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Mat Foundation Lecture Draft.pdf

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    Pamantasan ng Lungsod ng Maynila (University of the City of Manila) College of Engineering and Technology Foundation Engineering Mat Foundation Engr. Jefran B. Fresnido  Academe/MEng-SE /SE/PM/CM/Consultant    Outline of Presentation Introduction Combined Footings Common Types of Mat Foundations Bearing Capacity of Mat Foundations Differential Settlement of Mats Field Settlement Observations for Mat Foundations Compensated Foundation Structural Design of Mat Foundations 2  Introduction Under normal conditions, square and rectangular footings are economical for supporting columns and walls. However, under certain circumstances, it may be desirable to construct a footing that supports a line of two or more columns. These footings are referred to as combined footings. When more than one line of columns is supported by a concrete slab, it is called a mat foundation. Combined footings can be classified generally under the following categories: a. Rectangular combined footing b. Trapezoidal combined footing c. Strap footing Mat foundations are generally used with soil that has a low bearing capacity. 3    Rectangular combined footing Trapezoidal combined footing 4 Strap footing
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