Design of steel deck diaphragms pdf

If you wish to order a hardcopy, next to each catalog you wish to receive, please. Design examples for steel deck diaphragm calculator web. Shear nailing of the roof diaphragm northsouth the diaphragm loaded in the northsouth direction has been selected to illustrate the design of a wood structural panel roof diaphragm. Diaphragm design manual sdi, 1981, the analytical approach should be only applied within the limits established by the research and tests. Aisispecifications for the design of coldformed steel structural members. Seismic design of wood lightframe structural diaphragm systems. Singlefamily residential wood lightframe construction.

This web seminar covers the design and analysis of untopped and topped steel deck diaphragms, including examples. Development of steel deck diaphragm seismic design. The load tables show the shear resistance of steel deck diaphragms based on. The sdi published the 3rd edition of the diaphragm design manual in 2004. Seismic design of composite steel deck and concretefilled curee. Hello, i have a concreteovermetal deck 2nd floor diaphragm and i am trying to design the collector elements and their connection to the deck. Calculate your unfilled deck diaphragm shear and stiffness for your exact condition based on the american iron and steel institute aisi s31016. Digital pdf steel deck on coldformed steel framing design manual no.

Openfront diaphragms a variety of challenges often occur on projects due to. Seismic design of castinplace concrete diaphragms, chords, and collectors. The app offers optimized steel deck design solutions based on cost or labor for a given shear and uplift. If fullcapacity design principles were required, much higher design forces would need to be applied for diaphragms. Once installed, these sheets can also be used as a horizontal brace and therefore the steel deck acts as a diaphragm. Steel deck uniform load determine the uniform gravity and winduplift load for steel deck based on strength, deflection, and attachment to supporting members. 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 bare steel deck diaphragms is anticipated.

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. Guide to the design of diaphragms, chords and collectors. The loads are already factored for the appropriate load combination. Building structures must resist the lateral forces to which they are subjected. Diaphragm and collector design diaphragm and collector design tonycampos88 structural op 6 may 14 19.

Analysis and design of steeldeckreinforced concrete. Diaphragms of concrete slabs or concretelled metal deck with spantodepth ratios of 3 or less in structures that have no horizontal irregularities. Effects of acoustic perforations on the bending strength and stiffness of steel roof deck download cssbi ssf 2810. Steel joists and steel deck load tables and design tools. Design example 2 n flexible diaphragm design diaphragm unit shear at the east side of line 3 and at line 9 is 6 000 160 850. 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. Cssbi publications list july 2011 all publications are available online in pdf format at.

This manual has evolved from the first edition of the steel deck diaphragm design. Analysis, testing and design of steel roof deck diaphragms. September 2015 the fourth edition of the sdi diaphragm design manual, ddm04, replaces the third edition, ddm03. This tool is so user friendly you can start using it. My question if the forces according to the equation 12. Each of these different deck types are described in the steel deck. Can be very flexible structures subject to drift, irregularity and stiffness issues.

The cyclic forcedeformation behavior of the steel deck diaphragms is based on the experimental results from the inplane monotonic and cyclic testing of steel roof deck diaphragms with nailed and. Fewer opportunities for shear walls at exterior wall lines openfront diaphragm conditions increased building heights, and potential multistory shear wall effects. Roof deck diaphragms in north america are commonly constructed of corrugated coldformed steel panels that are connected to one another at sidelaps and to the underlying structure. For simple metal roof deck design, the example studied herein showed that the roof deck would need to be increased from 0. This content is best viewed in adobe acrobat reader. Diaphragm design for nonresidential and multifamily buildings bryan readling, pe senior engineer, apa. Design example 1 seismic using allowable strength design asd, select a diaphragm for an inplane seismic load of 330 plf, assuming 18 gage framing at 4 foot on center and 22 gage wr steel roof deck. The fourth edition of the sdi diaphragm design manual, ddm04, replaces the. Design of these diaphragms for inplane shear forces can be carried out using the sdi diaphragm design manual. It is usually constructed of wood sheathing, steel deck or concrete. Material and design steel roof deck shall be united steel deck b, f, n, j, h or ls profiles as manufactured by canam and shall be made from steel conforming to astm designations a1008 ss 40, 50 or 80 for painted deck or a653 grade 40, 50 or 80 for galvanized deck.

Where fpx the diaphragm design force fi the design force applied to level i wi the weight tributary to level i wpx the weight tributary to the diaphragm at. Diaphragm and collector design structural engineering. The sdi diaphragm design method and aisi test standards for connections and diaphragms are covered, as well as the latest sdi ansi and aisi standards for steel deck design. Aisi newly developed standard aisi s310, north american.

Coldformed steel framing design guide aisi d111, coldformed steel purlin roof framing systems being updated. Our lightweight composite and non composite steel deck profiles have depths that range from 7. Development of steel deck diaphragm seismic design provisions for asce 41aisc 342 g. Association csa and recommended by the steel deck institute sdi. Roof deck historically, published diaphragm design tables for roof deck have been based on diaphragm shear loads only. Manual ddm01 and is based on research, testing and. Position paper on the design responsibility for steel deck diaphragms. Diaphragms serve multiple roles to resist gravity and lateral forces in buildings. Steel bridge, deck design, concrete deck, precast concrete deck, wood deck, metal grid deck, orthotropic deck 18. Asc steel deck offers a robust selection of products. Download our steel joists and steel deck load tables to facilitate the design of your next project featuring new millennium products. Ductile design of steel roof deck diaphragms for earthquake.

Fourstory steel braced frame building with steel beams and columns and concretefilled steel deck floor diaphragms. Diaphragm design manual third edition appendix viii addendum august 20 hilti pin xhsn 24. If the deck is wooden, it probably has enough stiffness to pennit the wheel load to act as a brace point but a design check is recommended, as given in appendix a. Indepth catalogs feature the latest information and are available in convenient, interactive pdf format. This guide addresses the design of diaphragms composed of steel beams and steel deck with concrete fill. Bracing system design splice design bearings substructure design deck design load rating corrosion protection of bridges design example. The simple design fonnulation summarized in appendix a are recommended for use in all steel bridges. Seismic design of composite steel deck and concretefilled. Schafer 1 abstract the objective of this report is to provide the background work for the development of recommended seismic design provisions for steel deck diaphragms utilizing asce 41. Presentation assumptions flexible wood sheathed or untopped steel deck diaphragms can also apply to semirigid and rigid diaphragms loads to diaphragms and shear walls strength level or allowable stress design wind or seismic forces.

The sdi diaphragm design method and aisi test standards for connections and. Bridge mounted sign bracket requirement pdf 45 kb inactive design memorandums. This tool is so user friendly you can start using it in minutes without spending hours in training. This document is available to the public through the national technical information service, springfield, va 22161. Design the steel deck sheets used for roofs and floors provide support for gravity loads between the joists andor beams. It makes calculations for any solution generated and produces a submittal package that includes fastener information, code reports, factory mutual reports, appendix vii of ddm03, coating information and tools for installation. Each catalog can be viewed online, downloaded or ordered where you will receive a hard copy in a few days.

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 bare steel deck diaphragms. Its a simple, quick and easytouse tool called the steel deck diaphragm calculator for designing steel deck diaphragms. Each design example includes analysis and design of the diaphragm, determination of chord forces, determination. Just as the floor or roof is checked for vertical load capacity, it is considered a diaphragm in the plane of the floor and check for shear when designing the lateral force resisting system. Steel deck panels are supplied with both galvanized and painted finishes to meet an array of project finish requirements.

Steel roof deck diaphragms on coldformed steel framing. Floor and roof diaphragms shall be designed to resist design seismic forces from the structural analysis, but not less than the following forces. L20212, diaphragm design with pneumatically driven pins l30009, design of end posts for diaphragm. The use of the steel roof deck diaphragm as the energydissipating element in the lateral load carrying path of singlestorey steel buildings is investigated. Diaphragm design diaphragm design information for vulcraft roof and floor decks is based on the steel deck institute diaphragm design manual, third edition ddm03 in accordance with the 2015 ibc. The design capacity of the diaphragm is the lesser of the shear strength and panel buckling capacities. Seismic design of wood lightframe structural diaphragm.

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