Steel deck slab design pdf

Longspan composite steel deck slabs blend the speed and versatility of steel construction with the performance and durability of concrete, enabling a holistic approach to spaceefficient structural designs. A 2 2area 2 a c 2 2 posttensioned concrete design table 11 list of symbols used in the aci 31808 code cp area enclosed by the outside perimeter of the section, in a g gross area of concrete, in a 2 l total area of longitudinal reinforcement to resist torsion, in a o area enclosed by the shear flow path, sqin a oh area enclosed by the centerline of the outermost closed. Types of profiled steel sheet there are many types of profiled steel sheet used in composite slabs. Reinforced concrete design 1 design of slab examples. Sdimoc, manual of construction with steel deck, 3rd edition e. In addition, the deck also acted as the formwork for the concrete. Design of steel deck for concentrated and nonuniform loading. The first example is of multigirder form, the second is of ladderdeck form. Analysis and design of steel deck concrete composite slabs by budi r. Figure 27 reinforcing steel for negative flexure in deck. Efficient composite floor systems can be obtained by optimally utilizing the materials, which includes the possibility of developing long span composite slab systems. The slab rests on steel tbeams with flanges oriented in the bottom. The first edition of the sdi steel deck on coldformed steel design manual. For this purpose, new deck profiles that can have a longer span and better interaction with the concrete slab are investigated.

The tables in appendix a are for composite deck and composite deck slabs with the yield strength of the deck equal to 33 ksi. Pdf 3 analysis and design of deck slab satya narayana. Standards the sdi developed the fol lowing standards for steel floor decks, roof decks, and. The cross section of the profiled sheeting is shown in fig. Nagy 1 and istvan szatmari 2 technical university of budapest, department of steel structures h1521 budapest summary there is an enhanced intention imposed on building construction industry to improve time and structural efficiency of structures. The sectional design model is appropriate for the design of a typical bridge girder, slabor other region, of components where the assumptions of traditional beam theory are valid. Introduction composite design is when a structural member composed of two or more dissimilar materials joined together and acts as a unit. Specifying form deck helps eliminate the need for expensive temporary shoring. Structural steel design project calculation sheet checked by pu date 080800 check the adequacy of the continuous composite profiled deck slab with spans of 3. The first edition of the sdi steel deck on coldformed steel design manual points out those differences and provides the design guidance that is necessary to enable steel deck to.

The examples cover the principal steps in the verification of the. Roofdeck is a spreadsheet program written in msexcel for the purpose of analysis and design of roofs with steel deck. In passing, the guide addresses some issues related to the design of diaphragms with noncomposite bare steel deck, but a future technical brief devoted entirely to. The first example is of multigirder form, the second is of ladder deck form. By interlocking the steel deck and the concrete slab, the deck became the positive moment reinforcement in the reinforced concrete slab. Steel profile deck, shear connectors, construction stage and composite stage 1. Reinforced concrete slab design and detailing guide is456. Each catalog can be viewed online, downloaded or ordered where you will receive a hard copy in a few days. Ce 479 fall 05compositefloor decks purdue university. Aisc live webinars american institute of steel construction. If you wish to order a hardcopy, next to each catalog you wish to receive, please.

Department of transportation bridge deck design using grade 60 steel astm a615, f y 60 ksi and epoxycoated reinforcing steel was compared to deck slab specimens where grade 60 is replaced with crr bars. Fa b r ic may also be supported at the center of the slab, or it may be installed in two flat layers with the top layer negat i v e steel extending on either side of the support for onequarter of the. To examine the ultimate loadcarrying capacity of the proposed deck slab system under sagging and hogging bending actions, two fullscale deck slab specimens supported by a set of steel box blocks. The lateral loads are independently resisted by shear walls. For this and all other example problems the following data from the canam united steel deck design manual and catalog of steel deck products will be used and are worked using lrfd methodology. Effective depth, d e total slab thickness top cover 12 bar diameter. It was developed to provide a structurally efficient product for use in roof and floor systems.

Easterling, chairman department of civil engineering abstract as coldformed steel decks are used in virtually every steelframed structure for composite slab systems, efforts to develop more efficient composite floor systems continues. Composite steel floor deckslabs steel deck institute. C 2011 standard for composite steel floor deck slabs american national standards institute steel deck institute steel deck s institute the steel deck institute has developed the material contained herein. Twoway joist concrete slab floor waffle slab system. This publication presents worked examples of the detailed design of two composite highway bridges. Introduction coldformed steel deck sections are used in many composite floor slab applications wherein the steel deck serves not only as the form for the concrete during construction, but also as the principal tensile. Structural steel composite slab 1 of 7 rev design project. September 2015 the fourth edition of the sdi diaphragm design manual, ddm04, replaces the third edition, ddm03. The sectionaldesign model is appropriate for the design of a typical bridge girder, slabor other region, of components where the assumptions of traditional beam theory are valid. Standard composite deck has embossments in the vertical ribs that bond with the concrete slab to develop a composite floor system. Pdf design of composite slabs with profiled steel decking. Specialty conference on coldformed steel structures. Composite design provides an advantage in reducing the necessary section of primary members and also serves to.

Steel deck is a cold formed corrugated steel sheet canam. Simply supported one way slab modification factor for span less than 7 m 1. Steel bridge, deck design, concrete deck, precast concrete deck, wood deck, metal grid deck, orthotropic deck 18. Once the concrete cures, the resulting composite floor system provides superior strength and stiffness. Steelconcrete composite bridge deck slab with profiled.

Steel structure, deck slab, design system, education. Steel deck institute sdi cosp 2014 code of standard. Manuals and handbooks digital pdf steel deck on coldformed steel framing design manual no. This paper presents the structural behavior of composite concrete slabs with cril deckspantm colour roof india limited cril, mumbai, india type profiled steel decking by experimental and analytical studies. The design and usage of steel deck on coldformed steel framing is similar to deck supported on open web steel joists or rolled beams, but there are some differences. For use when metal deck is used as a leave in place form. Pdf this paper presents the structural behavior of composite concrete slabs with cril deckspantm colour roof india limited cril, mumbai, india. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is 456. Knowledgebased structural design system of steel deck slab for. Sdcfsfdm the design and usage of steel deck on coldformed steel framing is similar to deck supported on open web steel joists or rolled beams, but there are some differences. Composite steel floor deck slabs steel deck institute. Department of transportation bridge deck design using grade 60 steel astm a615, f y 60 ksi and epoxycoated reinforcing steel was compared to deck slab.

Seismic design of composite steel deck and concretefilled. The result is this publication, the steel deck institute design manual for composite decks, form decks and roof decks, a. Sdiddm, diaphragm design manual, 3rd edition, including. Hence, compressive forcencf in concrete is equal to steel yield force npa. Asc steel deck offers a robust selection of products. Sdi c2011, standard for composite steel floor deckslabs b. Our lightweight composite and non composite steel deck profiles have depths that range from 7. Coldformed steel deck sections are used in many composite floor slab applications wherein the steel deck serves not only as the form for the concrete during. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. Explain steel deck production basics, the range of steel deck types, their profiles and features explain steel deck design terminology and design criteria discuss ways to optimize steel deck design to enhance architectural aesthetic goals, building performance and total project cost control. The resulting combined section steel roof deckand floor deck 2 how to series. The design and spacing of expansion and control joints is genera l l y. The manual and advisory safety code of practice for concrete pumping67. Coldformed steel steel deck institute the steel deck.

Savings in steel weight are typically 30% to 50% over noncomposite construction greater stiffness of composite beams results in shallower depths for the same span. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. Design of steel deck for concentrated and nonuniform loading cody trueblood, new millennium. Sci p300 composite slabs and beams using steel decking best. Deflection unlikely to govern mw transverse weak axis bending mn, mr proprietary deckslab bending no studs. The flooring composite slab is made of concrete, steel reinforcement and profiled sheets t153 ruukki serving as a permanent formwork. A comparison between experimental and analytical studies article pdf available december 2012 with 9,803 reads how we measure reads. Following are the rcc slab design and detailing guidelines. Solve for the required amount of reinforcing steel, as follows. Lrfd steel girder superstructure design example lrfd. Structural design guidelines for concrete bridge decks. Through the provision of throughdeck welded stud shear connectors, the composite slab may be used to provide restraint to the steel beams.

Reinforced concrete design 1 design of slab examples and. The main structural and other benefits of using composite floors with profiled steel decking are. Missouri university of science and technology scholars mine. The institute has made a diligent effort to present accurate, reliable, and useful information on design of composite steel deckslabs. Steel deck is a cold formed corrugated steel sheet supported by steel joists or beams. Sdi nc2010, standard for noncomposite steel floor deck c. It includes information for the design of steel deck diaphragms for roof and floor decks and complies with the requirements of the ansiaisi s31020 north american standard for the design of profiled steel diaphragm panels. In addition to general ultimate and serviceability limit state design issues, practical design considerations such as the formation of holes in the slab, support details, fire protection, and attachments to the slab are discussed. Steel deck s institute floor deck design engineering manual first edition appendix a 2014. This guide covers the design and construction of composite slabs and beams, and.

Example calculations canam buildings steel buildings. Design of composite slabs with profiled steel decking free download as powerpoint presentation. Its design and fabrication maximizes the properties of the steel in order to create a high. Composite slabs consist of profiled steel decking with an insitu reinforced. Asc steel deck is an industry leader offering products that meet the needs of the most complex conditions and demands for structural performance and design. Grdslab is a spreadsheet program written in msexcel for the purpose of analysis of concrete slabs on grade. Each bridge is formed by steel girders acting compositely with a reinforced concrete deck slab. The system also includes shear studs installed and supplied by others, to provide a composite floor system that allows for the loads to be transferred into the steel frame. This document is available to the public through the national technical information service, springfield, va 22161. Fa b r ic may also be supported at the center of the slab, or it may be installed in two flat layers with the top layer negat i v e steel extending on either side of the support for onequarter of the span see fi g u r e 1. Applying these provisions to the design of deck slabs rarely controls deck slab design. The negative flexure reinforcing steel design is similar to the positive flexure reinforcing steel design.

Design of longspan composite steel deck slabs bdc university. Vulcraft provides a number of resources to help you efficiently and successfully specify steel joists and deck. Steel deck new millennium building systems composite. It is used to support concrete or insulating membrane of a roof. Coldformed steel components of the steel deck system other than the steel deck, which may include, but are not. Steel deck panels are supplied with both galvanized and painted finishes to meet an array of project finish requirements. Introduction coldformed steel deck sections are used in many composite floor slab applications wherein the steel deck serves not only as the form for the. The slab is propped at the centre during construction stage. This guide addresses the design of diaphragms composed of steel beams and steel deck with concrete fill. There was an affair of structural calculation forgery problem known as a. Design of composite slabs with profiled steel decking.

Lysaght wdek design and structural steel decking system. Special design example 5172017 20 from earlier in the memo, for a 7 slab with 2 wearing course, eod thickness and. Welding cross wires to the top of the steel deck shape epic system deformations on the interior surface of the deck united steel deck, vulcraft and others. Design recommendations for steel deck floor slabs scholars mine. However, a related cost consideration is the spacing of structural members. The design of composite slabs and beams is discussed in detail in relation to the eurocodes and bs 5950. American national standards institute steel deck institute c. The slab is created by composite interaction between the concrete and steel deck with embossments to improve their shear bond characteristics. They are engineered to reduce story height while maximizing ceiling height and address marketspecific building requirements. A copy of the tables is provided in the appendix and also shown on pages 42 and 43 of our design manual and catalog of steel deck products. The provisions in this article are meant for slab type bridges and their purpose is to limit deflections under live loads. The provisions in this article are meant for slabtype bridges and their purpose is to limit deflections under live loads. Analysis and design of steel deckconcrete composite slabs.