E-PORTFOLIO BRIEF

Create a Mahara e-portfolio based on the template Revit and Sketching E-Portfolio.

Orthographic 6

Introduction

Orthographic projections are used to

represent 3D components on a flat surface

in a 2D form. The two main types are First

Angle Projection and Third Angle Projection

(TAP). We will focus on TAP.

Perspective

Introduction

Perspective drawings represent most faithfully

the way spatial configurations look in real life.

They communicate overhead or suspended

forms particularly well, and sections through

structures that need to be seen spatially within

an enclosure. Perspective grids can be con-

structed simply and be drawn over again and

again on tracing paper at any scale in

presentation drawings or quick sketches.

Isometric

Introduction

Isometric drawing is one of the most popular

engineering drawing methods because it lets

you see the top, front and side of what you are

drawing. Its distortion is gentle, unlike perspec-

tive, and it gives you a crisp model of what you

have in your minds eye.

Oblique

Introduction

In an elevation oblique drawing the frontal

plane is an orthographic elevation and the

side planes are drawn at 30° 45° or 60°. If a

measured drawing is being constructed with

30° side planes, it's lengths are not fore-

shortened. If 45° or 60° side planes are used,

all lengths are halved to minimise the optical

distortion.