Comparison of Raft Foundation and Beam & Slab Raft Foundation for High Rise Building

  Suman M. Sharma,  Prof. Mayur G. Vanza,  Dhumketu D. Mehta

The common practice to design the foundation is to provide, first the shallow foundation such as isolated footing or raft to support structure and if this is not adequate then deep foundation like piled foundation. In this paper the choice between a raft and beam and slab raft foundation depends upon the soil properties and the weight of the building. In this Paper, study is carried out for comparison of “Raft foundation” and “Beam and Slab Raft foundation”. Excel Spread Sheet (manual) is prepared for the analysis and design of Raft foundation. Beam and Slab Raft foundation is analyzed and designed by using Excel Spread Sheet (manual) and STAAD Pro. Software. In this Paper analysis and design of economical foundation for high rise building has been done considering both geotechnical and structural design aspect. Quantitative study has been carried out for different values of Soil Bearing Capacity. Based on this study we conclude that for given bearing capacity like 180 KN/m2, 220 KN/m2, 250 KN/m2) Beam and Slab Raft foundation is found most safe and economical rather than Raft foundation.

Keywords- Raft foundation, Beam and Slab Raft foundation, Excel Spread Sheet, STAAD Pro., Soil Bearing Capacity.

Unique Identification Number - IJEDR1401101
Page Number(s) - 571-575
Pubished in - Volume 2 | Issue 1 | March 2014
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Suman M. Sharma,  Prof. Mayur G. Vanza,  Dhumketu D. Mehta,   "Comparison of Raft Foundation and Beam & Slab Raft Foundation for High Rise Building", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.2, Issue 1, pp.571-575, March 2014, Available at :http://www.ijedr.org/papers/IJEDR1401101.pdf