Cost estimation in construction using 5D BIM modeling

Cost estimation in construction using 5D BIM modeling


The BIM model that contains objects and assemblies to add cost dimension to it is called 5D BIM. The cost data is incorporated within the BIM model objects themselves or it is linked to estimating software tools. Thus 5D BIM modeling helps create a relationship between elements and include the properties and specification of each element and object. So, we can extract comprehensive and accurate information from the model used for costing.

A collaborative effort of people is required to get the maximum effect from the models. So, the main aim of 5D BIM is to enhance collaboration on projects. It also facilitates the management of the project overall. But, the designers have to generate appropriate 3D information and the construction team should check for clashes to become the 5D model effective.  As 5D software is able to check clash detection, it can encourage a collaborative atmosphere throughout the project. BIM, through the use of a centralized model, enables automatic updating of the design changes and coordination among the project team.

Some benefits of 5D BIM cost modeling:

  • 5D BIM Modeling can increase the visualization of projects such as construction details.
  • It helps the people to work together to make the models effective and thus enhance the collaboration on projects.
  • 5D BIM improves the quality level of the finished projects because the users maintain the quality of data in BIM models.
  • As the costing of design options can be done during early design stage with the help of 3D and so 5D BIM modeling makes project conceptualization easier.
  • Using 5D software, design details can be pointed out with more clarity and it facilitates the analysis capability of the model.
  • 5D ensures more take-offers during the stage of budget estimate.
  • Its efficiency to generate quantities for cost planning is higher than the traditional software and manual take off during the detailed cost plan stage.
  • As it helps identify potential risks at earlier stage, team can improve clash detection in design stage itself than traditional approaches can.
  • It increases ability to resolve RFI’s in real time.
  • As 5D BIM is able to model project options before and during construction, it improves estimating. reference bimforum know more then contact us.

Aecom and BIM Academy team to create BIM/FM system for Sydney Opera House

Sydney Opera House has appointed Aecom, Newcastle-based consultant BIM Academy and London-based software house EcoDomus to deliver a technical solution that will link retrospective BIM models, FM systems and building management control systems at the global landmark.

The project will result in a cloud-based 3D graphical interface that maps both the physical and functional characteristics of Australia’s most famous building.

The trio won the project following a tender process, which itself was informed by earlier consultancy work by BIM Academy in 2013 for the Opera House.

Speaking to BIM+, BIM Academy managing director Peter Barker said: “The Opera House has a number of systems to manage the facility, using different software, and database formats. The idea is to provide a fully-integrated FM system hosted around a 3D model.

“It is an ambitious programme to take on but New South Wales [which owns the Opera House] wants to be seen as leaders in innovation.”

He also anticipated that that the approach adopted by the Opera House could be taken up by more clients and property owners in the future. “We’re seeing interest from UK estate owners in this kind of approach, for instance from universities. Often they have disparate management systems, operating in silos. So we expect we’ll see more clients investing in upfront strategic consultancy so that they can understand their needs.”

The new BIM interface will link a number of current Opera House databases

In Sydney, the new BIM interface will provide a single source of information for building maintenance and operational requirements during the opera house’s “Decade of Renewal”, as well as ongoing new works and projects at the site.

In a press release, Sydney Opera House director of building Greg McTaggart commented: “As we embark on the first stage of Opera House Renewal, it is critical that we have the technical infrastructure in place to effectively manage the pipeline of upcoming development projects, as well as to support the ongoing management and conservation of this architectural masterpiece.

“After initially assessing the market it quickly became clear there was no single BIM solution that could be applied to both development and construction projects as well as ongoing facilities management of the Opera House. We identified a gap in the industry and decided to tender for a bespoke, user-friendly solution.”

“The Opera House is truly unique so it’s exciting that we have the opportunity to develop bespoke, leading-edge building technologies that not only meet our specific needs but also those of the wider industry itself.”

The solution put forward by the Aecom-led consortium uses cloud-based technology, allowing staff to access it using mobile devices while working on site. External consultants will also be able to access the system when working on projects.

The new BIM interface will link a number of current Opera House databases including a technical documents database, maintenance software, a comprehensive rooms database and the TRIM document management system.

It will also draw on laser scanning data captured two years ago for the Opera House’s 40th Anniversary by The Scottish Ten, an international 3D scanning project.

The first phase of the 18-month project will involve retrieving and linking information from existing and new databases via the 3D model, while the second will introduce a broader range of functional modules that can be added to the BIM interface over time.

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Revealed: Dubai Municipality’s Updated BIM Mandate

Circular (207) is titled ‘Regarding the expansion of applying the (BIM) on buildings and facilities in the emirate of Dubai‘, and has been referenced 812/02/02/1/1509774.

The circular is dated 23 July, 2015, states Dubai Municipality’s intent to “expand the usage of it (BIM)”.

According to the circular, Dubai Municipality’s BIM mandate from 2013, issued through circular (196), has been succeeded by circular (207), as part of the civil body’s efforts “to follow up on the latest construction trends from all over the world, for all the benefits that come to all the parts involved in this, from project owners to consulting firms and contractors and government departments.”

BIM is being encouraged “because of how much it lowers the cost of construction projects and the time taken to finish them; and increases the level of coordination between the engineers working on designing and implementing the project, and their counterparts in the management and funding and manufacturing the project.”

Dubai Municipality’s 2013 mandate – circular (196) – pertained to the application of “the first stage of BIM in the construction and mechanical (parts) on buildings and the following facilities:

  1. Buildings that are above 40 floors.
  2. Building with area’s larger than 300 thousand square feet.
  3. Specialised buildings such as hospitals, universities, and all that is similar to that.
  4. All buildings requested on behalf of a foreign office.”

As the latest circular (207) continues, it is for those reasons, and the other benefits provided by BIM, that “it has been decided to expand the usage of it (the technology) to include the following:

First – Architectural and mechanical works for the following buildings:

  1. buildings that are above 20 floors.
  2. buildings and facilities and compounds with areas larger than 200 thousand square foot.
  3. buildings and special facilities like hospitals and universities and all that is similar to that.
  4. all governmental projects.
  5. all buildings and projects that are requested from a foreign office.”

The circular continues, adding the requirements of its previous circular, would continue to stay in effect:

“Second – For buildings and projects that were mentioned in the previous circular announcement, which is number (196) in year 2013(already mentioned above and they are):

  1. Buildings that are above 40 floors.
  2. Building with area’s larger than 300 thousand square feet.
  3. Specialised buildings such as hospitals, universities, and all that is similar to that.
  4. All buildings requested on behalf of a foreign office.

And this is starting from 1/6/2015 (1 June, 2015), and that the consulting and advisory offices are legally questionable and responsible on applying this.”

The circular, signed by Engineer Khalid Mohammed Saleh, director of buildings department at the Municipality, concludes saying the organisation is “hoping that all such offices would coordinate and work with what is mentioned above”.



bim in spain

After UK now BIM mandate in Spain by 2018

bim in spain

The national BIM strategy of Spain is launched at a meeting at Spain’s Ministry of Infrastructure this week. The compulsory BIM requirements on public sector projects are expected to include in this strategy. No firm has yet been agreed for the onset of BIM as a legal requirement. But discussions will focus on a phased mandate for various sectors with a possible beginning point of 2018.

Ana Pastor, Sapin’s minister of public works convened the meeting and he established a BIM steering committee. Representatives of public sector bodies, infrastructure owners, national ministers and private contractors and consultants are included in this committee.

As per the press release from the ministry, the purposes of this commission are the following.

»  Promotion of BIM implementation in the Spanish construction industry
»  Promotion of BIM use throughout the lifecycle of infrastructure
»  Creation of public administration awareness in establishing BIM requirements in tenders for infrastructure
»  Establishment of a timetable to adapt the rules to the widespread use of BIM
»  Development of national standards to facilitate BIM use
»  Creation of homogeneous academic training map of BIM methodology in Spain

Five task groups will be set up by the steering committee. International liaison task group is the first one among them and it’s aim is to align Spain’s work on BIM with other nearby countries in the EU. It will also establish connection with South American countries, which have cultural similarities with Spain. Dealing with strategies, technologies, people and process are the responsibilities of other four groups.

Ineco, a consultant on major transport infrastructure projects such as airports, roads, high speed rail and ports etc., is included in the meeting on Tuesday. Ineco’s Sergio Munoz Gomez, President of the Spanish chapter BuildingSmart, suggested a BIM mandate in Spain implementation date of 2018, but it is just a proposal. According to him, the most appropriate dates should be decided only after discussion. Different dates should be distinguished for residential construction, infrastructure and building depending on the maturity in various sectors.

Deputy Director in Ineco’s civil engineering department, Jorge Torrico Liz, said that the level of BIM should be defined, even though it would be similar to the British Level 2. Other interesting task is to align definitions around Europe.

Even though big construction companies have engaged in other markets in BIM, there are many small companies, who think about investing in new methodologies and it is the task of the committee to convince them.