The timber formwork is to be used when limited reuse of. The contractor shall construct a reinforced concrete slab of 6. Dec 16, 2019 concrete construction februarymarch 2020 a futuristic pedestrian bridge, a needed community center, some luxury houses and lofts, and more buildings the case for a more cautious reopening, closed offices back in vogue, housing takes a hit, and more. There are 16 different types of slabs in construction. Guide for concrete floor and slab construction, aci 302. For slabongrade applications, a package representing the essentials to minimize cracking, increase joint spacing and enhance finished surface quality durability has been created. Sci p300 composite slabs and beams using steel decking best. Design and construction of joints for concrete streets. The following discussion describes the concrete structure design and important details of construction. Oneway and twoway slabs university of asia pacific. These options should be decided before the construction and could increase the initial cost of the project. In this article, ill give a detailed explanation of each slab where to use particular slab. If youre looking for a 2020 breakdown for cost of concrete slabs materials and what installation cost might be, youve come to the. A reinforced concrete slab is a crucial structural element and is used to provide.
In turn, the concrete slab and foundation transfer those forces directly to the ground as shown in figure 42. Concrete slab cost calculator 2020 with installation. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Some of them are outdated and many of them are frequently used everywhere. Dont let your remodeling budget go overboard by hidden surprises understand what the average installed costs for concrete slabs is in your zip code by using our handy calculator. Click download or read online button to get aci 302 1r 15 guide to concrete floor and slab construction book now. Best practices guidelines for concrete construction. Tips for pouring a concrete slab chief architect we could do it ourselves. This is a system that involves placing the foundation, erecting columns with special lifting collars, constructing slabs one on top of the other on the ground, lifting the slabs to their respective positions with hydraulic jacks located on top of the columns, and finally connecting the slabs to the columns by the collar device. Pdf download aci 302 1r 15 guide to concrete floor and slab. Concrete floor slabs employing portland cement, regardless of slump, will start to experience a. Concrete slabs and coatingsoftentimes, contractors need to fill and reinforce slab cracks because a coating will be applied to the surface such as that found on a pool deck, garage floors as well as commercial floors.
Over the last 20 years, there has been an increase in the use of concrete slab technology for transit, commuter, and highspeed train applications. Tayabji regional manager ctl group report 053201 project 05320. Because the construction of concrete floors on the ground necessarily focuses a great deal of attention on the performance of concrete, especially when the results of such construction are less than satisfactory, the concrete industry has the strongest incentives for doing everything. Foreword the quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. The design of slabs on ground should conform to the recommendations of aci 360r. Cip 6 joints in concrete slabs on grade what are joints. Liftslab construction concrete construction magazine. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
Transfer the building lines to the batterboards by dangling a plumb. Method statement for formwork, reinforcement and concrete. Chapter 4 describes the specifications for conc rete materials used in the mix. Jul 17, 2017 monolithic slabs are well suited for many kinds of buildings in warm climates. The construction and design of concrete slabs on grade d. Introduction concrete slabs on grade are a very common type of concrete construction.
Inadequate structural strength of concrete ensure the slab is properly designed to part 4 of the national building code. Aci 302 1r 15 guide to concrete floor and slab construction. Structural concrete structures reinforced concrete construction. Figure 42 slab ongrade and perimeter footing transfer loads into soil. The institution of structural engineers the institution of civil engineers march 2000 manual for the design of reinforced concrete building structures to ec2. Slab insulation methods, calculating heat loss, tubing options, system options and much more, all written in easy to understand language for the homeowner with pictures and diagrams. Flat slab haunched slab a longitudinal slab is one of the least complex types of bridge superstructures.
Formwork, including the use of pans, is quite expensive. Typically street pavement slabs range from 5 to 8 in. Concrete floor slabs employing portland cement, regardless of slump, will start to experience a reduction in volume as soon as they are placed. Correct placement is the last key and will require experienced contractors and proper inspection. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. They can be insulated, both underneath and on the edges. Best practices of concrete pavement transition design and.
The main reinforcing in a bridge slab supported by beams is both the top and the bottom transverse reinforcing steel. Two other acpa publications, design of concrete pavements for city streets and subgrades and subbases for concrete pave ments, address city street thickness design and subgrade subbase preparation. Concrete floor slabs may be in situ or prefabricated. Concrete is one of the most durable materials we can build with. Oneway and twoway slabs oneway slabs transfer the imposed loads in one direction only. This section states vapor barriers are waterproof membranes of 4 to 6 mil 0. For slabs spanning in both directions published tables and charts should be used to find bending moment and shear per unit width of slab. Pdf guide for concrete floor and slab construction.
Waffle slab construction process includes fixing forms, placement of pods on shuttering, installation of reinforcement between pods, installation of steel mesh on top of pods, and pouring of concrete. The concrete shall be made of nominal reinforcement with half of it embedded in existing concrete and tied to slab existing reinforcement. In this story, ill explain how we detailed the slab foundation for an offgrid project in the north carolina mountains. We had warm weather and we were almost an hours drive from the. But its also one of the most thermally conductive materials we have. Statement of work nec resurfacing the concrete slab around.
The main reinforcing in a single barrel reinforced concrete box culvert slab is the bottom transverse reinforcing steel. Manual for design and detailing of reinforced concrete to. Concrete slab residential permit guidelines per paul dickson, building official, all nonstructural concrete slab and sidewalk requests do not require a building permit. A 6mil polyethylene vapor retarder with joints lapped not less than 6 inches shall be placed between the base course or sub grade and the concrete floor slab cbc 1910. Concrete slab types construction, cost, and applications.
Guide for concrete floor and slab construction aci 302. However, no matter how basic or complex the floor is, the construction method is similar and includes. Refer to aci 223 for special procedures recommended for the design and construction of shrinkagecompensating concrete slabs on. Slabs on grade, aci concrete craftsman series ccs1. Flat slab analysis, design and detailing pdf civil. The advantages of composite construction over steel reinforced concrete construction are reducing the thickness of the floor slab with a simultaneous proving in the load bearing capacity of the slab. Only applies to concrete slabs that are structural and a future use for structural support. The formwork shall be designed to withstand construction loads such as fresh concrete pressure and weight. The construction and design of concrete slabs on grade. Posttensioned slab column connection whe report 68, serbia and montenegro poured on the ground in forms, one on top of the other, as shown in figure 11. Steelreinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below. Properties of the surface are determined by the mixture proportions and the quality of the concreting and jointing operations. Chapter 18 concrete slab structures january 2019 183 18. Constructing a highperformance concrete slab jlc online.
The contractor is usually responsible for controlling. Repairing common concrete slab problems the concrete network. It depends upon the many factors, but personally i will go for the ppc because of the following factors. These materials are originally located at different websites. Refer to aci 223 for special procedures recommended for the design and construction of shrinkagecompensating concrete slabs on ground. Frost heave never pour concrete on a frozen subgrade. Traditional construction joints are considered worldwide as the achilles heel of concrete slab placement roads, airports, industrial and commercial floors. Use concrete with sufficient compressive strength, at least 25 mpa, but preferably 30 mpa. They may be supported on two opposite sides only fig. Aci manual of concrete practice, 2006, part 3, guide to residential castinplace concrete construction, aci 332r84, chapter 9 concrete slab construction 9. Manual for the design of reinforced concrete building. Pdf productivity analysis of concrete slab construction by. Until a few years ago, the structure most widely used in the con struction of building slabs was the solid reinforced concrete slab. Steel reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below.
Tm 580912 concrete floor slabs on grade subjected to. Download aci 302 1r 15 guide to concrete floor and slab construction or read aci 302 1r 15 guide to concrete floor and slab construction online books in pdf, epub and mobi format. Online library guide for concrete floor and slab construction will teach you how to form a concrete slab. By concrete construction staff how is lift slab construction done.
The effectiveness of solid concrete slab construction works and selecting the formwork system was evaluated taking account of quality requirements, equipment ability, demand of time and labour i. In general, characteristics of the concrete slab surface and joint. Concrete floor slab construction process the constructor. Although claiming one of the lower jobsiteinjury rates, dangers exist with both the material aspects and construction practices of concrete construction and must be addressed to ensure a safe worksite. For more information on anchorage of braced walls to slab ongrade construction, see chapter 3 of this guide. Reinforcing steel for slabs is primarily parallel to slab. The pump shall be at least 10 cm high at center and dimeter 20 cm. Each shall extend around two meters in the south side. Concrete slab floors come in many forms and can be used to provide great thermal comfort and lifestyle advantages. This manual provides a wealth of general information about radiant heat. The design of suspended floors should conform to requirements of aci 318 and aci 421. This site is like a library, use search box in the. Refer to aci 223 for procedures for the design and construction of shrinkagecompensating concrete slabs onground.
Following correct construction practices to place the concrete. A civil engineer must know all the aspects regarding the flat floor system. The latest revision of the project specifications shall be used as references and is part of this method statement in the execution of work. Scribd is the worlds largest social reading and publishing site.
Concrete floor slab construction process includes erection of formwork, placement of reinforcement, pouring, compacting and finishing concrete and lastly removal of formwork and curing of concrete slab. Slabs can be onground, suspended, or a mix of both. Although coldformed steel framing for floor systems also is permitted by the irc, it is not covered here. The design procedure includes determini ng slab thickness based. Concrete floor slab construction process includes erection of formwork, placement of reinforcement, pouring, compacting and finishing.
Construction joints are used in slabsongrade to allow slab movement at transitional load bearing points from one concrete slab to the next. This site is like a library, use search box in the widget to get ebook. Reported by committee 302 american concrete institute. These interior or exterior slab coatings serve many purposes, either decorative or for safety. Installation guidelines of manufacturers of flooring. It has been the most common material used in slabs but several new. Concrete floor slabs on grade are subjected to a varie ty of loads and loading conditions. Concrete pavement design, construction, and performance. We planned to use the concrete slab as the finish floor, so it would be polished and sealed after it was cured and after the rest of the house was framed. This is a system that involves placing the foundation, erecting columns with special lifting collars, constructing slabs one on top of the other on the ground, lifting the slabs to their respective positions with hydraulic jacks located on top of the columns, and finally. This guide identifies the various classes of floors based on use, construction design details, necessary site preparation, concrete type, and other related materials. Precast concrete floor slabs are lifted from the ground up to the final height by lifting cranes. Best practices of concrete pavement transition design and construction by youn su jung graduate assistant research texas transportation institute dan g.
The advantages of composite construction over steel reinforced concrete construction are reducing the thickness of the floor slab with a. Cip 28 concrete slab moisture what is the problem concrete slab moisture can cause problems with the performance of floorcovering materials, such as vinyl tile, wood, resilient sheet flooring, carpet, and cause bondrelated failures of nonbreathable floor coatings. If you are new to radiant heat, our design and construction manual is a must read. Concrete slab rest ing on grade cont aining steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. The quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper g. The minimum concrete slab thickness supported directly on the earth shall not be less than 3. Pdf guide for concrete floor and slab construction mahmut. The floor construction is robust due to the continuity achieved between the decking, reinforcement, concrete and primary structure. Grid slabs are suitable for spans of 915m and live loads of 47knm 2. Zollinger program manager, rigid pavements texas transportation institute and shiraz d. Properties of the surface are determined by the mixture. Apr 18, 2017 it depends upon the many factors, but personally i will go for the ppc because of the following factors.
Flat slab system is an important division of concrete floor system. The quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. Like any construction sector, safety is of top importance in concrete construction. The basic requirements for the construction of a monolithic slab include proper site preparation and reinforcement of the concrete. Building construction, every floor generally has a beamslab arrangement and consists of fixed or continuous oneway slabs supported by main and. Asce, secb course content slab on grades construction. Design, manufacture and construction of buildings with. Requirements for monolithic slab construction hunker.