Design Of Raft Foundation Spreadsheet

seeking help to design this type of foundation. (CNAA) A Thesis subm itted for the degree of Master of Philosophy in the Faculty of Engineering of the U niversity of Surrey. Well Foundations. Glioblastoma is one of the most aggressive and deadly forms of brain cancer, and The Glioblastoma Foundation seeks to transform care and treatment for the disease. Design Guide Existing Foundation Capacity Determination. Shop for Books on Google Play. Previous question Next question Get more help. The properties used in the analysis and the design of this raft foundation are shown in table 4. Bolt Pattern Group Pullout Excel Spreadsheet Calculator This design uses the anchor bolt to clamp the steel baseplate down onto the concrete slab/foundation. Spreadsheets donated us the possible to input, transform, and estimate anything we required and store it digitally for reprocess. Spreadsheet to Design of Raft Foundation with necessary calculation steps. Bourgeois Université Paris-Est, LCPC-MACS, Paris, France ABSTRACT. You may use architecturaldesign and cost estimation of RCC RAFT foundationspossibilities for the foundation plan, schedules. @Download Epub ⚣ Kon-Tiki: Across the Pacific by Raft ë Am going to cross Pacific on a wooden raft to support a theory that the South Sea islands were peopled from Peru Will you come Reply at once That is how six brave and inquisitive men came to seek a dangerous path to test a scientific theory On a primitive raft made of forty foot balsa logs and named Kon Tiki in honor of a legendary sun. You might build anything from simple spreadsheet to Oil Storage Tank Foundation Design Spreadsheet that feed off of massive data sets—the number of choices seemed endless. Although simplified design methods for piled raft foundations have been proposed to allow for group effect and soil-pile-raft interaction, most of them are concentrated on one type of loading rendering the applicability of these methods rather limited to cases under such loads. • Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. A floating foundation, or raft foundation as it's also called, is employed when a building is constructed on soil that contains a high mixture of clay, sand and water. Differential settlement 4. The raft, or spread, foundation spreads the load of the building across the ground. Recommendations are offered to outline good standard industry practice, to point out some pre-cautions that should be considered in the design and construction of storage tank foundations B. pdf), Text File (. 2012 Size: 46. It is not related to the direction the raft is moving. basudhar1, a. The spreadsheets are divided into the following groups: Lateral Analysis Group Wood Design Group Foundation Design Group Bridge Design Group Masonry Design Group Aluminum & Glass Design. COLOR: Cobalt/Black - High performance nylon webbing upper for support and durability- Three adjustable hook and loop fastenings provide a secure and comfortable fit- Non wicking, contoured EVA sockliner for added cushioning and support- Lightweight, durable fork shank ensures flexibility and stability- Compression-moulded EVA midsole with shank for ultimate cushioning- M-D Traction outsole. 2 Analysis of the piled raft. This paper sets out some principles of design for such foundations, including design for the geotechnical ultimate limit state, the structural ultimate limit state and the serviceability limit state. Go to CF1 page, and input data on the following row, such – Column load, Total Load, S. Raft Foundations - Design and Analysis with a Practical Approach, 2007 Gupta S. •Two Analytical Models on Elastic Foundation (1) Model 1 - Winkler Model - a linear force-deflection relationship is presumed FIGURE 5. This foundation will be used for a loose sand soil. 2 S DSD ρ x = 1. Internet Archive BookReader IS 2950-1: Code of practice for design and construction of raft foundations, Part 1: Design. @Download Epub ⚣ Kon-Tiki: Across the Pacific by Raft ë Am going to cross Pacific on a wooden raft to support a theory that the South Sea islands were peopled from Peru Will you come Reply at once That is how six brave and inquisitive men came to seek a dangerous path to test a scientific theory On a primitive raft made of forty foot balsa logs and named Kon Tiki in honor of a legendary sun. In order to reduce the costs and improve the overall performance of building systems, the static optimized design with variable rigidity of piled raft foundations has been widely used in recent years. The deign of raft foundation is simple. 5, Page 561, Reinf concrete A. Foundation design is the creation of a construction plan for a building foundation. Design of Beam-Slab Raft Foundation Bending moment and shear force diagrams for each slabs and beams in the short direction. Pump foundation design spreadsheet. For foundations of such high rise building, normally raft foundation, pile foundation or piled-raft foundation are used. They are used when column loads or other structural loads are close together and individual pad foundations would interact. pdf), Text File (. STAAD Foundation Advanced offers detailed output in spreadsheet format for Isolated, Combined, Octagonal, and Strap foundations. Hope the SAFE software from CSI is one of the good softwares for analysis and design for raft foundation. The raft can be designed with a universally distributed loading and linear loads at the edges and corners of the raft. engineeringbooks. RAFT FOUNDATION DESIGN - Free download as Excel Spreadsheet (. Both contact pressures of the raft and pore-water pressures beneath the raft varied considerably during the initial construction period but changed slightly after the end of construction. Foundation design excel sheets free download download center. DESIGN OF PILED-RAFT FOUNDATIONS BY MEANS OF A MULTI-PHASE MODEL ACCOUNTING FOR SOIL-PILE INTERACTIONS G. The behavior of pile raft foundation has been studied with many researchers. It might be too late now but thirdeye, the online building architect wrote a very good article on the breakdown cost of a raft foundation in that area. Design of Raft Foundation Spreadsheet Download Free. Complete Analysis & Design of a Mat or Raft Foundation – Analyses uniform thickness finite Mat or Raft Foundation with free ends and supported by a beam on elastic foundation. The choice between these types depends primarily upon the relative cost. this is a 19" pole (circular baseplate & pattern) on a 36" concrete foundation. This entails analysing the governing limit states, assessing the geotechnical characterisation of the soil deposit as well as deploying the appropriate modelling tool to study the behaviour of the chosen foundation system at each design phase. 1 This standard ( Part I ) covers the design of raft foundation based on conventional method (for rigid foundation) and simplified methods (flexible foundation) for residential and industrial buildings, store-houses. There is a considerable increase in bearing area of the foundation when a strip footing is placed. Overview SAFE is the ultimate tool for designing concrete floor and foundation systems. 1 (version 07/06/2009) Example 2. Closure to "contribution to piled raft foundation design"by widjojo A. STAAD Foundation Advanced analysis and design software addresses the building, plant, and tower industries by offering basic foundations such as isolated, combined, pile cap, and mat to specialized foundations including horizontal vessel foundations, tank annular ringwall, lateral analysis of pile/drilled pier, and state-of-the-art vibrational. Raft (Xeelee 1) Read more. Spreadsheet to Design of Raft Foundation with necessary calculation steps. The total load on building (dead + live + other loads + self weight of building and foundation) is estimated. In the former, it is assumed that load of superstructure is transmitted to the underlying ground directly by the raft. Design Example It is desired to design the raft slab shown below to support the column loads for a building as given below. Design of Mat/Raft Foundation • Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. 7 Foundations on rock; additional design considerations (3) §6. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally. The raft, or spread, foundation spreads the load of the building across the ground. Pump foundation design spreadsheet. Get efficient foundation design and documentation using plant-specific design tools, multiple design codes with U. com/download/887rvjurcz9. It is a highly specialized function and usually performed by a structural engineer. In this particular post we are going to consider the analysis and design of the same foundation using manual calculations according to the principles of the Eurocodes. DESIGN OF RAFT FOUNDATION. Optimum Design of Pile Raft Foundation on Pile-Soil Interaction Wu, Su Juan; Xiong, Zhong Ming ; Xu, Yuan Gang; Abstract. 5 m below the ground surface is subjected to a uniform pressure of 150 kPa. I still think it is a mis-interpretation of the IS 2950 clause. The spreadsheet completes all the calculations required for a raft foundation design in accordance with BS EN 1997 and BS EN 1992. Raft Foundations Where the nature of the ground is such that spread foundations (pad or strip foundations) cover a large part of the area covered by the structure, a reinforced concrete raft foundation covering the whole area may be more effective. Micropile Design Spreadsheet. In the former, it is assumed that load of superstructure is transmitted to the underlying ground directly by the raft. Please create a new list with a new name; move some items to a new or existing list; or delete some items. Design Guide Existing Foundation Capacity Determination. When determining which foundation is the most economical (foundation), […] Filed Under: Civil , Foundation. Select All Clear All Save to: Your list has reached the maximum number of items. As a piled raft foundation takes into account both the pile and the cap acting as a raft footing in carrying the imposed load. How to Make a Fantasy Baseball Spreadsheet. This book examines alternative design procedures for plain and piled raft foundations. Design of Raft Foundation Spreadsheet Download Free. 2019 Agu 6 - Detail Construction Process Of Raft Foundation. The use of spreadsheets facilitates the work for the designer, to estimate the dimensions of foundation, thus evaluating the influence of various parameters. 3m and the German floor will be completed soon for about 1. • The monolithic footing and foundation shown here acts as a floating raft for the building above. It was rated 4. STAAD Foundation Advanced analysis and design software addresses the building, plant, and tower industries by offering basic foundations such as isolated, combined, pile cap, and mat to specialized foundations including horizontal vessel foundations, tank annular ringwall, lateral analysis of pile/drilled pier, and state-of-the-art vibrational. Discover more freelance jobs online on PeoplePerHour!. In a raft, the entire basement floor slab acts as the foundation; the weight of the building is spread evenly over the entire footprint of the building. I still think it is a mis-interpretation of the IS 2950 clause. Design of Pad Foundations 223 H = horizontal shears = 2Hx and EH where and M* are due to eccentric surcharge. In this particular post we are going to consider the analysis and design of the same foundation using manual calculations according to the principles of the Eurocodes. Re: Details about raft foundation for KLCC jason irons 12:29:30 11/18/2003 (0) Re: Details about raft foundation for KLCC aslina 05:40:10 6/16/2003 (3) Re: Details about raft foundation for KLCC mohamed shareef 21:12:34 8/03/2003 (0) Re: Details about raft foundation for KLCC M. design of an economic foundation was discussed. Select a system of units: SI: US: Select a design theory. Download Free DEMO Updated February 18, 2019 SoilStructure Mat or Raft Foundation simplifies the calculation of combined footings and Mats or Rafts. QIB: A rectangular raft of size 20 x 10 m founded at a depth of 2. Detailed explanation for Design and Detailing settings available a. Assume the center of the area is the origin of coordinates (0, 0). Foundation on Shrinking (Expansive) Soils. Case Study Conclusion – Piled Raft Foundation The summary data are very interesting and deserve the following comments. The raft can be designed with a universally distributed loading and linear loads at the edges and corners of the raft. The advantages of raft foundation are as follows, 2. Pole Foundation Design with Spreadsheet. The spreadsheet completes all the calculations required for a raft foundation design in accordance with BS EN 1997 and BS EN 1992. STAAD Foundation Advanced analysis and design software addresses the building, plant, and tower industries by offering basic foundations such as isolated, combined, pile cap, and mat to specialized foundations including horizontal vessel foundations, tank annular ringwall, lateral analysis of pile/drilled pier, and state-of-the-art vibrational. If you would like to carry out another mail merge from that exact same spreadsheet, be sure to delete that text from the Merge Status column of each receiver you’d love to email. Types of Mat/Raft Foundation. 3 ρ 2Q E2+/-0. Jun 3, 2019 - Raft foundations (sometimes known as MatFoundations) are a large concrete slab which can support a number of columns and walls. The obvious solution is a concrete raft foundation laid on top of external insulation. • Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. Trenches are dug into the ground and then reinforced with steel. Both contact pressures of the raft and pore-water pressures beneath the raft varied considerably during the initial construction period but changed slightly after the end of construction. Raft (Xeelee 1) Read more. You may use architectural drawing to import data in RAFT and analyze, design and estimate the building floor cost Instantly. This is partially because piled raft foundations are considered as raft foundations in the current design practice. Raft Foundations Design and Analysis. Go to Google Play Now ». xls 4shared for all, at: 2012-01-23T08:28:37. 8, STAAD FOUNDATION,RISA FOUNDATION, ANSYS, etc. 1a is made from concrete with a weight density of 25. Most piled-raft foundation designs are based on empirical methods and the experience of designers. This foundation will be used for a loose sand soil. How to Make a Fantasy Baseball Spreadsheet. 5, Page 561, Reinf concrete A. Prakoso and fred H. a software for analysis, design / estimation / costing of rcc raft foundation including autocad drawing of foundation plan, schedules of raft beams & slabs pin Example 4: Design of a circular raft for a cylindrical core. he design loads for the raft foundation are obtained from structural analysis. The research findings should enhance the current database on overall foundation behavior. The beams is spread out under the whole building, and therefore lowers the contact pressure on the ground compared to other foundation types. Discover more freelance jobs online on PeoplePerHour!. For the Modulus of subgrade reactions browse the Experts-Dedicated Forum-Er. The raft will be used for economical consideration. This document presents an FPSF design procedure for slab-on-grade, stem wall foundations. Project : Raft Foundation Design Ref: Date : Design By : Checked By : Raft design assume raft thk fy fcu Assume reinforcement dia. RAFT FOUNDATION DESIGN - Free download as Excel Spreadsheet (. A simple example would be fabrication waste material that is a material cost to the project. Design of Raft Foundation Page | 13 3. If you would like to carry out another mail merge from that exact same spreadsheet, be sure to delete that text from the Merge Status column of each receiver you’d love to email. com/download/887rvjurcz9. Design Spreadsheets Raft foundations (sometimes known as Mat Foundations ) are a large concrete slab which can support a number of columns and walls. 87fyz There fore use As provided As min. Lateral Earth Pressures on Rigid Walls. General The design of foundations of structures such as buildings, bridges, and dams generally requires a knowledge of such factors as (a) the load that will be transmitted by the superstructure to the foundation system, (b) the requirements of the local building code, (c). A foundation must bear the structural loads imposed upon it and allow proper drainage of ground water to prevent expansion or weakening of soils and frost heaving. In this particular post we are going to consider the analysis and design of the same foundation using manual calculations according to the principles of the Eurocodes. com (FREE!) Combined Footing Design calculator, Combined foundation design calculator, excel spreadsheet, download civil engineering sheetsfree, free download, 2017,civil engineering, courses, articles. Plain slab rafts. Another design method still concentrates on providing adequate axial capacity from the piles to carry the structural load and the bearing capacity of the raft is neglected. pdf), Text File (. STAAD Foundation Advanced analysis and design software addresses the building, plant, and tower industries by offering basic foundations such as isolated, combined, pile cap, and mat to specialized foundations including horizontal vessel foundations, tank annular ringwall, lateral analysis of pile/drilled pier, and state-of-the-art vibrational. So far, the designer of the raft or the piled raft foundations in this area has very little information available for the evaluation of both bearing capacity and settlement in the preliminary design stage. The strip raft foundation has columns which are of lesser thickness & depth, and use minimal steel than what you have in regular RCC column footings but then it goes through the entire set of house walls and is 3-4. Raft foundation design based on BS8110. The raft foundation alias mat foundation is a type of foundation system that is utilized frequently. The deign of raft foundation is simple. 7 Most Important Skills for a Civil Engineer to Succeed. Most piled-raft foundation designs are based on empirical methods and the experience of designers. (sft), Area of the footing provided (sft). The combined pile raft foundation (with bored piles or jet grouting columns) was presented with a preliminary design to reduce settlements in SLS conditions. The program analysis and design results for each load case are made available through detailed output. ABSTRACT: Piled raft foundations are increasingly being recognised as an economical and effective foundation system for tall buildings. design of an economic foundation was discussed. xls 4shared for all, at: 2012-01-23T08:28:37. Download Code Design Calculations of Raft Foundation. Pump foundation design spreadsheet. In this short training video, you'll learn how to use ProtaStructure and ProtaDetails for the design of; - Pile Caps - Pad Footings - Strip Footings - Combined Pile Caps, Pad and Strip Footings - Raft Foundations - Piled Raft Foundations - Soil Structure Interaction Host: Nigel Watts - Prota Asia Managing Director. Department of C iv il Engineering January 1991. STAAD Foundation Advanced analysis and design software addresses the building, plant, and tower industries by offering basic foundations such as isolated, combined, pile cap, and mat to specialized foundations including horizontal vessel foundations, tank annular ringwall, lateral analysis of pile/drilled pier, and state-of-the-art vibrational. This entails analysing the governing limit states, assessing the geotechnical characterisation of the soil deposit as well as deploying the appropriate modelling tool to study the behaviour of the chosen foundation system at each design phase. “Completion of the first raft is a big stepping stone,” said Paul O’Connor, Senior Scientist at Brookhaven Lab’s Instrumentation Division. (The method to be used depends on the relative rigidity of the raft with respect to the foundation soil. The procedure for the conventional design of a raft foundation consists of the following steps. In examining the different types of foundations the first that we review is the raft foundations. C, Area of the footing reqd. Raft foundations or mat foundations are typically large foundations usually supporting several columns in two or more rows. Design of Mat/Raft Foundation • Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. Discover more freelance jobs online on PeoplePerHour!. Therefore, the foundation is regarded as a pile group in early stages of construction, while the foundation behaves as a piled raft after completion of the raft construction. In the 1920s and 1930s, this type of foundation was common, with brick footings also permitted. Lateral Earth Pressures on Rigid Walls. A raft foundation is similar to a floor slab with beams supporting the slab, except that it is upside down. The idea of using piled raft foundation is first introduced by Davis and Poulos (1972). Raft foundation design based on BS8110. The thickness and the amount of reinforcement of the raft should be selected in a such way to prevent development of cracks in the slab. The mat foundation might be more economical. ABSTRACT: Piled raft foundations are increasingly being recognised as an economical and effective foundation system for tall buildings. Design of Structures Foundations for Vibrating Machines. We design the most suitable and economical concrete structure for your specific project. When students use Excel to draw a trendline to their data, they often are confused by how one can evaluate the quality of that fit and how one can introduce a different function for the fit. 0 Why Raft should be used: If a single square footing need to be designed under the maximum axial load that is occurred in columns type 4. This will help you to some extent to understand the Raft foundation design. Pole Foundation Design with Spreadsheet. The performance of piled raft foundation under seismic loads is a very important subject that can be effective on stability of structure. Obtaining and selecting design parameters required for foundation design Selection of appropriate foundation types for various types of development and soil profiles Design of spread footings, piled foundations and raft foundations Applicable standards and statutory requirements. Shop for Books on Google Play. DESIGN LIMITS OF MACHINE FOUNDATION FOR EMPIRICAL METHODS The design of block foundation for centrifugal or reciprocating machine starts with preliminary sizing of the block, which has been found to result in acceptable configuration as (Arya et al. Practical design of piled raft foundations is made for the light bridges and five story buildings on thick clay deposits to discuss the long-term settlement, and it is found that the piled raft is well. A raft foundation is similar to a floor slab with beams supporting the slab, except that it is upside down. Raft foundation design based on BS8110. Design Example It is desired to design the raft slab shown below to support the column loads for a building as given below. design of raft foundation The mat is a joint basis, may include the entire facility space so carries the walls, columns and called then for «general mat» may include part of the facility space and called then for «partial mat» which is transferred to the soil at least three columns a load does not fall on the straightness one. com (FREE!) Combined Footing Design calculator, Combined foundation design calculator, excel spreadsheet, download civil engineering sheetsfree, free download, 2017,civil engineering, courses, articles. Usually, the limiting design load with transmission line foundations is the uplift load. Foundation design excel sheets free download download center. 4, is now available with more enhancements, especially for the 3D drawings. The properties used in the analysis and the design of this raft foundation are shown in table 4. In traditional foundation design, it is customary to consider first the use of shallow foundation such as a raft. 3: Development of modified static and seismic design methodology of piled-raft foundation. Hope the SAFE software from CSI is one of the good softwares for analysis and design for raft foundation. Once spreadsheets were validated, different factors involved in the foundation design for combined piled raft foundations were evaluated, by employing the abilities provided by card files elaborated by MathCad. The spreadsheet will even allow you to know how much taxation which you will cover on the property depending on the budget tax changes, especially Section 24 mortgage debt relief. In this short training video, you'll learn how to use ProtaStructure and ProtaDetails for the design of; - Pile Caps - Pad Footings - Strip Footings - Combined Pile Caps, Pad and Strip Footings - Raft Foundations - Piled Raft Foundations - Soil Structure Interaction Host: Nigel Watts - Prota Asia Managing Director. Research output: Contribution to journal › Comment/debate. It explores the assumptions that are made in the analysis of soil - structure interaction, together with the associated calculation methods. It might be too late now but thirdeye, the online building architect wrote a very good article on the breakdown cost of a raft foundation in that area. Combined Footing Design EXCEL Spreadsheet EXCEL spreadsheet calculator of cantilevered sheet-pile wall penetrating sandy soils. Consider the average uniform value of pressure act on each continuous slab. Raft foundation is a thick concrete slab reinforced with steel which covers the entire contact area of the structure like a thick floor. txt) or read online for free. The book gives many examples of project applications covering a wide range of structural forms and ground conditions. And this is a 6 bdrms duplex. this is a 19" pole (circular baseplate & pattern) on a 36" concrete foundation. Foundations for Steel Towers and Chimneys. Given below is an…. Design of Structures Foundations for Vibrating Machines. Spreadsheets donated us the possible to input, transform, and estimate anything we required and store it digitally for reprocess. Shallow Foundations. In our last post, we considered the analysis of beam and raft foundation of a G+1 building using Staad Pro software. Show on map How to get. The program was developed as part of a research on the reliability of the use of SPT in the shallow foundation design. The behavior of pile raft foundation has been studied with many researchers. xls - Free download as Excel Spreadsheet (. The program analysis and design results for each load case are made available through detailed output. In the primary design stage, a large raft size was avoided keeping in view the soft subsoil condition and better. (The method to be used depends on the relative rigidity of the raft with respect to the foundation soil. In this section, only the rigid method will be covered. •Two Analytical Models on Elastic Foundation (1) Model 1 - Winkler Model - a linear force-deflection relationship is presumed FIGURE 5. Ultimate Raft Foundation Design Solutions - Pretoria - Gauteng. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally used strip or trench footings. The development comprises the construction of an approximately 120 story high-rise tower interlinked by low level podium structure housing up to 7 basement levels. 5 m below the ground surface is subjected to a uniform pressure of 150 kPa. There is a considerable increase in bearing area of the foundation when a strip footing is placed. Closure to "contribution to piled raft foundation design"by widjojo A. This is the part-3 of the whole course, so see all the parts to understand completely. They are used when column loads or other structural loads are close together and individual pad foundations would interact. Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and post-tensioned slab design. Despite such design assumptions, it is common for a raft to be part of the foundation system (e. If you want to be familiar with the detailed process necessary for creating the design of a RCC Corbel in excel based spreadsheet following ACI 95, then you should go through the following construction video tutorial. It is the type of shallow foundation. Based on the field measurement results, the piled raft foundation design proved to be appropriate. In some cases, the spread footing itself has to be placed covering more than half of the structural plan area. pdf), Text File (. txt) or read online for free. Foundation design is the creation of a construction plan for a building foundation. 2 Design Issues As with any foundation system, a design of a piled raft foundation requires the consideration of a number of issues, including: 1. Design slabs, beams in the other directions. Nasurudeen 01:11:04 8/02/2003 (0). The advantages of raft foundation are as follows, 2. In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. This document presents an FPSF design procedure for slab-on-grade, stem wall foundations. Show on map How to get. While the far more common concrete foundation requires separate measures to ensure good soil drainage, the rubble trench foundation serves both foundation functions at once. Prakoso and fred H. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally. We specialize in commercial office buildings and residential projects, constructing concrete raft foundations,slabs,columns,beams and staircases. This book examines alternative design procedures for plain and piled raft foundations. Pole Foundation Design with Spreadsheet. In this particular post we are going to consider the analysis and design of the same foundation using manual calculations according to the principles of the Eurocodes. They are: Conventional Method. There seems to be no satisfactory reason for specifying minimum thickness of raft as 1m. The properties used in the analysis and the design of this raft foundation are shown in table 4. Optimum Design of Pile Raft Foundation on Pile-Soil Interaction Wu, Su Juan; Xiong, Zhong Ming ; Xu, Yuan Gang; Abstract. De3 ABSTRACT: Design of a raft foundation … Pile foundation analysis and design using experimental. 3: Development of modified static and seismic design methodology of piled-raft foundation. Design of raft footings is detailed in the following steps. Rangarajan where you can get the values. His practice has evolved into Engineering with the Spreadsheet, a valuable manual for engineers working with Excel. Raft moments and shears for the structural design of the raft 5. Recommendations are offered to outline good standard industry practice, to point out some pre-cautions that should be considered in the design and construction of storage tank foundations B. Explain step by step how to design a mat or raft foundation? When would you opt for raft foundation? Expert Answer. They spread the load imposed by a number of columns , walls , and so on, over a large area , and can be considered to ‘ float ’ on the ground in a similar way to a raft. Showing all editions for ‘Design applications of raft foundations’ Sort by: Refine Your Search Year. They are typically formed by reinforced concrete slabs that cover a wide area , often the entire footprint of a building. Sunrise Powerlink Steel Cap Micropile Foundation (Patent Pending). mat or raft foundation is a large concrete slab supporting several columns in two or Geotechnical Design of Deep Foundations -. Download https://www. June 12th, 2018 - Design Of Rectangular Ground Design of Raft Foundation Excel Sheet Raft foundation is a thick concrete slab reinforced Sheet Pile Design Spreadsheet''Slabs On Ground Design Spreadsheet pdfsdocuments2 com June 21st, 2018 - This guide has extracted the main points and puts together the whole process of. Concrete Box Culvert analysis and Design Spreadsheet 4 January 2018 Off. In the design of foundations in piled rafts, a great number of unknown facts are determined in order to obtain a rational foundation, which in turn meets the requirements of the project. We design the most suitable and economical concrete structure for your specific project. The book gives many examples of project applications covering a wide range of structural forms and ground conditions. Download free excel spreadsheets for foundat etc [:=Read Full Message Here=:] Title: excel spreadsheet for raft foundation design Page Link: excel spreadsheet for raft foundation design - Posted By: wazilmankara. 36 in Books, Civil Engineering Books, Civil Engineering Downloads, Downloads, Foundation Construction, Foundation Engineering, Raft foundation Foundation engineering has been practiced as an art, without help of science, since time immemorial up to 1920 when it had achieved a consi. Raft foundation is a thick concrete slab reinforced with steel which covers the entire contact area of the structure like a thick floor. The Road to Maturity People, process and tools create the foundation for insight and agility—helping to build a better way for today and pave a path towards tomorrow. The raft can be designed with a universally distributed loading and linear loads at the edges and corners of the raft. com/download/887rvjurcz9. QIB: A rectangular raft of size 20 x 10 m founded at a depth of 2. Ultimate load capacity for vertical, lateral and moment loadings 2. 87fyz There fore use As provided As min. However, piled-raft foundations are massive and expensive. and metric bar sizes, design optimization, and automatic drawing generation. They are: Conventional Method. This features enables you to verify foundation design results at every single design step. There is a considerable increase in bearing area of the foundation when a strip footing is placed. His practice has evolved into Engineering with the Spreadsheet, a valuable manual for engineers working with Excel. 0 stars based on 35 reviews This spreadsheet helps you calculate isolated rectangular footing. The research findings should enhance the current database on overall foundation behavior. i was having some issues determining the correct design to use for the embedment lengths. Download Free DEMO Updated February 18, 2019 SoilStructure Mat or Raft Foundation simplifies the calculation of combined footings and Mats or Rafts. • The monolithic footing and foundation shown here acts as a floating raft for the building above. A pad foundation was designed for individual columns along lines C and D of the hotel plan in the previous section. This spreadsheet performs shallow foundation design using data from the Standard Penetration Test. 1 optimal cost design of rigid raft foundation p. com - the best site for laptops and mobile phone specs, insurance, user-review, rooting, flashing, firmware and stock ROM Download and Mobile Phone prices in Nigeria, Ghana, Kenya, India, Brazil and US Dollar. The main aim of this dissertation is to done the foundation analysis of circular water tank and cost comparison for different type of foundation required like annular raft and solid circular type. This video features the design of Raft (Mat) foundations and Pile Raft: 1. Geotechnical and Structural Design. The document does state that the minimum thickness of raft is 1m. All columns are 230 x 450mm, the grade of concrete (f ck ) is 30 N/mm 2 , and the yield strength of the reinforcement (f yk ) is 500 N/mm 2. Slabs and raft foundations are inserted in horizontal plans of an active story (in the top view). Such a foundation makes use of both the raft and the piles, and is referred to here as a pile-enhanced raft or a piled raft. Shop for Books on Google Play. This kind of foundation is used where soil strength is low or where column loads are large but where piles or caissons are not used. Now, spreadsheets may be downloaded from the web, without having to cover the program. 5L + E • Minimum downward load: 0. How to Work with Following Spreadsheet. This type of foundation spreads the load of the building over a larger area than other foundations, lowering the pressure on the ground. pdf), Text File (. This book examines alternative design procedures for plain and piled raft foundations. A Raft Slab Design On Grade Foundations Are Stronger With Additional Ribs. This paper develops an approximate analytical method to. txt) or read online for free. The CivilWeb Design of Raft Foundation Spreadsheet is an easy to use spreadsheet for the design of simple raft foundations. Ultimate load capacity for vertical, lateral and moment loadings 2. (sft), Area of the footing provided (sft). Recommended Practice for the Design of Residential Foundations – Version 1 - 3 of 17- Section 2. The raft can be designed with a universally distributed loading and linear loads at the edges and corners of the raft. com (FREE!) Combined Footing Design calculator, Combined foundation design calculator, excel spreadsheet, download civil engineering sheetsfree, free download, 2017,civil engineering, courses, articles. Discover more freelance jobs online on PeoplePerHour!. A pad foundation was designed for individual columns along lines C and D of the hotel plan in the previous section. There are approx 21714 users enrolled with this course, so don’t wait to download yours now. design of raft foundation The mat is a joint basis, may include the entire facility space so carries the walls, columns and called then for «general mat» may include part of the facility space and called then for «partial mat» which is transferred to the soil at least three columns a load does not fall on the straightness one. We specialize in commercial office buildings and residential projects, constructing concrete raft foundations,slabs,columns,beams and staircases. Maximum settlement 3. Obtaining and selecting design parameters required for foundation design Selection of appropriate foundation types for various types of development and soil profiles Design of spread footings, piled foundations and raft foundations Applicable standards and statutory requirements. RE: raft foundation design ishvaaag (Structural) 2 Mar 10 05:01 The foundation is where soil-structure interaction happens; hence it is a difficult effort to get any proper "modern" modeling of a separate foundation, mat or whatever, that doesn't include the structure above itself. Foundation on Shrinking (Expansive) Soils. In examining the different types of foundations the first that we review is the raft foundations. How to Make a Fantasy Baseball Spreadsheet. Now, spreadsheets may be downloaded from the web, without having to cover the program. Download Code Design Calculations of Raft Foundation. 7622 (1-800-YOUR-MAB) Fax: 517. 87fyz There fore use As provided As min. As a piled raft foundation takes into account both the pile and the cap acting as a raft footing in carrying the imposed load. edu is a platform for academics to share research papers. June 12th, 2018 - Design Of Rectangular Ground Design of Raft Foundation Excel Sheet Raft foundation is a thick concrete slab reinforced Sheet Pile Design Spreadsheet''Slabs On Ground Design Spreadsheet pdfsdocuments2 com June 21st, 2018 - This guide has extracted the main points and puts together the whole process of. Abutment and Retaining Wall Design Spreadsheet This spreadsheet demonstrates how to efficiently design abutment or. 5L + E • Minimum downward load: 0. How to use excel sheet to design a Raft Foundation Raft foundations also known as Mat Foundations are huge concrete slabs upon which the columns and walls in a construction are laid on efficiently. When students use Excel to draw a trendline to their data, they often are confused by how one can evaluate the quality of that fit and how one can introduce a different function for the fit. Rcc beam design and computer analysis free download download center. 3 ρ 2Q E2+/-0. The total load on building (dead + live + other loads + self weight of building and foundation) is estimated. It includes Autocad drawing possibilities for the foundation plan, schedules of RAFT beams and slabs, and much more. In such a condition piled raft foundation can be considered a best solution in which shorter piles and raft of lesser thickness can be provided. (The method to be used depends on the relative rigidity of the raft with respect to the foundation soil. Raft Foundation Detail. Microsoft excel spreadsheets for foundation, concrete, masonry, and wood design and lateral analysis (wind, seismic, etc. Raft Crete specialize in construction of the Raft Foundation which include the Waffle Raft patented system that has been researched and tested by leading engineering firms in the raft design. Raft Foundations: The Soil-line Method of Design with Worked Examples Concrete series: Author: Arthur Lemprière Lancey Baker: Edition: 2: Publisher: Concrete Publications, 1942: Original from: the University of California: Digitized: Mar 11, 2008: Length: 141 pages : Export Citation: BiBTeX EndNote RefMan. 7 of the 2006 International Building Code. design of raft foundation. 2 Design Issues As with any foundation system, a design of a piled raft foundation requires the consideration of a number of issues, including: 1. In the 1920s and 1930s, this type of foundation was common, with brick footings also permitted. In some cases, the spread footing itself has to be placed covering more than half of the structural plan area. Benefits of raft foundation. the design of the foundation is performed by a licensed engineer. g because of the need to. design detail. Sometimes area covered by raft may be greater than the contact area depending on the bearing capacity of the soil underneath. of the foundation. id 0260003538798. Therefore, the foundation is regarded as a pile group in early stages of construction, while the foundation behaves as a piled raft after completion of the raft construction. Concrete slabs - Raft foundations - concrete columns - concrete beams - concrete staircases. In Brazil the ratio of tendon cost x rebar cost is 1. Eng Ahmad Al Omari , Eng Essam Ghaith Eng & Qutaiba Hameedi. If you missed the last post, you […]. Therefore, I decided to design a deep foundation (Piles beneath the Raft). txt) or read online for free. & foundation with no exceptional risk or difficult soil or loading conditions 2 Routine design & construction methods Negligible risk of instability or ground movements Ground conditions known No excavation below water table Small and relatively simple structures… with negligible risk 1 GC Includes… Design requirements Design procedure. Both contact pressures of the raft and pore-water pressures beneath the raft varied considerably during the initial construction period but changed slightly after the end of construction. WinRECOL analyzes, designs or checks a. ABSTRACT: The process followed in designing the piled raft foundation of a tall building is discussed. Raft Foundation Excel Sheet Raft foundation is a thick concrete slab reinforced with steel which covers the entire contact a Abutment and Retaining Wall Design Spreadsheet-Download Free. Load v/s settlement curve developed by Koizumi and Ito's (1967) actual test and by spreadsheets. Raft foundations are used to spread the load from a structure over a large area, normally the entire area of the structure. It was in the earlier 1920s that a concerted effort was made to study and understand the physical laws governing the behavior of sub surface materials, i. txt) or read online for free. 36 in Books, Civil Engineering Books, Civil Engineering Downloads, Downloads, Foundation Construction, Foundation Engineering, Raft foundation Foundation engineering has been practiced as an art, without help of science, since time immemorial up to 1920 when it had achieved a consi. The raft foundation alias mat foundation is a type of foundation system that is utilized frequently. Explain step by step how to design a mat or raft foundation? When would you opt for raft foundation? Expert Answer. Raft Foundation Design and Analysis with a Practical Approach PDF book by Sharat Chandra Gupta. Once spreadsheets were validated, different factors involved in the foundation design for combined piled raft foundations were evaluated, by employing the abilities provided by card files elaborated by MathCad. Such raft foundation undergoes excessive settlement. 141, 89 figure illustrations, slight rippling to fore-edge. The use of spreadsheets facilitates the work for the designer, to estimate the dimensions of foundation, thus evaluating the influence of various parameters involved in the design, so as to finally use. seeking help to design this type of foundation. This section demonstrates the design of a raft foundation for the hotel. Andrew, PE. 4 out of 5 by approx 10828 ratings. Foundation Design for Building and Structures; Manual of Concrete Design, ACI ; One-way Slab Design Spreadsheet per. The obvious solution is a concrete raft foundation laid on top of external insulation. GEOTEC Office & ELPLA, Piled-Raft Foundation Design Software Version 11. Given Data: 1 Grade of Steel Fe 415 2 Grade of Concrete M 15. 7444 Toll-Free: 800. This book examines alternative design procedures for plain and piled raft foundations. xls from PAVE 233 at National University of Sciences & Technology, Islamabad. Raft foundations alternatively known as mat foundations are formed by large and solid reinforced concrete slabs having identical thickness (normally 150 mm to 300 mm) that expands over an extensive area, often the whole footprint of a building (under the entire building). Because of the way in which they're constructed, floating foundations spread the weight of the structure over the entire base of the building rather than at scattered support spots. 87fyz There fore use As provided As min. Soil Line Method. Dear Seniors! I designed a shallow raft foundation but it seems to be unstable due to low SBC. Select All Clear All Save to: Your list has reached the maximum number of items. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally used strip or trench footings. It is possible to do both. Raft Foundation Analysis and Design Example - Free download as PDF File (. We design the most suitable and economical concrete structure for your specific project. The combined pile raft foundation (with bored piles or jet grouting columns) was presented with a preliminary design to reduce settlements in SLS conditions. How to Make a Fantasy Baseball Spreadsheet. Delivery Subsidy Program – A Path to Clean, Safe & Respectful Deliveries. For stiffened raft slabs, there are internal and edge beams used in the whole foundation. RAFT FOUNDATION DESIGN - Free download as Excel Spreadsheet (. If the cost of a deep foundation (Pile foundation) is higher than the raft foundation we use to make the structure economical. Raft Foundations - Design and Analysis with a Practical Approach, 2007 Gupta S. Raft Foundation: Mat or raft foundation is a huge slab assisting several walls and pillars beneath the whole structure or a huge portion of the structure to reduce the contact pressure in comparison with spread footing. The slab is extended underneath the whole building or somewhat a big part of it with the purpose of minimizing the contact pressure contrary to the. geotechnical engineering information b. Download Excel Sheet To Design Raft Foundation. Field Tests on Piles. Ive obtained initial quote from Kore, Isoquick and AFT, would like to explore supply only option for cost comparison. The CivilWeb Design of Raft Foundation Spreadsheet is an easy to use spreadsheet for the design of simple raft foundations. Fined the project Combined Footing Design Excel Sheet and open it. Foundations for Steel Towers and Chimneys. a software for analysis, design / estimation / costing of rcc raft foundation including autocad drawing of foundation plan, schedules of raft beams & slabs pin Example 4: Design of a circular raft for a cylindrical core. Excel sheet to Design of Raft Foundation Raft foundation is a reinforced concrete slab under the whole of a building or extension, 'floating' on the ground as a raft floats on water. Shop for Books on Google Play. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally used strip or trench footings. Quantity calculations beyond design details are often necessary to determine a reasonable price to complete the overall scope of work for the cost estimate. Pressure under the raft might not be uniform. Go to CF1 page, and input data on the following row, such – Column load, Total Load, S. Today, the spreadsheet is an essential tool for engineers. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally. A raft foundation normally consists of a concrete slab which extends over the. Many types of software are available to design mat foundation some are like ABAQUS V6. This course was created by Nick Marsh. There is a considerable increase in bearing area of the foundation when a strip footing is placed. If it is not adequate, deep foundation such as a fully piled foundation is used instead. If you want to be familiar with the detailed process necessary for creating the design of a RCC Corbel in excel based spreadsheet following ACI 95, then you should go through the following construction video tutorial. Plain slab rafts. Raft Foundation: Mat or raft foundation is a huge slab assisting several walls and pillars beneath the whole structure or a huge portion of the structure to reduce the contact pressure in comparison with spread footing. 4 FOUNDATION DESIGN The Italian Construction Code (2008) covers mixed foundations and determines that where the raft alone is capable of satisfying the ULS, the piles can act as settlement reducers and their design should ensure the satisfaction of the SLS. Engineering-international. They spread the load over the whole area of the foundation, in effect ‘floating’ on the ground. txt) or read online for free. There are following types of mat foundation, Flat plate raft; Plate thickened under columns; Two-way slab and beam. Except the foundation, all the other aboveground components are precast members that are assembled at the project site to build a wind turbine. 1a is made from concrete with a weight density of 25. It explores the assumptions that are made in the analysis of soil - structure interaction, together with the associated calculation methods. ABSTRACT: The process followed in designing the piled raft foundation of a tall building is discussed. Slabs and raft foundations are inserted in horizontal plans of an active story (in the top view). xls), PDF File (. Design of Raft Foundation 3. the foundation is either flush with grade or 3. Although simplified design methods for piled raft foundations have been proposed to allow for group effect and soil-pile-raft interaction, most of them are concentrated on one type of loading rendering the applicability of these methods rather limited to cases under such loads. design of piled raft foundation. A floating foundation, or raft foundation as it's also called, is employed when a building is constructed on soil that contains a high mixture of clay, sand and water. They are: Conventional Method. They are used when column loads or other structural loads are close together and individual pad foundations would interact. This second edition, gives examples of the application of the soil-line method, explaining the practical application of the subject, giving particular attention to the design of raft foundations for framed buildings. 0 Why Raft should be used: If a single square footing need to be designed under the maximum axial load that is occurred in columns type 4. Shop for Books on Google Play. o Determine pressure distribution. Raft Foundations - Design and Analysis with a Practical Approach, 2007 Gupta S. Title: Design of Post-Tensioned Raft and Piled Raft Foundation in the Amazon Region Author: SAA Created Date: 8/29/2016 10:05:09 AM. In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 被如下文章引用: TITLE: Soil-Structure Interaction Analysis of Tall Reinforced Concrete Chimney with Piled Raft and Annular Raft under Along-Wind Load; AUTHORS: B. So far, the designer of the raft or the piled raft foundations in this area has very little information available for the evaluation of both bearing capacity and settlement in the preliminary design stage. de Buhan Université Paris-Est, UR Navier (ENPC-LCPC-CNRS), Ecole des Ponts ParisTech, Marne-la-Vallée, France E. Advantages of Raft Foundation 1. Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. They spread the load over the whole area of the foundation, in effect ‘floating’ on the ground. 8 Structural design of foundations (6) §6. Types of Mat/Raft Foundation. 65 MB Type of compression: zip Total downloads: 4968 By: tabtepi File checked: Kaspersky Download speed: 13 Mb/s DATE: 9. ·Rules for rounding off numericalvalues. Andrew, PE. File: xls format footing design Date added: 25. Capitol Avenue Lansing, MI 48906. A foundation must bear the structural loads imposed upon it and allow proper drainage of ground water to prevent expansion or weakening of soils and frost heaving. waffle slab foundation design MAT is. In this short training video, you'll learn how to use ProtaStructure and ProtaDetails for the design of; - Pile Caps - Pad Footings - Strip Footings - Combined Pile Caps, Pad and Strip Footings - Raft Foundations - Piled Raft Foundations - Soil Structure Interaction Host: Nigel Watts - Prota Asia Managing Director. A simple example would be fabrication waste material that is a material cost to the project. As a piled raft foundation takes into account both the pile and the cap acting as a raft footing in carrying the imposed load. Engineering-international. foundation design for an earthquake resistance is one of the most important parts to be considered in the structural analysis and design. Showing all editions for ‘Design applications of raft foundations’ Sort by: Refine Your Search Year. Depending on the ground condition different types of shallow foundations methods are used to construct structures. The slab is spread out under the entire building or at least a large part of it which lowers the contact pressure compared to the traditionally used strip or trench footings. Since then it has expanded to one of the leading Raft Construction companies in South Africa. Mat becomes raft • Unstable soils having high groundwater conditions can demand an approach to foundations that adds virtually no extra weight to the soil. So if you are considering the construction of an RCR, first check the required finish floor level and measure down to the existing outside ground level. Andrew, PE. 2 S DSD ρ x = 1. pdf), Text File (. design of raft foundation. Showing all editions for ‘Design applications of raft foundations’ Sort by: Refine Your Search Year. Therefore, developing methodologies for their optimal design could significantly help minimize their otherwise high construction costs and would make them more feasible and common practice. The raft, or spread, foundation spreads the load of the building across the ground. Engineering International - Structural Design Spreadsheets. This paper sets out some principles of design for such foundations, including design for the geotechnical ultimate limit state, the structural ultimate limit state and the serviceability limit state. This paper develops an approximate analytical method to. EN 1992-1: 2004; Pile Cap Design Spreadsheet to Eurocode Spreadsheet Calculator per. Current design practice is based on conventional group pile or block failure theory, that ignore the bearing contribution from the raft. 8 Structural design of foundations (6) §6. Raft foundations are created from reinforced concrete slabs of uniform thickness, covering a wide area. Select a system of units: SI: US: Select a design theory. The procedure for the conventional design of a raft foundation consists of the following steps. Michigan Association of Broadcasters 820 N. Foundation Design - Raft Slab Stiffened Raft Foundation Raft Foundations or Waffle Slabs as they are sometimes called were developed in the 1980’s, as a response to more traditional strip footing foundation failures in expansive clays. Hope the SAFE software from CSI is one of the good softwares for analysis and design for raft foundation. (The method to be used depends on the relative rigidity of the raft with respect to the foundation soil. Raft foundations are a type of shallow foundation. It has many advantages as well as disadvantages. Report "Design applications of raft foundations". Therefore, I decided to design a deep foundation (Piles beneath the Raft). Given below is an…. Methods of Design of Raft Foundations. 1 (version 07/06/2009) Example 2. • The monolithic footing and foundation shown here acts as a floating raft for the building above. Overview SAFE is the ultimate tool for designing concrete floor and foundation systems. Load v/s settlement curve developed by Koizumi and Ito's (1967) actual test and by spreadsheets. Chapters are written by leading consultants and contractors from around the world who draw on their extensive experience in the UK and overseas. Previous question Next question Get more help. 5, Page 561, Reinf concrete A. Deb3 and S. They are: Conventional Method. In both the design approaches, the piled raft foundation becomes uneconomical as bearing capacity of raft and pile are not utilized in the single design approach. the design of raft foundations. com/download/887rvjurcz9. DESIGN LIMITS OF MACHINE FOUNDATION FOR EMPIRICAL METHODS The design of block foundation for centrifugal or reciprocating machine starts with preliminary sizing of the block, which has been found to result in acceptable configuration as (Arya et al. His practice has evolved into Engineering with the Spreadsheet, a valuable manual for engineers working with Excel. Consider the average uniform value of pressure act on each continuous slab. (The method to be used depends on the relative rigidity of the raft with respect to the foundation soil. 9D + E • Definition of seismic load effect E: E = ρ 1Q E1 + 0. txt) or read online for free. design code may be evaluated as described above with the exception that HL93 Live Loading - shall be used. Differential settlement 4. The raft can be designed with a universally distributed loading and linear loads at the edges and corners of the raft. xls), PDF File (. (sft), Area of the footing provided (sft). In the former, it is assumed that load of superstructure is transmitted to the underlying ground directly by the raft. Design of Raft Foundation. The design of the foundation to satisfy the local shear failure criteria. Piled Raft Foundations. The Pentominium Tower will be founded on a piled raft and it is required a 3D finite element model to fully understand the behavior of the foundation interaction with surrounding soil. Once spreadsheets were validated, different factors involved in the foundation design for combined piled raft foundations were evaluated, by employing the abilities provided by card files elaborated by MathCad. Design of Structures Foundations for Vibrating Machines. A concrete raft foundation is designed to ‘float’ on the ground beneath. Raft foundations alternatively known as mat foundations are formed by large and solid reinforced concrete slabs having identical thickness (normally 150 mm to 300 mm) that expands over an extensive area, often the whole footprint of a building (under the entire building). Mat foundations are used when the soil has a low bearing capacity and higher than normal settlements potential. Raft foundations or mat foundations are typically large foundations usually supporting several columns in two or more rows. design of an economic foundation was discussed. mat or raft foundation is a large concrete slab supporting several columns in two or Geotechnical Design of Deep Foundations -. Raft a software for analysis design of rigid raft foundation. 8 Structural design of foundations (6) §6. To make the smallest design setup for a functional receiver, requires the receiver to be placed on a two high floor. It is a highly specialized function and usually performed by a structural engineer. Raft foundations are used where the ground is inherently stable but where conditions deep below the surface, such as mining, might lead to ground movement. • It is used where the supporting soil has low bearing capacity. 2019 Agu 6 - Detail Construction Process Of Raft Foundation. 25 Some Highlight points of IS-2950 Part-1 (DESIGN AND CONSTRUCTION OF RAFT FOUNDATIONS ) For satisfactory design and construction of. A pile raft foundation is a geotechnical construction that combines the bearing effect of both the raft and the piles. This is an overly cautious approach, and there remains a need to find an optimal design method for a building’s foundations. Spreadsheets are hard […]. This foundation will be used for a loose sand soil. Because of the way in which they're constructed, floating foundations spread the weight of the structure over the entire base of the building rather than at scattered support spots. Excel sheet to Design of Raft Foundation Raft foundation is a reinforced concrete slab under the whole of a building or extension, 'floating' on the ground as a raft floats on water. The properties used in the analysis and the design of this raft foundation are shown in table 4. 8, STAAD FOUNDATION,RISA FOUNDATION, ANSYS, etc.