Plan oblique and isometric drawing are both ways of representing an interior, building or object.

When creating a plan in oblique form, you can use the actual plan of the room as the base. The base plan can be rotated to 45 degrees or 30/60 degrees and projected up vertically.

An isometric drawing is when the objects vertical lines are drawn vertically, and the horizontal lines in the width and depth planes are shown at 30 degrees to the horizontal. It gives a more realistic expression but the plan is slightly distorted.

I used a set square of 30, 45 and 60 degrees to measure the angles.

We were given an image of a room and its dimensions and told to draw it at a scale of 1:50.

Room plan

From this plan, I drew two different orientations using the plan oblique technique.

Plan Oblique

I then went on to drawing the remaining two orientations using the isometric technique.

We also looked at how to draw cylinders if you were looking from different angles. The bottom and top ellipses are seen from different angles and so are not drawn with the same shaped curvature.

Cylinder drawings

Our self directed work from this session was to create a plan oblique drawing of a room in your halls of residence. I drew the kitchen and used the plan that I had previously created a few weeks ago.