ontwerpcodes

Ontwerpcodes are formal documents that set out rules, criteria and methods for the design of structures, products or systems to ensure they meet safety, performance and durability requirements. They are developed and published by national, regional or international standardization bodies and can be mandatory by law or voluntarily adopted by industry.

In engineering and construction, design codes cover topics such as loads and load combinations, material strengths, tolerances, serviceability, durability, fire resistance and reliability. They provide approved design methods, calculation procedures, testing requirements, quality control and documentation standards. Codes are often used as benchmarks during the early design phase as well as for final verification and documentation.

European and international codes play a central role in many sectors. In structural engineering, the Eurocodes form a core set of design standards used across Europe, with national annexes that adapt them to local conditions. National bodies—such as the Dutch institute for standards—often publish accompanying guidelines or amendments that align with or supplement these codes.

Usage and regulatory context can vary by jurisdiction. Some ontwerpcodes are legally binding for specific projects or applications, while others are voluntary but widely adopted to ensure consistency and market acceptance. Designers, manufacturers and regulators rely on these codes to demonstrate compliance, safety and performance, and to facilitate interoperability across markets. Codes are periodically updated to reflect new research, advances in materials and technology, and evolving safety or sustainability goals. Keeping up to date with the latest editions is a standard professional practice.