Structural Modelling using Etabs 2018

Aim: To model and to analyse G+3 building with relevant seismic inputs based on the given data, using ETABS software. Also for the resultant column reactions, Deep foundations have to be designed with Piles and pilecap using SAFE software. Also Typical floor structural plan, Column rebar, Beam rebar, Pilecap rebar and…

QUESTION-1 Introduction: As per the isolated footing in week-11 challenge, model in safe, analysis and design of the foundation and to arrive the steel reinforcement.   Procedure: Create new model>input the metric units > is code usage IS 456-200 Step:1   Step:2   In the window for default, Select…

Introduction:             The aim of this challenge is to manually calculate the shallow foundation reinforcement details with respect to the limit state of design.   Calculation of Total soil pressure / Gross soil pressure: Total Load(unfactored)=2000/1.5=1333kN…

AIM: To conceptualize a framing plan layout and then model the building in Etabs. To design the structural model in compliance with provisions of IS 1893 and IS 13920. To run a modal response spectrum analysis and check analysis results of the etabs model for inter-storey drift requirements, vertical & planar…

AIM: In the etabs file for a G+6 building that is provided. Run the analysis and design the RCC shear wall of size 300x1500 at grid A-11 in the structural model. Extract values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the design results. Provide cross sectional steel arrangement…

AIM: To run the analysis and design the RCC Moment Resisting Frame for the ETABS file for a G+4 building that is provided. Provide details of longitudinal reinforcement for the two columns, from foundation to terrace level. Sketch the column cross sectional & elevation details or draft it using autocad software. …

AIM: To provide detail design of beams in Etabs. To provide reasons for failure of the middle span along grid A and provide solutions. To calculate value of the maximum shear force in any one of the spans in both the continuous beams, as per clause 6.3.3 (b) in IS 13920 – 2016.   Detailing Rule for any RC member:…

AIM: To find factors influencing the dynamic characteristics of the buildings To find factors influencing the Natural Period of a building. To find factors influencing the Mode shape of oscillations   PROCEDURE: BUILDING A: STEP 1: Open the Etabs software. In the Start page select New model option. In the dialogue…

AIM: To model a 25 storey building on ETABS with structural properties as specified. To check the translational fundamental natural period of vibration in both the x and y direction. To check if the following provision in Table 5 of IS 1893 (part 1) – 2016, on torsional irregularity satisfied. To check if the two…

1) Restraints of floor shrinkage:   Observations: Option a) Full restraints are present in all corners equally split in both X and Y directions. Option b) Restraints are provided along the centre of edges in both directions and the corners are left free. Option c) The restraints provided are non-uniform. In the Y…

1) i) Symmetry: The given plan is symmetrical in both the X and Y directions. This is concluded by splitting the plan by exactly two halves across both the directions and checking if bot halves mirror each other.   ii) Redundancy: The structure is more redundant in X and less redundant in Y direction. The columns…

1) Mass matrix (M)= [[m,0,0,0,0],[0,m,0,0,0],[0,0,m,0],[0,0,0,m]] Modified mass matrix (M) = phi_n^t*m*phi_n For the first mode (n=1) = [0.334,0.641,0.895,0.1078,1.173]*m*[[0.334],[0.641],[0.895],[0.1078],[1.173]] M1= 3.861m Similiarly for other modes, M2= 3.861m M3= 3.861m M4= 3.861m M5= 3.861m   Modal property (L)…

1) Assume L=2h; EIb=EIc; Case 1; Unit displacement u1=1 Stiffness coefficient off column translation (2 similiar) = 2*12EI/h^3 Stiffness coefficient of beam rotation (2 ends) = EI/h^2 Case 2; Unit rotation u2=1 Stiffness coefficient of column at right end = 6EI/h^2 Stiffness coefficient of column + beam rotation at left…

1. a) Observations: The concrete is crushed and the reinforcement of the beam is exposed. There are signs of rupture with the concrete in the beam spalled beyond the reinforcement. There are no severe or visible damages to the top of the beam due to flange advantage from the slab. The rebar yielding occurs in the support…

1) AIM: To export the Architecture/ Structure Project file developed in Week 6 to 8 to Navisworks Cache file.   PROCEDURE: STEP 1: Open the Architectural model of Project 2 from File-> Open-> Project. Open the 3D view of the Architectural model from Project browser. STEP 2: Go to File-> Export-> NWC to…

1) AIM:  To create a set of sinusoidal points and create a curve and create a surface out of the curve using Dynamo.   PROCEDURE: STEP 1: Open Revit-> Manage tab-> Dynamo. Open a New file in Dynamo. In the search library search and add Integer sliders. STEP 2: Set the value for Start point, Step and…

1) AIM: To use the shortcut keys in Revit discussed in class to complete the following tasks:           a. Using 3D model create a section box           b. To create similar doors and windows in a floor plan layout           c. To…

1) HVAC stands for heating, ventilation, and air conditioning. This system provides heating and cooling to residential and commercial buildings.  It is a technology which uses fresh air from outdoors to provide improved indoor air quality, this results in enhanced comfort and productivity. This provides a better…

1) The Type of structure that has been chosen is b. Office building.   2) The assumed location is Chennai, Tamil Nadu. The Type of Structure selected is Type 2. Modelling Requirements as per NBC for office building: Open spaces around the building should not be less than 4.5m. The width of road abutting the building…

1) AIM: To use the Manage tab set project base point and project shared coordinates for the project in Architectural template. PROCEDURE: STEP 1: Open a New Architectural template in Revit from File-> New. Create two grids and name them from Datum panel in Architecture Tab. STEP 2: To specify coordinates at the…

1)Reasons why building codes and standars are essential for the modelling in Revit are:They are a set of standards uniform to all structures.It helps avoid cost iverrun.It helps manage time and cost of project efficiently.It provides standard safety precautions eliminating threats.Designing a building must adhere to the…

1) AIM: To model a Ceiling from the architecture tab above the walls at the first-floor level on the model saved from week 3. PROCEDURE: In Revit select File-> Open-> Project and open the project saved from week 3. To model the ceiling on the first floor select Ceiling Plans-> First floor. In the Architecture…

1) AIM: To create a floor and align it with the grids creaated in week 2. To use appropriate material and thickness from the property browser for the created floor. PROCEDURE: In Revit open the model created and saved in Week 2 from File->Open->Project. Set the current view to Floor plan of Level 1. To create the…

1) Building Information Modeling (BIM): It is the holistic process of creating and managing information for a built asset. Based on an intelligent model and enabled by a cloud platform, BIM integrates structured, multi-disciplinary data to produce a digital representation of an asset across its lifecycle, from planning…

1)            2)     3) A wall of required dimensions is created by selecting Wall option from the Architecture panel. 4) The created wall is then dimensioned using Aligned dimension option from the Annotate panel.   5) The type of wall is changed from the Properies Browser…

1) AIM: To create a 3D model of a residential building with a rendered view.   INTRODUCTION: The Architectural drawings of the required building are drawn in 2D. Using the drawings as reference the 3D model is then developed using the 3D modelling workspace in AutoCAD. It is then rendered as required.   PROCEDURE:…

1) AIM: To create a 3D Isometric View of the building with plan and elevation given. PROCEDURE: AutoCAD is opened with Imperial setting as default. In units of measurement Engineering is selected. Precision is set to 0'-0.0". Top view is selected in VIEW cube and plan is created with RECTANGULAR, TRIM, and OFFSET commands…

1) AIM: To create a 3D Furniture element as shown in the Figure. Assume dimensions which are missing. PROCEDURE: Using Worskspace switching icon 3D Basics workspace is set. Using LINE tool the outline is formed. Inside the outline a rectangle is created using RECTANGULAR command. Using BOUNDARY a surface is created within…

1) AIM: To create a layout of the Plan and Section A of the project in Challenges 7, using the template Tutorial-mArch.dwt in a scale as given in the Figure. To use the MV command to create the viewport of the size as shown in Figure. To use ATTEDIT command to edit the information in the title block. Use A1 size for the…

1) AIM: To create Kitchen layout the given kitchen layout. PROCEDURE: STEP 1: The Default setting is et to Metric system. Units are given as Decimal and precision is set to 0.0. STEP 2 : Layer Properties manager is opened from Layer panel and required layers are created. STEP 3: The commands used for creating the Walls,…

1) AIM: To create the templates as shown in Figures.  After creating the title block it must be saved as a block with names: Custom1_titleblock and Custom2_titleblock, respectively.   PROCEDURE: The Tables are drawn using LINE and OFFSET commands. The text is given using DTEXT command. It is editted using…

AIM: To create an architectural drawing (Floor plans, Elevations, and sections) for the given plot size with relevant structural drawings.   INTRODUCTION: The Architectural drawing is done using AutoCAD software and its various tools. The instructions and details provided are: Plot size: 60' x 20' Facing East PROCEDURE:…

Aim: To create a Layout, Section and Elevation with dimensions using AutoCad.   Procedure: 1st, 2nd and 3rd floor plan: Units are set to mm. Limits and Limmax are set. Using XLINE command horizaontal and vertical construction lines are drawn. Using OFFSET command and provided dimensions the walls, rooms, stairs and…

1) Aim: To draw the elevation and details of a wardrobe as shown in the figure and provide dimensions and text with use of layers, proper text styles and dimension methods. Procedure: Front elevation: Units are set to mm. Limits and Lim max are also set using The outlines of the drawings are drawn using RECTANGULAR command…

1) Aim: To create a Column schedule with the help of lines and Text using DTEXT command or Single line text.   Procedure: The table is created using RECTANGULAR command and LINE command. The text is inserted in the required rows and columns using DTEXT command and Single line text as directed with 8" height. The font…

1) Aim: To sketch the layout of a residence as shown in the Figure 1. Considering all dimensions as reference to sketch the unit plan and assuming the missing dimensions.  Procedure: A construction line is drawn in the X and Y axis using XLINE command. Using OFFSET tool the walls are then offseted from the original…

Aim : To draw the given Geometries as per given dimensions using tools and commands learned in AutoCAD software. Drawing 1: Procedure: Decimal unit of measurement is chosen as per instructions. The outline is first drawn using PLINE command and Direct entry method. For the angles in the outline the Relative polar coordinate…

Aim:  To create the given drawings using various functions in AutoCAD and provide the detailed procedure for each drawing.   C1: Procedure: Using RECTANGULAR command and end point the first rectangle is drawn. Using RECTANGULAR command and dimensions the other rectangles are drawn. They are then moved using MOVE…

Aim: To create the geometries from P1 to P2 using all the coordinates system methods using the Line tool to create the geometries. Imperial template and decimal units must be used for drafting.   Introduction: The coordinate systems methods are : Absolute coordinate system. Relative coordinate system - Relative rectangular…

Aim : To sketch a G+1 Residential plan according to vaastu sastra, and list the structural drawing required to be provided to the site for construction. Also, assume the sizes of the structural elements (Column, Beam, Slab, etc.,) and accordingly calculate the individual corresponding loads from the members as per IS code.…

 Concrete Mix Design for M35 grade concrete with fly ash: Grade designation: M35 Type of cement: OPC 43 grade conforming to IS 8112 Type of mineral admixture: fly ash conforming to IS 3812 (part 1) Maximum nominal size of aggregate: 20mm Minimum cement content: 320 Kg/m^3 (From Table 5 of IS 456:2000)…