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quality assurance/ quality control for scan to bim projects
Scan to BIM

Quality Assurance / Quality Control process for Scan to BIM projects

December 16, 20200

The quality of a Scan to BIM model is one of the most important factors when you choose a BIM services provider. There are no standards to stick to, nor any tools that automate this task. However, at ViBIM, we always prioritize quality over everything. Thus, we build effective Quality Assurance / Quality Control (QA/QC) process for every Scan to BIM project.

The article aims to offer you a general understanding of the QA/QC process. Besides, we want to share how we conduct the QA/QC process for Scan to BIM projects. Hope that it aids you to control the quality of a BIM model created from point cloud data better. Let’s keep reading to find out more information.

1. Why is Quality Assurance / Quality Control (QA/QC) needed?

The process of creating a 3D BIM model involves several steps. At each one, there is more likely to appear inadvertent errors. These errors can impact the accuracy of the final model. It’s why we need to conduct the Quality assurance / Quality control (QA/QC) process. It ensures that you get a high-quality BIM model. By undertaking the QA/QC process, you can

  • Eliminate errors, clash issues in the process of modeling;
  • Assure to follow the standards while creating BIM models;
  • Ensure enough geometric elements, the correct position, functionality;
  • Make sure that a BIM model meets the client’s accurate requirements;

2. What is the QA/QC process for Scan to BIM projects?

Quality Assurance (QA) and Quality Control (QC) are two concepts that are often used parallelly. Although they are the same, there are distinct differences between the two concepts.

Quality Assurance (QA) shows you how a BIM model is created from laser-scanned point cloud data. In other words, the QA identifies standards or methods that need to be followed to meet the client’s requirements. The QA is often used to monitor and verify how you are doing is right.

If the QA is a process to create the deliverables, Quality Control (QC) is the process to verify those deliverables. The purpose of the QC process is to identify and fix errors, clash issues between building trades. The QC process makes sure the results of what you’ve done are what your client expected.

In general, the two terms are related to each other but they are different in the purpose. The QA process focuses on preventing errors whereas the QC process aims to determine and address the errors.

3. How does Quality Assurance / Quality Control (QA/QC) work?

The QA/QC is one of the indispensable parts of our Point Cloud to BIM projects. The QA/QC process is always conducted during the modeling process and before delivering the final BIM models to the clients. We define specific QA/QC processes for both Architectural and MEP disciplines. Let’s get into the juicy details.

QA/QC process for Architectural building system

The QA/QC process for the Architectural building system currently involves key three checks. It includes the quality checking by Naviswork, Revit, and the final step after detaching the file. Checking by Naviswork ensures that the BIM models are enough building elements, in the correct location, and don’t have any clash issues. Besides, checking by Revit makes sure that the BIM models are the correct structure and functionality.

Quality assurance/ quality control for architecture

The QA/QC process will begin once after having already finished the process of modeling. The QA/QC specialist can undertake two processes (Revit, Naviswork) parallel to each other before moving to the final checking step. After having already completed the QA/QC process, we export the file and create a QA/QC checklist to send the client for confirmation.

Curious about the Quality Assurance / Quality Control for Scan to BIM projects?

Our QA/QC specialist is here to help you understand better the QA/QC process for the Architectural and MEP system.



QA/QC process for MEP building system

Like the Architectural discipline, the MEP system has also its own QA/QC process. This involves two main reviews including geometry checking and structural checking. The process assures that the BIM models are enough geometry elements, the correct structure, connection, and don’t have any clashes. The software for the QA/QC process includes Revit and Naviswork. Also, the QA/QC specialist will conduct the final checking step to get a quality BIM model before delivering it to the client. Let’s take a look at our QA/QC process as described below.

quality assurance/ quality control for mep

In Conclusion

Quality is a crucial part of any Scan to BIM project you need to focus on. The QA/QC process ensures that you get a clean, ready-to-use BIM model. If you have any concerns about our QA/QC process, feel free to let us know. Our BIM consultant is here to aid you to answer any questions until you get what you need.

ViBIM is a global provider of Building Information Modeling (BIM) services. We’ve had more than 5 years of experience and expertise in Scan to BIM services, 3D BIM coordination, BIM design, and Dynamo BIM services for clients in the UK, US.

Contact us today to get a quotation for your Scan to BIM projects

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level of detail
Scan to BIM

LOD Querying Checklist – A great assistant for BIM projects

December 9, 20200

Level of Detail (LOD) is not a new term for anyone who has been involving in BIM projects. But it is obvious that there is still a different grasp between the parties in each project. In the previous blog post, LOD and LOI, and everything you need to know about, we help you clarify different types of Level of Detail (LOD) and its benefits

This article provides you with another aspect of this topic. It gives you an overview of distinct differences between the two terms Level of Detail and Level of Development. Besides, you can also know better about different LOD throughout our BIM projects. Finally, there will be an introduction to the Level of Detail (LOD) querying checklist. It is an assistant to determine clients’ requirements before commencement.

1. Level of Detail vs. Level of Development

LOD is sometimes referred to as Level of Detail and Level of Development. In this article, we use LOD to refer to the “Level of Detail”. There are important differences between the two terms. Let’s dig into two terms below:

Level of Detail

The term “Level of Detail” (LOD) demonstrates the degree to which the element model is detailed and specific. It measures the amount of information provided, increases from a symbolic model to an actual model. For example, modeling the steel framing columns:

  • LOD 100: You can model a basic shape like a “box”;
  • LOD 200: Known as a generic model with approximate size, shape, position. You can also add non-graphic information to the model element;
  • LOD 300: As a specific object with accurate size, shape, position, the orientation of main vertical structural elements. You can also add non-graphic information to the model elements like steel materials;
  • LOD 350: As an actual model including base plates, gusset plates, shape, position, and interfaces with other building systems;
  • LOD 400: Including detailing, fabrication, assembly, and installation information. You can also add non-graphic information to the model element;

Level of Development

The term “Level of Development” illustrates the development of the BIM model from the conceptual design stage to the completion of construction. The LOD allows professionals to develop reliable models at different stages of the project lifecycle. Various LOD specifications have been proposed and adopted in the industry. A typical LOD specification includes five levels:

  • LOD 100: Conceptual design. The model can be used to perform whole building types of analysis (volume, building orientation, cost per square foot, etc.);
  • LOD 200: Schematic design or design development. The model helps users analyze the systems by application of generalized performance criteria;
  • LOD 300: Construction documents and shop drawings. The model is suitable for analysis and simulation for detailed elements and systems;
  • LOD 400: Fabrication and assembly. As normal, trade contractor or fabricator uses the model;
  • LOD 500: As-built model. The model is suitable for the maintenance and operations of the facility;

Source: https://www.aia.org/

In short, the two terms are used in the development of BIM models. They show the same model development process but from different perspectives. Level of Detail refers to the geometry of the element while Level of Development refers to both the geometry and the other information. For instance, the application of the model, type of information derived from each level. Architects, engineers, and others can use LOD to clearly communicate with each other without debates.

2. Understanding LOD throughout the BIM projects

Scan to BIM project for Office Building with LOD 300

The project consisted of the Revit modeling for a 9-story office building with LOD 300. We modeled all architectural, structural, and MEP elements i.e. facade, ceiling, framing, duct, pipe, conduit above ½ inches.

Point cloud to BIM services

 

3D BIM Coordination Project for Hospital Building with LOD 300

The hospital project included Revit modeling, MEP coordination of the kitchen area. We later exported shop drawings of the plumbing system for the client as well. Besides, we involved in 360 simulations of the patient room, operating room, and hall. All models were created with LOD 300.

federated model - 3D BIM coordination

 

Scan to BIM project for Laboratory with LOD 300 and 350

The scope of the project comprised Revit modeling of interior Architectural and MEP systems. All models required LOD 300. Strikingly, we needed to model the medical dryer with LOD 350. The pipe system had to be properly named and classified with the label on the pipes.

Point cloud to BIM services

 

Scan to BIM project for Administrative Building with LOD 400

The administrative building project included Revit modeling for Architecture, Structure, and MEP. Besides, our team was responsible for making annotations of plans. Include floor materials, door tags, key plans, drawings, elevation materials. All models required LOD 4 in the UK standard. It’s also the highest quality in the UK.

Scan to BIM for Administrative Building in the UK

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3. LOD Querying Checklist – An assistant to clarify clients’ requirements

Knowing the right clients’ requirements is important. Let’s imagine that your client has asked you to develop a BIM model with “Level of Detail (LOD) 350”. You and your client all know about the concept of LOD 350. But it is still can not ensure that both you and your client are getting the same understanding.

Thus, it’s necessary to clarify the LOD requirements with clients before modeling. Besides, a BIM project can have various LOD needs depending on each area or position. By using the LOD querying checklist, the modeler will define the required LOD of each building element. The client can confirm or feedback on what the modeler provides. In this way, you can avoid confusion or debates between the client and the modeler. The following is an example of a LOD Querying Checklist we’ve used in Scan to BIM projects.

 

level of detail (LOD) querying checklist

When every requirement is clearly defined, the process of modeling gets started. In the process of modeling, the modeler uses the 3D view, the section to review LOD, and use Schedule to analyze LOI requirements.

Final thoughts

Obviously, understanding the required LOD is important in each BIM projects. Using LOD, designers and engineers can work with other stakeholders about the usability and limitations of a model. As an industry standard, the LOD is mostly utilized as an efficient and collaborative communication tool.

ViBIM is a global provider of Building Information Modeling (BIM) services. We’ve had more than 5 years of experience and expertise in Scan to BIM services, 3D BIM coordination, BIM design, and Dynamo BIM services for clients in the UK, US.

Contact us today for further help with implementing your BIM projects

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Scan to BIM in the design and construction phase
BIM for Engineers, Scan to BIM

Differences between Scan to BIM for the design and construction phase

December 2, 20200

Scan to BIM improves the process of new construction projects or renovations in several ways. It adds value in every aspect throughout the building’s lifecycle. It helps users save time and cost thanks to well-informed decision-making.

The BIM models created from the Scan to BIM process have been applied for various purposes according to different project phases (i.e, design, construction, operation, and management). Knowing the intended applications of BIM models will enable you to identify the right information requirements in the models.

That’s why we’ve put together this article for you on the differences between how the Scan to BIM is applied for the design phase and the construction phase. With extensive experience in creating 3D BIM models, we will have suggestions for you on 3D BIM models that are suitable for the intended applications.

But before jumping into BIM models, let’s get started with how the Scan to BIM can be beneficial at each project phase below.

1. How Scan to BIM benefits the design phase

Let’s say you are hired for a project at School. Your clients need to gather documentation on the existing construction conditions. This information is later used to design the building that meets the site conditions. What’s happened if BIM models were created on outdated or fragmented information. It is more likely to waste you much time, even then, trigger significant consequences for all users. So as for this type of situation, the Scan to BIM is a good choice.

The information from the Scan to BIM process is highly accurate and detailed. It enables designers to be aware of the existing site conditions better to make an optimal building design. For instance, a renovation project in the UK applied the Scan to BIM to create reliable and accurate data. All models required LOD 4 in the UK standard.

Scan to BIM for Administrative Building in the UK

Not only the design phase but the Scan to BIM also continue adding values to the rest phase of the project lifecycle. It plays a more and more vital role in every aspect of the construction project. What’s more, it improves communication with the rest of the project team to ensure well-informed decision making. Keep reading the following section to discover the Scan to BIM uses in the construction phase.

2. How Scan to BIM benefits the construction phase

In the construction phase, the Scan to BIM has been adopted for various purposes. Especially, it can help to solve time-consuming and arduous tasks. For instance, you need to collect data to review the actual project progress. To get the job done, you are more likely to have to visit on-site construction to take measurements. This requires careful planning on when you visit the site, the amount of time you’re allowed to spend there, the number of personnel needed for the task.

All this costs your time, resources, and budget. But, by using the Scan to BIM, you can spend fewer efforts on these tasks. Some use-case scenarios of the Scan to BIM in the construction phase include:

  • Quality assessment/ quality control (QA/QC);
  • Early problem detection;
  • Progress tracking on a project;
  • Virtual environments for installation and assembly;

We’ve already analyzed in detail these applications in the previous article How Scan to BIM is used in the construction phase. Now hope that you can know the different applications of the Scan to BIM in each project phase. The next step is that you need to identify the information requirements of the BIM models.

Bonus: How Scan to BIM is used in the construction phase

3. Differences of required information in BIM models

The different uses of the Scan to BIM require different information in the BIM models. Thus, it is essential to identify all the requirements for the intended BIM models before getting started with the process of Scan to BIM. This enables you to avoid collecting too much information or insufficient information that impacts the quality of the BIM models.

So what requirements do you need to determine? There are three aspects we need to identify including:

  • Required building elements: Refers to the building elements that should be modeled in BIM models. For instance, stair, exterior windows, exterior walls
  • Required level of detail (LOD): Lets you know the degree to which the building element is detailed. Five popular levels include LOD 100, LOD 200, LOD 300, LOD 400, LOD 500;
  • Required non-geometric attributes: Refers to some properties such as materials, colors of the building elements;

As mentioned above, the Scan to BIM application is different between the design and construction phases. So what information are BIM models included for these phases?

3D BIM models for the design phase

According to the NBS report, 71% of designers expect that manufacturers should create fully-functional parameterized 3D BIM objects. In other words, 3D BIM models for the design phase include two key factors:

  • The functionality of 3D BIM objects. For instance, assigning internal or external function to BIM objects, adding tolerance of all warped objects, etc;
  • Valuable and rich information. Some information includes size parameter, materials, naming conventions, etc;

The BIM models can need high LOD specification such as LOD 300, LOD 400. Creating parametric 3D models makes reviewing become quick, accurate, and intuitive. Also, it gives designers the flexibility to respond to on-going design challenges.

Functional model - Scan to BIM services

Bonus: It’s time to convey design intent value for Scan to BIM projects

Looking for a Scan to BIM provider for construction projects?

Our BIM consultant is happy to help you with any question. Just share with us your requirements, we’ll work with you to analyze the project and give you a budgetary quotation.



3D BIM models for the construction phase

Yet, there will be a little bit of difference in BIM models for the construction phase. Unlike architects, some contractors use 3D BIM models to track the project progress or clash detection. Thus, the BIM Models generated from the Scan to BIM process may be less detailed. The BIM models for this type of application can be within LOD 200-300. They expect BIM models include some factors that help them group clashes or search components

BIM coordination - clash detection

Wrapping up

We hope that the article clarifies the different uses of the Scan to BIM in each project phase. Besides, you can also know the required information in BIM models for the intended use. Therefrom, you are able to add values to BIM models for your clients at any phase of the project lifecycle.

If you are looking for a Scan to BIM provider that enables you to create BIM models for intended applications, don’t hesitate to let us know. We are 100% confident to help you reach your goals. Our BIM consultants will work with you to analyze the project and give you an optimal solution with a budgetary quotation.

Contact ViBIM today for a free consultation and demonstration.

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Scan to BIM in construction phase
BIM for Engineers, Scan to BIM

How Scan to BIM is used in the construction phase

November 27, 20200

As many construction projects have adopted BIM technology, we witness a natural surge of Scan to BIM. The Scan to BIM refers to the use of 3D laser scanning to capture existing conditions of buildings as point cloud data and the creation of BIM models from these data. In construction projects, the Scan to BIM brings benefits to each and every project phase such as design, construction, operation, and management phase. However, each phase has different requirements depending on the purpose of use.

In this article, we will shed some light on how Scan to BIM is applied in the construction phase. This might point out some great ideas that help you improve your Scan to BIM projects. Let’s keep reading on it to get more information.

1. The purpose of Scan to BIM in the construction phase

To get the most out of Scan to BIM models, you need to identify the purpose of using the models first. When understanding clearly how Scan to BIM models will be applied, you will determine the right approach. Let’s take a look at some following use-case scenarios of Scan to BIM in the construction phase.

Quality assessment/ quality control (QA/QC)

One of the popular applications of Scan to BIM in the construction phase is for quality assessment/quality control (QA/QC). The 3D models created from Scan to BIM process are often compared to the previously designed 3D BIM models to identify any discrepancy between them. Also, these 3D models are used to determine the tolerance values specified in the requirements when modeling.

Early problem detection

Let’s imagine you’re hired for a project at a Hospital. The Scan to BIM process allows you to create a 3D BIM model to present to the project team. The model pointed out to all of your project team more than 10 conflicts where the pipework running through a steel beam. With a clear picture of the problem, stakeholders will know what they should do to make a constructible model. For example, the design team will need to make the change and quickly approve a change order. More importantly, the project team avoids costing more money than planned to solve these issues if they weren’t detected before the build.

 

Scan to BIM construction phase - clash detection

Monitor progress on a project

Progress tracking is a vital part of the construction phase to assure the project’s progress. The Scan to BIM will be a good choice for this. By scanning the on-site construction works and create 3D BIM models, you might compare them with the designed BIM models to review the project schedule. As a result, you are able to see the actual progress in comparison with the plan and know exactly what the construction works need to be completed.

Create virtual environments for installation

Several contractors utilize the Scan to BIM to simulate the installation and assemblies in virtual conditions. In this way, contractors can recognize any potential problem such as clashes between the components to solve them before creating the actual installation. In this way, the Scan to BIM helps contractors save construction time and costs thanks to early problem identification for installation and assembly.

Generally speaking, use-case scenarios for Scan to BIM in the construction phase is diverse. It can be used for both new constructions and renovations and the purpose is flexible depending on the requirements of each project. With understanding the purpose of Scan to BIM, now you can identify the right laser scanning solutions and create suitable deliverables.

Looking for a Scan to BIM provider for construction projects?

Our BIM consultant is happy to help you with any question. Just share with us your requirements, we’ll work with you to analyze the project and give you a budgetary quotation.



2. Think about purpose-built BIM models

Now it’s time to determine the necessary point cloud data and BIM modeling process. This enables you to create BIM models with the right and sufficient data. In general, we see that the deliverables are varied depending on the requirements of each project. However, to create BIM models that meet the right client requirements, you should create a querying checklist to clarify any concerns like LOD or LOI requirements between you and your clients.

 

BIM outsourcing services

 

For instance, some contractors will need a BIM model for clash detection so the final BIM model may be less detailed than the BIM models created for the design phase. They can expect the BIM models contain factors like name conventions that help them group clashes or search components with ease. If you are not aware of your client’s expectations, don’t worry, the best way is frankly to talk to them to know more. By understanding the client requirements, you can optimize the implementation time of the project but still creating the deliverables meeting their expectations.

 

Scan to BIM in construction - BIM model

3. Self-do it all or outsourcing?

The Scan to BIM includes the process of capturing existing conditions as point cloud data and the creation of BIM models from these scanned data. So there are several ways to optimize the Scan to BIM process for the construction project.

If you are a 3D laser scanning company and hired for a project at school, of course, you can self-perform laser scanning processes and even create BIM models from point cloud data. However, you are completely able to optimize cost for the Scan to BIM project by choosing to outsource a part of the work and focus only on your strengths.

Partnering with a service provider, for example, specializing in BIM modeling from point cloud data may be a good choice. It provides more flexibility to solve varied works, approaching professionals with expertise in each area.

Bonus: Best BIM outsourcing services providers 2020

Competition in Scan to BIM services is increasing. This creates both challenges and opportunities for firms. So it’s necessary to differentiate yourself from competitors, find the best ways to optimize your cost and improve the quality of services. In this way, you can enhance the competitiveness in the market. We are on the journey to help you reach this goal. It’s why we provide high-quality BIM services that are tailored to your specific needs and affordable.

Looking for a reliable Scan to BIM partner?

If you are looking for a way to increase competitive edges and win more projects, take a few minutes to learn more about our BIM services. We specialize in Scan to BIM services for projects in both the design and construction phases. You can also find out more about our BIM services through the projects we’ve delivered to clients in the US, UK, Australia, and more.

In case you want to talk to our Scan to BIM experts, feel free to let us know. Our BIM consultants are happy to have a meeting with you and help you reach your goals.

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LOD and LOI requirement
BIM for Architects, Scan to BIM

LOD and LOI and Everything You Need to Know

July 20, 20200

Are you currently working on a Scan to BIM project? Has your client asked you to produce a BIM model to ‘LOD 400’ or a specific Level of Information? If you don’t understand them thoroughly, then you may create the wrong model compared with the client’s requirements. So it’s necessary to understand the LOD and LOI requirements.

So what it really means and how do we meet all LOD and LOI requirements? Read on to find the answers or ask our BIM consultant to help you.

1. What are BIM LOD and other acronyms

In reality, there are several acronyms that sometimes can be difficult to understand or remember. LOD, LOI…what do they all mean? Before we even attempt to explain the difference between them and what they mean, we need to know what they stand for:

  • LOD: Level of Detail, demonstrates the graphical content of models
  • LOI: Level of Information, demonstrates the non-graphical content of models

As you know LOD 100, LOD 200, or LOD 300 are inputs based on geometry. LOD 400 can be achieved in the model from visual observations on the sitemap. The following examples will help you easily understand the difference between LOD and LOI.

LOD 1 – A Mass Model

The LOD 1 will be a Mass Model of the building, place, or structure. It will not contain doors or windows. This type of model is mainly the surface model.

ViBIM LOD 1

LOD 2 – Shell and Core Model

The LOD2 model will include main structural elements and the penetrations of the building such as floor panels, columns, beams, and basic structures of doors, windows.

ViBIM LOD 2

LOD 3 – Standard Survey Model

The LOD 3 model also consists of main Architectural details. The basic family can be created for doors and windows. Besides, the main objects can be modeled in the concept design. With LOD 3, the modeler also can create a simple model of the fixed furniture and accessories if required.

ViBIM LOD 3

LOD 4 – Detailed Survey Model

The LOD 4 model will contain Architectural elements and Structural details. The primary and auxiliary services can be modeled at a highly detailed level. Additional details may include baseboards, architecture, rails, and furnaces or surface.

ViBIM LOD 4

2. The benefits of accurate modeling according to LOD and LOI requirements

The level of detail is ranged from simple to complex in terms of geometry (LOD) and information (LOI).

So the 3D BIM models meeting the LOD and LOI requirements will enable you to have accurate and sufficient information on the BIM objects. This is of value to your next designing stage such as exporting drawings or extracting information from the model.

  • LOD 100 – Concept design
  • LOD 200 – Schematic design
  • LOD 300 – Detailed design
  • LOD 400 – Fabrication and assembly
  • LOD 500 – As-built model

Example 1: The wall requires LOD 1: The external walls are modeled as a block object

Example of LOD 1

Example 2: The wall requires LOD 2: The structural walls are modeled with an overall thickness.

Example of LOD 2

Example 3: The wall requires LOD 3: All walls are modeled with overall thickness.

Example of LOD 3

Example 4: The wall requires LOD 4: All walls are modeled with overall thickness and decorative details.

Example of LOD 4

The next example will help you know more about the LOD and LOI requirements of the MEP system:

  • LOD2: The modeler just needs to create the model of huge equipment as required;
  • LOD3:
    + Duct, Pipe, Cable tray will be modeled according to the fitting. For Valve, if the client requires the LOD 3, the modeler will create the model of the valve’s crank into a plane, but not include the bolts.
    + For mechanical equipment, the modeler will just need to create the model of the main structural objects, not including bolts, and small pipes. The MEP system will not include a hanger, except for being required.
  • LOD4: Create the 3D model of the MEP elements as required with a high level of detail: Duct, Pipe, Cable tray will be modeled according to the fitting. For Valve, if the client requires LOD 4, the modeler will create a detailed model of the valve’s crank and the bolts.

Example of MEP elements

3. How do we meet the LOD and LOI requirements?

For each point cloud to BIM project, we should clarify the LOD and LOI requirements from the client at the beginning stage of the project. Not just stop at the model level, you need to clearly understand the LOD and LOI requirements of each object.

In the process of modeling, the modeler might use the 3D view, the section to check LOD, and use Schedule to analyze LOI requirements. Besides, the modeler themselves should improve their knowledge and stay updated with the information on LOD and LOI.

LOD requirement

A BIM project can have various LOD and LOI requirements that are applied to each area or position. So it’s necessary for the modeler to understand them to model exactly.

In conclusion

The terms have been devised as a means to help communication within a BIM project run more smoothly. So it’s important to understand and meet the exact LOD and LOI requirements. Hopefully, you’ll have a better understanding of what this means. If you still have questions on the topic, don’t hesitate to get in touch with us.

At ViBIM, we specialize in the delivery of BIM services and are confident to help you bring more value to your projects.

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Scan to BIM - best practices
BIM news and trends, Scan to BIM

Best Practices for effective Scan to BIM process

July 3, 20200

We all know that the Scan to BIM process can provide a good starting point for the next stages. When done right, the design team can use Scan to BIM models to process their design; building owners might utilize them to effectively manage future changes or renovations. It might be said that they are beneficial to all stakeholders throughout the lifecycle of a project. So this post will walk you through a number of best practices we’ve learned to make efficient Scan to BIM.

1. Identify the purpose of the Scan to BIM model

It’s necessary to identify what the intention of making a Scan to BIM model is. Reflect existing structures of a building? Provide the model for the design process? Or coordinate the MEP trades? What stage of the project the model will be used.

  • For the design process: Quite a few design teams are using Scan to BIM model to kick off and manage the process early. So if you want to assist the design stage, later sufficient information and functional 3D BIM models should be created;
  • For the construction stage: If this is the case, ask whether you need to create a 3D model for trade coordination. The model can be shared between stakeholders to know the exact intricate they can encounter;
  • For retrofit projects: Create an as-built model that reflects the exact existing conditions of a building with a very high level of detail.

Knowing the exact who the end-user of the Scan to BIM is will help optimize the model for usability.

2. Define the project scope

It’s extremely vital to be aware of the project’s scope before getting started implementing the project. You can create a checklist to help the client easily identify the scope of work. In this way, they will appreciate your consultancy and give you a chance to show your expertise. Also, the following questions help you dig deeper into their project:

  • What exactly is to be modeled?
  • What’s the Level of Detail (LOD) and Level of Information (LOI) required for the model?
  • How will the model be used for the project?
  • What’s the project schedule?

BIM outsourcing services

Identifying the exact project scope will help to create an accurate 3D model that meets your client’s specifications. Besides, providing a clear definition of the scope can bring opportunities and value at all stages of the project.

3. Determine the required deliverables

As mentioned above, the result of the Scan to BIM process can be used for various different purposes. So you have to identify the deliverables you want to meet your customer’s expectations. It might be the Architectural, Structural, and MEP Revit file of a specific Level of Detail (LOD) and Level of Information (LOI). In some cases, the client may require some of the different formats of the file. The deliverable can even provide added value to the end-user.

Point cloud to BIM services

4. Collect more data than you need

Once you understand the project scope, the deliverables required; it’s important to collect all the needed information. It’s much easier to collect that additional information while you’re there the first time. You can delete data if it’s redundant than go back to collect the missing information. Remember the motto “more is more”.

Scan to BIM - point cloud

5. Find an experienced Scan to BIM team

Partner with a team that understands BIM technology, the industry standards, and methods of the construction process can assure successful results. They should be able to give you a suitable solution for your goals. The team should have extensive knowledge and experience in executing the Scan to BIM projects for various countries such as the US, UK. This enables you to maximize value and minimize costs.

In conclusion

Scan to BIM is a key component of the BIM process so it’s essential to create high-quality BIM models that are of value to the next project stages. Stakeholders of a project – surveyors, project managers, building teams, engineers, and designers, and architects – can confidently collaborate and benefit from Scan to BIM.

If you’re interested in this topic and want to discover more, don’t hesitate to get in touch with us. We are ready to help you bring more value to your Scan to BIM projects.

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Functional model
Scan to BIM

Create a functional 3D BIM model for Scan to BIM project

June 25, 20200

As we know Building Information Modeling (BIM) is a digital 3D description of every aspect of a facility. It might consist of the physical and functional characteristics of the built asset. Nowadays, there are more and more stakeholders involve in a BIM project and work on the 3D model created. So creating functional BIM models become more vital in any Scan to BIM project. At ViBIM, we always assure that all BIM objects in the model have assigned with the correct function.

If you’re curious about this, the article is for you. We will help you clarify how we create the functional BIM models for the client’s Scan to BIM projects.

1. Why do you need the functional BIM model in the Scan to BIM project?

Several people think that the as-built models just should focus on reflecting exactly existing building conditions. However, we realize that adding the functionality to BIM models is really necessary. This is also one of the important parts that will benefit your BIM project now and many years to come.

In the process of modeling, adding parameters to all objects will help you categorize the internal and external functions of the object. Besides, thanks to automatically filtering parameters filtering of 3D view, the process of reviewing becomes quick, accurate, and intuitive. The objects with the correct functions will be of use to your design process and extracting the schedule of the objects becomes easier.

– The walls are assigned with functions “exterior or interior”:

functional wall model
– The floors are assigned with functions “exterior or interior”:

functional floor model
You can observe 3D-FUNCTIONS to see the corresponding color for the internal and external functions of the object in the project. This is an example of a wall that is assigned to the right functions.

functional wall model
On the other hand, this wall is assigned the wrong function.

functional wall model
The floor is modeled and assigned the correct function.

functional floor model

2. How BIM objects have assigned with the right function

2.1. Assign the right function (internal, external) to walls, floors, and stairs.

A functional BIM model will explain how the operations in the object model and the frame of the object are achieved. It focuses on the representation of the algorithmic or computational elements of the model. In the process of modeling, the modeler will assign functionality to the objects. So when opening the view “QA-3D-FUNCTIONS”, you might see that each object have their own functions (internal or external) that will be shown with the corresponding color.

Let’s see the following example for a better understanding. In our example, the blue symbolizes the internal functions of the object while green represents the external one. As can be seen in the image below, the wall object is assigned the function “interior”.

functional BIM models

2.2. All model data is modeled to an agreed tolerance

For renovation or retrofit projects, it is inevitable that some areas are out of shape. So in the process of creating as-built models, it’s necessary to consider the BIM deviation of all warped objects from the horizontal or vertical plane. Adding tolerance to the distorted, broken walls, floors helps you know exactly how the current status of this project is.
The deviation for each object is categorized against the one the following tolerance levels:

  • Blue represents the tolerance 0<x<15mm
  • Yellow represents the tolerance 15<x<30mm
  • Read represents the tolerance x>30mm

functional BIM model

There are several options for adding tolerance:

  • Assumed: Define the components in the model are assumed. This means that the survey data does not allow you to determine the shape/ size/ position and the exact existence of the element. We recommend these factors to need to be considered throughout the image and/ or the scanning data provided.
  • No level constraint: Define the components in the model has no reference attribute at the fixed level in Revit.
  • Damaged / Irregular: Identify the components in the model are significantly damaged and/or irregular in their shape. This leads to not model exactly in Revit.

Adding the tolerance to the objects also benefits your designing process and schedule of the object in the model. Especially, thanks to categorizing the tolerance level by color, we can observe quickly the status of the project throughout 3D DEVITATIONS.

In conclusion

We believe it’s necessary to create the functional 3D BIM model in the Scan to BIM project. If your model meets these criteria, it will be of benefit to your next project stages. In case, you want to discover more about the topic, don’t hesitate to get in touch with us.

At ViBIM, we specialize in the delivery of Scan to BIM services and are ready to help you bring more value to your projects. Let us know if we can help you with your BIM projects.

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Join all walls into a chain in Scan to BIM project
Scan to BIM

Join all walls in a continuous chain in Scan to BIM process

June 5, 20200

1. What can be understood?

Regarding walls, there will be lots of intersections where multiple walls connect together. So one of the important criteria we always follow is all walls shall be cleanly joined in a continuous chain and detached from top to bottom. At the position of numerous wall intersections, the modeler will create a continuous chain of thin walls around the intersection.

scan to BIM services -walls2. Why is this important?

In the Scan to BIM project, there are almost intersections and these areas need to be joined properly to create a clean model. This helps to avoid conflicts and clashes between walls in the model. What’s more, the joining of all walls will make the plan and the section become neater and more seamless. Creating a clean model makes the design process become easier and more efficient.

3. How does the right joined wall look like?

The section view below indicates the status of the walls when they are not joined. There will be overlap between the intersections and not be consistent.

Scan to BIM projects- walls don't be joinedOn the other hand, the walls that are joined will become seamless at the intersected points.

Scan to BIM projects - wall joinedThe following plan view demonstrates the status of the walls when they are not joined together.

Scan to BIM project - plan join walls
However, the model will become cleaner when the walls are joined together
Scan to BIM projects - walls joined

A note for the modeler is that:

  • Every time a wall is created in a Scan to BIM project, it’s necessary to analyze the cohesion of that object in the project;
  • Check objects regularly when using the sections and plans through points that have great complexity in the project model.

In conclusion

This is one of the most important criteria to create a clean 3D BIM model. At ViBIM, we always assure the deliverables meet this requirement in each Scan to BIM project. We believe if you do start to use these standards it will be fantastic for your BIM projects. If you’re interested in the topic, feel free to contact us to know it in detail.

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can to BIM process: Check Doors and Its Details Before Modeling
BIM for Architects, Scan to BIM

Check Doors and Its Details Before Modeling in Scan to BIM process

June 3, 20200

1. What can be understood?

Understanding the client’s requirement is extremely important in the Scan to BIM project. So before getting started modeling, the modeler needs to assure that they clearly understand the technical requirements of each object in the model. For example, you’ve been asked to model doors by the client, then you must identify what LOD and LOI requirement is. If the project require high details, you can need to check what type of doors it is, determine door swing directions, and its details such as 3D linework, ironmongery, etc.

In the scope of this article, we assume that the model of the door is required with the LOD 300 and LOD 400. Later, in the process of creating a 3D BIM model, the modeler might use a 3D view or the plan to verify door swing directions.

  • The following example demonstrates using the plan view to check the door swing door

scan to BIM services - swing door

  • By comparison, we can also use the 3D view to check this:

scan to BIM services - swing door 3D view

2. Why is this important?

Knowing the exact requirements of doors will help us accurately model the status of the object. Besides, this also helps you meet the client’s requirements in terms of clearly showing the types of doors in the building and the door swing directions of the different door types. From that, you create an accurate 3D BIM model that is a vital starting point for the next design process.

Let’s take a look at the following image for better understanding:

scan to BIM services - detailed door

3. When should we perform this?

As mentioned, the model of the door will vary on the LOD and LOI requirements of the project. So any Scan to BIM project, you also should clearly understand the LOD and LOI requirements before modeling because they will impact on the final deliverables.

  • The door with LOD 100 and LOD 200 will include an opening pit only, not show the door swing direction.

scan to BIM services - door with lod 2

  • The door with LOD 300 will include the door swing direction, but not show the details of ironmongery.
  • The door with LOD 400 will include both the door swing direction and the details of ironmongery.

scan to BIM services - Door with LOD 3

Based on 3D TrueView, the point cloud data, the image to check the door swing direction as accurately as possible. As a result, if the project requires LOD 300 and LOD 400, you need to verify the door swing direction. Also, the project requires LOD 400, the modeler needs to detail 3D linework, ironmongery, and etc.

scan to BIM services - LOD 4
scan to BIM services - LOD 4

In conclusion

At ViBIM, we specialize in the delivery of Scan to BIM services and are ready to help you bring more value to your projects. If you want to discover more about the topic, don’t hesitate to get in touch with us. Our BIM experts are always here to help you answer any question until you get what you need.

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