In this code it has been assumed that the design of plain and reinforced cement concrete work is entrusted to a. For normalweight concrete weighing approximately 145 lbft3, the aci code states that. A concrete slab reinforced with rebar or welded wire fabric should have a minimum 1 12 inches of clear cover. The building code requirements for structural concrete code covers the materials, design, and construction of structural concrete used in buildings and where applicable in nonbuilding structures. In this example, a concrete warehouse floor with joints spacing 20 o. Direct design method ddm for slab systems with or without beams loaded only by gravity loads. It is likely to be the most costly item in terms of maintenance through the life of the building. Collection includes, concrete technology books, concrete mix design books, concrete admixtures handbooks, concrete repair manuals, concrete recycling. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Design methods are given for structural plain concrete, reinforced concrete, shrinkagecompensating concrete, and posttensioned concrete slabs. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development.
Concrete slab resting on grade containing steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. This report covers the design of slabs on grade for loads caused by material stored directly on the slab or on. Concrete society technical report 34 design spreadsheet. Plain concrete is durable in the marine environment. Collection includes, concrete technology books, concrete mix design books, concrete admixtures handbooks, concrete repair manuals, concrete recycling guides.
As an alternate to the strength design method, members may be proportioned so that stresses in the steel and concrete resulting from normal service loads are. Flat slab analysis and design free version download for pc. Under normal conditions, rigid pavement for residential driveways will be either 6inch plain concrete or 5inch reinforced concrete with 0. Reinforced concrete rc is a composite material in which concrete s relatively low tensile strength and. Ventilated concrete slabs are also discussed by ren et al. Code requirements for residential concrete and commentary an aci standard reported by aci committee 332 aci 33208 the code portion of this document covers the design and construction of. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
Design, thermal performance and modeling of a ventilated concrete. Proper transverse joint design for both plain and reinforced pavements will specify the joint interval that will control cracks and provide adequate load transfer across joints. Design of isolated square and rectangular footings aci 31814 notation. B5252, structural use of concrete, upon which the following bodies were represented. Download structural design guide to aci code fourth edition.
By definition, secondarytemperatureshrinkage reinforcement is used to control. Din 1045 july 1988 structural use of concrete, design and construction, deutsches institut fur normung e. The civilweb concrete society technical report 34 concrete pavement design spreadsheet includes modules for designing concrete pavement slabs subjected to single point, single patch, double point. For the diy concrete slab designer, there are extensive graphics and resources available to build a perfect slab for the kit home builder.
The report addresses the planning, design, and detailing of the slabs. The most common uses for plain concrete in marine structures are breakwater armour units, breakwater caps, and blocks in blockwork quay walls. Under normal conditions, rigid pavement for residential driveways will be either 6inch plain concrete or 5inch reinforced concrete. Pdf reinforced concrete design or reinforced cement.
Plain concrete slabongrade design structural engineering. The steel is initially protected against corrosion by the alkalinity of the concrete. Plain unreinforced concrete slabs on grade example model. Plain and reinforced concrete specification may 2017 process industry practices page 5 of 16 concrete structures in concrete documents, any placement of concrete designated in contract documents as. Reinforced concrete design examples geotec software. Aci318 code provides two design procedures for slab systems. Manual for design and detailing of reinforced concrete to the code. The mixture of cement, fine aggregate sand and coarse aggregate are generally called plain cement concrete pcc or plain concrete. It may be that here is a time when the owner builder has to get help, because laying slabs is an arduous, time consuming process best suited to subcontractors. The irc have brought out these revised guidelines for the design of plain jointed cement concrete pavements, with and without tied concrete shoulders, for an average daily commercial traffic volume of more than 450 vehicles with laden. A fullscale jointed plain concrete pavement jpcp with two different dowel bar arrangements, namely, standard and special method, was constructed and evaluated under actual. Tm 580912 concrete floor slabs on grade subjected to.
In the design of rigid pavements, it is important to determine the thickness of slab in case of rigid slab taking most of the load carrying capacity. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. Plain concrete slab ongrade design apetr26542 structural 12 nov 04 14. Tr34 2003 recommends that the characteristic flexural strength of plain concrete should be taken as fctk. The design procedure includes determining slab thickness based. Design and check of concrete crosssections is performed according to en 199211 or en 19922 eurocode 2. Sep 20, 2019 it all depends on the size of the slab and whether the slab is on grade. A concrete slab reinforced with rebar or welded wire fabric should have a minimum 1 12 inches of clear cover between the reinforcing and the top of the slab. Packard portland cement association, 1976 concrete floor slabs on grade subjected to heavy loads army technical manual tm 580912, air force manual afm 883, chapter 15 1987. The reorganized aci 31814 code iowa state university.
Concrete floor slabs on grade are subjected to a varie ty of loads and loading conditions. Concrete slab rest ing on grade cont aining steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. Design and construction of joints for concrete streets. Indian standard plain and reinforced concrete code of. Design a plain concrete footing for a column of 400 mm x 400 mm carrying an axial. Design of reinforced concrete, 9th edition wec civilians. The concrete pavement is generally the most important aspect of an industrial project to a client but often has the least amount of design and is the least understood by design engineers. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Download stuctural concrete books civil engineering community. The 6 slabs on grade is unreinforced and supported on soil with a subgrade. Joint spacing in plain jointed concrete pavements, the joint is designed to provide a plane of weakness that will control the formation of transverse cracks. Design floors and foundations reliably and efficiently, saving time and money, and overcoming the most common concerns you face as a designer. Posttensioned, reinforced concrete slab design software ram. Evaluation of the approach used for modeling the base under jointed plain concrete pavements in the aashto pavement me design guide.
Manual for design of slabs, pile caps and footings. Download structural design guide to aci code fourth. Pdf jointed plain concrete pavement model evaluation. Design of a group of footings with and without tie beams this example shows. The design procedure includes determini ng slab thickness based. Plain and reinforced concrete specification may 2017 process industry practices page 5 of 16 concrete structures in concrete documents, any placement of concrete designated in contract documents as mass concrete shall also be in accordance with section 8 of aci 350. Safe is the ultimate tool for structural engineers designing concrete floor slabs, and. How to design plain jointed rigid pavements for highways. Reinforced concrete design 1 design of slab examples.
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. The reinforcement is usually done using steel reinforcing bars. Absence of beam gives a plain ceiling, thus giving better architectural appearance than in usual cases where beams are used. The code also covers the strength evaluation of existing concrete structures. A reinforced slab is a broad, flat plate, usually horizontal, with top and bottom surfaces parallel or nearly so. Plain concrete is durable in the marine environment, provided it is dense and well compacted, but precautions are still required in design and construction to achieve the desired durability. Student prices31814 building code requirements for. Effect of dowel bar arrangements on performance of jointed. Background information on the design theories is followed by discussion of the soil support system, loadings, and types of slabs. Download technical article 15min read the concrete pavement is generally the most important aspect of an industrial project to a client but often has the least amount of design and is the least understood by design engineers. Suspended slabs can include flat, twoway, waffle, and ribbed framing systems. It was found that the pavement me overestimated the stress in jpcp for unbonded stabilized bases and granular bases and underestimated the stress for bonded stabilized bases when compared to other. In plain concrete pavement design, slab lengths will not exceed 15 feet with 12 feet recommended. Examples of regions with discontinuity in geometry or action.
Here the thickness of the slab and the compression and flexural strength properties of the concrete based on 28day tests are the controlling parameters. Economically design posttensioned and reinforced concrete floors including slabs, mats, and rafts, with exceptional visibility into compliance, efficiency, and practicality. Tm 580912 concrete floor slabs on grade subjected to heavy. Download stuctural concrete books civil engineering. It may be that here is a time when the owner builder has to get help, because laying slabs. Nov 17, 2009 a plain structural concrete slab onground uses the properties of the concrete to support the design loads. Plain and reinforced concrete code of practice ced 2. Code requirements for residential concrete and commentary an aci standard reported by aci committee 332 aci 33208 the code portion of this document covers the design and construction of castinplace concrete one and twofamily dwellings and multiple singlefamily dwellings townhouses, and their accessory structures. The civilweb concrete society technical report 34 concrete pavement design spreadsheet includes modules for designing concrete pavement slabs subjected to single point, single patch, double point, double patch or quadruple point or patch loads. Design of a group of footings with and without tie beams this example shows the analysis and design of a group of footings resting on an elastic foundation by two different structural systems.
Design of slabsonground aci 360r06 by american concrete institute slab thickness design for industrial concrete floors on grade is195. Evaluation of the approach used for modeling the base under. It all depends on the size of the slab and whether the slab is on grade. Grdslab concrete slab on grade analysis spreadsheet. These books are used by students of top universities, institutes and colleges. Design, thermal performance and modeling of a ventilated. Design a cantilever projecting out from a room slab extending 1.
Concrete plain the program has been developed for verification of plain concrete members under action of normal force, shear forces and bending moments. The reinforcement or prestressing steel may be provided for the effects of shrinkage and temperature or for structural loading. The slab may be plain, reinforced, or prestressed concrete. Design of isolated square and rectangular footings aci 31814. Athientis 1994, 1997 conducted experiments and simulations to study the thermal behavior of both passively and actively charged concrete slab in passive solar buildings. Indian standard plain and reinforced concrete code of practice. Diy concrete slab design for the diy concrete slab designer, there are extensive graphics and resources available to build a perfect slab for the kit home builder. 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.
These can be designed for either plain concrete pavements or slabs containing fabric reinforcement. This study evaluates the modeling of different base types under new jointed plain concrete pavements jpcp in the aashto pavement me design guide. Reinforced concrete rc, a kind of composite material, in which steel is inserted in such a manner that the whole material offers higher tensile strength or ductility. Evaluation of the approach used for modeling the base. Design of isolated square and rectangular footings aci. Indian standard plain and reinforced concrete code.
Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. Plainconcrete slabs article pdf available in magazine of concrete research 596. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steelreinforced slabs, typically between 100 and 500 mm thick, are. Difference between structural concrete slab and plain. Crack control of plain concrete industrial pavements intrax. Plain concrete slabongrade design apetr26542 structural 12 nov 04 14.