ETABS Advanced Course Modeling&Design of19 stories Buildings

Learn to start a new etabs project, create a 19-story model from the new model form, explore template options, set metric units and aci 318-19, and save the project.

Define concrete C30 with fc' 30 MPa and modulus by 4700 sqrt(fc'), then create main rebar T400 (400 MPa) and tie rebar H240 (240 MPa) in ETABS.

Define section properties for columns, beams, slabs, and walls in ETABS, set dimensions and materials (C30), apply rebar (T400, H240), and adjust inertia modifiers (0.7, 0.35, 0.25) to model cracks.

Prepare a DXF in AutoCAD for ETABS by creating layers (E_Grids, E_Columns, E_Walls, E_Slabs, E_Opinings), drawing elements on center lines, and purging before export.

Import the DXF file in ETABS to define architectural grids and plan layers in meters, display columns and walls, and assign RC sections before a quick model check.

Define load patterns for dead, live, self-weight, and super dead, then set seismic and wind loads with UBC 97, including eccentricity, time period, soil type, and zone factor.

Define the mass source in ETABS by selecting specified load patterns to combine self-weight and loads; set dead and s-d multipliers to 1, add live load 0.25, uncheck vertical mass.

Define load combinations in ETABS by adding new combos with dead, S-D, and live load factors set to 1, and automatically generate ACI code-compliant options.

Learn to assign loads in an ETABS model for a 19-story building, including live, covering, and walls loads, apply to slab F30, replicate across stories, and set base restraints.

Explore automatic meshing in ETABS by dividing slabs and walls into small rectangles with auto mesh options, setting maximum mesh size, and viewing shell and frame meshes.

Define eight pier labels and assign them to four shear walls in ETABS, so walls act like columns, carrying normal forces and moments across all stories.

Assign frame sections in ETABS by defining master and similar stories, then apply RC column and wall sections across stories, keeping core thickness consistent.

Define and assign floor diaphragms in ETABS to constrain corner points, model earthquake loads through floor slabs as deep beams, and run analysis to obtain center of rigidity.

Explain the P-Delta effect in high-rise modeling, linking axial load P, lateral forces and displacement Delta to overturning moments, with ACI code checks (theta < 0.1, Cd=4) in ETABS.

Evaluate whether to include the P-Delta effect in ETABS by checking theta values via an Excel sheet, then demonstrate enabling P-Delta options and running analysis for all load patterns.

Explore eccentricity in a 19-story ETABS model by comparing the center of mass and center of rigidity, verifying EX/DX and EY/DY stay under 15%, and adjusting shear walls if needed.

Explores plan and vertical irregularities, explains soft story and heavy story criteria, and demonstrates stiffness and mass checks in ETABS and Excel to assess regularity.

Assess torsional irregularity in a 19-story ETABS model by computing max and average drifts, determining the torsional irregularity coefficient, and updating accidental eccentricity with ETABS and a spreadsheet.

Master evaluating story drift, drift ratio, and total displacement in a 19-story Etabs model using ubc guidelines, scaling ultimate results by 0.7, and verifying results against allowable values.

Learn how modal analysis in etabs models dynamic seismic response, define modal cases, ensure 90% modal participating mass ratio, and prepare for response spectrum and time history analyses.

Define the response spectrum in ETABS using UBC 97 with CA 0.24 and CV 0.32, apply 5% damping, and configure Spec X/Y load cases and dynamic load combinations.

Calibrate spectrum factor by comparing base shear in x and y, then multiply the x factor by 1.465 and the y factor by 1.9 to meet 0.85 percent requirement.

Assess torsional irregularity and story drift by checking diaphragm max/avg drift for both directions, then copy results to the torsion irregularities sheet and apply the maximum accidental eccentricity.