Introduction of Clear Cover Nominal Cover and Effective Cover in RCC
Cover in reinforced concrete is the least thickness of concrete or any other material that protects the steel reinforcement from the environment. The cover is therefore required to protect the steel from corrosion due to the action of water, oxygen, and carbon dioxide. It is also needed to provide fire resistance and to protect the steel from abrasion and impact.
There are different types of cover used in concrete depending on the application. The three most common types of cover used in concrete are clear cover, nominal cover, and effective cover.
Clear cover is the least thickness of concrete or any other material that fully protects the steel reinforcement from the environment. It is used where the reinforced concrete is exposed to the weather or where there is a risk of corrosion
Difference Between Clear Cover Nominal Cover and Effective Cover in RCC
- Nominal cover refers to the distance between the face of the concrete member and the center of the Reinforcement.Clear cover is the actual distance between the face of the concrete member and the outermost edge of the reinforcement.
Effective cover is the distance between the face of the concrete member and the center of the neutral axis of the cross section of the member.
What Is Clear Cover in Concrete
- Clear cover is the concrete thickness above the reinforcement bars, or rebar, in a concrete slab
- It is measured from the top of the rebar to the bottom of the concrete member
- The minimum clear cover for concrete is typically 3 inches.
How to Define Nominal Concrete Cover
- Concrete cover is the minimum thickness of concrete that is required to protect the reinforcement in a concrete structure from corrosion
- It is typically measured from the top of the reinforcing bars to the bottom of the concrete element
- The nominal concrete cover is the thickness of concrete that is specified in the design of the structure.
How to Defined Effective Cover
- COVER What is cover? Cover is anything that will protect you from enemy fire
- It can be natural (trees, rocks, ditches), or man-made (walls, buildings, vehicles)
- How do I use cover? To use cover effectively, you need to do two things: first, choose the right type of cover for the situation; and second, use that cover correctly.Types of cover There are three main types of cover: light cover, heavy cover, and full cover
- Light cover, as the name suggests, offers only a little protection from enemy fire
- It might stop a few bullets, but it’s not going to stop a grenade or a direct hit from a tank shell
- Heavy cover is much more resistant to enemy fire, and can usually stop all but the most powerful weapons
- Full cover is almost impossible to penetrate, and will protect you from almost anything.Using cover correctly Once you’ve chosen the right type of cover, you need to use it correctly
- That means keeping your body behind the cover, and peeking out only when you need to fire
- If you expose yourself, you’ll be an easy target for the enemy.
Conclusion
The introduction of clear cover, nominal cover and effective cover in RCC has made the construction process more efficient and effective. It has also helped to improve the quality of the finished product.
Frequently Asked Questions
What is clear cover in reinforced concrete?
Clear cover is the least thickness of concrete or any other material that fully protects the steel reinforcement from the environment.
What are the three types of cover used in reinforced concrete?
The three types of cover used in reinforced concrete are clear cover, nominal cover, and effective cover.
What are the three different types of cover used in concrete?
The three different types of cover used in concrete are clear cover, nominal cover, and effective cover.
