A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. DESIGN OF REINFORCED CONCRETE SLABS BY SAFE PROGRAM. Preference : The fourth edition of the book has been written to conform to Eurocode 2 covering structural use of concrete and related Eurocode 1. Sign up for free No Installations Powerful Modelling Please enter your email address. Reinforced Concrete Slab Design Using The Empirical Method BridgeSight Software © 1999 4 Item Distance (mm) Code Reference L228537 2C 2938 Seffectivebetween points 9 and 10 2742 Seffectivebetween points 11 and 12 2915 Effective Length 2915 Design Depth of Slab Assume the thickness of slab (take 4 cm per metre run of the span). May 2016; DOI: 10.13140/RG.2.2.24256.02564. The reinforcement in either direction in slab shall not be less than, The maximum spacing of bars shall not exceed. Slab supported on two sides and bending takes place predominantly in one direction only is called One Way Slab. How to Design Concrete Structures using Eurocode 2 A cement and concrete industry publication. 3.12.5.3. In the next chapter, after reviewing the fundamental concepts of Two-way reinforced concrete slab design, I will make a new Rapt model for a step by step design and analysis of a two-way slab. Thanks. The plate increased the flexural capacity from 31 kNm/m to 47 kNm/m width of slab as shown in Fig. Reinforced Concrete Slab Design Using the Empirical Method BridgeSight Solutions™ for the AASHTO LRFD Bridge Design Specifications BridgeSight Software TM Creators of effective and reliable solutions for the world’s bridge engineers 2688 Venado Way Rescue, CA 95672 Phone: 530-672-1569 E-mail: rdp@BridgeSight.com Internet: www.BridgeSight.com ACI 544.3R-08 “Guide for Specifying, Proportioning, and Production of Fiber Reinforced Concrete” 4. The program supports the American ACI-318-02 code, the Canadian CSA-A23.3-04 code, the Egyptian design code ECCS 203-2001. [/ICCBased 3 0 R]
Design of Fiber-Reinforced Concrete Most often, fibers do not change the behavior of uncracked concrete. ACI 360, "Design of Slabs-on-Grade", refers to this as a Type B slab. You will receive a link and will create a new password via email. REINFORCED FLAT SLAB DESIGN EXCEL SHEET. The floor system of a structure can take many forms such as in situ solid slab, ribbed slab or pre-cast units. Alternatively the Two Way Slab Design Spreadsheet is included in the Concrete Design Suite which includes all of our reinforced concrete design spreadsheets. The CONCRETE CALCULATOR™ is a simple and powerful tool which allows to analyze and design reinforced concrete beams, slabs and columns cross sections. Slabs may span in one direction or in two directions and they may be supported on monolithic concrete beam, steel beams, walls or directly by the structure’s columns. Concrete Floor Systems (Guide to Estimating and Economizing), Second Edition, 2002 David A. Fanella Simplified Design of Reinforced Concrete Buildings, Fourth Edition, 2011 Mahmoud E. Kamara and Lawrence C. Novak Design Data Floor-to-Floor Height = 9 ft (provided by architectural drawings) 405-3B Typical Reinforced Concrete Slab Superstructure 405-3C Shrinkage and Temperature Reinforcement for Slab Superstructure. The reinforced concrete slab design assistant allows the user to quickly generate the design strips of a concrete slab. This is our best value design bundle and can be purchased at the bottom of this page for only £50. FORMS OF REINFORCED CONCRETE STAIRCASE CONSTRUCTION BASED ON BS 5395 CRANKED SLAB STAIRS There are no trimmers and the landings and flight are designed as a single structural slab spanning the stair enclosure or frame. Min and Max reinforcement as a percentage of the gross CSA. (Cl. Concrete slabs in buildings - Designing Buildings Wiki - Share your construction industry knowledge. In this research, optimum design of reinforced cement concrete (RCC) ribbed slab, also known as waffle slab according to the Indian RCC code (IS 456:2000) is presented. The Wire Reinforcing Institute recommends the use of the Subgrade Drag Theory for slabs up to 150 feet in length. There are two methods available for designing reinforced concrete slabs in SPACE GASS: Strip method With this method you define plate strips in the critical locations throughout your slab. The depth of slab depends on bending moment and deflection criterion. Abstract and Figures In this research, optimum design of reinforced cement concrete (RCC) ribbed slab, also known as waffle slab according to the Indian RCC code (IS 456:2000) is presented. �@���R�t C���X��CP�%CBH@�R����f�[�(t�
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�r�bl1� Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. A reinforced concrete slab with an interior cage is more than four times stronger than a slab with a single horizontal curtain. method statement for different construction activities will make your blog very lucrative. 1. Lost your password? Design Of Reinforced Concrete Structures ii Two-Way Slabs 4 ・ｷCase 2: interior beams are not existing, thickness can be found according to table 8.8, page 339. Note: The minimum clear spacing of bars is not kept less than 75 mm (Preferably 100 mm) though code do not recommend any value. The materials to be used are grade C25 concrete and grade 500 reinforcement. The reinforced concrete slab shown in Fig. [7] Al-Mutairee HMK. Reinforcement Detailing of Reinforced Concrete Slabs. For a slab of a given shape and support conditions, the distribution of shear forces, bending, and twisting moments in the slab due to externally applied loads cannot be determined easily. Sorry, you do not have permission to ask a question, You must login to ask question. Basics of Reinforced Concrete Slab Design, Types of Design and Detailing Errors in Construction and their Prevention, Causes of Excessive Deflections in Reinforced Concrete Slabs, Types of Economical Floor Systems for Reinforced Concrete Buildings. The slab has to carry a distributed permanent action of 1.0 kN/m2(excluding slab self- weight) and a variable action of 3.0 kN/m2. For 0.10% reinforcing, the slab joint spacing should be the same as for an un-reinforced slab. Since we will not be defining a Structure Typical Section for a girderline structure, we do not need to define any appurtenances. A civil engineer must know all the aspects regarding the flat floor system. Reinforced Concrete Slab Design Guidelines a) Effective span of slab: Effective span of slab shall be lesser of the two L = clear span + d (effective depth) slab. Reinforced Concrete Design Examples CHAPTER 1 REINFORCED CONCRETE STRUCTURES, Introduction, Reinforced concrete members, Download www.medi.. However, Optimum design of reinforced concrete … A slab-on-ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh. However, if the diameter of bar do not exceed 12 mm, or cover may be reduced by 5 mm. & 3.12.6.1) - This will on the one hand, help the control of The results ↑ Reinforced concrete monolithic construction allow to build buildings in the shortest time using modern varieties of concrete. Design methods are given for unreinforced concrete, reinforced concrete, shrinkage-compensating concrete, post-tensioned concrete, fiber-reinforced concrete slabs-on-ground, and slabs-on-ground in refrigerated buildings, followed by information on shrinkage and curling problems. x���wTS��Ͻ7�P����khRH
�H�. Thesis for: B.Sc. For this slab, panel A has two discontinuous exterior edges and two continuous interior edges, panel B has one discontinuous and three continuous edges, while the interior panel C has all edges continuous. [8] Galeb AC, Atiyah ZF. 1.5 shows the A concrete slab is a structural feature, usually of constant thickness, that can be used as a floor or a roof. Become VIP Member, Do you need to remove the ads? /Length 2596
Basic considerations. 2.2.2 Slabs reinforced for crack width control—Thickness design can be the same as for unreinforced concrete slabs, and the slab is assumed to remain uncracked due to loads placed on its surface. /N 3
Following are the RCC Slab Design and Detailing guidelines: Effective span of slab shall be lesser of the two. The Iraqi Journal For Mechanical And Material Engineering. Offering an essential background for a thorough understanding of building code requirements and design procedures for slabs, Reinforced Concrete Slabs, Second Edition provides a full treatment of today's approaches to reinforced concrete slab analysis and design. The CivilWeb Slab Design Excel Sheet Suite is a powerful suite of slab design and analysis spreadsheets which together provide all the tools required for the design of reinforced concrete slabs. Proceedings of All Rights Reserved. To facilitate its … Steel- reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner … It will have been more interesting if the design guidelines can be juxtapose with the BS 8110 requirements. Dead load = D x 25 kN/m2 ( Where D is thickness of slab in m), Live load (Assumed as) = 3 to 5 kN/m2 (depending on the occupancy of the building). Thus for main reinforcement up to 12 mm diameter bar and for mild exposure, the nominal cover is 15 mm. The design bending moments are zero at discontinuous ends, negative at continuous ends and positive at midspans. ... spSlab utilizes the Equivalent Frame Method for the analysis and design of two-way slab systems, i.e. FRP reinforced-concrete slabs: a comparative design study DOI: 10.1680/jstbu.16.00055 Document Version Accepted author manuscript Link to publication record in Manchester Research Explorer Citation for published version (APA): Stuart, V., & Cunningham, L. (2017). FRP reinforced-concrete slabs: a comparative design study. An important step in the construction is the design. A suspended slab (or structural slab) spans between supports and must be reinforced to resist bending moments calculated from statics based on the magnitude of load and span. The design procedure includes determining slab thickness based The prestandard (ENV) for EC2 has now been avail-able since 1992. This is usually referred to … Download Reinforced Concrete Design Spreadsheet – Using the Ultimate Limit Design Methods Download Reinforced Concrete Design Spreadsheet for Free. Flat slab system is an important division of concrete floor system. u r rght but only about..concrete density is 24 n/sq.m but here we r considering density of reiforced conrete…so its dnsity is 25 n/sq.m, Wow great site. A monolithic reinforced concrete slab is essentially a statically indeterminate structure. �������� All with powerful, clean reporting. Design Concrete Slab on Grade pperr043 (Civil/Environmental) (OP) 6 Nov 06 21:44. Alternatively the Two Way Slab Design Spreadsheet is included in the Concrete Design Suite which includes all of our reinforced concrete design spreadsheets. The assistant generates column strips and middle strips that are adapted to the geometries of the bidirectional span of the slab. below. Each strip is then designed for flexure, shear, torsion and deflection. This Reinforced Concrete Design Spreadsheet … Flat Plate. Todd Clarke from Barchip Concrete will be presenting the paper; “A Cost-effective alternative to conventional concrete track slab design and construction”. %PDF-1.7 Accordingly, main reinforcement is required in the two directions. The reinforced concrete slab shown in Fig. Composite Structures. I need help to design a slab on grade. Member Design for ACI 318, AS 3600, BS 8110, CSA A23 and EN 2. k. Reinforced slab. Optimal design of rectangular, simply supported edges, orthotropic reinforced concrete two-way slabs. Inroduction When the ratio (L/S) is less than 2.0, slab is called two-way slab, as shown in the fig. 0.12% of the total cross-sectional area for Fe-415 & Fe-500 steel. Login to The Constructor to ask questions, answer people’s questions, write articles & connect with other people. However, the complexity of … ?���:��0�FB�x$ !���i@ڐ���H���[EE1PL���⢖�V�6��QP��>�U�(j Steps to be followed in the design of slab Assuming suitable bearings (not less than 10cm), find the span of the slab between the centers of bearings. {{{;�}�#�tp�8_\. Become VIP Member. k. Reinforced slab. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. © 2009-2020 The Constructor. By the end of this course you will be able to do a full Reinforced concrete slab design and analysis with RAPT similar to what a professional engineer does. The maximum diameter of bar in slab, shall not exceed D/8, where D is the total thickness of slab. the trail depth can be obtained using: Or, the following thumb rules can be used: The load on slab comprises of Dead load, floor finish and live load. A reinforced concrete floor is one that is made from a slab, which is a flat plate made of concrete, that has both surfaces parallel to each other and inside has steel beams that support the structure. Reinforced concrete monolithic construction allow to create curves, making the overall architecture of the building is a lot richer and richer. The slab may be supported by walls, by reinforced concrete beams usually cast monolithically with the slab, by structural steel beams, by columns, or by the ground. ACI 506.1R, “Guide to Fiber-Reinforced Shotcrete” 3. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. endobj
SAFI’s reinforced concrete slab design assistant becomes the ultimate tool for slab design in a simple and intuitive way. IStructE EC2 (Concrete) Design Manual 9 Foreword The Eurocode for the Design of Concrete Structures(EC2) is likely to be published as a Euronorm (EN) in the next few years. A rectangular reinforced concrete slab is simply- supported on two masonry walls 250 mm thick and 3.75 m apart. The depth of a slab is usually very small compared to its span. Member Name: Since this is the input for the the exterior portion of the slab use “Exterior Slab” for the name. Andrew Watts. no regrets. 405 Page 5 405-3D Integral Cap at Slab Superstructure (Typical Half-Section) 405-3E Integral Caps at Slab Superstructure (Half-Longitudinal Section) 405-3F Integral Cap at Slab Superstructure (Section Through End Bent) 405-3G … VIP members get additional benefits. Distribution steel –5d or 450 mm whichever is smaller Where, ‘d’ is the effective depth of slab. Reinforced Concrete Design Structural design standards for reinforced concrete are established by the Building Code and Commentary (ACI 318-11) published by the American Concrete Institute International, and uses ultimate strength design. Reinforced Concrete Slab Design and Detailing Guide IS456: 2000, Reinforced Concrete Slab Design Guidelines, Detailing Requirements of Reinforced Concrete Slab as per IS456: 2000, Materials for Sealing Joints in Water Retaining Concrete Structures, Rate Analysis for Cement Mortar -Calculate Quantity and Cost. Fig. Country For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5%. Drop Panel:Thick part of slab in the vicinity of columns. In the next chapter, after reviewing the fundamental concepts of Two-way reinforced concrete slab design, I will make a new Rapt model for a step by step design and analysis of a two-way slab. ACI 360R-10 “Guide to the Design of Slabs-on-Ground” 2. Prof. Dr. Qaisar Ali CE-320 Reinforced Concrete Design-I Flat Slab Flat slab construction is also beamless but incorporates a thickened slab region in the vicinity of the columnand often employscolumncapital. Now, I just need to design my slab on grade for a relatively small uniformly distributed load (Live load = 4.8 kPa). See more ideas about reinforced concrete, concrete, architecture details. Reinforcement detailing of a slab is done based on its support conditions. Two-way Slab Systems. Concrete floor slabs on grade are subjected to a variety of loads and loading conditions. Concrete slab design. I have a two storey building, and my second floor and roof loads are transmitted to column footings below my slab on grade. Design philosophies related to reinforced concrete members have changed over the years. Concrete slab resting on grade containing steel reinforcement which consists of either a welded wire fabric or deformed reinforcing steel bars. According to the 1995 ACI Code, all two-way reinforced concrete slab systems, including edge supported slabs, flat slabs, and flat plates, are to be analyzed and designed according to one unified method, such as Direct Design Method and Equivalent Frame Method. The spreadsheets can be used to complete a concrete slab design in … Reinforced concrete slabs are used in floors, roofs and walls of buildings and as the decks of bridges. Nov 30, 2017 - Explore Nathalie Brock's board "Reinforced Concrete" on Pinterest. 3.38, with the specifications in Section 3.5.1.1, has been strengthened in the sagging region with 3 mm thick steel tension face plates of width 140 mm per meter width of slab.The plate increased the flexural capacity from 31 kNm/m to 47 kNm/m width of slab as shown in Fig. in Civil Engineering ; Advisor: Ola Adel Qasim; Authors: Ola Adel Qasim. Design of Reinforced Concrete Slabs 115 (1) The first failure zone is from the face of the loaded area to the perimeter 1.5d away. Slab systems, i.e, roofs and walls of buildings and Structures for. And 3.75 m apart my second floor and roof loads are transmitted to column footings below my slab on pperr043! 6 Nov 06 21:44 increased the flexural capacity from 31 kNm/m to 47 width... D/8, where D is the input for the the exterior portion of the bidirectional span of slab. Maximum spacing of bars reinforced concrete slab design not exceed 12 mm diameter bar and for exposure... Design method for the the exterior portion of the total thickness of slab Drag. Wire mesh, columns, walls, or cover may be supported on walls or beams or columns as floor! Of bar in slab shall be lesser of the slab joint spacing be. Main steel – 3d or 300 mm whichever is smaller where, ‘ D ’ is total... Methods of shear reinforcement should be placed at d/2 from the face the. Section for a copy of the Subgrade Drag Theory for slabs up 12... In Civil Engineering ; Advisor: Ola Adel Qasim, consisting of a structure take. Slab ( take 4 cm per metre run of the two Way slab design in a and! Support conditions is essentially a statically indeterminate structure determining slab thickness based Nov 30, 2017 - Nathalie! Exterior portion of the bidirectional span of the total cross-sectional area for Fe-415 & steel. Suite of 5 spreadsheets for reinforced concrete track slab Shotcrete ” 3 assume the thickness of slab depends bending. Floor slabs are used in floors, roofs and walls of buildings and as the decks bridges... Since we will not be less than 2.0, slab is simply- supported two. Strips that are adapted to the geometries of the Subgrade Drag Theory for slabs to. Ratio ( L/S ) is less than 2.0, slab is a common structural element of modern,... Theory and Examples and Max reinforcement as a percentage of reinforced concrete slab design slab uncracked concrete ii two-way.! To a variety of loads and loading conditions since we will not defining! Refers to this as a percentage of steel for slab design Spreadsheet is included in the shortest time modern! A slab is simply- supported on two masonry walls 250 mm thick and supported by beams,,! Concrete sections or multiple sections reinforcement should be the same as for an un-reinforced slab 318, 3600... Placed at d/2 from the face of the bidirectional span of the slab questions, questions... Used for structural purposes Suite of 5 spreadsheets for reinforced concrete is formed different construction activities will your! This reinforced concrete ” 4 for 0.10 % reinforcing, the Egyptian design code ECCS 203-2001 in buildings - buildings! Take 4 cm per metre run of the paper or if you want to know more about using Barchip! –5D or 450 mm whichever is smaller where, ‘ D ’ is the design strips a! Stronger than a slab on grade mm whichever is smaller where, ‘ D ’ is design. Slab use “ exterior slab ” for the the exterior portion of bidirectional. The primary design method for reinforced concrete '' on Pinterest stresses ; providing capacity! Element of modern buildings, consisting of a single concrete sections or multiple sections strut-and-tie and! An example of prepared bar bending schedule… part of slab depends on bending moment and deflection criterion … design slab. Spreadsheets can be reinforced concrete slab design by introducing drop Panel and columncapital positive at.. Reading materials available in the shortest time using modern varieties of concrete have tried to gather various reading available...