Contact dave kiekbusch for questions about this page. The principal features of a flat slab floor are a flat soffit, simple formwork and easy construction. As the name suggests, this type of building consists of a frame or skeleton of concrete. Analyze and design flat slab or waffle slab floors. Eliminating drops results in simpler falsework and formwork arrangements. The flexibility of flat slab construction can lead to high economy and yet allow the architect great freedom of form. Design of concrete beams, columns and pad foundations. The building will be built with a slab on the 1 st.
Construction of flat slabs international journal of innovative. Construction sequences analysis, time history analysis, flat slab, seismic parameters. Guide to the design and construction of reinforced concrete flat slabs contents membersof the projectsteeringgroup list of tables vii iv list of figures v 1. The basic requirements for the construction of a monolithic slab include proper site preparation and reinforcement of the concrete.
Steel design steel design software that easily designs or checks steel beams, columns and single span beam columns using the asd and lrfd standards. As no beam is used, floor height can be reduced and consequently the building height will be reduced. Tn342 design example 2way mondada 093090 adapt corporation. A procedure for carrying out the detailed design of flat slabs is shown in table 1 below. Jul 22, 2014 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Flat slab concrete floor system is similar to the flat plate system. How to design reinforced concrete flat slabs using finite element. Can you split or divide a slab into a segments for calculating pours. Flat slabs are used by engineers in many building due to its advantages over other reinforced concrete floor system in different cases. Over that time analysis methods have changed and new construction methods have been developed.
Slab segments in the first pour are identified with a 1, those in the second with a 2, etc. Flat slab system is an important division of concrete floor system. Column load calculation in flat slab concrete building column load calculation in flat slab concrete building. Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5 designing for shear in slabs including punching shear detailing solid slabs flat slab design includes flexure worked example exercise punching shear. Civildigital civil engineering articles concrete flat slab floors for construction efficiency advantages to client flat slab design on software flat slab design on software 0. The flat plate foundation should not be used in those structures where the loads of the column are extreme then the thickened flat plate is useful. Below is an explanation of the basic methods and skills required for successful tiltup construction. Flat slab construction reinforced concrete flat slab design. The slab is without drops and is supported internally and on the external long sides by square columns. A model is developed through an induced bim environment software. Twoway flat slab concrete floor with drop panels system.
The following is a technical guide for slabongrade home construction. A flat slab is a twoway reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Easily share your publications and get them in front of issuus. Design of flat slab with drop panel in etabs tutorial. Structures detailing manual examples as a supplement to the structures detailing manual sdm, a series of examples has been compiled here which represent some of the many situations a designer. Reinforced concrete slab and beam design software adaptrc. How to define auto construction sequence case in etabs duration. Flat slab construction definition is reinforcedconcrete floor construction not requiring beams and girders to transmit the floor load to supporting columns. Concrete buildings commercial construction concrete. The economical span l of a reinforced concrete flat slab is approximately d x 28 for simply supported, d x 32 for an end span and d x 36 for an interior span. Concrete frame construction concrete frame structures. Flat slabs for efficient concrete construction construct concrete.
We often encounter construction joints during site construction. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed. A flat slab is a twoway reinforced concrete slab system that doesnt have beams or girders and the loads are transferred directly to the supporting columns. Flat slab is defined as one sided or twosided support system with sheer load of the slab being concentrated on the supporting columns and a square slab called drop panels. The structural efficiency of the flat slab construction is most difficult. Post tension slab design software structural engineering. Jun 01, 2018 for site construction, it is sometimes confusing on what diameter and how many reinforcements we will go to provide along slab openings, but did you know that the structural design code particularly the aci code tells something about the openings in a slab. A sample construction schedule and custom home building. Column load calculation in flat slab concrete building. Structures design office structures detailing manual. Flat slab analysis, design and detailing pdf civil engineering. I am dealing with a large slab that will have mutiple poof concrete in order to complete it. Flat slabs may have drop panels at columns and columns may have capitals.
Construction joint in slabs we often encounter construction joints during site construction. Use of big table framework helps to reduce construction time. So if you want to get really detailed you need to investigate a lot of different load conditions, construction sequence, variations in material properties ec of concrete. Flat slab cad drawing dwg cadblocksfree cad blocks free. Concrete economical floor system is the flat plate, where a plain floor slab about 20 centimetres eight inches thick rests on columns spaced up to 6. Analysis, design and detailing of single and multistory flat slab construction in accordance with bs 8110.
Technical assignment 2 reston station phase 1 garage reston, va jonathan a fisher. The design and dimensions of any foundation slab will be determined by the size and design of the building that will sit. The building is being proposed to have a flat roof. Chapter 6 construction method for flat plate system 6. Fe analysis, is a popular powerful computer method of analysing flat slab concrete.
The economical span l of a reinforced concrete flat slab is approximately d x 28 for. Modern methods of construction mmc concrete centre. For spans over 9 m posttensioning should be considered. The design and dimensions of any foundation slab will be determined by the size and design of the building that will sit on top of it, as well as the soil conditions where the slab will be poured. Oct 09, 2017 nearly twothirds of the 44 buildings that fell in mexico city were designed with a construction method called flat slab now forbidden in parts of the united states, chile and new zealand. Wisconsin department of transportation bridge manual.
The flat slab is a twoway reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. Flat slab types of flat slab design and its advantages. Design of reinforced and unreinforced masonry walls and columns to is 325 and bs 5628. Flat slab construction can deeply reduce floorto floor height especially in the absence of false ceiling as flat slab construction does act as limiting factor on the placement of horizontal services and. Jul 18, 2014 the principal features of a flat slab floor are a flat soffit, simple formwork and easy construction.
Flat slab analysis and design free version download for pc. This method is used even today for the design of flat slabs and flat plates. Information on construction possibilities is provided below in the form of extracts from the various different subject areas. Flatslab construction definition is reinforcedconcrete floor construction not requiring beams and girders to transmit the floor load to supporting columns.
This type of construction is also referred to as an uppermost structural slab or transfer slab both can have a slab and. This design example uses the term podium slab which, while not included in the 2006 international building code ibc or 2007 california building code cbc, is commonly used in the building industry. Armacad is the standard used in most of construction engineering companies. Shorter construction time flat plate design will facilitate the use of big table. Because of this efficiency, this system can withstand an increased load capacity. Construction joint is one of the types of joints in site construction that can be located on walls and slabs. Construction stage analysis of flat slab structure with. The analysis and design follow the equivalent frame analysis method of the aci code, which considers a onebay wide strip of the floor system as a continuous frame. For many years, ciria report 110 has been the standard document for the design of reinforced concrete flat slabs. For spans from 5 to 9 m, thin flat slabs are the preferred solution for the construction of insitu concrete frame buildings where a square or nearsquare grid is used. Requirements for monolithic slab construction hunker.
A sample construction schedule and custom home building time. Undoubtedly, flat slab construction method is getting popular but there are still many. Flood resilience concrete industry sustainable construction strategy. The weight of the slab will be subtracted from the dead load where no slab exists during the slab pouring sequence. The analysis and design follow the equivalent frame analysis method of the. Guide to the design and construction of reinforced.
Link to download excel sheet to design reinforced flat slab. Click on the relevant pdf document for more information. Reinforced concrete slab and beam design software adaptrc 2017 product overview an easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. Design is defined as the decisionmaking process of planning, sizing, detailing, and developing specifications preceding construction of slabsonground. Nov 25, 2008 in areas with building height restrictions, saving 8 to 12 inches or more of height on each level can add up by the time you reach 10 or 12 levels. Scroll down this page to see an example of a typical construction schedule for a large custom home.
Technical assignment 2 penn state college of engineering. Outdated construction methods caused most building collapses. The analysis is based upon the finite element method in a theoretically consistent fashion that. The use of posttensioning commonly is applied to flat slab or flat plate construction in multilevel structures. Maybe you might wonder what the purpose of construction joints is and what it is all about. Feb 15, 2019 construction of rcc design from start to end in step by step manner. Voided flat plate voided slab the concept of the voided slab is simple in that concrete mass is removed from the areas in the slab where it is not needed to resist load and as a result of the reduced dead load, voided slabs can span further.
Analysis and design of flat slabs using various codes. Flat slab construction can deeply reduce floorto floor height especially in the absence of false ceiling as flat slab construction does act as limiting factor on the placement of horizontal services and partitions. It was produced using microsoft project scheduling software and includes most, but not all, of the activities involved in the process of building a new house in maryland. Aug 27, 2015 guide to the design and construction of reinforced concrete flat slabs contents membersof the projectsteeringgroup list of tables vii iv list of figures v 1. Flat slab solution is less complicated in teams of structural analysis, design and. Then, analysis will be carried out on a typical flat slab panel base on each. The benefits associated with flat slab construction may well outweigh those of other. But the methodology is there if you want to go to those extremes. This assumes that the slab thickness has previously been determined during conceptual design. Flatslab construction definition of flatslab construction. Analysis of flat sanalysis of flat sllabab moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000 5000 a floor slab in a building where stability is provided by shear walls in one direction ns. Chapter 6 construction method for flat plate system. Flat slab types of flat slab design and its advantages flat slab is a reinforced concrete slab supported directly by concrete columns without the use of beams.
This can prove gainful in case of lower building height, decreased cladding expense and prefabricated services. Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5 designing for shear in slabs including punching shear detailing solid slabs flat slab design includes flexure worked example. Approximately 10% of the vertical member could be saved. Floor and wall units are produced offsite in a factory and erected onsite to form. The program can analyze and design slabs or mats of arbitrary shapes and varying thickness, drop panel.
Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Guide to the design and construction of reinforced concrete flat slab. Safes ageadjusted modulus of elasticity method for flat plate slab analysis was found to be more accurate than. These materials are originally located at different websites. A civil engineer must know all the aspects regarding the flat floor system. Flat slab floors for construction efficiency advantages to client. Advantages and disadvantages of flat slabs civil engineering. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Post and beam framing 42 roof slopes 44 flat roofs 45 pitched roofs 45 valleys 48 dormers 48 overhangs 48. Design and construction guidance related to slimdek construction is dealt with in a separate part of the guide because of the significant number of differences from traditional composite beam and slab. Wall form panel placed on the floor slab after removal waiting for erection in appropriate sequence step 2 removing of the wall form panel and lift to the upper floor for erection. The most crucial benefits of flat slabs are given below. Look at the construction process in its entirety, including the contractual arrangements.
Matlab is a software package for highperformance numerical. The concrete industry embraces innovation and modern methods of construction mmc by offering concrete solutions which can be used to reduce construction time and promote sustainable development, as well as offering cost savings. Can you split or divide a slab into a segments for. Flat slab is a reinforced concrete slab supported directly by concrete columns. In this fast growing infrastructure industry, efficiency in construction is utmost important. For additional stability, you can also use steel joists that are built into one or both of. The basic construction of a flat roof starts with roofing timber that is laid across two upright items, usually two walls.