When planning a convention center, the integration of movable partitions with HVAC ducts is a critical coordination task. The question of convention center partition stacking hvac duct drawings is not just about where walls go, but how they interact with the building’s mechanical systems. For procurement teams, architects, and contractors, understanding what drawings are necessary can prevent costly clashes and operational inefficiencies. This article outlines the essential drawings and specifications needed to ensure that movable partitions stack correctly without interfering with air handling, ductwork, or other services.

Understanding Movable Partition Stacking in Convention Centers
Movable partitions in convention centers are designed to divide large spaces into smaller, flexible rooms. Unlike fixed walls, these partitions are individually movable and are suspended from a top track system. This design allows them to cross openings without the need for a floor track, which is a key advantage for accessibility and flexibility. When not in use, the panels are parked at a planned stacking position, which is typically a recessed pocket or a designated area along a wall. The stacking position must be carefully planned to avoid conflicts with HVAC ducts, lighting, and other overhead services.
Why Stacking Coordination Matters
The stacking position is not just a storage area; it is an integral part of the partition system’s functionality. If the stacking area is not properly coordinated with HVAC ducts, the ducts may obstruct the path of the panels, preventing them from stacking fully. This can reduce the usable space or render the partition system inoperable. Therefore, drawings that clearly indicate the stacking route and the clearances required are essential.
Key Drawing Types for Partition and HVAC Coordination
To ensure successful integration, several types of drawings should be part of the project documentation. These drawings serve different purposes, from conceptual layout to detailed installation.
Layout Drawings
Layout drawings are the foundation of any partition specification. They show the floor plan with the partition locations in both extended and stacked positions. These drawings must include the stacking zones and the paths that the panels will travel. For convention centers, where large spans and multiple stacking positions are common, the layout must be reviewed to ensure that the stacking routes are straight, have adequate turning radii if needed, and do not conflict with columns, stairs, or other fixed elements.
Share the opening plan, stacking position and fixed obstructions.
Reflected Ceiling Plans (RCP)
The reflected ceiling plan is crucial for coordinating the top track with HVAC ducts. This drawing shows the ceiling layout as if viewed from above, including the location of ducts, diffusers, and other mechanical equipment. The top track for the movable partition must be installed in a location that does not interfere with the ductwork. The RCP should indicate the exact position of the track, the suspension points, and the clearances required for the panels to move freely.
Section Drawings
Section drawings provide a vertical view of the partition and the ceiling space. They are essential for showing the relationship between the top track, the panel height, and the overhead ducts. These drawings should indicate the vertical clearance needed for the panels to be suspended and to stack. They also show how the track is integrated with the building structure, which is important for load-bearing considerations.
Stacking Detail Drawings
Stacking detail drawings focus specifically on the stacking area. They show the exact dimensions of the stacking pocket or zone, the number of panels that can be accommodated, and the clearances around the panels. These drawings must be coordinated with the HVAC drawings to ensure that ducts do not encroach on the stacking space. They should also indicate any access panels or doors required for maintenance.
HVAC Coordination Drawings
HVAC coordination drawings, often part of the mechanical, electrical, and plumbing (MEP) coordination set, show the routing of ductwork and other services. These drawings must be overlaid with the partition stacking drawings to identify potential clashes. The goal is to ensure that ducts are routed around the stacking areas or that the stacking areas are positioned to avoid ducts. This is a collaborative effort between the architect, mechanical engineer, and partition supplier.
Specifying Clearances and Routes
Clearances are critical in partition and HVAC coordination. The drawings must specify the minimum clearances required for the panels to move and stack without obstruction. This includes horizontal clearances for the panels to travel and vertical clearances for the track and suspension. The stacking route must be clearly indicated, including any turning points. For convention centers, where panels may need to turn corners, the turning radius must be carefully calculated and shown in the drawings.
Straight and Turning Routes
In many convention center applications, partitions are required to follow straight routes, but sometimes turning routes are necessary to accommodate the building’s geometry. The drawings should show the exact path of the panels, including any curves or turns. The turning radius must be sufficient for the panels to negotiate without binding. This is typically determined based on the panel width and the track configuration.
Stacking Position Design
The stacking position is where the panels are parked when not in use. This area must be designed to accommodate the full stack of panels, with enough space for the panels to be compactly nested. The drawings should indicate the depth and width of the stacking zone, as well as any structural support needed to hold the weight of the stacked panels. The stacking position should also be accessible for maintenance and cleaning.
Integrating Pass Doors and Access Requirements
Pass doors are often required in movable partitions to allow passage without opening the entire partition. These doors must be integrated into the panel design and must not interfere with the stacking operation. The drawings should show the location of pass doors and how they are hinged and latched. Additionally, access requirements for maintenance of the HVAC system must be considered. If ducts are located near the stacking area, there may be a need for access panels or hatches, which should be coordinated in the drawings.

Documentation and Submittal Process
Proper documentation is essential for procurement and installation. The project documentation should include all relevant drawings, specifications, and coordination reports. This documentation serves as a reference for the contractor and ensures that the installed system meets the design intent. The submittal process typically includes shop drawings from the partition manufacturer, which must be reviewed and approved by the design team.
Shop Drawings vs. Design Drawings
Shop drawings are prepared by the partition manufacturer and provide detailed information about the specific product to be installed. These drawings include dimensions, materials, and installation details. They must be coordinated with the design drawings to ensure that the product fits within the building’s constraints. The design team should review shop drawings to verify that the stacking positions and clearances are correct.
Review the full panel route and parking footprint.
Coordination Meetings
Regular coordination meetings between the architect, mechanical engineer, and partition supplier are essential to resolve clashes and ensure that all parties are aligned. During these meetings, the drawings are reviewed, and any issues are addressed. This proactive approach can prevent costly changes during construction.
Acoustic Considerations in Drawings
Acoustic performance is a key requirement for convention center partitions. While the drawings primarily focus on physical coordination, they should also indicate acoustic requirements. The partitions are designed to provide sound insulation, but the actual performance depends on the seals and the installation quality. The drawings should specify the required acoustic ratings, such as STC (Sound Transmission Class) or Rw (Weighted Sound Reduction Index), which are measures of how well a partition reduces sound transmission. However, these ratings are not a direct count of decibels; they are derived from laboratory tests. The drawings should also indicate the locations of perimeter seals and the requirements for acoustic sealing at the top and bottom of the partition.
Common Pitfalls and How to Avoid Them
Several common issues arise when coordinating partitions with HVAC ducts. One is the lack of coordination between the ceiling plan and the partition layout, leading to clashes. Another is insufficient clearances, which can prevent the panels from stacking fully. To avoid these pitfalls, it is essential to produce detailed drawings that are reviewed by all parties. The drawings should be updated as the design evolves, and any changes should be communicated promptly.
Case Study: A Hypothetical Convention Center
To illustrate the importance of proper drawings, consider a hypothetical convention center with a large ballroom that can be divided into three smaller rooms. The movable partitions are designed to stack at one end of the ballroom. The HVAC ducts are routed along the ceiling, and the initial layout placed a large duct directly above the stacking area. Without coordination, this would have blocked the panels from stacking. By creating a reflected ceiling plan and overlaying it with the partition layout, the design team identified the clash and rerouted the duct around the stacking zone. This simple adjustment saved significant time and cost during construction.
For the next planning step, review the related EBUNGE guide, review selected projects and confirm the opening, ceiling condition, layout, finish direction and acoustic requirement for the project.
Conclusion
Specifying movable partition stacking in convention centers requires careful attention to drawings that coordinate with HVAC ducts. Layout drawings, reflected ceiling plans, section drawings, and stacking details are all essential to ensure that the partitions can move and stack without obstruction. By clearly indicating clearances, routes, and stacking positions, and by coordinating with the mechanical engineer, you can avoid costly clashes and ensure a functional, flexible space.
FAQ
What are the key drawings for coordinating movable partitions with HVAC ducts?
The key drawings include layout drawings, reflected ceiling plans, section drawings, stacking detail drawings, and HVAC coordination drawings. These ensure that the partition tracks and stacking areas do not conflict with ductwork.
Why is the reflected ceiling plan important for partition stacking?
The reflected ceiling plan shows the layout of overhead services, including HVAC ducts, relative to the ceiling. It is essential for positioning the top track and ensuring that ducts do not obstruct the partition movement or stacking.
How do you determine the stacking position for movable partitions?
The stacking position is determined based on the floor plan, the partition system’s capabilities, and the need to avoid conflicts with HVAC and other services. The layout must be reviewed to ensure that the stacking route is clear and that the stacking area has sufficient space.
What clearances should be specified for partition stacking?
Clearances should be specified for both horizontal movement and vertical suspension. The exact values depend on the partition system and the building’s structure, and they must be confirmed with the manufacturer.
How can pass doors affect stacking coordination?
Pass doors add complexity to the partition design. They must be integrated into the panels without interfering with the stacking operation. Drawings must show the location of pass doors and ensure they do not obstruct the stacking path.
What acoustic information should be included in the drawings?
Drawings should specify the required acoustic performance, such as STC or Rw ratings, and the location of perimeter seals. However, these ratings are conceptual and must be confirmed through testing and installation quality.

For project-specific support, it is crucial to discuss your requirements with experts who can review your layout and provide guidance on the necessary drawings and specifications. Contact us to discuss your convention center project and ensure your partition stacking and HVAC duct coordination is handled correctly.
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