kənˈtrōl ˈjoint
noun
A joint in concrete that is designed to control cracking
Example usage: The control joint helps to reduce the risk of cracking when the concrete shrinks or is subjected to vibrations.
Most used in: Construction projects in most parts of the world.
Most used by: Trades people such as concrete workers, masons and builders.
Popularity: 8 out of 10.
Comedy Value: 3 out of 10.
Also see: Expansion Joint, Contraction Joint, Isolation Joint, Construction Joint,
What is a Control Joint?
A control joint is an intentionally designed gap that is placed in concrete or masonry structures. It is designed to allow for the natural expansion and contraction of the material due to temperature changes, moisture and other environmental factors. The purpose of a control joint is to reduce the risk of cracking along the area where the material is most prone to cracking.
Control joints are an essential part of any construction project that involves concrete or masonry. They are typically placed every 8 to 10 feet in a straight line. The gap between the two sides of the joint is typically filled with an elastomeric sealant. This sealant is used to keep water and other contaminants out of the joint and prevent further cracking.
Control joints are especially important in plumbing construction. Plumbers must be sure to account for the expansion and contraction of the concrete or masonry material when they are installing pipes and other fixtures. Without proper control joints, the pipes and fixtures could be damaged or weakened due to the movement of the material.
According to the American Concrete Institute, control joints should be placed in concrete slabs at intervals of no more than 18 feet. This ensures that the slab is able to expand and contract without risk of cracking. If the control joints are placed too far apart, the slab could crack due to the pressure of the expanding material.
Control joints are an essential part of any plumbing construction project. Plumbers must be sure to account for the expansion and contraction of the material when they are installing pipes and other fixtures. Properly placed control joints will ensure that the pipes and fixtures are not damaged or weakened due to the movement of the material.
The Origin of the Term 'Control Joint' in Plumbing Construction
The term 'Control Joint' was first used in the plumbing construction industry in the early 20th century. It is believed that the term originated in the United States, although its exact origin is unknown. Control joints are used to control the movement of water in a plumbing system, and to prevent cracking and other damage caused by the expansion and contraction of pipes due to changes in temperature or pressure.
Control joints are typically made from metal, such as copper or steel, and are designed to be flexible and move with the pipes. This flexibility helps to reduce the amount of damage caused by the expansion and contraction of the pipes, and also helps to keep the pipes from leaking. Control joints are also used to seal the joints between different sections of the plumbing system, to keep water from entering the interior of the building.
The use of control joints has become increasingly important in plumbing construction, as the materials used in plumbing systems have become more complex and varied. Control joints are now used in a variety of applications, including residential, commercial, and industrial plumbing systems. They are an essential part of any plumbing system, and can help to ensure that the system is efficient and safe.
