Building Plan Grid system and storey Data Definitions will be displayed after selecting ‘No’ button. Set the grid line and spacing between two grid lines. Set the storey height data using Edit storey Data command. Note: You can change Grid spacing by choosing Custom Grid spacing, for column varying spacing then click Edit Grid you can also change any storey height by choosing Custom Storey Data, then click on Edit Storey Data. Go to Main menu Edit Storey data Edit Storey. STEP 3: (Define Material Properties) From Main menu Define Material Property Add new material Material Name =M30 Concrete cubic comp. strength fck =30 Bending Reinforcement yield strength fy =415 Shear Reinforcement yield strength fy =415 Ok Ok. STEP 4: (Define Frame section) Define Column: From Main menu Define Frame section Add rectangular Material name =M30 (select) section Name =C600x300M30 Dimensions : Depth (3) = 600mm Width (2) =300mm Bar size =25 d Corner bar =25 d Reinforcement to be designed Ok Ok. Define Beam: From Main menu Define Frame section Add rectangular Material name =M30 (select) Section Name=B230x700M30 Dimensions: Depth (3) =700mm Width (2) =300mm Select Beam Define Slab: From Main menu define Wall/Slab /Deck section Add New slab Section name = S1 Material name = M30. Membrane Membrane =125 mm Bending =125mm Select Membrane Ok Ok. STEP 5: (Drawing Columns, Beams, and Slabs) Drawing Columns: From Main menu Draw Draw line objects Create column in region Property = C600x300M30 Select or Click on the column joints in Plan view (Left window) with ‘similar storey’ option. If necessary change angle =90 Change Property corresponding to column designation and click on respective column joints Close. Drawing Slab: From Main menu Draw Draw area objects Create areas at click (Draw areas) (Plan) Property =S1 Click on the periphery of column joints and press enter (With similar storey option). STEP 6:(Assigning Support Condition) Set Base floor Plan view in left window Set Column points (with mouse) From Main menu Assign Joint/Point Restraints (supports) Select Fixed Ok. To view Support assigned From top Tool bar Set Building view option Visible in view Supports Ok. Go to Elevation view 1 and view . For other views click arrow at top of tool bar. STEP 7: (Defining Loads) 1.Gravity Loads (Dead Load & Live Load) From Main menu Define Static Load Cases Load = SIDL (Super Imposed Dead Load) Type = Dead Self weight multiplier =0 Add New Load Ok. Load = Wall Type= Dead Self weight multiplier =0 Add New Load Ok. Note: For Self weight multiplier will be 1 for beams and columns of dead load. For all other loads, it will be zero. Assigning the Loads: Activate left window and set to Plan view Activate or select similar storey option (at bottom) and select all slabs From Main menu Assign Shell / Area loads Uniform Load case name =SIDL Uniform load Load = 1.50 Kn/m2 (units Kn.m) Direction Gravity Ok. In the same manner assign Load case name = Live Uniform load Load = 2.0 Kn/m2 (units Kn.m) Direction : Gravity Ok. Assigning Wall loads: 9” wall load = 11.176Kn/m (First to fourth floor) Ground floor =14.224Kn/m. Terrace floor=4.508Kn/m. In left side window select the beams in first to fourth floor by setting similar storey options and view the status bar to know no. of beams selected From Main menu Assign Frame /Line loads Distributed Load case name = wall. Unit Kn.m Forces Direction Gravity Uniform load=11.176 Kn/m Replace existing loads Ok. In the same manner apply Ground floor and terrace floor wall loads by setting “single storey option” and assign the wall loads. To see the load assigned : Right click the particular member corresponding load Ok. Note: For point load : From Main menu Assign Joint/Point loads Load case name =Dead. Units Kn.m. Replace existing loads Forces Global =10 Kn Ok. 2. Wind Loads : In ETABS there are two ways to define lateral loads (Wind, earth quake). Built in option will automatically calculate lateral loads as per available design codes. Define wind load parameters as per IS 875 --Part 3 (1987) From Main menu Define Static Load cases Load = X or Y Type = Wind Self weight multiplier =0 Auto Lateral load =IS 875—1987 Add New Load Select wind X load and click on modify lateral loads to specify required wind load parameter. As per IS 875 Ok Ok. Creating dummy areas with property =None Set required elevation view in right window From Main menu Draw Draw area objects Draw rectangular areas Property = None Click on the perimeter of area and press enter. Foot Note: Apply wind load for selections. To select wind area Main menu Select By area object type select none Ok. Assigning wind loads Select drawing area of required elevation From Main menu Assign Shell/area loads Wind Pressure coefficients Wind load case name =Wind X Coefficient Cp= - (Change if required) Ok. To see wind load selection Set Building view option Area section Line section Ok. 3.Earthquake Analysis In building, slab is considered as single rigid member during earthquake analysis. Select left side window. Select all slabs by setting all floors/ similar storey option From Main menu Define Diaphragms Select D1 Modify/ Show diaphragms Select Rigid Ok Ok. Define Mass Source As per IS 1893-->2002 25% of Live load is considered on all floors of building. From Main menu Define Mass source select From Loads Load =Dead; Multiplier -->1.0 Add Load = Live; Multiplier =0.25 Add Load =SIDL; Multiplier =1.0 Add Load = Wall; Multiplier =1.0 Add Ok. Define Earthquake Load (Static Method) From Main menu Define Static Load cases Load =EQX Type = Quake Default Multiplier =0 Auto Lateral load = IS 1893—2002 Add New Load Select the load EQX Modify lateral load If required change values as per IS 1893 Select X Direction Select Program calc per code =0.36 (change as per requirement) Ok Ok. Assigning Diaphragms Set all storey option and select all slabs From Main menu Assign Shell area Diaphragms D1 Ok. To view the Diaphragm Go to Set Building View objects Diaphragm