Why PCC is laid below footing?

Why PCC is laid below footing?

Pcc is used as a leveling course and as lining for rich concrete used in footing. If PCC Is not provided below footing,cement slurry will be absorbed from fresh concrete by soil, making the concrete previous.

Is PCC required below plinth beam?

The masonry work either U.C.R. or brick, from footing top to plinth level comes under plinth masonry. The thickness and the type of masonry depend on the design of the beams @ plinth tie level. No masonry should rest on bare soil, but it should rest either on P.C.C. done on well-compacted strata or on plinth/tie beam.

What is BFS construction?

Building Feature Service (BFS) appears in: Handbook of Research on Building Information…

What type of footing is preferred for load bearing structures?

Pile Foundations Pile foundations are used to transfer heavy loads of structures through columns to hard soil strata which is much below ground level where shallow foundations such as spread footings and mat footings cannot be used.

What is the difference between PCC and RCC?

Plain cement concrete (PCC) is simply concrete by definition. It is cement + water + fine aggregates + coarse aggregates. Reinforced cement concrete (RCC) is PCC + reinforcement. The reinforcement is generally steel bars bent and laid into the desired shape and orientation.

Does PCC require shuttering?

PCC (Plain Cement Concrete) : This is a sub-base structure of any foundation to ease the foundation work like Shuttering, Reinforcement, concreting, etc. Below PCC we need to do excavation, cleaning, rubble soling, compaction, plum concrete, etc. PCC can prevent termites as well as riotous insects, etc.

What is the difference between tie beam and plinth beam?

Actually, there is no difference between them. Tie beam is also a type of plinth beam. When tie beam is provided at plinth level it is known as plinth beam. Plinth beam is only provided at plinth level but tie beam is provided anywhere above the plinth level and floor level.

Why is plinth protection needed?

The protection of the plinth is necessary to prevent/reduce the infiltration of water in the soil that reaches the plinth wall and reaches the floor level by capillary action. The plinth board protection reduces the direct entry of water into the ground near the plinth beam wall.

Which type of footing is best?

Isolated footings are provided where the soil bearing capacity is generally high and it comprises of a thick slab which may be flat or stepped or sloped. This type of footings are most economical when compared with the other kind of footings. Economical when columns are placed at longer distances.

Which footing is best for home?

1. Concrete Slab Foundation. A concrete slab is one of the most common types of house foundations, requiring the least amount of lot prep to begin building. Installation is simple compared to other foundation types, making slab foundations popular among homeowners for their relatively low price tag.

Why is PCC used in construction?

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 …

Why do we lay PCC below footings?

PCC is layed below the footing for only 1 reason. Think if you are casting the footing without PCC. Without PCC means, you are casting the footing on the compacted soil. The soil surface will obviously not be a properly levelled ground.

Is high grade concrete necessary for a PCC structure?

The PCC is used to form a Smooth finished layer to hold the Structural elements in proper level (same level) and helps in distributing the loads to the soil. So for this High grade concrete is not necessary. If you design a high grade concrete means it will impact on Cost factor.

How to prepare the finished surface of PCC?

Fig 3: Finished Surface of PCC. Water should be mixed with a bucket, in a measured quantity, as per w/c (water/ cement) ratio. Use the chute or additional labor to pour the concrete where the depth is more. Remove any loose material from the sides of the pit, so that no soil or other material will collapse in the pit during concreting.

What is the full form of PCC?

The term PCC stands for plain cement concrete. The mixture of cement, fine aggregate (sand) and coarse aggregate are generally called plain cement concrete (PCC). Before starting any R.C.Cor masonry work directly on the excavated soil, PCC is done to form a levelled surface and to avoid laying concrete on soil directly so as to avoid mixing/