Creating various 3D Models like Furniture, Footing, Girder, Column drop with panel and Gable Wall in AutoCad

Aim & Introduction

Aim

This challenge aims to let the student utilize the tools in Autocad to create a 3D sketch. It aims to help the student familiarize with thedifferent 3D commands present in the AutoCAD software. This challenge aims to correlate the 2D drawing into 3D sketches

Introduction

The AutoCAD software provides different tools. used in this challenge is as described below: Line- creates line object

Polyline- creates rectangle line object Rectangle- creates rectangles object Circle- create circle object

Trim-Cut unwanted lines or shapes with the provided cutting edges Extended- Extend lines to opposite corners

Move- Move objects to particular locations Copy- Copy obejects to particular locations

Rotate- Rotate selected objects to a particular angle with respect to base point Array- Copy an object in a set path linearly or polarly

Join- Joins separated line objects to a particular angle with respect to base point Dimlinear(DLI)- provides vertical or horizontal linear/ straight dimensions Dimligned(DAL)- Provides dimensions with respect to the angle of the object Dimangular(DAN)- Provides angular dimensions between two line objects.

Quicklinedimension(QDIM)-provides quick dimension of a geometry Leader- creates an arrow head line

Layer- Provides identification of line or object groups by their properties

Units- Open "Drawings Units" window to specify to modify the dimension properties Hatch- provides hatching pattern in a given object or internal point

3D orbit- allows panning in the 3D view

Extrude- Creates a 3D solid, surfaces, or 2D regions by subtraction UCS- Manages defined user corodinate systems

Union-Unions two solid or two region objects

2) Sketch and Procedure:

Create a 3D Furniture element as shown in the Assume dimensions which are missing

PROCEDURE:

Create 2D face

Results

Create the 3D model of an isolated footing as shown in figure

Procedure:

Extrude

Use top of solid as base. Top radius is 6"

Use Hidden view for final product

Create the 3D view of the AASTHO Girder

PROCEDURE:

Create 2D Drawing in front view

Stretch to expand

Trim line

Strech to achieve correct shape

Chamfer bottom part by 1"

Go to 3D view

Extrude by the correct length

Results

Create a 3D model of a drop column with panel as shown in section and isometric view

Procedure:

Create 2D drawing

Change object elevations

Change bottom shape to circle

Extrude the objects and use pyramid command on the trapezoidal part

Extrude top by 6" to the bottom

Top radius is 8" and height is 1'

Results:

Create the 3D model of a wall as shown in figure. Consider wall thickness as 9"

PROCEDURE:

Create the 2D drawing in front view

Strech the lines to make the triangle

Extrude the objects

Subtract the solids

Use SW Isometric and Hidden view for the final product

Results:

Conclusion:

The AutoCAD software allowa 3D sketches where solid objects or 3D surface are present. By using the 3D function of the AutoCAD software, one can illustarte or convert a 2D sketch into 3D illustration. This creates or allows the user to create multiple views including the perspective. By using the viewport command of the AutoCAD software, there full view of a 3D sketch can be achieve.