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Cover is the distance from the surface of the concrete to the surface of the reinforcement bar.
Nominal cover (Cnom) is the cover that the designer, and steel fixer tries to achieve.
Minimum cover (Cmin) is the absolute minimum cover that must be maintained for durability reasons after taking into account deviations in as built cover. Acceptable values of Cmin are given by BS8500 and EN 206. (Warning prior to BS8500, and EN206 minimum cover was also used as a term to describe nominal cover to the outer layer of bars).
Δc is the cover tolerance. (Cnom must be >= Cmin + Δc)
Note: bar bending/cutting tolerance for bars fitting between two fixed faces (defined in BS8666) is allowed for separately by reducing the scheduled dimensions of bars fitting between two fixed faces by +5mm (bending) +25mm (cutting) in the bar schedules.
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Is politics nominal or ordinal?
Nominal.
Is BMI a nominal or ratio data?
nominal
Is favourite sport ordinal or nominal?
Nominal
Is occupation nominal or ordinal or interval?
Occupation is nominal data. There is not an order to the category occupation, so that eliminates ordinal and interval.
What unit of measurement ordinal nominal interval or ratio is martial status?
nominal
What is nominal cover to concrete?
it is the clear cover for stirrups. effective cover of the reinforcement = nominal cover+ diameter of stirrups+half diameter of main bars
What is the maximum clear cover of concrete?
75mm is the maximum clear cover of concrete
Nominal percentage of steel reinforcement in concrete?
2%....according to Bureau of Indian Standards, Concrete design code book - IS-456
What is the difference between clear cover and cover and nominal cover to reinforcement?
It is one and the same thing according to IS 456-2000
How do you cover brick with concrete?
POUR THE CONCRETE OVER THE BRICK
How many bags of cement in one meter cube of concrete for M25 grade in nominal mix design?
10.94 bags
Why cover concrete with plastic?
For proper curing
What is to cover a road with a material like asphalt or concrete?
pave
Can you cover redbrick wall with concrete?
Yes. It called rendering.
What is nominal mix design?
Nominal mixes are those proportioned by the volume of the main ingredients and usually written in order of the ingredients thus Cement:Sand: Coarse aggregate (stone, chippings). So a 1:3:6 is a nominal mix containing 1 volume of cement, 3 volumes of sand and 6 volumes of coarse aggregate. Gauge boxes are generally used to batch the ingredients. The problem with these types of mixes is that the quality of the concrete is entirely dependant on the quality of the materials. In other words, if you use the same gauge boxes to weigh ingredients from different sources, you will most likely have different concrete qualities. Designed mixes on the other hand are specified as a grade the producer of the concrete has to achieve usually in terms of compressive strength but may include other criteria (size of the stone, minimum amount of cement, flexural strength, air content etc). So a grade 30 concrete will be the same whether batched in Kansas City, Karachi, Kingston-Upon-Hull or Kinshasa
What is the benefit of concrete floors in the basement?
The benefits of concrete floors in a basement are durability, low maintenance and versatility. You can easily cover the concrete with any material later on.
Why is clear cover required in concrete?
There are several reasons, but corrosion protection and concrete spauling are probably the most important factors.
