Why is PCC done before footing?
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Why is PCC done before footing?
The main reason of providing PCC is to provide a rigid impervious bed to RCC in the foundation before starting any RCC or masonry work directly on the excavated soil, PCC is done to form a leveled surface and to avoid laying concrete on soil directly so as to avoid mixing with soil and also to prevent soil extracting …
What is the purpose of PCC in construction?
The objective of plain cement concrete alias PCC is to arrange a firm impermeable bed to RCC in the foundation where the soil is soft and flexible. It is mostly applied over brick flat soling or devoid of brick flat soling. It is also known as Cement Concrete (CC) or Blinding Concrete.
Which comes first footing or foundation?
In summary:
- T-shaped foundations are used in areas where the ground freezes.
- First, the footing is placed.
- Second, the walls are constructed and poured.
- Lastly, the slab is placed.
Where is PCC and RCC used?
PCC is paste of cement, aggregate and water. It is mostly used in flooring and usages where it is liable to low stress only. PCC cannot withstand tensile stress. RCC is used in most of civil work and main frames which will withstand all stress and heavy loads.
What is foundation in construction?
A foundation is a lower portion of building structure that transfers its gravity loads to the earth. Foundations are generally broken into two categories: shallow foundations and deep foundations. Once the foundation has been packed down tightly, or dried hard, we can begin to build the building superstructure.
What is PCC and RCC in construction?
Plain cement concrete (PCC) is simply concrete by definition. Reinforced cement concrete (RCC) is PCC + reinforcement. The reinforcement is generally steel bars bent and laid into the desired shape and orientation. The reinforcement can be both tensile or compressive reinforcement depending upon the situation.
What is the composition of PCC?
PCC consists of three basic ingredients: aggregate, water and portland cement.
Why use a strip foundation?
Strip foundations consist of a continuous strip of concrete formed centrally under loadbearing walls. The continuous strip acts as support for which walls are built and is to a width to spread the load evenly of the building on the ground underneath it, supporting it.
Is footing same as foundation?
What are Footings? Under every house is a foundation, and under most foundations are footings.