The spacing of the reinforcement c c.
Footing double mat reinforcement.
We know that we have to insert reinforcement in footings for tension requirements.
Datta the percentage of reinforcement in footings is between 0 5 to 0 8.
If lap splices in the foundation mat reinforcement are to be staggered they need to be carefully detailed on the design drawings.
It is very important to learn bar bending schedule for finding out the quantities of steel reinforcement required for every component of the building.
Steel reinforcement forms an important part of concrete foundations.
Foundations spread footings flexural reinforcement.
Otherwise the staggered splices for different layers of reinforcing bars may.
The diameter of footing reinforcement.
A grade of reinforcement is going to use.
In the mat foundations we have to provide double chair bar in the foundation to support the mesh properly.
These double meshes are important to space properly.
Mats of reinforcement for stability as the two tie points will properly secure the dowel bars from displacing fig.
Thus good placement of horizontal and vertical rebars in a footing is of utmost importance as placing concrete.
Before calculating the steel read carefully given footing drawing and note all the important points like.
A good detailing of reinforcement covers topics like cover to reinforcement based on environmental considerations for durability minimum reinforcement and bar diameters proper dimensioning.
At those places we use mat foundations to distributes the whole loads of the structure to the soil when the area of the footing was increase than the soil load bearing capacity will also increase because this foundation reduces the stress on the soil at the same place.
Raft mat foundation is used in those places where we have less bearing capacity of the soil.
Contents placement of rebar in footings1.
For suppose consider the case of high rise buildings it requires tons of steel to complete 10 floor building.
The steel quantity in column footing can be calculated very easily.
Reinforcement detailing of footing is as much important as site investigation for the structural design of footing.
Bar bending schedule for footings bar bending schedule plays a vital role in the construction of high rise buildings.
Requirements for the distribution of flexural reinforcement in two way footings are given in sections 13 3 2 2 and 13 3 3 3 of aci 318 14 building code requirements for structural concrete for square footings the reinforcement is to be distributed uniformly across the entire width of the footing in both directions.
The placement size cover tying and tolerance in steel reinforcement are considered to achieve ultimate efficiency of the footing.
