This calculator is designed to assist construction professionals in designing soil nail walls. It provides reliable and accurate calculations based on authoritative engineering standards.
Interactive Calculator
Results
Authoritative Data Source
All calculations are based on the guidelines provided by the CEDD Engineering Manual. All calculations are rigorously based on the formulas and data provided by this source.
The Formula Explained
Design Factor = L × S / H
Glossary of Variables
- L: Nail Length in meters.
- S: Nail Spacing in meters.
- H: Wall Height in meters.
Practical Example
How It Works: A Step-by-Step Example
Consider a wall with a height of 10 meters, nail length of 5 meters, and spacing of 2 meters. The design factor would be calculated as (5 × 2) / 10 = 1.
Frequently Asked Questions (FAQ)
What is a soil nail wall?
A soil nail wall is a construction technique used to reinforce slopes and excavations.
Why is nail spacing important?
Nail spacing affects the stability and strength of the wall.
Can this calculator be used for all soil types?
This calculator provides general guidance; specific soil conditions should be evaluated by a professional engineer.
What are the limitations of this tool?
It does not account for specific ground conditions and should be used as a preliminary guide.
Who should use this calculator?
Construction professionals and engineers involved in geotechnical and structural design.
Formula (LaTeX) + variables + units
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Design Factor = L × S / H
- T = property tax (annual or monthly depending on input) (currency)
- CEDD Engineering Manual — cedd.gov.hk · Accessed 2026-01-19
https://www.cedd.gov.hk/filemanager/eng/content_118/eg7_200803.pdf
Last code update: 2026-01-19
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