Determining the height of your structure This figure is shown below: The measurement should be measured from the lowest ground level to the highest inhabited storey's completed floor level (i.e., excluding roof-top plants and any top storeys consisting exclusively of plant rooms).
If you were to climb to the top of one of these buildings and use a ruler to measure their height, what number would you get? If you used the metric system instead, you'd get 100 meters for every such height measurement.
In the United States, building codes require that all new construction be registered with the local building department and that old buildings be brought up to current code when making changes or adding on. Registration numbers are usually placed on the building's exterior in some form of paint or marker. These numbers are also used by building inspectors when checking out buildings involved in an incident such as a fire or collapse. The inspector will refer to the registration number when writing up his/her report of the incident.
You can see your building's registration number if you visit its record at the local building inspection office. You may have to ask the owner for this information.
The registration number consists of two parts: A D number followed by a letter. The D number identifies the district in which the building is located while the letter indicates the type of building.
The height of a building or structure is measured from the completed grade within 2 feet of the foundation wall to the highest point on the building or structure. The vertical distance between the finished grade and the highest point on the building is defined as the building height, provided that the measured elevation does not include fill or berms. If it does, then the measured elevation must be corrected by adding the average elevation of these elements to the finished grade.
Example: A building with an average floor elevation of 60 inches above sea level has its height measured from the finished grade to the top of the building. If the floor of the building is raised 12 inches so that it's 72 inches above sea level, then the height of the building is still measured from the finished grade to the top of the building. There is no need to adjust the height measurement.
For measuring the height of structures such as bridges, look at the average elevation of the structure. The height of the structure is measured from the lowest point on the structure to the highest point.
Example: A bridge with an average floor elevation of 30 inches above sea level has its height measured from the lowest point on the structure to the highest point. If the floor of the bridge is raised 12 inches so that it's 42 inches above sea level, then the height of the structure is also measured from the lowest point on the structure to the highest point.
The vertical distance from the average final grade to the highest point of the coping of a flat roof, the deck line of a mansard roof, or the average height of the highest gable of a pitched or hip roof should be measured. This is called the "building height." The building height is then used in calculating other heights such as chimney stacks, water towers, and radio antennas.
Chimneys: The typical residential chimney is 8 feet high. If the roof is not flat, then take the average elevation of the lowest point of the roof to determine how high to build the chimney. Water towers: See below for information on measuring water towers. Radio antennas: See below for information on measuring radio antennas.
To figure the building height, first find the average elevation of the lowest point of the roof. For example, if the roof has an elevation difference of 4 feet at its lowest point, then the building height must be greater than 4 feet. Next, multiply that number by 3.5 (the typical height of a house), unless the architect has already done so through detailed drawings. For example, if the building height is 50 feet, then the average elevation of the lowest point of the roof is 32 feet 6 inches. The building height can also be determined by using a tape measure or ruler to measure the vertical distance from the floor or ground level to the top of the ceiling or roof.
Height is a measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how tall something or someone is). "The height of the structure is 50 meters," for example, or "the height of an airplane in flight is about 10,000 meters." The word "height" is used to describe the distance from ground level to the highest part of something. The term "highness" can be used to describe something that is high compared with others around it.
There are several ways to measure height. The two most common are using a yardstick or meter stick and measuring up to the first major branch/branches of a tree or other tall object, or calculating depth by using the altitude of sun rays hitting the surface of the earth at a given place and time.
In science, engineering, and mathematics, height is usually defined as the distance between the center of one circle's edge and the center of another circle. For example, the height of a triangle is defined as the length of its longest side. In physics, height is used to describe the distance between the center of mass and the top of an object.
The expression "a foot high" means about 2 feet 6 inches, or 30 centimeters. A "six-foot pole" is exactly 60 inches, or 150 centimeters, high.