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expressdeck alphadeck

How to Install Risers, Stages & Tent Flooring


How to Install - PDF


Installation Instructions For Modular Staging Systems

Your ExpressDeck Portable Staging System is quick and simple to assemble. The pieces are light enough to be handled by one person, and attaching the portable platform to the risers, creating a large platform with multiple decks and adding guardrails and steps can be handled with a single allen wrench (hex key). The true genius of the ExpressDeck modular staging system lies in its simple, quick and intuitive installation.


Note: If installing guard rails on your portable stage or choral risers, you must pre-drill holes before assembling your stage decks and staircases.


Step 1: Unfold Modular Staging Riser Legs

riser legs unfold for portable stageportable stage riser unfoldmodular stage riser legs unfold

Riser legs fold and unfold easily to make ExpressDeck a truly portable modular staging system. Simply grab hold of two corner legs and pull!

Step 2: Place Portable Stage Platform On Riser Legs

modular staging platform is lightweight place platform on risers of portable modular stage

Simply place the staging platform on the risers, aligning the corner holes on the underside of the platform to the corresponding pegs on the riser legs.

Step 3: Remove the Enclosed Hex Key from the Staging Platform
hex key included for easy assembly of your portable stage

A hex key is included with each platform module, packed in foam along one of the edges.

Step 4: Lock Portable Stage Platform and Riser Together

lock platform to riser to make modular stage portable stage assembles easily with hex key

Use the included hex key to lock the platform to the riser. With a simple 90°clockwise turn, you have assembled your first ExpressDeck modular stage deck. Repeat these four steps for each of your portable staging decks.

enjoy your portable stage

Step 5: Align Portable Staging Decks


Align portable staging decks

Arrange your modular staging decks so they are all facing the same way, with the female locking mechanisms towards the front of the portable stage.

Step 6: Lock Stage Platforms Together (same height)

slide stage decks togetherlock stage platforms togetherportable stage platform locking mechanism

Slide the portable stage decks together, nesting the platforms' male and female locking mechanisms and turn the hex key 90° to lock. It's so light and easy, but your modular stage can now bear up to 185 lbs/sq ft, or 2,960 lbs per 4' x 4' deck!

Step 7: Align Portable Staging Stairs / Stage Decks of Different Heights

To create a staircase for your portable staging system, modular choral risers, or to add different levels to your portable stage, follow steps 1-6 to assemble each step, choral riser deck, or stage deck, including pre-drilling hand rail holes.

create choral risers and stairs for your portable stage

Line up riser legs of different height decks. (Shown here without portable staging or step platforms - they can be added before or after risers are locked together.)

Step 8: User Riser Clamps to Lock Risers Of Different Heights

clamp risers together to build choral risers choral riser clamps

Use riser clamps (included in Stair Kits, sold separately for choral risers and tiered modular stages) to secure riser legs of different heights.

Step 9: Stacking Riser Legs For Greater Heights

Risers are available in four heights, 8", 16", 24", and 32", but you can stack risers to acheive greater heights or add more levels to choral risers using Riser Couplers and Coupling Posts.

coupling post riser coupler

Replace corner pegs in lower riser legs with coupling posts.


replace pegs with coupling posts to stack portable stages secure stacked risers for safe choral risers


Place the upper riser legs on top and slide riser couplers in place to secure the connection. We do not recommend stacking more than two risers.

Step 10: Adding Guard Rails to Modular Staging and Hand Rails to Stairs

Pre-drill holes before attaching saftey rails to modular staging pre-drill holes before adding guard rails to portable staging

Before assembling your portable stage decks, determine where your guard rails and stair hand rails will be added to your modular staging. Pre-drill holes using 7/16" or 11mm dril bit through the marked spots on the underside of the portable stage platforms.

add guard rail to stage platform secure guard rail to stage with bolt

Slide Guard Rail over modular stage platforms with pre-drilled holes and secure with included bolt and hex key.

Step 11: Lock Guard Rails Together for an Extra-Safe Portable Stage

for extra safe portable stages, bolt safety rails togetherbolt rails together

Make your portable staging system safe and secure by bolting guard rails together as shown.

Step 11: Add Skirting for a Professional-Looking Portable Stage

it's easy to add skirting to your portable stage

ExpressDeck modular stage skirting comes in 4' widths in the same heights as riser legs. Each skirt comes with 4 clips velcroed to the top edge. Simply snap the clips in place along the front edge of your portable staging platforms and hang your skirting from the velcro. Staging skirts are very easy to reposition and remove. If necessary, use a steamer to remove wrinkles.

add skirting to your portable stageportable staging with skirt

Step 12: Take the Show on the Road With Portable Staging Cases!

pack your portable stage into this convenient flight case

Each ExpressDeck modular staging flight case can hold up to six 4' x 4' portable stage platforms, six risers of any height, six staging skirts, and hardware. Simply pack up your portable staging system and roll it out to your next venue.


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AlphaDeck Portable Staging System Installation Instructions


How to Install - PDF

Step 1 - Preparation

A. Before setting up this system, determine the location of the stages and all the parts you will need.

B. Read through the installation instructions and make sure you have all the parts you need.

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Step 2 - Leg Assembly

A. Determine the height of stage required in order to choose the right size legs:
If you are dealing with an uneven ground, you will need to take that into consideration and ensure you have the steel legs to accommodate different heights.
If outdoors, ensure the ground is hard enough to support the stage without concerns of the legs sinking.

B. If the stage is being set at a height less than 24 inches, then you can affix the leg to the stage unit at this time. To do so, insert the top of the leg into the base unit and use a snap pin to connect by pushing it through both holes and clasping it on the other side.

C. If you require a telescoping adjustable leg or a taller staging system you will use the larger 1 ¾ inch square tube as a telescoping sleeve by affixing the leg to the rubber base foot. You will line up the leg with the base foot and place a snap pin through the third hole and clasp on the other side (as done in 2A). You will then set the appropriate height needed for the stage by sliding the 1 ½ inch steel leg into the telescoping sleeve and affix by placing a snap pin through and clasping on the back side. You must ensure that you always leave at a minimum 6” overlap to provide strength and stability. Finally, you will insert the leg into the stage and affix using a snap pin.

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Step 3 - Setting Up the Stages

A. Determine the location of the first stage.

B. After you have one stage assembled with all four legs, you are ready to start adding on to your staging system. First you are going to place this first unit in the back left corner and start building out from there.

C. Ensure that all snap pins are facing out, so that the clasp is on the outside of the steel legs.

D. Ensure that the slotted sides of the connection system (female) are facing towards the outside of the staging system, and the locking side (male) is facing in.

E. Firstly, line up the stages so that they face the same way as the first one, with the two lock sides (male) facing the way in which you want the deck to expand. Meaning towards the front and along the back row. The slotted sides will be facing the assembled deck and the back of the stage.

F. Insert two legs as shown in the diagram and affix as done before. The back row will only require two legs per deck.

G. Attach the second deck to the first by sliding the oval shaped slotted opening over the round peg.

H. Once aligned correctly, use the hex wrench to tighten, by inserting through the surface hole and turning clockwise to engage the cam lock. Once it has been turned, the decks will be locked into place.

I. Upon completion of the back row of decks, start the second row by affixing two legs as shown in the graphic to the side, and follow steps C and D above.

J. Continue assembling decks as shown in the diagram, by inserting one leg into far corner as shown and pin in place with snap pin. You will continue assembling in this fashion, locking the decks together by tightening the cam locks on each deck as shown above.

K. You will continue to assemble the decks in this fashion as you move towards the front of the staging system. The final deck will need just one leg to complete the assembly of the system. All the stages should be locked together with cam lock and double-checked after installation.

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Step 4 - Guard Rail Installation
A. The outside dimension of a standard guard is 4’, Attach the stage guard rail to the female side of the first row of stages.

B. Use a bolt and nut to lock the guard rail on the stage.

C. Use a clamp and quick clip to make connection between guard rails.

D. Use a quick pin (special pig tail) to lock the horizontal bar to the guard rail.

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Step 5 - Diagonal Brace Assembly
A. Diagonal bracing is required on stages with heights over 30”. Brace each corner and every third bay along each side, connecting with a nut and bolt.
B. The bolt space of the diagonal brace will be :
12” with legs at 48” center line.
18” with legs at 46” center line.

C. The Diagonal Brace is strongly recommended to maximize the stability of your staging system.

D. When bracing the legs, a common leg should be braced in both directions as the figure.

E. The amounts of brace used on the stages area will depend on the final conditions.

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Step 6 - Stair System Assembly and Connection

A. Refer to the stair’s drawing to assemble stair.

B. Bolt each stair on the bracket.

C. The first stair will be connected to the stage on the male side.

D. Bolt the stringer to the adjustable rubber foot.

E. Using a bolt and nut to lock the stairs and stringers together.

F. Bolt the top part of the male side of the last stair. Rotate the cam lock to lock the stage and stair together.

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Step 7 - Ramp Connection
A. Ramp Deck is used to allow equipment and wheelchair access to the staging.

B. Combine ramps and regular decks to create the appropriate length and slope of the ramp, depending on stage height and layout.

C. The ramp’s assembly is same with stage, the male side on the ramp can lock with the female side of stage by means of cam lock easily, and the special requirement can be made on demand.

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Step 8 - Hand Rail on Folding Stair

A. Use bolts and nuts to assemble the handrail parts as in the diagram below.

B. Set up the hand rail with right side and left side respectively.

C. Bolt the hand rail to the stringer.

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