Table of Contents
High-Strength Concrete Mix: When durability is key, high-strength concrete makes a great choice. This is ideal for foundations, footers and heavy equipment bases.
What type of cement is used for foundations?
Which type of cement is best for constructing the foundation? The foundation carries the load of the construction and hence needs to be strong and durable. Portland Pozzolana Cement (PPC) is the ideal cement to be used as it hydrates slowly and gives high final strength.
What type of concrete is used for house footings?
Overall, concrete slab house foundation are the most common type. These foundations are made from poured concrete – usually between four and eight inches deep – and reinforced with steel bars called rebar. Basement foundations have subterranean concrete walls that support the above-ground structure.
Which cement is best for footings?
OPC is the best for house construction in India. Generally, OPC 53 Grade cement is suitable for all RCC structures like footing, column, beam, and slabs, where ever initial and ultimate strength is the major structural requirement.
Which cement company is best for foundation?
The following are the top cement companies in India 2021, ACC Cement. Shree Cement. Birla Cement. JK Cement. Binani Cement. Jaypee Cement. Dalmia Cement. India Cement.
What are the 3 types of foundations?
Foundation types vary, but likely your house or home’s addition does or will have one of these three foundations: full or daylight basement, crawlspace, or concrete slab-on-grade.
What are footings for a foundation?
Footings are an important part of foundation construction. They are typically made of concrete with rebar reinforcement that has been poured into an excavated trench. The purpose of footings is to support the foundation and prevent settling. Footings are especially important in areas with troublesome soils.
How thick is concrete slab foundation?
A slab foundation is made of concrete that is typically 4″ to 6″ thick in the center. The concrete slab is often placed on a layer of sand for drainage or to act as a cushion. Houses built on a slab lack crawlspaces, and there is no space under the floor.
What is the difference between OPC and PPC cement?
Portland Pozzolana Cement is a variation of Ordinary Portland Cement. Pozzolana materials namely fly ash, volcanic ash, are added to the OPC so that it becomes PPC. PPC is cheaper than OPC. PPC has low initial setting strength compared to OPC but hardens over a period of time with proper curing.
Are footings and foundations the same thing?
Foundation is a structure which transfers the loads from the superstructure to the ground, while footing is the foundation which is in contact with the earth. A foundation can be shallow and deep, while a footing is a type of a shallow foundation.
Which is better PPC or OPC cement?
Both OPC and PPC cements are good for construction of concrete slab. OPC is the most commonly used cement in industrial and large construction, PPC is most commonly used for small residential constructions. OPC cement hardens faster than PPC, has higher heat of hydration and thus it requires more care in curing.
Which is better PSC or PPC?
PSC lessens the risk of shrinkage cracks and cracking. Strength gain is less in PPC and it is also not suitable for high performance concrete and quick concrete setting whereas PSC brings ultimate strength and excellent finish, hence PSC holds the upper hand.
How do I choose concrete?
Cement grades are specified by its compression strength in Newtons/sq mm achieved after 28 days of setting. Commonly used in India are Grades 33, 43 and 53. The numerals indicate its strength. The Civil Design Engineer determines the usage of a specific grade of cement, depending on the application.
Which concrete grade is best for slab?
GRADE: C25 CONCRETE Strength: 25 Newtons after 28 days. A multi-purpose concrete that is used on a wide range of commercial and domestic construction sites. C25 is often used when pouring foundations (footings). It is also the ideal concrete for domestic slab foundations for house and bungalow floors.
What are the 4 types of foundations?
There are four examples of shallow foundations that we’ll cover mat, individual footing, combined footing and stem wall. Each has a unique structure and various use cases.
What are the 5 types of foundation?
There are five main foundation types and a handful of important variations. Basement Foundation. Crawlspace Stem Walls. Concrete Slab Foundations. Wood Foundations. Pier and Beam Foundations.
What are the 6 types of foundation?
Following are different types of foundations used in construction: Shallow foundation. Individual footing or isolated footing. Combined footing. Strip foundation. Raft or mat foundation. Deep Foundation. Pile foundation. Drilled Shafts or caissons.
How thick should a foundation footing be?
For masonry or concrete construction, the minimum foundation wall will be 6 inches. The minimum reinforced concrete footing thickness will be 6 inches or 1-1/2 times the length of the footing projection from the foundation wall, whichever is greater.
Do footings need rebar?
Plain concrete deck foundations without rebar are acceptable under the minimum standards of construction established in the International Residential Code. Footings with large bearing areas or unstable soil can benefit from adding rebar to prevent cracking.
What is footing and types of footing?
There are four types of shallow foundation: Individual footing or isolated footing. Combined footing. Strip foundation. Raft or mat foundation.
How thick should a concrete foundation be?
As a practical consideration, residential designers need to keep in mind that concrete foundation walls are typically 6, 8 or 10 inches thick (nominal). The typical concrete compressive strength used in residential construction is 2,500 or 3,000 psi, although other strengths are available.
What is the cheapest type of foundation?
If you’re building a home, a concrete slab makes sense because of its low cost. It’s the cheapest option available, and, comparatively speaking, it’s the quickest solution. The right crew can lay a concrete slab foundation in a short period of time, and the drying process doesn’t take much longer.
How deep do concrete foundations need to be?
Strip, trench fill or pad foundations must be cast at a minimum depth of 750mm in low plasticity clays, 900mm depth in medium, and British Standard 8004 recommends a minimum depth of 1m for foundations in the highest risk areas. If there are, or were, trees nearby, depths of up to 3m may be necessary.
