MEP and HVAC Coordinated Shop Drawings Services.

BIM can create mock-ups of the construction business ahead of time, allowing you to know exactly how to plan your site, move your materials and coordinate with your construction workers. Your HVAC system won’t be getting in anyone’s way during construction when you use BIM to plan ahead. Planning your duct-work for your heating and air-conditioning, not to mention a place for the systems themselves, is essential to a smooth-flowing project. Here at INDBIM, we take great care and pride everyday in producing professional shop and coordination drawings.

Duct detailing and sizing are critical aspects of HVAC system design to address a building’s airflow requirements and to achieve optimal occupant comfort. Prefabrication duct modeling helps determine the right duct size, duct work routing, and the correct type and amount of construction material required. 3D-BIM applications make easy work of duct sizing by incorporating various calculations, including static regain values and constant velocity. It’s also critical to work out and document the constant pressure drop in any duct work. In turn, an HVAC contractor may apply BIM tools to detect conflicting visualizations, data, or specifications between their ductwork designs and the general architect’s 3D models.

A contractor who’s building a heating system requires accurate information to get the job right without project delays. The MEP expert needs to work out heat load calculations as well as door and window technical requirements (including solar heat gain coefficients). HVAC shop drawings can provide that information. A useful heating system prefabrication blueprint should include 2D/3D documentation such as:

  1. Detailed schematics
  2. Control systems
  3. Pipe routing

Cooling system shop drawings take into account various building specifications and codes, for example, cooling load calculations that help determine the size and capacity of the equipment. Noise control is also an essential feature of such designs. The drawings apply in the fabrication of air conditioners, air-cooled and water-cooled equipment, as well as refrigeration systems. Cooling system shop drawings may show components such as:

  1. Pumps
  2. Electric motors
  3. Fans
  4. Pressure valves
  5. Commissioning station
  6. Flexible connectors
  7. Air handling units
  8. Fan coil units
  9. Risers
  10. Temperature sensors

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Case Studies

Town place marriott

Project size: 91290 Sq Ft.
Team Member: 2 person
Duration: 15 days
Description: Our scope was to developed this project BIM modeling and coordination of HVAC duct work and Refrigerant piping with respect to Architecture model over the total area.
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United Health Group ONCOLOGY CENTER

Project size: 65920 Sq Ft.
Team Member: 2 person
Duration: 12 days
Description: Our scope was to developed accurate coordination and connection of Duct and Mechanical equipment as well as 2D drawings. Revit BIM model was developed from PDFs.
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Duct detailing and sizing shop drawings

Duct detailing and sizing is a critical component of MEPF design projects. Engineers, contractors, and architects all around the world recognize the importance of getting their ductwork design right to facilitate the proper installation of efficient HVAC systems. However, why do you need to outsource this service?

Whether you’re designing industrial, commercial, or residential heating and cooling systems, your customers expect nothing short of the highest standards of quality. They need you to do the work quickly and cost-effectively too. And you need to utilize materials and resources efficiently to keep your operations profitable. Outsourcing duct detailing and sizing shop drawing services to INDBIM enables you to achieve your business objectives and satisfy customer expectations.

As your MEPF business grows, you may realize that the demand for your plumbing shop drawings is quickly out-pacing your in-house capabilities. You can turn to an experienced BIM service provider to help with HVAC ductwork design and drafting. Outsourcing to an lead coordination services lets you leverage best in class HVAC drawings technology at a fraction of typical design costs.

A professional designer can do all the HVAC design work as your in-house team focuses on core business functions. Such a provider utilizes cutting-edge software like Autodesk Revit to produce high-quality schedules, schematics, and duct sizing diagrams. The HVAC shop drawings include legends, detail, and control components.

How INDBIM Experts Handle Duct Detailing and Sizing?

Engineers may take any one of several duct design approaches to model efficient ventilation systems. The methods include:

  1. Velocity reduction
  2. Equal friction
  3. Static regain

If using Revit, designers apply parameters such as air density, dynamic viscosity, and flow to work out duct sizing accurately. They have to indicate airflow for each component of the duct system. HVAC shop drawings must take into account heating and cooling loads for each room. Duct shapes are vital considerations in professional ductwork modeling. There are several options, including round, rectangular, and flat-oval. To optimize the configuration, designers may apply appropriate parameters to branch duct work. In turn, they can optimize dimensions for the various sections being sized.

For example, minimizing the maximum width and height for rectangular ductwork reduces the amount of material required for its construction, which limits weight and cost of the design. Also, a smaller diameter helps minimize the amount of air coming into contact with the ductwork material, which reduces friction in the system. The more the resistance across the duct network, the harder the HVAC equipment has to work to deliver comfort, and this increases operating costs.

Heating system shop drawings

Heating system design shop drawings require the correct application of HVAC principles, along with consideration of building materials and methods of construction, and strict adherence to mandated building codes and safety regulations.

The process of developing heating system design shop drawings will follow after a careful analysis by a skilled mechanical engineer. The engineering information is then used to select HVAC components, dictate the size of equipment and ductwork layout, and design the airflow pattern for maximum occupant comfort. Some of the information supplied by an engineering analysis to be used in the heating system design drawing layout include:

  1. heating and ventilation load square footage
  2. door and window specifications
  3. solar heat gain coefficients and U-values
  4. window to wall ratios and air-tightness

As a client seeking high-quality heating system design shop drawings from a mechanical engineering service provider, there are a number of specific criteria that you should expect in a complete set of desing documents. Aside from the architectural floor plan which will show the heating duct layout as it is to be routed through the building, the following documentation may also be included in a good heating system design:

  1. Detailed Schematics – to show the mechanical and electrical connections and values for major equipment such as pumps, water heaters, exhaust fans, controls, and the air handling unit (AHU).
  2. Control Equipment – includes the electronic system operating parameters, along with the location and connections for the control panel, time clocks, sensors, and control valves.
  3. Duct or Pipe Routing – depending on the type of heating system installation, a boiler heating system will show pipe routing, while a hot-air system will have detailed duct layouts for each zone shown in our piping shop drawings.
  4. Mechanical Room Layout – will detail the installation and location of all mechanical room equipment and associated electrical equipment as required for the heating system.

When you require careful heating system design shop drawings after a mechanical engineering analysis for new construction projects, contact INDBIM for fast and accurate mechanical layouts and detailed schematics that can be used to assist in equipment purchases and for heating system and duct work installation guidance.

Cooling system shop drawings

Facilities cooling system design shop drawing can include mechanical room equipment layout and details, roof top air handling unit (AHU) design layouts, floor by floor duct and ventilation routing, layout of thermostats and building controls, and the layout of the cooling system control panel which may be centrally located for ease of access by facilities maintenance. Of course, this is an oversimplified description of the types of facilities cooling system design shop drawings required to maintain optimum comfort levels in every zone of a structure.

Applying Best Practices for Cooling System Design

At INDBIM, our HVAC designers are skilled in applying industry best practices for cooling and dehumidifying large and small spaces – knowledge that goes beyond the technical requirements of a cooling system. There are many variables that must be considered when locating ductwork, diffusers, and returns. Also, depending on the type of cooling system choosen for the facilities, such as zone distribution – the location of variable air volume boxes for precise control of zone temperatures which will lower energy consumption and provide passive dehumidification must also be considered.

Just a few of the factors that will have an impact on interior comfort levels when outdoor temperatures are high, include:

  1. internal heat sources in the room, including lighting, occupants
  2. room exposure to solar heating
  3. amount of open space in the room without walls or partitions
  4. nature of the work which may dictate cooler or warmer settings

High performance cooling systems can accomplish hugh saving in energy costs. When HVAC systems are designed within a 3D BIM model workflow, an even higher level of “smart HVAC technology” can be used to not only monitor power usage, but also support intelligent facilities operations:

  1. predictive maintenance to improve life cycle of components
  2. recognize zone-specific energy demands to optimize HVAC
  3. limit the consumption of energy in unoccupied building zones
  4. automatically detect faults and provide diagnosis
  5. reduce cooling system usage during peak energy demand

When you partner with INDBIM for your cooling system design shop drawings, you will find many benefits that outsourcing this type of detailed drafting and design will offer. We can provide not only cooling design layout shop drawings for owner review and the contractor/vendor bidding, we are also skilled in producing any required mechanical shop drawings and sheet metal details that may be required for non-standard duct routing or custom enclosures.

FAQs: HVAC Shop Drawings


AutoCAD is generally preferred software for HVAC design drawings, but with advent of Revit we hope Revit becomes first choice.
Sheet metal fabrication are used for automobile, Duct modeling, ship building, door window, elevators and kitchen equipment’s etc.
Scale means 1 unit is equal to 75 units. For eg 1cm shown in drawing is equal to 75 cm in real scale.
Spatial coordination means coordination of different AEC disciplines with respect to the working space availability for installation, maintenance and repair.
Sheet metal fabrication is a process of making structures, machine parts, etc. by sawing, drilling, shearing, stamping to sheet metal.
The heating, ventilation and air conditioning system is extremely important concern for pharma industry, which aids to enhance and maintain the quality of drug products. The American society of Heating, refrigerating and air-conditioning engineers defines air HVAC system as a “ a system that must accomplish four objectives simultaneously, namely, control of air, temperature, control of air humidity, control of air circulation, and control of quality. This standard are called hvac validation.
HVAC system design is a sub discipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer.
Ventilation systems can be categorized as one of four types: exhaust, supply, balanced, and heat-recovery.