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Standards these tools do not replace

The calculators use textbook relationships. The standards below are where a design check actually lives. None of their text is reproduced here.

• BS EN ISO 19650 and the UK BIM Framework — information management. The file-name checker is a project convention, not the annex.
• BS EN 1992 and BS EN 1993 — concrete and steel section checks. Beam reactions stop at the moment.
• BS EN 1997 — geotechnical design. Pad pressure is average load over area only.
• BS 7671 — electrical installations. Voltage drop here is a resistivity estimate.
• BS 5975 — temporary-works procedure. This site cannot appoint a coordinator.
• CIRIA C766 — formwork pressure. The tool is the hydrostatic upper bound only.
• DMRB, sewer-adoption guidance and FEH — infrastructure drainage. Rational runoff is a screen.

Buy the standard or use the publisher’s official guidance before a figure leaves the site. Last checked 2 October 2026.

Last checked 2 October 2026. Original guidance. Standards text stays with the publisher.