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LOD, lod or loi? This is how you deal with them

LOD, lod or loi? This is how you deal with them

18 January 2018

These terms are frequently encountered in BIM projects: level of development, level of detail and level of information. The terms have not been laid down in an act or standard, but have been devised as a means to help communication within a BIM project run more smoothly. In practice, however, it seems that the terms do, in fact, cause some confusion. To avoid any misunderstandings on the agreements that are made at the level of detail in the beginning phase of the project, it is important to understand what exactly the three terms mean.

Level of development [LOD]

The level of development comprises both the graphic representation of the family as well as the level of the information that is linked to the family. Level of development is often abbreviated to LOD and is often referred to in BIM-related documents such as the BIM protocol. The level of development is the most general term of the three and less useful for detailed agreements.

Level of detail [lod]

When we speak of the level of detail, we are only referring to the graphic representation of the family. A family with a low level of detail has, for example, a simple geometric shape such as a cube or a cylinder and will not contain any specified equipment. Unlike the level of development, the level of detail says nothing about the information that is linked to the family.

Level of information [loi]

Information plays a crucial role in an BIM project. The level of information is used to indicate the level of the information that is linked to the family. A family with an extremely high level of information comprises, for example, manufacturer-specific data sheets and a maintenance instruction.

Taking a LEAN approach to LOD

The three terms LOD, lod and loi are aids for making good agreements with the other parties in the project. Thinking beyond the level of development avoids data (graphic or informative) being added to the model that will not be used. For example, in a project that requires LOD500 (in relation to maintenance), it is quite conceivable to propose modeling the level of detail at a lower level than the level of information. It is important to describe in the BIM protocol what exactly falls under the various loi, lod and LOD levels. This makes it clear which information is really important, what is expected of each other and the collaboration can really begin.

BIM App for designing and placing Valves in Revit

BIM App for designing and placing Valves in Revit

17 January 2018

Today, we add another app for MEP engineers, the MEPcontent Product Line Placer for Valves. A great stand-alone app for Revit which can also be combined with the MEPcontent Product Line Placer for Piping. Easily filter on manufacturer, diameter, valve category, or technical properties. Select and place valves in your Revit project and work directly with localized and up-to-date manufacturer specific products.

The MEPcontent Product Line Placer for Valves app will give you access to valve series from 6 leading manufacturers (Belimo, Econosto, Oventrop, TA, Victaulic and Watts Industries) and this number will increase in the future. Select valves based on pressure stage and have fittings and flanges added automatically. Content is optimized and localized by region including article number, GTIN, manufacturer data and category. Use the diameter from the pipes you use in your model and see what valves are available to fit with your piping system.

Why would you as a busy draftsmen, MEP engineer, designer or modeler care?

The app can save you a lot of time compared to other sophisticated modelling software. You only have to use the clear app interface to select and place valves in your Revit project without a dozen of buttons and options to choose from. The app can be combined with other MEPcontent apps such as the MEPcontent Product Line Placer for Piping, as well as Stabiplan's Export and Import Excel app.

How does it work?

Start drawing pipes from your favorite manufacturers like Georg Fischer, SANHA or Pegler Yorkshire. Add valves with this new app from the above mentioned six valve manufacturers. Export your project data from Revit into Excel, adjust the data, share it with purchasers or management (who perhaps do not have Revit) and import it back into Revit. A true time saving process!

In the free version of the Product Line Placer, you can select Oventrop valves. Both balancing valves and ball valves from Hydrocontrol and Optibal are made available in this version. The MEPcontent Product Line Placer for Valves can be downloaded and tried for free on You can also watch a short video on the store to see how the app works. If you want to gain access to the product lines and series from the other brands, upgrade the app to get the full version (for €25 / month or equivalent in £ or $) and switch between product lines to get more manufacturer specific content.

Read more here about the extra product lines and series made available in the full app.

Downloading this app only takes two minutes. Please sign in with your MEPcontent credentials or register for free to start downloading and using this app for Revit.

Start saving time by using the functionalities of the MEPcontent Product Line Placer for Valves app now!

Vaillant AuroTHERM solar panels free to download

Vaillant AuroTHERM solar panels free to download

17 January 2018

Vaillant AuroTHERM families are now available on MEPcontent!

Flat thermal solar panels for solar energy systems under pressure can be downloaded in Revit and IFC formats and are ready to be used in all your BIM projects!

The AuroTHERM families are designed to guarantee installation flexibility and high efficiency. These solar panels can be installed in virtually any setup, making them extremely reliable. They can optionally be connected horizontally or vertically and offer the possibility of being placed in or on a pitched roof and are also suitable for flat roofs.

Additionally, they are resistant to snow and do not suffer from dust or bad weather.

MEP engineers


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