1. What Is This Structure?

This structure can be understood as a:

Mobile scaffold access and working tower for elevated box truss installation.

There are two separate temporary structural systems in the application shown:

Box Truss Lighting Frame

Creates the event lighting structure.

Mobile Scaffold Access Tower

Creates the elevated access and working positions needed during installation.

In simple terms:

Box Truss = Structure Being Installed

Scaffold Tower = Structure Used to Help Install It

This distinction is important because the scaffold should not automatically be described as a support tower for the finished truss simply because the two structures stand close together during installation.

2. Overall Structural Configuration

The supplied BOQ shows that this is a modular tower assembled from two different main frame heights:

• 5-rung frame — 1.35 × 2.31m

• 4-rung frame — 1.35 × 1.848m

Together with diagonal and horizontal bars, these frames create the main vertical tower body.

The access and working system then adds:

• 45° stair flights;

• standard platforms;

• trap-door platform;

• toe board;

• guardrails.

At ground level, the system includes:

• 6-inch wheels;

• adjustable legs;

• 3m long outriggers/supporters.

The structural sequence can therefore be read as:

Mobile & Adjustable Base

↓

Outrigger Support

↓

Modular Scaffold Frames

↓

Horizontal & Diagonal Bracing

↓

45° Stair Access

↓

Intermediate Platforms

↓

Upper Working Platform

↓

Guardrail / Toe Board

↓

Elevated Box Truss Installation Position

3. Main Scaffold Frames

The tower body uses two confirmed frame sizes.

5-Rung Frame

Width × Height: 1.35 × 2.31m

Quantity:

2 pcs

4-Rung Frame

Width × Height: 1.35 × 1.848m

Quantity:

2 pcs

The use of modular frames allows the tower to develop vertically while providing attachment positions for the horizontal members, diagonal braces, platforms and stairs.

The BOQ also lists a 3-rung frame (1.35 × 1.386m), but no quantity is specified for this particular configuration. It should therefore not be counted as part of the confirmed 5m tower BOQ.

4. Horizontal and Diagonal Bracing

The tower includes two main types of connecting members:

Diagonal Bar SD1

Quantity: 8 pcs

Horizontal Bar SD2

Quantity: 6 pcs

Together with the scaffold frames, these members form the braced three-dimensional tower.

Conceptually:

Scaffold Frames

Horizontal Bars

Diagonal Bars

=

Braced Tower Body

The diagonal bars should therefore not be treated as secondary accessories. They are part of the tower configuration shown in the confirmed BOQ.

This description explains the structural arrangement only; it does not represent a calculated load-capacity or stability conclusion.

5. Mobile Base and Adjustable Legs

The tower uses:

6-Inch Wheel and Adjustable Leg

Quantity: 4 pcs

The caster arrangement provides mobility, allowing the access tower to be repositioned for different work locations when appropriate.

The adjustable-leg function also provides a means of adjusting the tower base during setup.

This is particularly relevant for box truss installation because the required elevated working position may move from one part of the lighting frame to another as assembly progresses.

However:

Mobile does not mean the tower should be moved while workers are using the elevated platforms.

Actual positioning, wheel locking, leveling, relocation and use must follow the applicable equipment instructions and site requirements.

6. 3m Long Outriggers

A particularly important component confirmed by the BOQ is the:

Long Outrigger — 3m Supporter

Quantity: 4 sets

These outriggers extend outward from the main tower footprint.

This means the complete configuration should not be described simply as:

1.35m-wide mobile tower

because the operating footprint includes the outrigger arrangement.

The structural concept is:

Narrow Vertical Tower

Extended Outriggers

=

Larger Base Arrangement

The exact installed footprint depends on the actual outrigger setup.

The presence of the outriggers is a confirmed product fact. However, no specific allowable tower height, wind condition, platform load or stability rating should be inferred from them without corresponding engineering or manufacturer documentation.

7. 45° Stair Access

The confirmed configuration contains:

6-Rung 45° Stair

Quantity: 2 pcs

The BOQ also lists 5-rung and 4-rung 45° stair options, but no quantities are specified for them in this configuration.

Therefore the confirmed tower uses the 6-rung 45° stair as its internal access component.

This creates a more structured vertical circulation route than a simple vertical ladder.

The access logic becomes:

Ground Level

↓

45° Stair

↓

Intermediate Platform

↓

Second 45° Stair

↓

Upper Working Level

This is one reason the product is better described as an Access Tower rather than merely an aluminum scaffold.

8. Working Platforms

Three platform components are confirmed in the BOQ.

Trap-Door Platform SD7

Quantity: 1 pc

Platform SD6

Quantity: 2 pcs

The platforms create working and transition levels within the tower.

The trap-door platform also integrates the vertical access route with the platform system.

The complete concept is therefore not:

climb directly to the top

but rather:

Stair → Platform → Stair → Platform → Working Position

This creates multiple usable elevations within one temporary access structure.

For more structures designed around temporary elevated work areas, see:

Working Platform Structure
https://www.dragonstructure.com/Working-Platform-Structure-pl06055276.html

9. Guardrail and Toe Board Configuration

The confirmed BOQ includes:

Guardrail SD9

Quantity: 2 pcs

Toe Board SD7

Quantity: 1 pc

These components are associated with the elevated platform arrangement.

They help define the perimeter of the upper working area as part of the supplied tower configuration.

The exact safety requirements for guardrails, toe boards, platform openings and working-at-height protection must still follow the applicable project and site requirements.

The presence of these components in this BOQ should not be interpreted as a general certification or compliance statement.

10. How the Tower Works During Box Truss Installation

For a rectangular outdoor lighting frame, elevated installation work may occur at several positions.

For example:

Corner Connection

→ Upper Horizontal Truss

→ Next Corner

→ Another Elevated Connection

The access tower can be positioned near the required work area, providing installers with stair access and an elevated platform.

After work at one location is completed, the tower can be prepared for relocation and moved to another position when appropriate.

The practical relationship is:

Position Access Tower

↓

Set Up Base / Outriggers

↓

Reach Required Working Level

↓

Carry Out Truss Installation Work

↓

Return to Ground

↓

Prepare Tower for Relocation

↓

Move to Next Required Position

This describes the functional logic of the system rather than prescribing a universal erection procedure.

11. Why This Is More Than a Ladder

A ladder mainly solves:

How can the installer reach the required height?

This tower solves a broader problem:

How can the installer reach the required height and have a temporary elevated position from which to work?

That distinction can be summarized as:

Ladder

Climb → Reach

Mobile Access Tower

Access → Platform → Working Position → Multiple Levels → Relocation

For repeated installation work around an elevated box truss structure, this can make the scaffold tower a much more complete installation-access system.

12. Confirmed BOQ — 5m Mobile Scaffold Access Tower

Listed Options Not Included in the Confirmed Quantity

The original specification table also lists:

• 3-rung frame — 1.35 × 1.386m

• 5-rung 45° stair

• 4-rung 45° stair

but no quantities are given for these items.

They should therefore be treated as listed component options rather than confirmed parts of this specific BOQ.

13. Typical Applications

This mobile access tower configuration can be considered for temporary elevated work such as:

• outdoor box truss lighting frame installation;

• event truss assembly;

• lighting grid installation;

• exhibition truss installation;

• temporary roof truss installation access;

• elevated truss connection work;

• event structure inspection;

• lighting equipment installation;

• temporary event-structure maintenance.

The required tower configuration should be determined by the actual working position, access requirement and project conditions.

14. Configuration Variables

The 5m configuration should not be treated as the only available solution.

Different projects may require changes to:

• tower height;

• frame combination;

• stair arrangement;

• platform elevation;

• number of working levels;

• tower footprint;

• outrigger arrangement;

• access direction;

• mobility requirements.

The most useful starting information is therefore not simply:

“I need a 5m scaffold.”

Instead, provide:

the height and position where the installer actually needs to work.

The configuration path becomes:

Truss Geometry

→ Connection / Installation Height

→ Required Worker Position

→ Platform Level

→ Tower Configuration

→ Stair Arrangement

→ Base & Outrigger Arrangement

15. Product Specification Summary

16. Related DragonStructure Categories

Mobile Access Structure

This is the primary category for this product because its main function is to create a movable elevated access and working structure.

https://www.dragonstructure.com/Mobile-Access-Structure-pl07055276.html

Working Platform Structure

The tower also contains multiple elevated working platforms used during installation.

https://www.dragonstructure.com/Working-Platform-Structure-pl06055276.html

17. Original DragonTruss Product

This DragonStructure page is developed from an existing DragonTruss scaffold product and presents it from the structure and installation-access perspective.

Original Product

Aluminum Tower Mobile Portable Double Scaffolding with Step Ladder 5.22m

Original Product URL

https://www.dragontruss.com/Aluminum-Tower-Mobile-Portable-Double-scaffolding-with-step-ladder-5-22m-pd46235754.html

For detailed product supply information and the original scaffold product, visit the DragonTruss page above.

18. DragonStructure vs. DragonTruss

The two pages should intentionally answer different questions.

DragonTruss

The original page is the product and supply source:

What scaffold product can we manufacture and supply?

DragonStructure

This page answers:

How is this scaffold configured as a mobile installation access structure for an outdoor box truss lighting frame?

Therefore the DragonStructure page focuses on:

Mobile Base

→ Outriggers

→ Tower Frames

→ Bracing

→ 45° Stair Access

→ Working Platforms

→ Elevated Truss Installation Position

This prevents the new page from becoming a rewritten copy of the original DragonTruss product.

19. Engineering and Safety Boundary

Confirmed Product Facts

Based on the supplied BOQ and product information:

• the tower uses 1.35m-wide scaffold frames;

• 5-rung and 4-rung frame modules are included;

• the tower uses horizontal and diagonal bracing;

• four 6-inch wheels with adjustable legs are included;

• four sets of 3m long outriggers are included;

• two 6-rung 45° stairs are included;

• two standard platforms and one trap-door platform are included;

• guardrails and a toe board are included;

• the supplied application shows the tower being used beside an outdoor box truss structure;

• the original DragonTruss product is identified as a 5.22m mobile scaffolding product.

Not Established by the Supplied Information

The supplied BOQ does not establish:

• allowable platform load;

• maximum number of workers;

• allowable wind speed;

• wind rating;

• required ballast;

• maximum permitted tower height under specific site conditions;

• ground-bearing requirements;

• structural safety factor;

• certification;

• regulatory compliance;

• engineering approval.

These values should not be invented or inferred from the component list.

For outdoor applications, actual setup and use must consider the site conditions and applicable working-at-height requirements.

20. Information Needed for a Customized Access Tower

For a different box truss or event structure, please provide:

• overall truss dimensions;

• truss height;

• required installation height;

• required working-platform height;

• available ground space;

• indoor or outdoor application;

• site surface condition;

• required number of working levels;

• preferred access direction;

• truss drawing or project drawing;

• site photographs;

• existing scaffold components, if the tower needs to integrate with existing inventory.

We can then consider the access structure according to:

Project Geometry → Working Position → Access Height → Tower Modules → Stair & Platform Layout → Base / Outrigger Configuration