|INTRO & LIMITATIONS|
performs Analysis, Design, Estimation & Costing of A RCC Flat Slab at a given
(2D). Multiple Level Floors (3D) cannot be analyzed.
Building Plan shall be square / rectangular in shape. Flat Slab also designs building Columns (under Bi-Axial Moment) and Isolated Footings (Under Uni-Axial Load) when Column Project file is created by the user. Column & Footing quantities & costs are added to floor costs to arrive at complete building cost.
The Software basically requires a User to enter floor data for Joints, Columns, Beams, Slabs, Point loads & Continuity. The rest of the things are taken care of by the software.
The results are displayed in the form of BM & SF, Beam & Slab Schedule, Quantities, Cost, Bar bending Schedule for Beams & 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 ).
Only Beam Schedule will be Printed in Landscape Orientation.
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.
Beam marking in flat slab is different than the normal floor plan GA.
1: Mark the Hidden
Beams (Column Strips)
in the same way as you Mark the
2: Hidden Beam (Column Strip) depth shall = Flat Slab (Middle Strip) Thickness.
3: All Flat Slab (Middle Strips) thickness shall be uniform.
4: Initial (Trial) Flat
Slab Thickness =
5: Keep Column Size as
Large as Possible, Larger the Column size lesser
6: Minimum Column size allowed is 300 x 300 MM.
7: Try to Avoid secondary beams, i.e. hidden beams resting on one another.
8: Avoid concentrated loads, else flat slab thickness will be very high.
9: Convert wall line load
in to UDL as w ÷ (0.6 * slab_span). and avoid beam
10: Hence convert all internal partitions in to equivalent UDL & avoid beams.
11: Try to Keep Minimum spacing of beams at 2.0 M C/C.
12: In order to get most
optimum design keep the slab and beam spans
13: Spacing of columns
shall be as uniform as possible within say 20 % of each
14: Avoid Eccentricity of Walls vis a vis Hidden Beams and Columns.
15: One Way Shears are
calculated at effective depth from Column face and
are calculated at Column face.
17: Flat Slab depth to be revised, if steel area exceeds 182 cm2.
18: In Case of Un-safe
Hidden Beam design Reframe the Plan or Revise Slab
19: Flat Slab Design is
meant for Vertical Loads only, for Lateral Loads
20: For Analysis &
Design of Shear Wall refer our Super
Civil CD software.
Use any 2/3 D Frame Analysis Software or for Quick Results Use Our Own
24: Beam Loads can be taken as tributary or UDL for Frame Analysis.
25: Main Steel is to be placed in Longer Direction & not in Shorter Direction.
26: Convert Non
Rectangular Column into Equivalent Square Column
27: Min Reinforcement % in Either Direction = 0.20 %.
28: Reinforcement Spacing
Shall not Exceed 2 x Depth.
30: Use High Grade of Concrete Preferably M 30 or M 35.
31: At Ends and Corners
the Flat Slab shall Extend up to or beyond Outer Edge of
32: Large openings cannot be provided in Flat Slab.
33: Small openings say <= 300 MM can be located near the center of Slab.
34: Staircase panel shall
be treated as normal slab & not as opening,
|Cantilever beams cannot be analyzed.|
|Beams / Columns /
Slabs shall be along two mutually perpendicular axis
(X and Y). Polygonal (Multi-sided) slabs cannot be analyzed.
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.
In Excel Sheet Editing, Deleting, Sorting, Printing & Merging of Data/Files/Excel Sheets is Extremely Easy.
Similar Text files are created in " Shear Corrected BM & SF " (Design BM & SF),
" Beam Schedule ", " Slab Schedule " & " Column Loads " option for Exporting Results to Excel Spread Sheet & its subsequent Manipulation.
Export to PDF:
A free PDF Creator Program is available with this Software. Designer can directly export to PDF instead of printing various reports.
|Intersecting Joints between two Beams (Main & Secondary) is assumed as Hinged. Hence no Moment transfer is envisaged.|
|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.|
|For Durability aspect of Design, refer our " Super Civil CD " software.|
|Beam Bar bending codes and details are as per enclosed standard drawings.|
|Hidden Beam / Flat Slab Depth < 200 and > 600 MM not permitted.|
|Hidden Beam Width is calculated automatically by the Program.|
|Links (Stirrups) < 75 MM for Hidden Beams is not permitted.|
|Hidden Beam Reinforcement > 4 % not permitted.|
|Age factor is considered as 1.15.|
|All Columns are placed Centrally with respect to Beams in either direction. There is no provision to offset the column in either direction. If the offset is large than user should re-workout the Beam Span. Column design is fully automatic, Input from the User is not required. Column Size is governed by Initial size given by the user and allowable standard size and reinforcement %, Refer Step No. 5 and 16.|
|All Foundations are designed as Isolated Footings under Pure Compression. No moments are allowed in any direction. User should Analyze all Building frames considering Base as Hinged. Isolated Footing design is fully automatic, Input from the User is not required. Footing Size is governed by allowable bearing capacity (SBC) of soil and the initial size given by the user. Footing is optimized by having offset in either direction from column as equal, hence footing reinforcement in both direction is same. Overlapping footings should be corrected by changing the footing dimension, keeping the required base area constant OR by making Combine footing / Raft / Piles etc.|
|Minimum Computer RAM memory of 1 GB is recommended.|
|Use Laser OR Ink Jet Printer.|
1. BS - 8110 - 1997.
2. IS - 456- 2000 / 1978 / 1964.
3. SP 24 - 1983.
4. Advance Reinforced Concrete Design by P. C. Varghese.
5. Reinforced Concrete Designers Handbook by C. E. Reynolds.