# Interiors ### Interior Assemblies For each building use category, C.Scale estimates quantity takeoffs for interior walls, ceilings, flooring, and door assemblies to fit the modeled building's overall area, based on precedent data from similar buildings. Interior wall, ceiling, and flooring takeoffs are area-based, and doors are counted by unit. Furniture, fixtures, and equipment (FF\&E) are not currently supported in the Interiors module. In **simple editing mode**, users choose a general type for each assembly category. C.Scale then generates a schematic material inventory for the project. In **detailed design mode**, users can configure interiors at a higher resolution to match their project design. This includes adjusting area takeoffs, creating multiple assembly types, and customizing parametric assemblies at the sub-assembly and material level. For example, within a given interior wall type, users can adjust framing type and spacing, select cavity insulation materials, and choose from a range of wall finishes. Default wall assemblies include finishes on both sides. Single-sided wall assemblies are available in the typology dropdown to represent the inside face of exterior walls, whose framing and cladding are captured in the Enclosure portion of the building model. Material quantities are based on industry guidance and standard North American construction practice. Detailed assembly descriptions and reference specification language are available in the detailed view. ### Interior Materials For each assembly, C.Scale calculates material quantities per unit of assembly area. This allows models to be updated easily as takeoffs evolve throughout the design process. C.Scale automatically multiplies these per-area material quantities by the total assembly area to produce a consistent material inventory for the project. Users can create custom assemblies and save them to a project scenario by editing materials within an assembly, or by duplicating a scenario and updating its name, description, and constituent materials. Generic materials are based on North American industry-average EPDs wherever available, and are reported per the declared unit of the relevant Product Category Rule (PCR) to support material substitution and comparison with product-specific EPDs within a category. ### Updates and Improvements Don't see an assembly or a material you need? Reach out to our team — we're continually expanding our generic assembly and material library and welcome requests. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.cscale.io/the-c.scale-tm-data-model/whole-life-carbon/interiors.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.