MEP BIM Enabled Coordination - On Time Delivery and Higher ROI

Feb 26, 2015 -- Usually when it comes to building design, often the core focus is on several building features that create an appearance for the building - for example the shape, materials, finishes etc. However; what actually resides at the core is the structural framework and MEP coordination.

The designs of mechanical electrical and plumbing disciplines are extremely complicated; and hence need accurate coordination in order to avoid any kind of conflicts and clashes within and outside the system. Off shore MEP Design & MEP modeling help you in developing shop drawings and schematic design drawings that contain information about fabrication and installation of MEP components and systems respectively.

Talking about the schematic design drawings specifically, these drawings contain all the information to build and install MEP systems. However these drawings do not contain details about the fabrication of each component – as the contractor does not require these details for installing MEP systems. So what is the difference between shop drawings and schematic design drawings for MEP systems? Let us elaborate further:

Level of detail in shop drawings for MEP systems

  • Mechanical (HVAC dry): Along with the major equipment and duct lines, the exact size and location of all major equipments is also indicated.
  • Mechanical (HVAC wet): Shop drawings carry complete size and material information and indicate all joint and connection points in addition to the piping lines and number of connection points into VAV terminal unit shown in the schematic drawings.
  • Electrical: The electrical drawings carry all outlet locations including the main electrical line locations.
  • Plumbing: In addition to the plumbing lines, pipe sizes, offsets from wall, insulation and material details are also indicated. All connections and joints are also shown.
  • Process piping:  Outlet and drop locations are indicated along with exact dimensions. Piping lines are also mentioned. Material and size are noted and the offsets from wall, insulation and material are also indicated.
  • Fire protection: The shop drawings contain locations and dimensions of all sprinklers on reflected ceiling plans. All circuits and loops are also indicated and joints and connection points are shown.
  • Telephone datacom: All outlet locations are depicted in the drawing

Level of detail in Schematic design drawings for MEP systems

  • Mechanical (HVAC dry): Major equipment and duct line with duct sizes indicated on the drawings.
  • Mechanical (HVAC wet): Major piping lines and number of connection points into VAV terminal unit.
  • Electrical: The schematic design drawings carry all outlet locations and some main electrical lines.
  • Plumbing: Plumbing lines and pipe sizes are indicated in the schematic drawings for plumbing systems.
  • Process piping: The piping lines are indicated on the drawings – rough location and dimensions are indicated.
  • Fire protection: The drawings contain a preliminary layout of sprinkler heads with their exact locations.
  • Telephone datacom: Outlet locations are indicated in the drawings                  

Integration with Revit BIM

Today, BIM has created a major influence on engineers and architects alike. Now it is not only the architectural discipline, but also the MEP i.e. mechanical, electrical and plumbing facets where Revit MEP BIM Design has bridged the gap between contractors, fabricators, engineers, consultants and companies. The shop and schematic drawings are used to create MEP models. Once the 3D models for mechanical plumbing and electrical disciplines are ready, the process of MEP coordination starts.

When all the models are ready they can be placed together in a single ecosystem, and checked for clashes and conflicts. Any required iterations or changes are done so that the MEP systems fit into the structural and architectural framework in perfect harmony. Hence, with well coordinated mechanical-electrical and plumbing network and clash free BIM, the risk of clashes between MEP systems and their detection on site during the construction work is eliminated. Therefore, the requirement of rework, design iterations etc is also eliminated.

Besides, since MEP modeling includes both schematic and fabrication details in the form of actual 3D models, the need to redraft iterated designs and carry out manual clash detection repeatedly also reduces. Every involved individual can see the MEP system details in complete or partial forms as required. A single model can be used at various levels of abstraction. Hence again, the first point that MEP BIM links together and keeps everyone involved on the same page rings true.

Revit MEP, today makes the best use of intelligent, information rich models to allow accurate MEP design in a shorter time span. This has a cascading effect on the processes that follows and hence also on the project delivery time and hence ROI.

About Author: Nikunj Patel is a design engineer working with Hi-Tech CADD Services for the past 4 years. He loves designing specialized industrial equipments and can always be found in the lab discussing, brainstorming & tweaking designs. He has also worked on architectural projects taking interest in every aspect of design & analysis.

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