Which factor is NOT a consideration when estimating water demand for plumbing systems?

When estimating water demand for plumbing systems, various factors play crucial roles in accurately predicting usage. The type of fixtures directly influences water demand, as different fixtures such as toilets, faucets, and showers have varying flow rates and consumption patterns. Time of day is also significant, as water usage can fluctuate based on daily routines, with peaks occurring during mornings and evenings when people are more likely to engage in activities such as showering and cooking. Continuous and intermittent usage patterns must be considered as they affect the overall calculations of demand—continuous usage reflects elements like irrigation or cooling systems, while intermittent can relate to restroom facilities in a commercial setting.

The number of floors in a building typically does not directly affect the water demand estimation itself. While it can influence factors such as pipe sizing and pressure considerations, the demand is more closely tied to the types and numbers of fixtures and how they are used rather than the structural aspects of the building. Hence, this factor is not a primary consideration when estimating overall water demand.