How many years can a three-quarter-inch-thick tongue-and-groove solid maple floor typically last under normal circumstances?

A three-quarter-inch-thick tongue-and-groove solid maple floor is known for its durability and longevity, especially when installed and maintained properly. These types of hardwood floors can typically last a significant amount of time, often ranging from 40 to 80 years. This lifespan is influenced by factors such as foot traffic, maintenance practices, the quality of the flooring installation, and environmental conditions.

The selection of this answer highlights the durability of solid hardwood, which, if taken care of through regular cleaning, refinishing, and appropriate humidity control, can withstand years of use. It's important to note that while other options may suggest longevity, the most accurate range reflecting the expected lifespan for well-maintained solid maple flooring falls within the 40 to 80-year mark.