1. What Is a Pyramid Roof Structure?

A pyramid roof is different from a simple flat roof or conventional two-slope A-frame roof.

Viewed from above, this system begins with a roughly square:

20m × 20m roof footprint

but the roof surface does not remain on one horizontal plane.

Instead, the roof rises toward an elevated central zone, producing inclined roof planes.

Conceptually:

Four Outer Roof Edges

↓

Inclined Roof Members

↓

Elevated Central Apex / Ridge Zone

This creates the characteristic pyramid profile.

For a large temporary event roof, this geometry means the structure should not be understood as simply:

four towers + four horizontal trusses.

The roof itself contains another structural layer above the perimeter.

2. Overall Roof Geometry

The confirmed nominal footprint is:

20m × 20m

giving a nominal covered plan area of approximately:

400m².

The basic geometry can therefore be divided into two directions:

20m width

×

20m depth

But the complete roof is three-dimensional.

It contains:

1. an outer perimeter;

2. internal long-span cross beams;

3. inclined roof members;

4. an elevated pyramid top;

5. PVC roof covering.

This is the first important distinction:

20 × 20m describes the footprint, not the complete geometry of the roof.

3. The Roof Can Be Understood as Five Structural Layers

For structural breakdown purposes, this roof can be divided into five main functional groups.

Layer A — Supporting Structure Below

The original configuration was developed for integration with a Ringlock support system.

The Ringlock structure provides the supporting framework below the aluminum roof.

It is therefore useful to distinguish:

Steel Ringlock Support

from:

Aluminum Roof Structure

They belong to one complete temporary structure, but they perform different structural functions.

Layer B — Aluminum Perimeter Roof Frame

At roof level, the outside boundary is formed by aluminum truss members.

This establishes the approximately:

20m × 20m outer roof geometry.

The perimeter creates the basic frame from which the internal roof structure is organized.

Layer C — Three Long-Span Cross Beams

Inside the roof are:

3 main long-span beams.

These are one of the most important characteristics of this particular design.

Instead of treating the full 20 × 20m area as one unsupported open square, the three internal beams subdivide the roof.

Conceptually:

20m Roof Depth

↓

Cross Beam

↓

Roof Bay

↓

Cross Beam

↓

Roof Bay

↓

Cross Beam

↓

Roof Bay

The exact spacing should follow the actual project drawing rather than being inferred from the nominal roof dimensions.

4. Why the Three Main Beams Matter Structurally

The three beams are not merely additional pieces added to fill the roof.

They establish the internal structural rhythm of the 20m × 20m roofing system.

A large roof needs intermediate structural lines to organize the roof members above.

The three long-span beams therefore perform an important geometric role:

Large 20 × 20m Roof Area

↓

Divided by Three Main Structural Lines

↓

Smaller Roof Bays

↓

Inclined Secondary Roof Members

↓

Continuous Pyramid Roof Surface

This is a much better way to understand this product than simply calling it a “20m roof truss.”

The system is actually a primary-and-secondary roof framework.

5. Primary and Secondary Roof Structure

This distinction is especially useful when reading the structure.

Primary Structure

The major structural framework consists of:

• outer perimeter trusses;

• three long-span cross beams;

• support interfaces below.

Secondary Roof Structure

The upper pyramid geometry is completed by:

• inclined roof trusses/members;

• apex/ridge connection zones;

• intermediate roof framing required by the canopy layout.

Roof Covering

Above this framework sits the:

PVC canopy.

So the complete hierarchy becomes:

Supporting System

↓

Primary Aluminum Frame

↓

Secondary Inclined Roof Frame

↓

PVC Roof Cover

That hierarchy is the core structural logic of this product.

6. The Pyramid Is Built Above the Main Beam Level

One of the easiest mistakes when looking at a large event roof is to think that all the aluminum truss members belong to the same horizontal frame.

They do not.

The lower roof frame establishes the principal horizontal geometry.

The pyramid structure then rises above it.

Conceptually:

                 APEX
                  ▲
                 / \
                /   \
       Inclined Roof Members
              /       \
             /         \
      =====================
        Main Beam Level
      =====================
             │
       Support Structure
             │
           Ground

This means the roof has both:

horizontal span

and

vertical rise.

The pyramid shape is created by the relationship between these two.

7. The Central Apex Is a Geometric Organizer

At the top of a pyramid roof, multiple inclined roof lines converge toward an elevated central region.

That region is structurally important because it organizes the geometry of the roof slopes.

It can be understood as the point or zone where:

inclined members from different roof directions

come together to create:

one continuous pyramid roof profile.

The exact connection hardware and apex detail should follow the supplied fabrication drawing.

The source product confirms the pyramid roof form but does not provide enough verified information to describe a specific apex connector geometry, so no unconfirmed connector specification should be invented.

8. CS389 × 389 Square Truss

The original product identifies the principal aluminum truss as:

CS389 × 389 square truss

with:

50mm × 3.0mm main chords.

This means the main roof framework is based on an aluminum box-truss section approximately:

389mm × 389mm

in cross section.

The confirmed main-chord tube specification is:

Ø50 × 3mm.

For this DragonStructure page, these dimensions should be treated as:

confirmed component specifications of this supplied configuration

rather than as proof of a particular allowable span or hanging load.

The truss size tells us what was used.

It does not, by itself, establish what load every future 20m roof may safely carry.

That distinction is important.

9. 20m Span Does Not Mean One 20m Truss Piece

The phrase 20m long-span beam describes the assembled structural span.

It does not mean one aluminum truss is manufactured and transported as a single 20m-long component.

The long-span beam is assembled from modular aluminum truss sections.

Conceptually:

Truss Section

Truss Section

Truss Section

Connection

=

Long Assembled Beam

This modularity is fundamental to temporary event structures.

It allows a large roof to be:

• transported in manageable sections;

• assembled on site;

• dismantled after the event;

• reconfigured for other structures where compatible.

10. The Three-Beam Layout Creates Roof Bays

Once three main cross beams are introduced inside the perimeter, the roof can be understood as a series of bays.

Instead of:

one 20 × 20m empty opening

we get:

Perimeter

→ Roof Bay

→ Main Beam

→ Roof Bay

→ Main Beam

→ Roof Bay

→ Main Beam

→ Roof Bay

→ Perimeter

This subdivision gives the inclined roof members intermediate structural lines to connect to.

That is why the three-beam configuration is one of the defining structural features of this product.

11. Inclined Roof Members Create the Pyramid

The main cross beams alone would still create essentially a flat structural grid.

The pyramid appears only when inclined roof members are introduced.

These members rise from lower roof lines toward the central elevated roof zone.

The basic relationship becomes:

Horizontal Primary Frame

Inclined Secondary Frame

=

Pyramid Roof

This creates several sloping roof planes instead of one flat canopy.

12. From Structural Skeleton to Roof Surface

The aluminum truss framework itself is only the skeleton.

To become a functional temporary roof, it needs a roof covering.

The source specifies:

PVC canopy material.

Therefore:

Aluminum Truss Skeleton

↓

Roof Covering Interface

↓

PVC Canopy

↓

Covered Event Area

The canopy follows the geometry established by the aluminum framework.

That is another reason the pyramid geometry must be considered as a complete system: changing the roof shape changes not only the aluminum members but also the canopy geometry.

13. Why This Is Not Simply a Flat Roof with a Decorative Peak

The pyramid top should not be understood as decorative cladding added above an otherwise complete flat roof.

The inclined members are part of the roof framing itself.

The roof form is generated structurally:

Perimeter Frame

↓

Main Cross Beams

↓

Inclined Roof Members

↓

Elevated Central Zone

↓

PVC Canopy

So the pyramid profile is inherent to the roof configuration.

It is not simply a cosmetic cap placed on top.

14. Relationship Between the Aluminum Roof and Ringlock Support

The original product specifically identifies the roof as being developed for a Ringlock System.

That does not mean the aluminum roof becomes a Ringlock roof.

It is better understood as a hybrid relationship:

Upper Structure

Aluminum Roof Truss

Lower Structure

Steel Ringlock Supporting System

Interface

Connection / Support Zone

Together:

Ringlock Support

↓

Roof-Level Interface

↓

Aluminum Perimeter + Main Beams

↓

Pyramid Roof Framing

↓

PVC Canopy

This is why the product also fits naturally within:

Ringlock + Aluminum Structure

15. Why Separate the Roof from the Ringlock Base?

For DragonStructure, separating these two systems is useful because a customer may already have part of the supporting structure.

For example, the customer may have:

Ringlock inventory

but need:

a new aluminum roof system.

Or the opposite may happen:

the required roof geometry is already known, but the support arrangement needs to be adapted to a different site.

Therefore the structure should be understood as two coordinated but distinguishable systems:

Roof System

and

Support System.

This makes customization and compatibility discussions much clearer.

16. Roof Support Interface

Between the lower supporting structure and the aluminum roof is an interface zone.

This interface transfers the roof geometry into the supporting structure below.

From a product-breakdown perspective:

Aluminum Roof

↓

Roof Support / Connection Interface

↓

Ringlock Supporting Structure

The exact connection configuration must follow the project drawing and compatible components.

It should not be assumed that any Ringlock tower can automatically support this roof simply because the product title says “for Ringlock System.”

Compatibility and project suitability are separate questions.

17. The Roof Is Modular in Two Directions

The modularity of this system works in more than one direction.

Horizontal Modularity

Individual truss sections combine to create:

• 20m perimeter spans;

• long-span internal beams.

Roof-Slope Modularity

Inclined truss sections combine to create:

• pyramid roof planes;

• ridge/apex geometry.

So the system is not merely:

modular length.

It is:

modular length + modular roof geometry.

That is what allows standardized aluminum truss components to create a much larger three-dimensional temporary structure.

18. Structural Breakdown Summary

The complete roof can therefore be read from bottom to top:

1. Support System

Ringlock-based support structure in the original configuration.

2. Roof Support Interface

Connection between steel support and aluminum roof.

3. Perimeter Aluminum Frame

Defines the 20 × 20m outer roof footprint.

4. Three Long-Span Main Beams

Subdivide and organize the large roof area.

5. Inclined Roof Members

Create the sloping roof planes.

6. Central Apex / Ridge Zone

Brings the inclined roof geometry together.

7. PVC Canopy

Forms the final roof covering.

In shorthand:

Ringlock

→ Interface

→ 20 × 20m Perimeter

→ 3 Main Cross Beams

→ Inclined Roof Members

→ Pyramid Apex

→ PVC Canopy

This is the essential structure breakdown of the product.

19. Why a Pyramid Roof Instead of an A-Frame Roof?

Structurally, these are two different geometric systems.

A typical A-frame roof is mainly organized around:

two roof slopes

meeting along:

one longitudinal ridge.

A pyramid roof distributes the roof geometry toward a more centralized elevated zone.

Conceptually:

A-Frame

Left Slope → Ridge ← Right Slope

Pyramid

Multiple Roof Directions → Central Elevated Zone

Therefore the pyramid roof creates a distinctly different three-dimensional framework.

This does not mean one geometry is universally stronger or better.

The appropriate roof type depends on:

• required footprint;

• stage arrangement;

• equipment layout;

• roof covering;

• support configuration;

• site conditions;

• project requirements.

20. Why the 20x20m Footprint Matters

At approximately 400m² of plan coverage, this is already a large temporary roof.

That changes the nature of the structure.

A smaller roof may be understood relatively easily as:

four supports + perimeter + roof members.

At 20 × 20m, however, internal structural organization becomes much more visible and important.

This is exactly why the three long-span beams deserve to appear in the product title.

They explain how the large square roof is internally divided.

21. Three Main Beams vs. One Open Span

A useful way to visualize the design is:

Without Internal Main Beams

One very large 20 × 20m structural field

With Three Main Beams

Several smaller roof fields organized inside the same 20 × 20m footprint

That does not allow us to claim a particular increase in load capacity without engineering calculations.

But geometrically, it clearly explains why the three beams exist:

They create intermediate primary structural lines for the pyramid roof framework.

This is a confirmed structural observation, not a calculated load conclusion.

22. PVC Roof Canopy

The original configuration uses a:

PVC roof canopy.

The canopy completes the weather-covering envelope of the roof.

Its geometry needs to correspond with:

• perimeter dimensions;

• roof slopes;

• central apex/ridge geometry;

• panel division;

• attachment arrangement.

Therefore a custom change from, for example:

20 × 20m

to:

18 × 20m

should not be understood as merely shortening a few aluminum trusses.

The roof-cover geometry may also need to change.

23. Customization Variables

The 20 × 20m configuration should be treated as a reference structural arrangement, not a universal roof package.

This is where DragonStructure should stop treating the product as a fixed SKU and start treating it as a structural reference configuration.

24. What Can Stay the Same When the Roof Size Changes?

Not every customized roof requires inventing an entirely new structural concept.

The general logic may remain:

Perimeter

Internal Main Beams

Inclined Roof Members

Apex

Canopy

while individual dimensions and quantities change.

For example, a different project may still use the same pyramid concept but change:

• width;

• depth;

• roof rise;

• number of bays;

• beam spacing;

• truss lengths;

• canopy dimensions.

This is the reusable structural principle behind the product.

25. What Cannot Be Copied Directly?

The following should not automatically be copied from this 20 × 20m configuration into another project:

• main-beam quantity;

• main-beam spacing;

• truss section;

• roof rise;

• apex geometry;

• support-tower arrangement;

• connection details;

• hanging points;

• ballast/foundation;

• allowable equipment loads;

• wind resistance.

Those depend on the actual project.

The product provides a useful structural reference, not a universal engineering template.

26. Suitable Applications

The source positions this type of large roof for applications such as major concerts, festivals and large outdoor event stages.

From a structural-function perspective, it can serve as a reference for:

• large concert roof structures;

• festival main-stage roofs;

• outdoor performance roofs;

• temporary event canopies;

• large square stage roofs;

• hybrid Ringlock + aluminum event structures.

Actual project suitability must still be verified against the intended equipment, environment and site conditions.

27. Existing Ringlock Equipment and Compatibility

A customer who already owns Ringlock components may ask:

“Can I keep my existing Ringlock support and buy only this aluminum pyramid roof?”

That is a reasonable starting question, but compatibility should not be assumed.

At minimum, the following information should be checked:

• existing Ringlock tower dimensions;

• tower height;

• bay dimensions;

• top support configuration;

• interface dimensions;

• existing drawings;

• component photographs;

• existing BOQ;

• intended roof position;

• project site conditions.

The fact that this reference product was developed for Ringlock integration does not mean it fits every Ringlock inventory.

28. Why This Belongs to Roof Support Structure

Although Ringlock appears in the original product title, the complete product's primary function is:

temporary overhead roof coverage.

Therefore, under DragonStructure's function-first classification logic, the primary category should be:

Roof Support Structure

rather than simply Ringlock Structure.

The aluminum/Ringlock material combination is a secondary classification.

So I recommend:

Primary Category: Roof Support Structure
Secondary System: Ringlock + Aluminum Structure

This keeps the site architecture clean:

Classify first by what the whole structure does; use material/system combination as a secondary way to understand it.

The approved DragonStructure Roof Support Structure page is specifically intended as the entry page for temporary roof support and hybrid canopy configurations.

29. Original DragonTruss Product

The original manufacturer/supply page is:

20x20m Large Span Pyramid Roof Truss System with 3 Long-Span Beams for Ringlock System – DragonTruss

The original page confirms the 20 × 20m footprint, pyramid roof form, three long-span beams, CS389 × 389 aluminum square truss, Ø50 × 3mm main chords and PVC roof canopy.

The two websites answer different questions.

DragonTruss

PRODUCT + MANUFACTURING + SUPPLY

It presents the roof as a commercial aluminum truss system and provides the original product/supply context.

DragonStructure

STRUCTURE BREAKDOWN

It explains:

what the 20 × 20m pyramid roof actually consists of

and:

how perimeter trusses, three primary beams, inclined roof members, apex geometry, canopy and Ringlock support relate to each other.

30. Related Structural References

For other temporary roof-support configurations:

Roof Support Structure

For structures combining steel Ringlock support with an aluminum upper structure:

Ringlock + Aluminum Structure

The second link is especially relevant here because the approved internal-link library defines that category for aluminum roof/truss structures integrated with Ringlock bases and other mixed-material temporary structures.

31. Engineering / Verification Boundary

The supplied source confirms:

• 20m × 20m nominal roof footprint;

• approximately 400m² nominal plan coverage;

• pyramid roof configuration;

• three long-span main beams;

• CS389 × 389 square aluminum truss;

• Ø50 × 3.0mm main chords;

• PVC roof canopy;

• intended integration with a Ringlock system.

However, the source page also contains promotional statements about load capacity and structural performance that are not accompanied in the supplied material by engineering calculations or verified project-specific load data. Therefore, I would not copy those claims into DragonStructure as engineering conclusions.

This page does not establish:

• allowable roof load;

• allowable point load;

• allowable hanging load on each beam;

• maximum LED load;

• maximum line-array load;

• allowable deflection;

• wind rating;

• wind speed;

• ballast requirement;

• anchoring requirement;

• foundation requirement;

• safety factor;

• engineering certification;

• local-code compliance;

• approval for a specific site.

In particular:

Three long-span beams should not be translated into “higher allowable hanging load” unless that conclusion is supported by verified calculations for the actual configuration.

What we can safely say is:

The three beams form primary internal structural lines that subdivide and organize the large 20 × 20m pyramid roof.

That is a structural breakdown, not an invented engineering claim.

32. Information Needed to Adapt This Roof

To develop a new roof based on this configuration, provide:

• required roof width;

• required roof depth;

• required clear height;

• preferred apex/roof height;

• stage dimensions below;

• indoor or outdoor use;

• intended event type;

• existing Ringlock system, if any;

• Ringlock bay dimensions;

• support-tower arrangement;

• existing component photographs;

• existing BOQ/drawings;

• lighting equipment arrangement;

• LED screen arrangement;

• sound-system arrangement;

• required hanging positions;

• roof-cover requirement;

• site surface information;

• project location;

• applicable project requirements.

The configuration can then follow:

Required Covered Area

→ Roof Footprint

→ Primary Perimeter

→ Main Cross-Beam Layout

→ Roof Bay Division

→ Inclined Pyramid Members

→ Apex Geometry

→ Canopy Geometry

→ Support Interface

→ Ringlock / Other Supporting Structure

→ Final Project Configuration

Structure Classification

Primary Function: Large Temporary Event Roof
Primary Category: Roof Support Structure
Secondary Category: Ringlock + Aluminum Structure
Roof Type: Pyramid Roof
Nominal Footprint: 20m × 20m
Nominal Plan Coverage: Approximately 400m²
Main Roof Material: Aluminum Truss
Main Truss Section: CS389 × 389 Square Truss
Main Chord: Ø50 × 3.0mm
Primary Internal Members: 3 Long-Span Cross Beams
Secondary Structure: Inclined Pyramid Roof Members
Upper Geometry: Elevated Central Apex / Ridge Zone
Roof Covering: PVC Canopy
Original Lower Support Concept: Ringlock System
Core Structural Logic: Support System → Roof Interface → 20 × 20m Perimeter → 3 Main Cross Beams → Roof Bays → Inclined Roof Members → Pyramid Apex → PVC Canopy