LYSAGHT W-DEK® - BlueScope Steel
Contents
1. 5 3 Software flowchart 0 ccc cece eee ees 6 4 LYSAGHT W DEK design software menu 7 5 Input dialogue box 0 c cece eee eee eee eens 8 Br SONO naciente peda roads 8 5 2 Conditions of exposure oococococccccccoo ees 8 Da DGS somes beets eae eee eee a eee EE 4 8 5 4 Composite slab deflection limits 10 5 5 Crack control for flexure 0 cece eee eee 10 5 6 Creep and shrinkage factors oooooooommm 10 5 7 Degree of control of shrinkage and temperature effects 11 5 8 Cover to negative bar cece cee eee ees 12 e PCOS PPPPPPP U0 O UP acne ees 12 5 10 Shrinkage reinforcement cece cece eee ees 12 5 11 Loading parameters 0 cc cece eee 13 6 Design dialogue box 00 cc cece eee 15 SRE E iE a enp cies T een caure E EE E E E E 15 0 100 SD ee eee sa 16 6 3 Formwork deflection liMitS oo oooo 16 6 4 Support width noreste r et rep vela 16 A II ae ene 17 00 Eros cerrara tras ecru Ratanule os 17 7 Design Check dialogue boxX 18 A ah cece wpa eno E E E E E 18 1 2 Slab UNMCKNCSS erras ada pia vw can a 18 8 Results window 0 00 ccc cee eee eee eae 19 G Generali ce cideeds islands 19 9 Warning Messages 0c cece cee eee eee 22 10 Sample report 0 ccc cece eee eens 24 11 Software Disc 02. 0 3L reinforcement 100mm minimum Wall Wall Transverse wire of mesh reinforcement Concrete Cover o G3 mi lt E I Minimum 70mm Positive tensile and LYSAGHT W DEK Fire Fire detail 2 Temporary reinforcement IO Minimum 50mm a ss Ln _________ LE gt _ L span fg L span ATW Restraint at Continuous over end support interior support by mass of wall Figure 36 LYSAGHT W DEK Pattern 1 for conventional standard reinforcement 1 Negative top tensile reinforcement shall be placed within a permissible zone for fire rated slabs Negative reinforcement may be placed outside permissible zone if design for fire is not required If it is necessary to place negative reinforcement outside the permissible zone for fire rated slabs the design is possible through consultation with Customer Support which is accessed via Steel Direct 1800 641 417 2 Positive tensile reinforcement Is given as extra area to fire reinforcement Detail 2 and may be placed outside the permissible zone Alternatively fire bars Detail 2 may be specified with increased diameter to satisfy requirements for positive tensile reinforcement 3 At least one bar per rib is recommended for all types of reinforcement except mesh 20 LYSAGHT W DEK Design Software User Guide 2010 Little or no restraint at end support Negative top tensile and Fire Fire detail reinforcement
3. Design software User s Guide LYSAGHT W DEK T r i i e A r 4 i J ma A p s Te ig K A E z B y i y E a 3 z jz T E rin i i E E E z 1 3 qe a A o a uz iz A E Ja f J Y y e n T i Ba 5 3 J rar i al i iy Mi T n e y i a r ol y q j _ H AE y ai ig e T i n ee os a 7 L E E E J Pia e j gt 5 a gt E i i s LA Mg a cla Ma 1 6 n msi la g P 2 M EE F T n m t m ua 7 m E i ig pm F gt i j i E ms A Ta a a p ma ee A G a F a z P i F j FE mn Lk i ee 1 T iii a a x i a e a t p a ik a Pus in ka i Mb te a Ma m ei A cel y F i mL LAN A L z z DS e qe ee i F F a iba E E a i Y a A 3 E ra E 3 E A PU Y E m y y ar gt la A mh q U go o o P i wig of iF Es p F i A Fer i ES a mn ti E a s a al iin ea E 5 m E m la 2 i 4 L aL See a e aF i 4 rn os 4 h la a i a 7 m 4 a E 5 i l oa z Pp oy F g EF i a La ae i E r e Fas 7 i z 7 y Ea 7 e FE as i a F p D e a l Fra a a Y Pl EM d a i z nn a LS ya yir ES D dd a it La MGT Th PE a e Getting exceptional results from LYSAGHT W DEK for composite concrete slabs e Acts as permanent formwork with minimal propping and no stripping of formwork e Works as composite slab saving on concrete and reinforcement costs e Formwork tables are optimised for steel trame co
4. AS 3610 1995 Table 4 5 1 M M lt f M u Pr Fr v lt f Vu kNm m kNm m kN m mm4 m MPa kPa kPa kPa kPa kPa kPa kN kPa kPa kPa kPa kNm m kN m Not applicable for partial plastic analysis Dtot Dtot max Dtot lt MIN Dtot max LYSAGHT W DEK Design Software User Guide 6 6 3 2 23 0 775000 0 550 0 200000 0 09 3 47 3 0 2 31 1 0 1 0 2 0 0 3 1 5 9 6 8 3 6 6 53 OK 10 4 OK 14 6 23 8 OK 2010 25 Composite slab design MATERIAL PROPERTIES AND SLAB GEOMETRY Yield stress of mesh reinforcement fy Lysaght W sheeting yield stress fy sh Yield stress of reinforcing bars fy bar Longitudinal shear capacity Tu Rd orEN 1994 1 1 Clause B 3 6 Ratio of compressed stress block y Long term shrinkage and creep factor ksc AS 3600 2001 Clause 8 5 3 3 Modulus of elasticity of concrete EC AS 3600 2001 Clause 6 1 2 Shrinkage induced tensile stress fcs AS 3600 2001 Clause 8 5 3 1 Depth of Lysaght W hr Distance from centroidal axis of Lysaght W Ysh eff to extreme fibre in tension Distance from plastic neutral axis of Lysaght W ep to extreme fibre in tension prEN 1994 1 1 Clause 9 7 2 Effective cross sectional area of Lysaght W Ape orEN 1994 1 1 Clause 9 7 2 LOADING Concrete slab self weight G concrete reinforcement and sheeting Superimposed Dead Load Gsup Live Load Q LOAD COMBINATIONS Strength 1 Fu 1 5 G_ the rest of spans AS 1170
5. Chapter 5 3 of this Guide and the flowchart Figure 31 Design Design Check Design amp Design Check Options Design for Fire Required C Not required This Dialogue box has the same options as Design dialogue Figure 32 box with an addition of Slab thickness option Design Check dialogue box 7 2 Slab Thickness Figure 33 Slab thickness The slab thickness may vary from 130 to 250 mm The user shall type in the necessary slab thicknesses Slabs thicknesses of more than 250 mm are considered as not practical LYSAGHT s Steel Direct shall be contacted to design slabs with more than 250 mm thickness Contact details are on back cover 18 LYSAGHT W DEK Design Software User Guide 2010 8 Results Window 8 1 General The Results window will appear on the screen automatically when the user clicks the Design or Design Check buttons on the relevant Dialogue box Alternatively the window may be opened by clicking on the Results worksheet at the bottom of the Excel window The window shows the design summary Design Output and the list of entered parameters in Input Design or Design Check dialogue boxes Input parameters 4 Use Analyse Menu on the top of the screen fo open dialog boxes again 2 Project Name _ Lysaght Wek Design Solteve Versi n 2 0 3 Lysaght Typical eri Desg ig Tidy i riri 11 Top neg 12 Pattem of 13 AS TAE al EID Aen 9 7 15 reinforcement additional for DS
6. Span using Design Check dialogue box minimum thickness using Design dialogue box 2010 4 LYSAGHT W DEK Software Menu LYSAGHT W DEK design software Menu options are built into Excel Menu on the top of the screen Excel Menu may look different from what is shown below There are three additional Menu options Analyse LYSAGHT W Print LYSAGHT W Report LYSAGHT W E ple got Yew Iset Format Tools Data Windom teb Analyse Lysagh P Figure 1 Analyse Menu Analyse LYSAGHT W Menu has three submenu options Input e Design Design Check These options will be described in details in further chapters When the software is opened the Input dialogue box will appear on the screen automatically see cover page For the second and consecutive runs the user shall access the Input dialogue box through Menu Print LYSAGHT W Menu allows the user to print Output Input information or Report Lysaght W Print ysaght e Figure 2 Print LYSAGHT W Menu Report LYSAGHT W Menu will generate detailed design report which is described in more details in Chapter 10 A OOl Figure 3 gt V Pork Cersa Report Lysaghtw Report LYSAGHT W Menu It shall be noted that LYSAGHT W Menu options are available only when LYSAGHT W DEK design software Excel file is activated LYSAGHT W DEK Design Software User Guide 2010 1 5 Inpu
7. intended to be an aid for all trades and professionals involved with specifying and installing LYSAGHT products and not to be a substitute for professional judgement Terms and conditions of sale available at local BlueScope Lysaght sales offices Except to the extent to which liability may not lawfully be excluded or limited BlueScope Steel Limited will not be under or incur any liability to you for any direct or indirect loss or damage including without limitation consequential loss or damage such as loss of profit or anticipated profit loss of use damage to goodwill and loss due to delay however caused including without limitation breach of contract negligence and or breach of statute which you may suffer or incur in connection with this publication Copyright BlueScope Steel Limited 9 February 2010 For technical information contact steeldirect bluescopesteel com or call 1800641417 www lysaght com Please check the latest information which is always available on our website LYSAGHT AND LYSAGHT W DEK are registered trademarks of BlueScope Steel Limited ABN 16 000 011 058 The LYSAGHT range of products is made by BlueScope Steel Limited trading as BlueScope Lysaght Printed by BMP 1M 02 10 GZ BLUESCOPE LYSAGHT 9 320075 061029
8. 0 eee teens 21 2010 3 1 Introduction This User s Manual is designed to provide you with basic familiarity about LYSAGHT W DEK design software to enable you to quickly understand and start using this powerful tool The software is able to perform major tasks normally performed at a structural consultant s office Use LYSAGHT W DEK Design and Construction Manual with its set of tables When input parameters are different from those listed for tables or the user wants to check several different options the software will help with that The software offers following additional design options as compared to tables Two major design options Design and Design Check The first option will perform design with the minimum possible slab thickness the second one will check the chosen slab thickness and design the rest of the parameters Selection of exposure classifications A1 A2 B1 and B2 25 32 and 40 MPa concrete grades Superimposed dead load other than 1 kPa Other than office types of imposed loads Composite slab deflection limits L 250 for total loads and L 500 for incremental deflection Equal spans For negative positive fire and shrinkage reinforcement use D500N D500L or 400Y User specified bar diameter Specified number of continuous spans two span three span etc Degree of control for shrinkage and temperature effects All fire rating periods 30 60 90 120 180 an
9. 1 1989 AS 3600 2001 Clause 7 6 4 2 Fu 1 5 G_ the rest of spans EN 1990 Section 6 Deflections Total propped Fs tp 1 Ksc G ys k QY Total unpropped Fs tup 1 Ksc Gsup csyi Q k Incremental propped F ks ipscG wswi Q Kes Incremental unpropped F Ks iupscGsups Kesy W Q AS 3600 2001 Clause 8 5 26 LYSAGHT W DEK Design Software User Guide MPa MPa MPa MPa MPa MPa mm mm mm mm kPa kPa kPa kPa kPa kPa kPa kPa kPa kPa kPa 2010 500 550 500 115 0 822 28600 0 4113 78 32 78 711 3 40 mb 11 51 skel 11 95 5 95 N A 9 00 N A 8 00 11 Software Disc LYSAGHT W DEK Design Software User Guide 2010 21 Product Descriptions All descriptions specifications illustrations drawings data dimensions and weights contained this catalogue all technical literature and websites containing information from BlueScope Lysaght are approximations only They are intended by BlueScope Lysaght to be a general description for information and identification purposes and do not create a sale by description BlueScope Lysaght reserves the right at any time to a supply Goods with such minor modifications from its drawings and specifications as it sees fit and b alter specifications shown in its promotional literature to reflect changes made after the date of such publication Disclaimer warranties and limitation of liability This publication is
10. Negative top tensile and 100mm minimum Fire Fire detail 0 3L 0 3L reinforcement ee 2 2 gt lt Cover A Concrete slab NOO O a Ma lt 0 3Ln lt Positive tensile and ri Minimum Tomm bearing length LYSAGHT W DEK Fire Fire detail 2 Temporary Bone reinforcement prop 3 Minimum 50mm i E bearing length a 2 2 II Ly gt d L span lt gg A L span Little or no restraint at end support Restraint at Continuous over end support interior support by mass of wall Figure 37 Pattern 2 of top tensile negative Pattern 2 for negative reinforcement shall be used when reinforcement Live Load exceeds twice the dead load Every third bar of negative reinforcement at support shall continue all over the span for Pattern 2 only Fire shall be designed for one option only Fire detail 1 or Fire detail 2 LYSAGHT W DEK Design Software User Guide 2010 21 9 Warning Messages Shab can not be designed be apepciied tickpess Bada design parameterd or contact Customer Support Carre Slab can not be designed to specified thickness This message means that the minimum possible slab thickness shall be more than specified by the user using Design Check option The user may e Increase slab thickness specified using Design Check option e Reduce minimum required slab thickness by e Increasing concrete grade e Decreasing Tensile and Compression
11. OOL total for D500 mer 16 Fire reinforcement additional to Sea TE Bottom terse ponte reinforcement git Wi sheeting Input parameters Diameter Continuous Spans Three spans LI Ls p Composite Slabs NO L eff mm 3100 Q live load 5 kPa Formwork Deflection Visual quality not important G superimposed dead load 1kPa Limits Q weight of stacked materials Formwork sheets continue Three or more spans construction stage 1 4kPa over number of spans Vs 0 7 Crack control YI 0 4 for shrinkage and Moderate Fire Design Required temp Required Fire Resistance Periods 120 min 32MPa Shrinkage Reinforcement Grade Mesh or transverse bar Fire Reinforcement Options Fire Detail 1 Positive and Fire Reinforcement 12mm Environment for shrinkage Arid interior Mesh longitudinal bar spacing mm Cover to top reinforcement mm 20 Support width mm 300 Figure 34 Results window LYSAGHT W DEK Design Software User Guide 2010 19 The reinforcement types in the Design Output table is explained in the following Figures Negative top tensile and Fire Fire detail Concrete reinforcement PR cover L 2 aja 5 o E E vanes anA a 4 LYSAGHT W DEK l Mesh reinforcement Positive tensile and pi Fire detail 2 Permissible zone for fire Ire RMIEINE and top tensile negative reinforcement Figure 35 Slab cross section Negative top tensile and Fire Fire detail 1 reinforcement Fire Fire detail
12. age reinforcement Users can specify the diameter of reinforcement and spacing for longitudinal bars if the reinforcement grade is D500N The detailed definition of Shrinkage reinforcement and its location within the composite concrete slab Is given in AS3600 2001 Clause 9 4 3 If rectangular mesh RL is specified it shall be oriented such as more steel is spanning in transverse perpendicular to sheeting direction 12 LYSAGHT W DEK Design Software User Guide 2010 5 11 Loading Parameters Figure 21 Superimposed dead load Superimposed dead load G is a load of permanent nature in addition to self weight of composite concrete slabs Figure 22 y load factor y and yy are factors for Live Imposed Loads Live Load itself shall be entered in Design or Design Check dialogue boxes which are described in next Chapters Refer to AS1170 0 2002 for more information LYSAGHT W DEK Design Software User Guide 2010 13 Figure 23 Stacked materials This is the weight of Storage loads as specified in AS3610 1995 Clause 3 2 5 during construction stage before concrete Is placed The value of the Storage Load is 4kPa A 1kPa option is available If load is less than 4kPa Is specified it shall be clearly shown on formwork documentation and controlled on construction site 14 LYSAGHT W DEK Design Software User Guide 2010 6 Design Dialogue Box 6 1 General When the user entered all necessary parameters i
13. d 240 min Variable loads due to weight of stacked materials during construction stage Design with relaxed crack control requirements for flexure Support width User specified concrete cover The software is developed as a powerful tool to minimise time and efforts necessary by a consulting engineer to complete the job However it is essential for the user to have Good knowledge of structural engineering Familiarity with design of composite concrete slabs Sound knowledge of local regulations and load requirements For more information and technical support contact Steel Direct on 1800 641 417 4 LYSAGHT W DEK Design Software User Guide This warning symbol means the user shall take care before proceeding further This symbol means that there is more information on this topic in other chapters This symbol means that the user shall refer to the relevant Australian Standard or Eurocode for more information y This symbol means that this is important information The user shall ensure they understand before proceeding 2010 2 Getting Started 2 1 Computer Requirements To run LYSAGHT W DEK design software your computer must have Microsoft Excel 2000 or a later version on Windows platform 2 2 Installing LYSAGHT W DEK Design Software The LYSAGHT W DEK design software CD is fixed on the inside back cover of this Guide It contains LYSAGHT W DEK design software Excel file User s G
14. ditions of sale are available at local BlueScope Lysaght sales offices Except to the extent to which liability may not lawfully be excluded or limited BlueScope Steel Limited will not be under or incur any liability to you for any direct or indirect loss or damage including without limitation consequential loss or damage such as loss of profit or anticipated profit loss of use damage to goodwill and loss due to delay however caused including without limitation breach of contract negligence and or breach of statute which you may suffer or incur in connection with this publication LYSAGHT LYSAGHT W DEK and GALVASPAN are trademarks of BlueScope Steel Limited A B N 16 000 011 058 The LYSAGHT range of products is exclusively made by BlueScope Steel Limited trading as BlueScope Lysaght All rights reserved No part of this brochure may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical recording or otherwise without written permission of BlueScope Steel Limited ABN 16 000 011 058 Copyright BlueScope Steel Limited February 9 2010 Produced at BlueScope Lysaght R amp D Department www bluescopesteel com 2010 Contents LYSAGHT W DEK Design Software User Guide 1 INTOOUGCHION circa 5 2 Getting started 0 ccc cee eee ene 5 2 1 Computer requirements 0 cece eee eens 5 2 2 Installing LYSAGHT W DEK design software
15. e construction or design details are not required You should check the relevant Codes associated with the construction or design 2 LYSAGHT W DEK Design Software User Guide Warranties Our products are engineered to perform according to our specifications only if they are installed according to the recommendations in this manual and our publications Naturally if a published warranty is offered for the product the warranty requires specifiers and installers to exercise due care in how the products are applied and installed and are subject to final use and proper installation Owners need to maintain the finished work Preface LYSAGHT W DEK design software is a user friendly Excel based software for the design of composite concrete slabs with LYSAGHT W DEK structural decking It is suitable for steel frame construction LYSAGHT W DEK design software is developed to Australian Standards AS whenever possible Eurocodes have been used when certain design procedures are not available in Australian Standards It is a tool developed with latest information to assist a competent engineer with the most competent solution The software should be used to design composite slabs in conjunction with the LYSAGHT W DEK Design amp Construction Manual Disclaimer warranties and limitation of liability This publication is intended to be an aid for professional engineers and is not a substitute for professional judgement Terms and con
16. eflection limits Figure 27 Support width 2010 6 5 Live Load Figure 28 Live load Live Load Q shall be specified as required by AS1170 1 2002 6 6 Fire Design i el H oS eee ALA 1 Es MOL reg L hi z j e ia Somme meal E a E a a i A A e om Moa E a at l a Ll y i a 1 a i gt E 1 Ley pol S pa pee cere Sota Ea j a A a de El ds inca i r ples pe Taea period E ARCE perio M s Mi o ee Fa a o Figure 29 Fire design Figure 30 a y Fire reinforcement option Design for Fire Required Not requ The user may specify Fire resistance periods of 30 60 90 120 180 and 240 minutes as defined by AS3600 2001 Section 5 0 a a aes i E or a at ho a oe d a LYSAGHT W DEK Design Software User Guide 2010 17 7 Design Check Dialogue Box 7 1 General When the user entered all necessary parameters in the Input dialogue box the next step would be to click Design or Design Check button at the bottom of the Input dialogue box This will open one or another dialogue box The Design option is used when the user wants to design the slab to the very minimum slab thickness Design Check option shall be used when the slab thickness is known user controlled It may be in a case when the architect specified the slab thickness for other than structural reasons or Interior spans shall be designed to the slab thickness as required for End spans see
17. ign Menu option to get the minimum possible slab thickness Then Interior Spans shall be designed with the slab thickness obtained for End Spans using Design Check Menu option When the slab has five or more spans the thickness of Interior Spans other than first Interior Span may be specified independently from End Spans See flowchart on page 6 End and Interior Spans are the same thickness LYSAGHT W DEK End span negative Interior span negative reinforcement reinforcement End Span Interior Span Figure 7 Spans Slab thickness of Interior Spans Interior span reinforcement may be reduced Max as required for adjacent spans 5 End Span a First Interior Span A Interior Span gt LYSAGHT W DEK Figure 8 Spans Figure 9 Ratio of Spans The user may specify all spans as equal spans and with maximum Ratio of longer to shorter adjacent span of 1 2 The software options for irregular lay outs with higher ratios of adjacent spans is not currently available contact BlueScope Lysaght R amp D for more information LYSAGHT W DEK Design Software User Guide 2010 5 4 Composite Slab Deflection Limits cones LizS0tot and LiSOOinc y The software is developed for Span 250 Composite slab deflection limits due to total load and two options for deflections limits due to imposed loads Span 500 is recommended by AS3600 2001 TABLE 2 4 2 for concrete slabs which support brittle partitions like mas
18. minimum concrete grade of 40MPa Figure 15 Negative positive and fire reinforcement Negative Bar size mm grade a ee ee Figure 16 Negative bar sizes Lysaght W metal thickness bmt Positive and fire bar sizes Figure 17 LYSAGHT W DEK BMT base material thickness LYSAGHT W DEK Design Software User Guide 2010 11 The software may design composite slabs using 0 75 BMT or 1 0 BMT sheets The user may try 0 75 BMT for the first run If the design is not economical props are necessary next run with increased BMT may be necessary Contact Steel Direct to design slabs with 1 2 BMT LYSAGHT W DEK 5 8 Cover to Negative Bar 3 Figure 18 Lysaght W metal thickness bmt p Cover to negative bar Users shall specify appropriate covers to ensure that the concrete can be satisfactorily placed and compacted around reinforcement in accordance with the requirements of AS3600 2001 Clause 19 1 3 and 4 10 5 9 Fire Design Required Not required Figure 19 Fire Design At this stage the user shall specify if the Design for fire is required or not The requirements for Fire Reinforcement and its location within the composite concrete slab is given in Chapter 8 5 10 Shrinkage Reinforcement This reinforcement is necessary to control cracking due to shrinkage and temperature effects in transverse direction Shrinkage reinforcement can be specified as mesh or bars Figure 20 Shrink
19. n the Input dialogue box the next step would be to click Design or Design Check button at the bottom of the Input dialogue box This will open one or another dialogue box The Design option is used when the user wants to design the slab to the very minimum slab thickness Design Check option shall be used when the possible slab thickness is known User controlled See flowchart on page 6 a ur A i a PA I i aa man ii Tea ra En TESTIS CCAA Po m am a a os wig Figure 24 Design dialogue box LYSAGHT W DEK Design Software User Guide 2010 15 6 2 Slab Span Parameters The user shall type in the span length It shall be centre to centre span see Chapter 8 of this Guide for more details The range of possible spans is from 1 8 to 6m 6 3 Formwork Deflection Limits Formwork deflection limits shall be specified as required by AS3610 1995 and AS2327 1 Span 240 visual quality important deflection limit is recommended for slabs in which good general alignment Is required It is suitable for a Class 3 or 4 surface finish L 130 visual quality not important deflection limit is suitable for Class 5 surface finish 6 4 Support Width This is a width of a supporting structure steel beams It is important to enter correct value it may result in smaller BMT of the LYSAGHT W DEK formwork 16 LYSAGHT W DEK Design Software User Guide Figure 25 Slab span gt Figure 26 Formwork d
20. nstruction LYSAGHT AUSTRALIAN MADE Background LYSAGHT W DEK is a new innovative profiled steel decking which brings greater economy and design freedom to building with composite concrete slabs Our design engineers scoured the globe to find the best W profiles in the world After careful examination our engineers incorporated the best aspects of each profile into new LYSAGHT W DEK The profile has been specifically developed for Australian high tensile steels which makes LYSAGHT W DEK one of the best performing VW profiles in the world LYSAGHT W DEK is a profiled zinc coated high tensile steel decking for use in the construction of composite floor slabs It has exceptional composite performance no additional reinforcement is required in most applications It can be used as formwork during construction and as a reinforcement system in composite slabs Our increased understanding of composite slabs together with testing in our NATA accredited laboratory and leading Australian universities has paid off with an optimised product which provides significant cost savings for projects LYSAGHT W DEK has exceptional spanning characteristics and spans up to 4 1 metres reducing the need for supporting structures The built in properties of high tensile steel are maximised in the design and fabrication of the deck profiles which result in products with high strength to weight ratio LYSAGHT W DEK is currently the mos
21. onry walls glass doors No limits for slabs not supporting brittle partitions 5 5 Crack Control for Flexure l Crack control For Required C Not required flexure rf Not required option may be used for areas of slabs fully enclosed within a building except for a brief period of weather exposure during construction and where it is assessed that wider cracks can be tolerated according to AS3600 2001 Clause 9 4 1 This option will design reinforcement as required for relaxed crack control Items 9 i and iii of Clause 9 4 1 5 6 Degree of Control of Shrinkage and Temperature Effects Degree of control for shrinkage Crack control for oi Refer to AS3600 2001 Clause 9 4 3 for shrinkage control requirements Crack control for Required C Not required Ll 10 LYSAGHT W DEK Design Software User Guide Figure 10 Composite slab deflection limits Figure 11 Crack control for flexure Figure 12 Shrinkage control Figure 13 Environment for shrinkage strains 2010 lt DD gt It shall be noted that arid interior environment will result in higher shrinkage strains which in turn may result in deeper slabs 5 7 Properties of Materials Properties of Materials Figure 14 Concrete strength Fc MPa Concrete grades Bar reinforcement grade negative positive fire The minimum Concrete grade possible depends on Exposure Classification B2 classification will require
22. port Sample Pages LYSAGHT W DEK Job Name Lysaght Typical INPUT PARAMETERS Type of building Steel frames Span configuration End Spans Continuous spans Three spans Ratio of shorter to longer spans up to 1 2 Slab thickness De mm 165 Density of concrete rg kg m3 2400 Concrete grade 32MPa Concrete slab span centre to centre L mm 3100 Exposure classification Al AS 3600 2001 Table 4 3 Reinforcement negative positive fire grade D500N AS 36000 2001 Table 6 2 1 Reinforcing positive fire bar diameter mm 12 mm 12 Reinforcing negative bar diameter Deflection limits of composite slabs Total lt L 250 AS 3600 2001 Table 2 4 2 Degree of control for shrinkage and temperature effects Moderate Shrinkage mesh grade D500N AS 3600 2001 Table 6 2 1 Mesh or transverse bar diameter N12 Mesh longitudinal bar diameter if D500N on N12 Mesh longitudinal bar spacing if D500N P 300 Concrete cover mm 20 AS 3600 2001 Table 4 10 3 2 Slab acting compositely with steel beams or N used as diaphragm es Environment for shrinkage strains rid interior Three or more spans Formwork sheets continue over number of spans Visual quality not important Formwork deflection limit AS 2327 1 2003 Clause C2 Lysaght W base metal thickness t mm 0 75 Permanent support width mm 100 Superimposed dead load Gsup kPa Live Load Q kPa 4 Load factor Y s 0 7 Load factor Y 0 4 Construction loads due to M kPa to weight of s
23. reinforcement bar size e Increasing slab deflection limit to L 250 All input parameters shall be checked if adequate Microsoft Excel Slab thickness shall be within 130mm to 250mm This means that slab thickness entered Is not correct 250 mm is considered as the maximum practical slab thickness Contact Steel Direct if you still want to design deeper slabs Microsolt Excel Microsoft Excel Positive and Fire bar size has not been entered Tensile amp compression reinforcement bar size have not been entered Self explanatory 22 LYSAGHT W DEK Design Software User Guide 2010 Microsolt Excel Microsolt Excel Fire reinforcement bar size has not been entered Self explanatory Microsolt Excel Specify correct number of spans for continuous slabs That message may appear when the user designs first continuous span as an end double span and then tries to design interior span as double span The interior span shall be specified for continuous slabs with three or more spans LYSAGHT W DEK Design Software User Guide w 1 kPa stacked materials Load shall be clearly specified on formwork documentation Continue The user may chose Yes and continue with the design However 1 kPa load shall be clearly specified on design documentation and controlled on a construction site Hicrosoft Excel The transverse bar size has not been entered Self explanatory 2010 23 10 Re
24. t Dialogue Box 5 1 General Input dialogue box is designed for quick and easy data entry The user shall normally just choose one of available options If required input information is missed or incorrect the warning message would appear on the screen 5 2 Conditions of Exposure The Exposure Classification shall be specified as required by AS3600 2001 Clause 4 3 5 3 Spans The user may specify Single Spans or Continuous Spans depending on the project Increased slab thickness may be required in many instances when continuous slabs are designed as a series of simply supported spans If the span is a Continuous one the user may run the software several times for End Spans and Interior Spans separately If the continuous span Is a Two spans then there is no option for Interior Spans both spans are end ones It shall be noted that Continuous Spans refer here to composite concrete slabs only LYSAGHT W DEK formwork spans are specified in Design and Design Check dialogue boxes End Spans and Interior Spans may be designed with a different thickness to get the most economical design However The first Interior Span from the end support shall always have the same thickness as the End Span g LYSAGHT W DEK Design Software User Guide Figure 4 Exposure classification Figure 5 Spans Figure 6 Continuous Spans lt DD gt 2010 When the slab has less than five spans the user shall run End Spans first using Des
25. t economical structural steel decking in Australia for typical applications because it provides widest cover per weight of steel The profiled ribs are 78mm in height resulting in LYSAGHT W DEK having excellent concrete displacement characteristics and minimal propping requirements This speeds up installation and makes the costs of delivery erection and structural framing significantly lower than for other systems Scope This manual provides information on the design of formwork propping composite slabs and design for fire and some information for composite beams This manual is developed to the latest versions of the relevant Australian Standards and Eurocodes Conditions of use This publication contains technical information on the following grades of LYSAGHT W DEK e LYSAGHT W DEK 0 75 mm thickness e LYSAGHT W DEK 1 00 mm thickness Additionally LYSAGHT W DEK software allows you to get quicker and more economical solutions with a range of options Call Steel Direct on 1800 641 417 to obtain additional copies of the Design Manual and Software Where we recommend use of third party materials ensure you check the manufacturer s requirements Diagrams are used to explain the requirements of a particular product Adjacent construction elements of the building that would normally be required in that particular situation are not always shown Accordingly aspects of a diagram not shown should not be interpreted as meaning thes
26. tacked materials AS 3610 1995 Clause 4 4 FRL min 120 min Building Codes of Australia Fire resistance level Load factor for imposed loads during fire Fire Detail 24 LYSAGHT W DEK Design Software User Guide 2010 Number of temporary props PROPERTIES OF LYSAGHT W Moment capacity in positive bending Moment capacity in negative bending used in partial plastic analysis Shear web crippling capacity Effective Second Moment of Area for serviceability calcs Yield stress Young s modulus of elasticity DESIGN LOADS Self weight of sheeting Self weight of concrete and reinforcement Concentrated Live Load Concentrated Live Load UDL equivalent Load from stacked materials Live Load Concentrated point load Self weight of reinforcement LOAD COMBINATIONS Strength Stage before placing concrete Stage 2 after placing concrete Serviceability DESIGN FOR STRENGTH Maximum positive bending moment Maximum shear force Combined bending and shear DESIGN FOR SERVICEABILITY Deflections Deflection limits Formwork design fM fM fV leff ser AS NZS 4600 1996 Section 6 fy AS NZS 4600 1996 Table 1 5 AS NZS 4600 1996 Table 1 4 Gsh Gc Qe Qc equiv M Quv AS 3610 1995 Clause 4 4 p Qr AS 2327 1 2003 Clause F2 Fda 1 25 G sh 5 Quv 5Q M Fdlb 1 25 G sh 1 5 Qr Qp F dila F dilb 1 25 G sh 1 25G c 1 5 Q uv 1 25 G sh 1 25G ctQc Fdef Gsh Gc
27. uide and Design and Construction Manual in pdf format On your hard disc create a directory folder called LYSAGHT W DEK design software and place the files from CD into the folder Run the software in the usual way by double clicking on the icons Microcolt Excel Macros may contain viruses It is always safe bo disable macros but if the macros aro legitimate you might lose some functionality Ensure you enable Macros before proceeding with LYSAGHT W DEK design software The security settings for Excel shall be set to medium level when applicable LYSAGHT W DEK Design Software User Guide 2010 5 3 Software Flowchart for the Design of Continuous Spans Specify parameters in Input dialogue box for End Span Slab thickness known Specify parameters in Design dialogue box and click Design The design output is satisfactory passed and economical YES Less than five spans YES Repeat above procedure for one Interior Span with thicknesses required for End Span using Design Check dialogue box 6 LYSAGHT W DEK Design Software User Guide YES Specify parameters in Design Check dialogue box and click Design Check The design output is satisfactory passed and economical YES Repeat above procedure for one Interior Span Equal Spans or several Interior Spans Repeat above procedure for Interior Spans using either of these two options the same thickness as for End
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