NGINE RING DRAW
MUNAWAR ZAMAN BIN SHAHRUDDIN
Faculty of Chemical Engineering
Universiti Teknologi MARA (UiTM), Shah Alam
There are many times
when the interior details
of an object cannot be
seen from the outside.
Most often, sectional
views are important
to give info on the
inner details of an
• To show the inside details of a component it is
imagined to be cut or sectioned along a plane, the
cutting plane. Cutting planes are designated with
capital letters, such as A-A.
• Surfaces cut by the cutting plane are usually hatched at an
appropriate angle, say 45° with a density of lines in
proportion with the component.
• Symmetrical parts can be shown in half sections. Part or
'broken out' sections can be used.
Half section and a part or 'broken out' section.
CORRE L E L
CT AB L ING
here are some exceptions to the
general rules of sectioning:
• Shafts, rods, spindles,
• Bolts, nuts and thin
• Rivets, dowels, pins &
CROSS-SE IONAL VIE S
An AutoCAD T
• Hatching is a method of filling parts of drawings
with patterns made up from lines. To call on the
Hatch tool, you can either:
• Click on Hatch from the Draw dropdown button
• Type in command: bhatch OR bh, ENTER
• As we have covered in orthographic projection,
hatching is essential when it comes to sectional
atch a P
Firstly, construct a polygon. Then, create a new layer
called Hatch. Select a different colour for this
Command: bhatch, ENTER
Boundary Hatch and Fill window will appear.
Select pattern from the Swatch field (choose Earth)
Select angle of pattern (45°), and Scale (2).
Click on PickPoints. The window will disappear.
Click in the middle of your polygon. Then right click and
choose Preview. OK
• Turning ON the Associative option in the
‘Hatch and Gradient’ window is an
important feature of Hatch.
• It allows you to move object without
disturbing the original hatch.
Exercise: Sectional View
Construct the given two-view projection drawing, but in place of the front
view construct a sectional view based on a cutting plane passing centrally
through the plan. Use ANSI 31 as your hatch pattern.