Engineering standards and codes of practice
Codes of practice and regulations in our library, and the design standards each calculator is built on. Paid standards (for example Singapore Standards and Eurocodes) are listed with their publisher only — we do not distribute them.
Codes of practice and design standards
🇸🇬 Singapore
- Code of Practice on Coastal Protection (First Edition, June 2026)
- Code of Practice on Sewerage and Sanitary Works (3rd Edition, March 2025)
- Code of Practice on Surface Water Drainage (7th Edition, Dec 2018, with Addendum No. 3, Apr 2025)
- Appendices for Surface Water Drainage
Regulations and circulars
🇸🇬 Singapore
- Sewerage and Drainage (Surface Water Drainage) Regulations
- Sewerage and Drainage Act 1999
- PUB Circular: Addendum No. 3 to the Code of Practice on Surface Water Drainage (16 April 2025)
- PUB Circular: Lodgement Scheme for ABC Waters Submissions (2 December 2024)
Standards used by our calculators
| Standard / basis | Calculators |
|---|---|
| Elastic beam theory (statics) — not a design code check | 2 (1 live) |
| Eurocode 2 (SS EN 1992-1-1 + Singapore NA) | 4 (0 live) |
| Eurocode 3 (SS EN 1993-1-1 + Singapore NA) | 5 (0 live) |
| Eurocode 3 Part 1-8 (SS EN 1993-1-8 + Singapore NA) | 2 (0 live) |
| Eurocode 7 (SS EN 1997-1 + Singapore NA) | 10 (0 live) |
| Exact SI / Imperial definitions (NIST SP 811) | 1 (1 live) |
| Plane trigonometry | 1 (0 live) |
| Quantity calculation — no design code | 5 (1 live) |
| Standard amortisation formula | 1 (0 live) |
| Standard discounted cash flow | 1 (0 live) |
| To be confirmed at verification | 13 (0 live) |
| PUB COPSWD 7th Ed. (Add. 3) · PUB Engineering Procedures for ABC Waters Design Features (2024 Ed.) | 5 ABC Waters modules (under technical review) |