INTRO, LIMITATIONS & SPECS

 

Composite Floor Design is as per Euro 4 & IS 800 : 2007.
Box Column is not composite & is designed as per  IS 800 : 2007.
 
Composite floor using profiled sheet decking consists of steel beams, steel deck, shear connectors, steel mesh and cast in-situ concrete in such a manner that they would act monolithically. Composite floor comprises profiled steel decking as the permanent formwork to the underside of concrete floor spanning between support beams. The decking acts compositely with the concrete slab. It also supports the loads applied to it before the concrete has gained adequate strength (during construction stage). A steel mesh is placed in the concrete floor to avoid effect of cracks and shrinkage.
Read all Beam to Beam, Beam to Column Shear Connection design with reference to standard details given in the software.
The software performs Analysis, Design, Estimation & Costing of Composite Steel Floors and Columns. Floor Plan shall be at a given Uniform Level (2D). Multiple Level Floors (3D) cannot be analyzed.
All Steel Columns shall be Box type i.e. 2MC Toe to Toe OR 2 MB Toe to Toe Welded without any Gap.
The Software basically requires a User to enter floor data for Joints, Columns, Beams, Concrete Slab + Deck profile & Point load. All beams are Simple Supported. The rest of the things are taken care of by the software.

The results are displayed in the form of BM & SF, Beam Design Details, Quantities, Cost & Column Loads.

Graphics option are available for display and tabular Format is available for Editing and Deleting Data.

A User should Delete / Edit Input-Data through the various Program Options only. If any editing is done outside the design environment than Data files may become corrupted. All Data should be Strictly "Entered" as explained in following steps.

Extensive Printing options are available under each display. Printing is straight forward with default set of values ( Arial Font, 8 mm Thick, Bold, Portrait ).

The best way to go about the software is to Mark on the Floor Plan, Joint, Beam, Column and Slab Numbers. A Joint represents a Column location or an intersection between 2 Beams. The Beams are represented by its location in the form of Right Hand Side (RHS) & Left Hand Side (LHS) Joint numbers. The Slabs are represented by LEFT BOTTOM & RIGHT TOP joint numbers. All Joints will have X & Y Co-Ordinates, Top Left corner is taken as origin (0, 0). Joint / Beam / Column / Slab numbers should start with " 1 " and should not be repeated.

The Program will generate automatic Joint, Beam, Column & Slab Numbers from the information given in Project File. Some of these Numbers / Members may not be required & shall be deleted in a systematic manner as explained in the following chapters. The Final Plan Graphics should look exactly as the Floor Plan.
Cantilever beams cannot be analyzed.
Only Vertical Loads & Axial loads on Beams are Envisaged.
Lateral Loads & End BMs are on Beams are not Permitted.
 
Beams / Columns / Slabs shall be along two mutually perpendicular axis 
(Z and Y). Polygonal (Multi-sided) Floors cannot be analyzed.
Only Dead + Live Load Case is analyzed by the software.

It is assumed that structure is braced and lateral forces are resisted by only Braced Frame. A Frame which is braced as well as  non sway will be preferred for composite construction. Non Braced elements are designed only for DL + LL. 
Refer the following Euro 4 Code (EC4) explanation.
 
Intersecting Joints between two Beams (Main & Secondary) is assumed as Hinged. Hence no Moment transfer is envisaged.
Connection between End Column and Beam is considered as Hinged. Hence no Moment transfer is envisaged between Column and Beam. 
After data input, the user has to switch over to graphic option for visual checking of joints / columns / beams / slab nos. When the data is error free the user can  run the Analysis, Design and Quantity options. The various results are also available through display or print options.
Analysis, Design and Quantity options should be run in strict order, else program will give unexpected results.
Program creates automatic Joint numbers as per nos. of Horizontal & Vertical Grids. Here Grids means Beams coming along Column center lines  as well as all  Internal Beams not aligned with columns. A user has to input Information regarding Horizontal & Vertical Grids while creating Project File.
A user can delete the Joints not required by using Joint Option.
Joints will be automatically re-numbered when "UPDATE" button is clicked or at "EXIT".
Remember to Delete / Edit Corresponding Beam / Column / Slab Member, whose Joint has been deleted.
Always delete Beam / Column / Slab member from the "END" to facilitate further Editing. After Deleting press "UPDATE" button for re-numbering of members.
After Deleting corresponding Beam / Column / Slab Member & Updating, edit the required Joint Numbers of affected Beam / Column / Slab Members.
Go through the "READ ME" Button for better understanding of that particular Option.
Only 2 Types of Beam are Possible.
(a) MC
(b) MB
Only Two Types of Columns are Possible.
(a) MC welded Toe to Toe (T / T)
(b) MB welded Toe to Toe (T / T)

                       

Following Sections are Possible for Beams & Columns.

(a) ISMC Section: ISMC 100, 125, 150, 200, 250, 300, 350 & 400.

(B) ISMB Section: ISMB 100, 150, 200, 250, 300, 350, 400, 450, 500, 550 & 600.
 
End Reactions are obtained by running 2-D or 3-D Portal Frame Analysis programs separately. User may use our 2-D Frame Analysis software for calculation of End Reactions of Braced Frames.
 
   
IMPORTANT INFO / SPECS
  
1. Designer to Select Deck Profile as per Allowable total Loading Intensity
     corresponding to Maximum span of Deck, from the Load Table provided by
     Deck  Manufacturer. The Deck deflection shall not exceed Span / 180 or 20 MM
     whichever is less. The Minimum Yield stress of DECK shall not be less than that
     of Structural Steel.

2. The Composite floor design is based on the assumption that all beams are
     simply supported. There is no Hogging bending moment due to DL + LL or Wind
     or Seismic.

3. The Complete System shall be Braced with Shear Wall or with Crossed Braced 
     Frames, resisting all lateral Forces.

4. It is Preferred to Design all Braced Frames as Non-Sway Frames, 
    refer IS 800 : 2007.

5. Select the Deck Span requiring no Props.

6. Restrict thickness of Galvanized Deck profile to 1.25 - 1.50 MM.

7. Diameter of automatically welded Studs are restricted to 19 MM.

8. Depth of Deck Profile > 85 & < 35 MM not Permitted.

9. Decking Sheets shall be attached to each other & to all permanent supports 
    using screws or shot fired nails.

10. Thickness of Concrete above Rib < 55 MM not Permitted. 
       Fire Rating of 2 Hours.

11. Deck Width (br) < 50 MM not Permitted.

12. Minimum Clear Cover to Stud from Concrete Top = 20 MM.

13. Deck Sheeting Longitudinal over lap = 150 ~ 300 MM & Min. 
       Side Over lap = 30 MM as per Manufacturer's Specs.
  
14. Min. Bearing of Deck Profile on Steel = 50 MM.

15. Aggregate Size not > than 0.4 * Conc. thickness above Rib.

16. Attach minimum of one Stud to every decking trough.

17. However 2 Studs can be attached if required by design.

18. Stud Transverse Spacing not > 4 .

19. Stud Longitudinal Spacing > 5 .

20. If Frequency of Vibration of Beams < 4 Cycles/Sec, 
       Designer to change Section.

21. Height of Stud > 4 * of Stud for Ductile classification.

22. Head  of Stud = 1.5  * of Stud.

23. Minimum Yield Strength Fy for Deck Profile Shall  be 250 N/MM2

24. Clear Cover to Stud from Top shall be 20 MM.
 
25. Clear Cover to Mesh Reinforcement from Top shall be 30 MM.
   

Export to Excel :

When the " Analysis Result -> Bending Moment & Reaction " option is Run, a Text file is automatically created. This File will open in Any Text Editor. You can also Open this Text File in EXCEL.
Start Excel -> File -> Open -> Delimited ->Next : Delimiters -> Comma ->Next -> Finish.
Now you will notice that Complete Data is displayed in Excel Spread Sheet.
If more than One File is Created, Corresponding to Each of Load Cases, than Open Excel Sheet for Each File (Load Case). In Excel Sheet Editing, Deleting, Sorting, Printing & Merging of Data/Files/Excel Sheets is Extremely Easy. This way any no. of Load Cases can be Manipulated.

Similar Text files are created in " Shear Corrected BM & SF " (Design BM & SF)  &
" Column Loads " option for Exporting Results to Excel Spread Sheet & its subsequent Manipulation.
  
Minimum Computer RAM memory of 2 GB is recommended.
Use Laser OR Ink Jet Printer.