So, this type of foundations can also be called as partly compensated foundations instead of fully floating or compensated foundations.įloating foundations are desirable for the following types of soils: But here one point is to be noted that we cannot build a structure immediately after the excavation.ĭuring the time of construction, the effective vertical pressure under the depth of excavation may slightly increase because of unbalancing weight. Now in the next step, a building is constructed which is as same weight as of the removed soil and water.Įven the depth of excavation is below the table the total vertical pressure in the soil below the foundation is unchanged because of its balancing weight. The ground is excavated up to certain depth which is below water table. Let’s consider a ground with water table at the top as shown in the above picture. So, this foundation is also called as balancing raft foundation. The main principle of floating foundation is to balance the weight of removed soil by a structure of same weight which causes zero settlement to the structure. Floating foundation is also called balancing raft and causes zero settlement to the structure. Difficulties in Construction of Floating FoundationĪ floating foundation is a type of foundation constructed by excavating the soil in such a way that the weight of structure built on the soil is nearly equal to the total weight of the soil excavated from the ground including the weight water in the soil before the construction of structure.This image is a derivative work of the following images: You may select the license of your choice. GFDL GNU Free Documentation License true true A copy of the license is included in the section entitled GNU Free Documentation License. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.Ĭreative Commons Attribution-Share Alike 3.0.You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.to share – to copy, distribute and transmit the work.This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license. I, the copyright holder of this work, hereby publish it under the following licenses:

Floating foundation wikipedia