20/100 Corrugated Panel Dimensions, Rib Spacing, Gauge Range, and Span Tables
20/100 Corrugated Panel Dimensions, Rib Spacing and Span Tables
20/100 Corrugated panels are a heavy-duty metal roofing and wall cladding profile used in commercial, agricultural, and industrial construction. The profile features a deep corrugated wave pattern that increases structural strength and improves water drainage performance.
The designation 20/100 refers to the panel geometry:
- 20 mm rib height
- 100 mm rib pitch
This deeper corrugation compared with smaller profiles provides improved load-bearing capacity, making it suitable for larger buildings and harsher weather conditions.
20/100 corrugated panels are commonly used for:
• warehouses
• agricultural buildings
• factories
• industrial roofing
• wall cladding systems
• storage buildings
These panels are manufactured using roll forming machines that shape steel coil into the repeating sinusoidal corrugated profile. Because roll forming is a continuous manufacturing process, panels can be produced in custom lengths that match roof dimensions.
This guide provides a detailed technical overview of 20/100 corrugated panel dimensions, rib spacing, steel gauges, coil width requirements, and engineering span tables used by manufacturers, contractors, engineers, and roll forming machine buyers.
What is a 20/100 Corrugated Panel
A 20/100 corrugated panel is a metal roofing sheet formed with a repeating sinusoidal corrugated wave pattern.
The deeper corrugation height increases the stiffness of the sheet and improves structural performance when spanning between roof supports.
Corrugated roofing systems are widely used because they offer several advantages:
• high strength-to-weight ratio
• simple manufacturing process
• efficient water drainage
• low installation cost
• durable roofing performance
Corrugated sheets remain one of the most widely used roofing profiles in global construction markets.
Standard 20/100 Corrugated Panel Dimensions
20/100 corrugated panels are manufactured in several standard widths depending on the number of corrugations across the sheet.
Typical dimensions include:
Specification
Typical Measurement
Coverage Width
800 – 1000 mm
Overall Width
860 – 1080 mm
Rib Height
20 mm
Rib Pitch
100 mm
Number of Corrugations
8 – 10
Panel Length
Custom roll formed
Effective coverage width depends on panel overlap during installation.
Corrugation Rib Layout
The corrugation rib layout consists of evenly spaced sinusoidal waves that increase the structural stiffness of the panel.
Typical features include:
• smooth wave profile
• uniform corrugation spacing
• continuous rib pattern
Typical dimensions:
Feature
Measurement
Corrugation height
20 mm
Corrugation pitch
100 mm
Corrugation spacing
100 mm center to center
This deeper rib profile improves structural strength compared with smaller corrugated profiles.
20/100 Corrugated Panel Cross Section Dimensions
The cross section of corrugated panels is formed gradually using a series of roll forming stations.
Typical cross section characteristics include:
Corrugation height
20 mm
Corrugation pitch
100 mm
Panel overlap
1 corrugation
Panel coverage width
Typically 800 – 1000 mm depending on panel design.
The side overlap ensures water cannot penetrate between adjacent panels.
Steel Gauge Range for 20/100 Corrugated Panels
Corrugated panels can be manufactured using several steel thicknesses depending on structural requirements.
Common gauges include:
Gauge
Thickness
Typical Application
28 gauge
0.0157 in
Residential roofing
26 gauge
0.0179 in
Agricultural buildings
24 gauge
0.0239 in
Commercial roofing
22 gauge
0.0299 in
Industrial buildings
Thicker gauges provide improved strength and allow longer spans between structural supports.
20/100 Corrugated Panel Span Tables
Span tables determine how far panels can span between roof supports.
Span capability depends on several factors including:
• steel thickness
• panel width
• corrugation depth
• wind loads
• snow loads
Typical span ranges include:
Gauge
Roof Span
28 gauge
2 – 3 ft
26 gauge
3 – 4 ft
24 gauge
4 – 5 ft
22 gauge
5 – 6 ft
Exact spans must be determined by engineering calculations depending on building design.
Coil Width Requirements for 20/100 Corrugated Panels
Steel coil must be slit to the correct width before entering the roll forming machine.
Typical coil widths include:
Panel Coverage
Coil Width
800 mm panel
860 – 880 mm coil
914 mm panel
980 – 1000 mm coil
1000 mm panel
1060 – 1080 mm coil
Additional width is required to account for the corrugation forming process.
Correct coil width ensures accurate panel coverage.
Materials Used for 20/100 Corrugated Panels
Corrugated roofing panels can be manufactured using several metal materials depending on environmental conditions and building requirements.
Common materials include:
Galvanized steel
Galvalume steel
Aluminum
Painted steel
Galvalume steel is widely used because of its excellent corrosion resistance and durability in roofing applications.
Industries Using 20/100 Corrugated Panels
20/100 corrugated panels are widely used across many industries due to their durability and simple manufacturing process.
Common applications include:
Industrial buildings
Agricultural structures
Warehouses
Factories
Farm buildings
Storage facilities
These panels are commonly used in markets where durable and cost-effective roofing solutions are required.
Roll Forming Machines Used to Produce 20/100 Corrugated Panels
20/100 corrugated panels are produced using roll forming machines designed specifically for corrugated profiles.
Typical machine specifications include:
Number of forming stations
16 – 22 stations
Roller material
Hardened tool steel
Machine speed
20 – 40 meters per minute
Drive system
Chain drive or gearbox drive
Cutting system
Hydraulic shear or flying shear
Control system
PLC automatic length control
Corrugated roll forming machines are among the most common roofing panel machines used worldwide.
Installation Considerations
Correct installation is essential to ensure the performance of corrugated roofing systems.
Important installation factors include:
Correct panel overlap
Proper fastener spacing
Minimum roof slope requirements
Sealing of panel joints
Panels are typically overlapped by one corrugation to prevent water penetration.
Engineering Load Considerations
When designing corrugated roofing systems, engineers must consider structural factors including:
Wind uplift loads
Snow loads
Roof slope requirements
Thermal expansion
Corrugated panels are commonly installed over purlins or roof decking depending on building design.
Common Manufacturing Problems
Manufacturing problems can occur if roll forming machines are not properly adjusted.
Common problems include:
Uneven corrugation spacing
Panel waviness
Incorrect corrugation height
Edge distortion
These issues can usually be corrected by adjusting roll tooling alignment and forming pressure.
Frequently Asked Questions
What does 20/100 corrugated mean?
It refers to the corrugation geometry: 20 mm rib height and 100 mm rib pitch.
What gauges are used for 20/100 corrugated panels?
Common gauges include 28, 26, 24, and 22 gauge steel.
What is the coverage width of 20/100 corrugated sheets?
Coverage width typically ranges between 800 mm and 1000 mm depending on the panel design.
Where are 20/100 corrugated panels used?
They are widely used for industrial buildings, warehouses, agricultural structures, and commercial roofing.
Are 20/100 corrugated panels stronger than smaller corrugated profiles?
Yes. The deeper 20 mm corrugation increases the structural strength of the sheet.
Conclusion
20/100 corrugated panels are a durable metal roofing and cladding profile designed for industrial and agricultural buildings. Their deeper corrugation profile provides increased structural strength and improved load-bearing capability compared with smaller corrugated sheets.
Understanding 20/100 corrugated panel dimensions, rib spacing, steel gauges, coil width requirements, and span capabilities is essential for contractors, manufacturers, and engineers working with corrugated metal roofing systems.
Roll forming machines designed for 20/100 corrugated panel production allow manufacturers to produce high-quality roofing sheets efficiently while maintaining precise profile dimensions.