Building codes for a single family dwelling typically require hallways to be a minimum of 3 ft (36 inches) in width. A hallway that is 5 ft (60 inches) in width comfortably allows for the passage of two people. As a side note, the width of a typical wheelchair is 22 inches.
Residential building codes vary substantially from municipality to municipality and should be checked locally, but at minimum a hallway width should be no less than 36 inches.
The minimum hallway width in a residential building is typically 36 inches (3 feet) according to many building codes. This width allows for safe passage, including for individuals with mobility aids. However, local regulations may vary, so it's important to check specific building codes applicable to the area.
3 feet.
3 feet.
Answer
21 feet
3 feet
Length is 3/4 of 36 ie 27 ft, width is 9 ft
5 and 10
48 inches
There is not a quote "standard" door width as doors can be purchased in 2" increments. There are a few building code restrictions for minimum width of certain doors. Like an egress door is required to be 36 inches in width for a residence. There can also be minimum widths for handicap accessibility. These doors in a house need to have a clear opening width of 30 inches.
You should have at least one in each room. And one in each hallway. My house has a total of 23 smoke alarms