> For the complete documentation index, see [llms.txt](https://docs.betterbuilding.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betterbuilding.io/user-guide/workflows/moisture/scope.md). # Scope
## Objective An Objective is the metric that you would like to assess as part of your study. Determine which Objectives are enabled for your simulation, and the order in which they are presented. ### **Mould Growth Index** Mould Growth Index refers to the potential for mould to develop in certain conditions within a building. [Mould Growth Index](#mould-growth-index) is generally influenced by factors such as temperature, relative humidity, and the presence of organic material for mould to feed upon. The presence of mould can degrade materials and negatively impact indoor air quality, posing potential health risks. ### **Water Content** Water Content refers to the amount of water present in a wall system. In the context of hygrothermal modelling, this could be the water in the air (humidity), or the water absorbed or adsorbed by the building materials. Understanding the water content in materials is essential because it influences the thermal properties of materials, can lead to the degradation of materials, and plays a significant role in the development of conditions favourable for biological growths like mould. Kg/m2, kg/m3 and M% can all be assessed. ### **Relative Humidity** Relative Humidity in the context of hygrothermal simulations refers to the amount of moisture in a material compared to the maximum amount of moisture the air could hold at that temperature, expressed as a percentage. When relative humidity reaches > 80%, the potential for condensation and mould growth begins within building structures. ### **Dew Point** The dew point is the temperature at which air becomes saturated with water vapour and dew can form. In hygrothermal modelling, understanding the dew point is crucial, as it can help predict where condensation might occur within a building structure. When the temperature of a surface drops below the dew point of the surrounding air, water vapour from the air condenses onto that surface, which can lead to problems like dampness, mould growth, and material degradation. ### **Temperature** A metric assessing the temperature that affects condensation by altering air's moisture-holding capacity. ## **Indoor Typology** Determine if the indoor typology is Residenital or Commercial. ## Run Period Determine the period in which the Objective will be simulated. 1 - 3 years can be chosen for a well-designed wall system or in the early design stages. For all other systems, 10 years should be chosen. ## Orientation Orientation refers to the geographical direction a building or a part of the building (like a wall or window) faces. Orientation can significantly impact the amount and intensity of solar radiation a building receives, which in turn affects the thermal and moisture dynamics within the building. ## Inclination Determine of the inclination of the wall (90 degrees) to roof (0 degrees). ## Floor Area Floor area refers to the total area of the floor of a space, measured in square meters. In hygrothermal modelling, floor area directly correlates to internal moisture loading, with larger floor areas typically having lower moisture loading than smaller areas. ## Floor to Ceiling Height This is the vertical distance from the floor to the ceiling of a room. It can influence the volume of air in a room and thus impact internal moisture loading. ## Solver Under Solver, either a standard EnergyPlus HAMT solver or a Better Building HAMT solver with injected sources and configurable grid schemes is selected. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://docs.betterbuilding.io/user-guide/workflows/moisture/scope.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.