increasingly complicated architecture, designers and builders have to find ever more innovative solutions, and then realize these. The need to build successfully and safely is the reason why details and information are necessary already in the design phase.

Cost pressure is ever present. Using constructible models, building can become cheaper, better and faster. Processes can be planned and scheduled and possible mishaps in the design phase detected before starting construction. This leads to less ad-hoc problem solving on site.

Off-site building is another trend that makes accurate information crucial. It is gaining ground as the industry heads towards savings and higher level of automation. Ever larger units, such as steel-roof assemblies and factory-built bathrooms, arrive prefabricated to the construction site to be installed just on time. Naturally every such item needs to fit exactly and stay in schedule while vast amounts of changing information must reach those who work on the project. This process definitely calls for accurate, as-built, up-to-date information that is easily found – sounds just like constructible models.

Georgia Tech Eastman constructability

We have seen cases where the costs have been reduced by 50 per cent by using BIM. Having constructibility issues sorted out before starting construction will inevitably lead to less errors.
Charles Eastman
professor
Georgia Tech college of Architecture