The environmental regulation (Réglementation Environnementale 2020) was finalized and prepared for implementation during 2021. The CD-Reef V4 database was overhauled to include the new regulatory texts, calculation methods for life-cycle assessments (LCA), and carbon footprint thresholds that superseded the old RT2012 standards. 2. Enhanced Cloud and Multi-User Access
It is the primary tool used to avoid legal disputes by ensuring all project specifications follow the most current "rules of the art" ( règles de l'art ).
It provides full-text access to official legislative texts, eliminating the need to search multiple disparate government websites. Key Features (V4 Specifics) cd reef v4 cstb 2021
| Feature | DVD Reef 4 (as of 2014) | | :--- | :--- | | | More than 3,950 references | | Full-Text Documents | More than 3,120 | | Included Standards | 1,390 standards | | Search Functionality | Keyword search with filters (by title/ref., document type, destination) and a graphic assistant | | Additional Content | Access to "e-Cahiers du CSTB" website for previewing DTUs, including the ability to download full text | | Update Frequency | Quarterly, with an RSS feed to track news between updates |
was the breakthrough year. Results showed that V4 reduced wave heights at the shoreline by up to 62% during 100-year storm conditions—a 12% improvement over V3. Equally important, sediment transport behind the reef remained stable, preventing the "downstream erosion" common with older designs. Enhanced Cloud and Multi-User Access It is the
When a product holds a , it means the product has undergone rigorous testing for:
The is more than a product code; it is a legal and technical milestone in sustainable drainage. For any project requiring certified, high-load, high-storage underground water management, this combination remains the reference point. Results showed that V4 reduced wave heights at
is a fourth-generation resilient acoustic underlayment, primarily manufactured for use under cementitious and anhydrite screeds. Unlike traditional foam or rubber underlays, the "Reef" series utilizes a high-density recycled elastomer matrix, often incorporating granulated rubber bonded with polyurethane resins. The "V4" designation signifies the fourth version of this product line, incorporating improvements in compression resistance, thermal conductivity, and long-term creep behavior based on feedback from prior installations.
Users can filter by keyword, document type, structural element (e.g., roofing, foundations), or publication date.
#Construction #Architecture #CSTB #CivilEngineering #BuildingCodes #Compliance Option 2: Short & Punchy (Focus on Efficiency)
Access to NF EN standards and DTUs indispensable for executing structural works.