Light steel frame ISO 3 smaller geometry with no interior building support columns. Heavier ISO 3 larger geometries with internal support columns and heavier roof framing. If multi-story, floors are …

The six ISO CLM building construction categories and the associated ISO construction codes, from the least fire-resistive category to the most fire-resistive category, are as follows.

Jul 15, 2024 · Understanding the six ISO construction types is crucial when working on construction projects of any size. This classification system, established by the Insurance Services Office (ISO), …

Jun 2, 2025 · To standardize risk assessment, the Insurance Services Office (ISO) developed six main construction classifications. These are widely used in commercial and residential property insurance …

This job aid demonstrates the process of determining an ISO Construction Type in Policy Center for Commercial and Manufactured Home policies. The construction type selected will be based on ISO …

Details on ISO construction codes 1-6: Frame, Joisted Masonry, Non-Combustible, Fire Resistive. Building materials, roof types, anchorage explained.

Sep 19, 2021 · This comprehensive guide explains all six ISO construction classifications, what factors determine a building’s classification, how these types affect insurance rates, and practical …

Sep 16, 2025 · Each ISO classification aligns with specific IBC types, creating a framework that guides material selection and construction methods during project planning. The mapping reveals distinct …

Feel free to use this detailed list on your website to provide comprehensive information about the ISO construction types.

ISO defines six construction classes for commercial buildings Follow the links below to view the quick courses: