Self Drilling Anchor Container Loading Guide (20GP Calculation Method)
Self Drilling Anchor Container Loading Guide (20GP Calculation Method)
Self drilling anchor (SDA) hollow bar systems are widely used in geotechnical engineering, including slope stabilization, tunneling, foundation reinforcement, and rock support applications. Because these products are supplied in steel bars and bundled form, container loading calculation is critical for export planning.
1. Why Container Loading Calculation Matters
Unlike general steel products, SDA hollow bars are:
- Heavy in weight per meter
- Supplied in bundled units
- Often handled by crane during loading/unloading
- Subject to strict payload limits in shipping containers
Therefore, container loading must consider not only weight, but also safety, stacking height, and handling conditions.
2. Typical SDA Bar Types and Bundle Configuration
The most common SDA hollow bar systems include:
- R25 Hollow Bar Anchor
- R32N Hollow Bar Anchor
- R38N Hollow Bar Anchor
- R51 Hollow Bar Anchor
- T30 Hollow Bar Anchor
- T40 Hollow Bar Anchor
- T52 Hollow Bar Anchor
- T76L / T76N Hollow Bar Anchor
Each type has different weight per meter and bundle quantity, which directly affects container loading capacity.
3. 20GP Container Loading Considerations
A standard 20GP container typically has a payload limit of around 25,000 kg. However, for heavy steel bundles, safe loading is usually reduced to avoid:
- Excess floor stress concentration
- Unsafe stacking height
- Forklift or crane handling risk
A safety factor of 85%–95% is commonly applied in engineering practice.
4. How SDA Loading is Calculated
The basic calculation formula is:
Bundle Weight = Weight per meter × Length × PCS per bundle
Then:
- Theoretical max bundles = Container payload ÷ bundle weight
- Recommended bundles = Theoretical max × safety factor
This ensures both efficiency and safe transport conditions.
5. Recommended Loading Practice
- Do not exceed 5 stacking layers for heavy bundles
- Use crane unloading for R51 / T76 systems
- Keep uniform bundle distribution inside container
- Avoid mixing different bar types in one container when possible
6. Use Our 20GP Loading Calculator
To simplify engineering estimation, you can use our online tool:
👉 SDA 20GP Container Loading Calculator
This tool automatically calculates:
- Bundle weight
- Recommended loading quantity
- Container utilization
- Safety-adjusted capacity
7. Self Drilling Anchor Systems by Rayon Machinery
Rayon Machinery is a professional manufacturer of self drilling anchor hollow bar systems, providing full solutions for geotechnical engineering projects worldwide.
👉 Website: https://rayonsda.com/
👉 Product Page: Hollow Bar Anchor System
8. Need Technical Support or Quotation?
If you need engineering support, product catalog, or quotation for SDA hollow bar systems, please contact our team.
Frequently Asked Questions (FAQ)
What is the payload of a 20GP container?
A standard 20GP container typically supports around 20–25 tons of payload depending on shipping line restrictions.
Why is safety factor needed in container loading?
Safety factors account for uneven load distribution, handling risk, and stacking limitations during transport.
Can different SDA bar types be mixed in one container?
It is possible, but not recommended, as different weights and bundle sizes may create uneven stacking and handling risks.
Rayon Machinery — Engineering Export Optimization Tool
