Design codes
Design codes and national annexes
Which codes each program checks against, and for which countries. A ✓ means a manual, a sample report or the release notes show it. A ✗ means it is not included. “Ask us” means it is not documented yet, so we do not claim it.
NLNEN-ENBENBN ENUKBS ENDEDIN ENITUNI ENUSANSI/AISC 360-16
Status 28 September 2026. Sources: the manuals, the sample reports and the release notes.
1Codes
Open “Where each mark comes from” under the table for the source of every ✓ and ✗.
Codes per program
| Code | XFEM4U | XFrame2D | XBeam2D | XConstruct |
|---|---|---|---|---|
| Basis and actions | ||||
| EN 1990Basis of design, load combinations | Covered | Covered | Covered | Covered |
| EN 1991-1-3, EN 1991-1-4Snow and wind loads, generated | Covered | Covered | ask us | ask us |
| Concrete | ||||
| EN 1992-1-1Concrete: general rules and buildings | Covered | ask us | Covered | Covered |
| EN 1992-1-2Concrete: fire design | ask us | ask us | ask us | Covered |
| ANSI/ACI 318-19US concrete code | Covered | ask us | ask us | ask us |
| Steel | ||||
| EN 1993-1-1Steel: general rules and buildings | Covered | Covered | Covered | Covered |
| EN 1993-1-2Steel: fire design | Covered | Covered | Covered | Covered |
| EN 1993-1-8Steel: joints | Covered | Covered | ask us | Covered |
| ANSI/AISC 360-16US steel specification, direct analysis method | Covered | ask us | ask us | ask us |
| Timber | ||||
| EN 1995-1-1Timber: general rules and buildings | Covered | Covered | Covered | Covered |
| Masonry | ||||
| EN 1996-1-1Masonry: general rules | ask us | ask us | ask us | Covered |
| NPR 9096-1-1Masonry, Dutch simplified rules: cavity wall under wind | ask us | ask us | ask us | Covered |
| Geotechnics | ||||
| EN 1997-1 · NEN 9997-1Geotechnics: pile bearing capacity from CPTs | ask us | ask us | ask us | Covered |
| Dutch rules | ||||
| NEN 8700Existing structures: partial factors of Table A.1.2 | Covered | Covered | Covered | Covered |
| NPR 9998Induced earthquakes in the Netherlands: response spectrum | Covered | ask us | ask us | ask us |
✓covered✗not coveredask usnot documented yet, so we do not claim it
Where each mark comes from
- EN 1990
- XFEM4U sample report (Nov 2022)XFrame2D sample report (Nov 2022)XBeam2D sample report (Nov 2022)XConstruct sample report (Nov 2022)
- EN 1991-1-3, EN 1991-1-4
- XFEM4U manual · release notes 2027-01-01 (23 Mar 2026)XFrame2D sample report (Nov 2022)
- EN 1992-1-1
- XFEM4U manual · release notes 2027-01-01 (23 Mar 2026)XBeam2D sample report (Nov 2022)XConstruct sample report (Nov 2022) · sample report (Nov 2022) · sample report (Nov 2022)
- EN 1992-1-2
- XConstruct sample report (Nov 2022) · manual
- ANSI/ACI 318-19
- XFEM4U confirmed by Struct4U (Sep 2026)
- EN 1993-1-1
- XFEM4U sample report (Nov 2022)XFrame2D manual · release notes 2027-03-01 (19 Jun 2026)XBeam2D release notes 2027-03-01 (19 Jun 2026)XConstruct sample report (Nov 2022) · release notes 2026-07-01 (3 Dec 2025)
- EN 1993-1-2
- XFEM4U manual · release notes 2027-04-01 (10 Jul 2026)XFrame2D release notes 2027-06-01 (13 Aug 2026)XBeam2D release notes 2027-05-01 (13 Aug 2026)XConstruct struct4u.com · release notes 2027-03-01 (15 May 2026)
- EN 1993-1-8
- XFEM4U manual · release notes 2027-01-01 (23 Mar 2026)XFrame2D struct4u.com · release notes 2027-01-01 (12 Jan 2026)XConstruct sample report (Nov 2022) · sample report (Nov 2022)
- ANSI/AISC 360-16
- XFEM4U sample report (Nov 2022) · manual
- EN 1995-1-1
- XFEM4U struct4u.com · release notes 2027-01-01 (23 Mar 2026)XFrame2D sample report (Nov 2022)XBeam2D manual · release notes 2027-01-01 (12 Jan 2026)XConstruct struct4u.com · release notes 2027-03-01 (15 May 2026)
- EN 1996-1-1
- XConstruct struct4u.com · release notes 2026-06-01 (24 Aug 2025)
- NPR 9096-1-1
- XConstruct struct4u.com
- EN 1997-1 · NEN 9997-1
- XConstruct release notes 2027-03-01 (15 May 2026)
- NEN 8700
- XFEM4U manualXFrame2D release notes 2026-01-01 (17 Jun 2025)XBeam2D manualXConstruct release notes 2026-06-01 (24 Aug 2025)
- NPR 9998
- XFEM4U manual
XSpreadsheets
XSpreadsheets builds XFrame2D and XFEM4U models from Excel. Those models are calculated and checked in XFrame2D or XFEM4U, so the columns of those programs apply.
2Annexes
National annexes
You choose the country in the program. The annex applies to the Eurocode parts that program covers.
| Program | NLNEN-EN | BENBN EN | UKBS EN | DEDIN EN | ITUNI EN | ESUNE-EN | PTNP EN |
|---|---|---|---|---|---|---|---|
| XFEM4U | Covered | Covered | Covered | Covered | Covered | Not covered | Not covered |
| XFrame2D | Covered | Covered | Covered | Covered | Covered | Not covered | Not covered |
| XBeam2D | Covered | Covered | Covered | Covered | Covered | Not covered | Not covered |
| XConstruct | Covered | Not covered | Not covered | Not covered | Not covered | Not covered | Not covered |
- The XConstruct manual lists the Dutch annex only.
- The latest Dutch annex to EN 1992-1-1, NEN-EN 1992-1-1+
C2:2011+ A1:2015/ NB+ A1:2020+ A2:2025, is in XFEM4U and XBeam2D from version 2027-01-01 and in XConstruct from version 2026-07-01. - The English XFrame2D sample report uses the German annex; the Dutch one uses the Dutch annex.
- Spanish and Portuguese annexes are not included.
Program languages
The programs run in English, Dutch, German, Spanish, Italian, Norwegian and Portuguese.
3Dutch rules
Dutch rules for existing buildings, earthquakes and piles
- NEN 8700
- For assessing an existing structure, the lower partial load factors of NEN 8700 Table A.1.2, in all four programs. The profile library includes the old steel profiles DIN, DIE, DIL and DIR.
- NPR 9998
- For induced earthquakes, XFEM4U uses the response spectrum of NPR 9998: it derives the natural frequencies with the Rayleigh method and generates the seismic load cases in x and y, and the combinations with them.
- NEN 9997-1
- Pile bearing capacity in XConstruct follows NEN 9997-1:2025+
C1:2025 from version 2027-03-01, from imported CPTs.
4Not included
Not included
So you know before you download:
- National annexes other than those of the Netherlands, Belgium, the United Kingdom, Germany and Italy, such as the Spanish and Portuguese annexes.
- US codes other than ANSI/AISC 360-16 and ANSI/ACI 318-19.
- Seismic codes other than NPR 9998, such as EN 1998.
Check the code line in a real report.
The reports list the standards they apply, with edition and annex, before the first check.
Free download · first hour free · €100 welcome credit when you register · then pay per use · no credit card · Windows