Types of Combined Footing || What Is Combined Footing || Application of Combined Footing in hindi

Hi I am Rahul Welcome to my youtube channel Civil Notebook. About this video- Dosto is video me app logo ko batayunga Types of Combined Footing ke bare me. Ummeed Hai Aapko Ye Video Bahut Pasand Aayegi. What Is Combined Footing ? Whenever two or more columns in a straight line are carried on a single spread footing, it is called a combined footing. The reasons when combined footings are preferred 01. The distance between two columns is small and when soil bearing capacity of soil is lower and their footings overlap with each other. 02. When one column is close to a property line or sewer pipe, the Center of gravity of column will not coincide with footing. In such cases, it is necessary to provide combined this footing with that of the adjacent internal column. 03.Dimensions of one side of footing are restricted to some lower value so that column footings may be combined. Types of Combined Footing (Plan View) The combined footing may be rectangular, trapezoidal or Tee-shaped in a plan. The ultimate aim is to get uniform pressure distribution under the entire area of the footings. 1. Slab Type Combined Footing 2. Slab-Beam Type Combined Footing 3. Strap-Beam Type Combined Footing Slab type combined footing supports two or more column with bottom slab only. Slab-beam type combined footing supports two or more column with bottom slab and beam. Strap-beam type combined footing is used when one column is located on a property line, resulting in is an eccentric load on a portion of the footing. Therefore provide a beam in the footing to the adjacent column footing to restrain the overturning effect. The rectangular footing is provided when one of the projections of the footing is restricted or the width of the footing is restricted. Advantages : Disadvantages : The advantage of combined is if there is required two or more columns construed in a small area then we can use combined footing. where the load-bearing capacity of the soil is low there we construed combined footing. Where the soil capacity of the Construction area is unequal to distribute the load evenly to the sub-soil we construed combined footing. This type of combined footing is more profitable than another footing. If the foundation raft thickness is high, the problem may arise due to the heat difference. The footing area is reduced because a common footing is used for many columns. The general disadvantage of combined footing is that its size should be varied to the place.