Key takeaways
- A second level adds private space without a bigger footprint, at the cost of engineering and approvals.
- In Las Vegas, an occupied upper deck needs drawings stamped by a Nevada-registered engineer.
- Deck size, occupancy, and covered area drive the rules for stairs, smoke detectors, and sprinklers.
- Start earlier than for any other booth type, and confirm your hall can take a deck at all.
What a double-deck trade show booth is
A double-deck trade show booth, also called a two-story or double-decker exhibition booth, adds an occupied second level above the show floor. IAEE's display guidelines describe a multi-story exhibit as one where the display includes two or more levels, and note that in many cities it's treated as a structure for building purposes, which can mean a building permit based on drawings from a licensed architect or engineer.
The Las Vegas Convention Center's facility guide defines a multilevel exhibit as any occupied second story or greater reached by an approved means of egress. That word, occupied, is what changes everything: once people can stand on a deck, it has to be engineered, reviewed, and built like a small temporary building.
Why build up: what a second level buys
When floor space is limited or the footprint is already large, building up adds usable area without buying more floor. The upper level typically holds private meeting rooms, a hospitality lounge, or a quieter space for scheduled appointments, while the ground floor stays open for traffic, demos, and the hero product.
A deck also adds presence. A two-story exhibit reads from across the hall, and guests on the upper level get a view of the floor that makes a meeting feel like an occasion. For exhibitors who book back-to-back meetings all show, that private space can be worth more than another hundred square feet of floor.
Is your space and hall right for a double-deck?
Double-decks are usually built on large islands, because stairs, structure, and two exits take up real floor area. Before design, confirm the basics:
- Your booth type and size, and whether the show allows multi-level exhibits there
- The show's height limit for your hall, which caps the deck and anything above it
- The hall's ceiling: Venetian Expo lists Hall G at 13 feet 5 inches, against 32 feet 5 inches in Halls A through D
- Floor load, such as the 250 pounds per square foot static limit Venetian Expo lists for Halls A through D
- Overhead obstructions, columns, and utility locations on the floor plan
- The show's deadlines for multi-level drawings and approvals
Engineering and approvals for a two-story exhibit in Las Vegas
Las Vegas venues and shows are specific about this. The LVCC's facility guide requires any occupied upper deck to have an approved plan stamped by an engineer registered in Nevada, with a live load capacity of 100 pounds per square foot. Plans for every multilevel exhibit go to the LVCC's Safety and Fire Prevention Office in CAD format at least 30 days before the first move-in day, and plans used at an earlier show must be resubmitted each time.
Shows add their own steps. For the November 2026 SEMA Show, drawings for multi-level exhibits carrying the wet stamp of a Nevada-registered structural engineer were due to show management by September 4, and drawings had to be available for inspection on site. NAB Show's 2026 rules sent every multi-level booth to LVCVA Fire and Safety regardless of size. IAEE's guidelines recommend stamped engineering documents for all multi-story exhibits, so expect the same question at most shows.
Stairs, egress, and occupancy limits
Stairs decide much of the layout. Under the LVCC's facility guide, multilevel areas larger than 300 square feet or holding more than nine people need at least two remote means of egress, which means two stairways placed apart from each other. Spiral stairs aren't allowed for areas the public uses, with a narrow exception for areas under 250 square feet that meet specific tread and headroom dimensions.
SEMA's 2026 rules also required signs posted with the maximum number of people the structure can hold. Plan the stair locations, landings, and guardrails with the engineer from the first concept, since moving a stair late changes the structure, the meeting rooms, and the ground-floor plan.
Accessibility belongs in the same conversation. IAEE's guidelines suggest providing the same attendee experience on both levels of a two-story exhibit. If there's no lift, plan a ground-floor meeting space that's just as good as the one upstairs.
Fire safety: smoke detectors, sprinklers, and covered areas
A deck covers the floor beneath it, so it's a covered area under fire rules. The LVCC's facility guide requires battery-operated smoke detectors, audible outside the booth, in multilevel or covered areas over 300 square feet. Multilevel or covered areas over 1,000 square feet need a sprinkler system under the entire area and every level when the event runs seven days or longer, or the exhibit includes display vehicles, open flame, or hot work. A fire watch can also be required.
Venetian Expo's contractor guide takes a different route. Covered and multi-story displays can skip sprinklers only if the event runs fewer than seven show days, the display has no more than two levels, any enclosed roof uses an approved open-grid or melt-away material, extinguishers are within reach in every room, the booth is built of noncombustible materials, and a booth-specific fire watch is present outside show hours. At both venues, materials also have to meet flame-retardant requirements.
Building a deck on the show floor
A double-deck changes the install schedule. The deck structure goes in first, before walls, graphics, and furniture can go around it, and it usually needs lifts, more crew, and more time on the floor than a single-level exhibit. The LVCC's facility guide also requires construction and demolition of multilevel booths to comply with OSHA fall protection rules.
Venue labor rules apply too. At Venetian Expo, the exhibitor guide says floor-supported objects standing 16 feet, and shorter ones judged a hazard, may need safety ties, and that the venue's technical services provider supplies them. Freight is heavier, which affects material handling, so plan crates, labeling, and the order pieces come off the truck with the install sequence in mind.
Double-deck design ideas that earn the extra level
A second level should do something the floor can't. Ideas that usually justify the structure:
- Glass-fronted meeting rooms upstairs that look out over the floor
- An open upper lounge for scheduled hospitality, with a host at the stair
- A ground floor kept open for the hero product and demos
- A stair designed as a feature, lit and branded, rather than hidden
- Lighting on the underside of the deck so the ground floor doesn't feel like a basement
- Storage and a staff area tucked under the stairs
Planning a double-deck schedule
Work back from the earliest deadline in the exhibitor manual, which for a deck is usually the drawing submission, not move-in. Engineering has to be finished before those drawings can be stamped, and fabrication of the structure follows approval, so a double-deck needs the longest planning runway of any booth type. Leave room for review comments and a resubmission.
Building in the same city as the show helps. Innovate 3D designs and builds custom trade show booths in Las Vegas, with The Job Shop for CNC routing and fiber laser cutting and Vegas Visual for large-format print in the same building. For a Las Vegas show, the structure and graphics can be checked together before they travel across town.
Frequently asked questions
Does a double-deck booth in Las Vegas need a Nevada engineer's stamp?
If people will occupy the upper level, yes at the LVCC: the facility guide requires an approved plan stamped by an engineer registered in Nevada. Shows such as SEMA set the same requirement and their own deadline, so line up the engineer early.
How many staircases does a double-deck exhibit need?
At the LVCC, an upper level larger than 300 square feet, or holding more than nine people, needs at least two remote means of egress, typically two separate stairs. Spiral stairs aren't allowed for public areas except in very small decks that meet specific dimensions.
Does a two-story booth need sprinklers?
Sometimes. At the LVCC, multilevel or covered areas over 1,000 square feet need sprinklers when the event runs seven days or more or involves vehicles, open flame, or hot work. Venetian Expo has its own conditions. Smoke detectors are required at smaller sizes.
How much weight does an upper deck have to support?
The LVCC's facility guide requires an occupied upper deck to have a live load capacity of 100 pounds per square foot. The structural engineer also has to account for the hall's floor load under the deck's columns, so share the venue's specifications early.
Can one double-deck exhibit be used at several shows?
Yes, and that's often how the cost is justified. But approvals don't carry over: the LVCC requires plans to be resubmitted for each show, and other venues and cities may need updated engineering. Keep the drawings current and build in time for review every time.