What is the difference between raft and mat foundation. Raft foundation design requirements and applicability. The raft foundation is a very commonly used type of foundation system. The numerical results are studied, and summarized in the form of design charts to show the. The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations. Pdf staad foundation manual v8i fredy barrera academia. This following writeup is the precursor of the videos related to global setup. Keywords the combined pile raft foundations, pile combinations, plaxis 3d analysis, preliminary analysis, staad. Types of foundations foundation systems shallow foundation deep foundation pile foundation pier caisson foundation isolated spread footings wall footings combined footings cantilever or strap footings raft or mat foundation. Pro v8i selectseries 2 getting started and tutorials.
Manual design of beam and raft foundation to eurocode 2 free. Free staad pro connect edition tutorial nigeria by lanre olokunola. Civilax based to server in civil engineering provides etabs and sap2000 tutorials. Staad pro is a renowned structural analysis and design software that is used all over the world, and this post is aimed at investigating the analysis of beam and raft foundation. Undoubtedly safe is the best software for raft foundation analysis and design in fact,best for any horizontal member design,punching and deflection check has been examined excellent in safe and even variable depth local thickening raft. Seismic resistant, residential building, shear wall, raft foundation, staad pro, safe. Civilax based to server in civil engineering provides etabs and sap2000 tutorials, civil engineering spreadsheets, civil engineering ebooks and many. Pro connect training analysis of raft foundation pages 10 language english format pdf size 2 mb download method direct download. And metric bar sizes, design optimization, and automatic drawing generation. Any shape of mat raft can be modeled in staad foundation advanced. Option for setting levels for different region elements of raft 3. Part ii of this manual contains tutorials on using staad. A raft or mat foundation is a sizable concrete slab or slabandbeam system which supports all the loads of superstructure through walls or columns in two or more rows and rests on soil layer or rock. This feature allows you to import any analyzed staad.
Raft foundations design and analysis with a practical approach sharat chandra cupta advisor, indian buildings. All, has anyone designed a mat foundation with staad pro and not pay the additional money for their foundation design module. Various methods to create mat raft model are explained in quick tour and staad foundation advanced graphical environment. Pro v8i support reactions and positions directly to design the structure foundations ram concept v8i. Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. Pro where the support reactions fromthe main model and associated load cases are automatically brought in. In this particular post we are going to consider the analysis and design of the same foundation. Raft foundations are built is this following steps. Bentley staad pro v8i download allows structural engineers to design any type of structure virtually. Pro consists of a set of manuals as described below. Raft foundations, punching shear capacity of reinforced concrete slabs, moderately. For situations in which a raft foundation is found to have an adequate factor of safety against failure but which is. User manual 3 mat foundation soil on top of a mat foundation can now be considered in analysis.
Mat foundations in staad pro civil engineering community. Slab design along any cut line to simulate manual mat. Oct 18, 2017 mat raft foundation design in staad pro. Staadpro software was used for the analysis of this model. Manual design of beam and raft foundation to eurocode 2. Mat foundations are sometimes preferred for soils that have low loadbearing capacities, but that will have to support high column or wall loads. Pro v8i is in an interface that is based on the latest programming technology, which means that 80 percent of new users learn to use staad. Recently a series of video tutorials were created to demonstrate different features of sfa. A program for analysis and design of pile groups, version 5.
This analysis and design software provided to be worth its. Pro model that has been successfully analyzed, because you will want to have the support reactions available for the foundation. Definition of raft foundation along with working principle, when to choose raft, types of raft foundation, materials of raft foundation, raft. A raft foundation is often used when the soil is weak, as it distributes the weight of the building over the entire area of the building, and not over smaller zones like individual footings or at individual points like pile foundations. Foundation assessment in different parts of iraq using staad pro v8i. Instructional materials complementing fema 451, design examples foundation design 1416 reduction of overturning moment nehrp recommended provisions allow base overturning moment to be reduced by 25% at the soilfoundation interface. Structural behavior of tall building raft foundations in. Ive been through the examples, but feel like i need a little more assistance research before i tackle the design. Raft foundation when to use, types, construction civil. Dec 30, 2016 how to give openings in rcc slab for staricase and shafts in staad pro duration. Analysis and design of an apartment building international journal. Staad pro retaining wall analysis and designcantilever type 2018 easy method duration.
Design of matraft foundation mat or raft foundation is a large concrete slab supporting several columns in two or more rows. Raft foundation design for a typical 2 storey house example bs8110. Staad pro tutorials design different slabs including staircase of multistorey building day 3. A use the staad pro mat design for mx and my only ignoring mxy twisting moment. Foundations are structural elements that transfer loads from. For static, pushover, dynamic, pdelta, buckling or cable analysis, staad. 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. Design of raft foundations methods and calculations.
Rcdc fe tutorial design of raft foundation and pile raft. Introduction the use of piled raft foundations as an alternative to conventional piled foundation. A practical design method has been developed for piledraft foundations as a part of. Design of beam, column, slab, shear wall, and raft foundation by. Request pdf design of pile configuration for optimum raft performance. Beam and slab raft foundation is analyzed and designed by using excel spread sheet manual and staad. Which software is better for raft analysis safe, staad pro. Using conventional manual methods, it takes long time and is difficult in. Gypsum, bearing capacity, iraqi soil, raft foundation, foundation design, base pressure. The extensive foundation which is usually called raft foundation, is a unified foundation that extends throughout the entire area of the columns. Free staad pro connect edition tutorial nigeria youtube. Used to begin a new project by importing the support coordinates and forcesmoments on the individual supports from bentleys staad. Staad foundation advanced will use the imported geometry and support reactions to design a mat foundation for the structure you can only import a staad. Any shape of hole or control region can be added to the mat raft boundary.
An investigation on the analysis of beam and raft slab. 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. The design was performed using the finite element software staad foundation, as shown in figure 11. Our project is aimed to complete with the help of staad pro gives more precise and accurate results than manual techniques. This is the biggest collection of civil and structural engineering design and calculation spreadsheets from civil and structural engineering professionals and experts, more than 4450 spreadsheets in total. Raft foundation design tutorial using orion pdf f40e7c8ce2 orion 18. Apr 20, 2018 this video features the design of raft mat foundations and pile raft. Pinned restrained in all three translational degrees of freedom and free in the 3 rotational degrees of freedom iii. Pro and the results of the analysis are directly imported in staad foundation advanced. This video will show the step by step method on how to analyze and design a mat foundation inverted flat slab on staad foundation advanced. Get efficient foundation design and documentation using plantspecific design tools, multiple design codes with u. Pro trainers manual page 2 model generation nodes and members approach. As a rule, raft foundation is used as a buildings foundation.
These reactions wereused as point loads for the design of the raft foundations. Pro package analyzed for earthquake forces with ductile detailing as per is. I for one has done the following for raft mat foundation design. Chapters are written by leading consultants and contractors from around the.
Raft foundations design and analysis with a practical approach sharat chandra cupta advisor, indian buildings congress, former chief engineer central public works department publishing for one world new age international p limited, publishers new delhi bangalore calcutta chennai guwahati hyderabad lukhnow mumbai pune. We will go through each one of those tutorials in details. Mat foundation raft foundation it is a combined footing that may cover the entire area under a structure supporting several columns and walls. It is used where the supporting soil has low bearing capacity. Pro v8i structural steelframe into autopipe v8i to correctly account for the pipe support stiffnesses and import the pipe engineers support reactions back into the model for an accurate design in a fraction of the time of traditional methods staad. Because staad foundation advanced provides a total solution for your foundation needs, a builtinproject management system enables line and. Design of pile configuration for optimum raft performance request.
Gts nx pile raft foundation analysis with superstructure and. These manuals are normally provided only in the electronic format, with perhaps someexceptions such as the getting started manual which may be supplied as a printed bookto first time and newversion buyers. It is one of the effective software which is used for the purpose of analysis and design of structure by the structural engineers. This aids in organizing your footing design groups. Seminar on building analysis on staad with raft foundations threedimensional structure is modeled for the analysis utilizing the staad pro software.
Pdf a new approach for estimating thickness of mat foundations. As with all our previous tutorials on foundations here, here and here, open the st. Modern codes of practice are increasingly recognising the computational power of structural analysis softwares. Detailed explanation for design and detailing settings available a. Ive been through the examples, but feel like i need a little. Sachpazis date 230420 chkd by date appd by date raft foundation design bs8110. Pro a leading product in structural analysis and design.
Design of multistoried residential building using staad. Pro file and update foundation input database if the staad. Drawings for any foundation type special purpose in analysis and design of building structures. For a moment frame, the column vertical loads are the resultants of base overturning. Posted in all, staad foundation, staad pro, tutorials. Modeling mat foundations rafts ram staad opentower wiki. That is why no further meshing or analysis are needed in staad foundation advanced.
Seminar on building analysis on staad with raft foundations. Pro, all these combinations are built for the analysis and the structural member is designed from the results of the critical combinations. Quality powerpoint presentations civil forum, engineers forum, civil doubts, civil engineering notes, civil engineering ppts, civil engineering seminars, structural engineering ppts, interview questons, multiple choice, objective, gate preparation, ies coaching. In column loads section the raft foundation will be discussed for verification. A few points to note here are, the analysis of the mat is carried out in staad. Staad foundation tutorialisolated footing design engineers. Pro model that has been successfully analyzed, because you will want to have the support reactions available for the foundation design.
The maximum differential settlement in foundation on. Jul 03, 2014 mat foundations in staad pro in staad foundation advance, the analysis and design of mats is based on the finite element theory. Tech student, dept of civil, chintalapudi engineering college,jntuk,ap,india. Staad pro foundation design in full detail pile foundations detail design and construction practice pile foundation in hindi, pile foundation construction, pile foundation nptel, pile foundation design, pile foundation construction. How to give openings in rcc slab for staricase and shafts in staad pro duration. Staad foundation advanced provides you with a streamlined workflow through its integration with staad. Raft or mat foundations understand building construction. May 05, 2017 undoubtedly safe is the best software for raft foundation analysis and design in fact,best for any horizontal member design,punching and deflection check has been examined excellent in safe and even variable depth local thickening raft for sam. 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. Floor slabs can be identified and linked to ram concept for full rc and pt design and detailing in a stateoftheart application.
Study on settlement characteristics of combined pile raft. Explain a simple plane frame model with all the necessary dimensions. Next, we model 1m cantilever slabs around the edges of the created slab. Design applications of raft foundations this book examines alternative design procedures for plain and piled raft foundations. Foundation design software staad foundation advanced. The tutorials guide a user through the processes of. L1 4 introstaadpro suranaree university of technology.
Staad foundation advanced can be usedin a standalone mode or can be used in conjunction with staad. Staad pro foundation design in full detail youtube. Apr 09, 2017 raft foundations sometimes known as mat foundations are a large concrete slab which can support a number of columns and walls. What value should i use for the area springs z force constant. Staad foundation advanced will use the imported geometry and support reactions to design a mat foundation for the structure. The substructure is the portion of the bridge structure such as pier and abutments above the foundation. The substructure is the portion of the bridge structure such as pier and abutments above the foundation unit and supporting the superstructure. How to analyze and design mat raft foundation with staad foundation. Analysis and design of the seismicresistant multistorey. See zero tension iteration options in the program manual for more information. Which software is better for raft analysis safe, staad. Staad foundation advanced analysis and design software addresses the building.
944 168 1283 887 1373 451 11 1537 226 112 1064 851 222 681 1542 44 1318 1444 251 1532 1273 395 1084 1189 1519 1120 242 1452 13 931 1343 948 626 918 1405 791