WEBVTT

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>> This is a video, a short
video presentation illustrating

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how to create multi-views
using paper

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and pencil, given isometrics.

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This is for the first
part of lab A, okay?

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So we're given the isometric
view on the right here,

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and we're supposed to create the
multi-views counting the width

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of the object.

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So the first thing you need

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to do is create the overall
boundaries of the views.

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There's six -- The width is
16 inch, counting the height,

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it's one, two, three four,
four units for the height here,

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and then for the depth, it's
also one, two, three, four.

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The depth is measured here.

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And take note that the
location of the front is always

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in the middle, and there
should be perfect alignment

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between the width dimension
between the top and the front

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and the height dimension
between the front and the right.

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The right is always
to the right of front

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and the top is above the front.

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So looking at the projection
of the details of the object

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from the isometric
into the fundal plane,

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the blue frontal plane
and projecting each

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of those corners, okay,
those who create this image

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on the frontal projection plane,
the front projection plane

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and then that horizontal
line is going

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to be projected along here,
and then on the side here,

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it will be going up to and then
going all the way to the right

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and then going down, and then --

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So this is the projection
of that U-shape right

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on the frontal plane into
the front projection plane

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and the front view
will therefore look

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like this vertical line here and
another vertical line here going

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down only three units,
two units as well

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and then this is the
right edge of the front.

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There's the bottom edge.

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Then here is the
little lines for the U

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and here's the middle
plane, okay?

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Now the back plane here,
okay, will perfectly align

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to the front, so it's
going to be behind

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that U shape in the front.

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So there's nothing else for
the front view except that.

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Now for the top view, the skinny
rectangle up here will be seen,

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because that's all the way to
the top, and on the other side,

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there's also that
skinny rectangle, okay?

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And then that plane
that is two units below,

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that plane right there will
also be seen from the top.

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Okay, but this is
nothing's covering it,

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so that should complete
the top view.

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Now for the right side
view, this rectangle

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on the right profile
plane will be seen,

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or it's actually a
square right here, okay?

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And then, we discussed
the right side view,

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the plane that is halfway
down right here, okay,

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that plane right there,
will actually be seen

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as a hidden line because
it's being covered

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by the right plane,
so it's hidden.

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Take note that there's perfect
alignment between the front

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and the top for the
width and the height

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between the right and the front.

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Now here's another example here.

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We're given the isometric again,

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so we count the width
here from the isometric.

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It's also six units, and then
we count the height, one, two,

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three, four also, so
the height is four,

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so the front view would be 4 by
6 and the depth will also be 4.

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So the right side
view will be 4 by 4.

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Now starting on the front
view, that skinny rectangle

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of width two and height
one will be shown here,

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and there's another
one at the bottom,

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that other skinny rectangle,

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and then that square that's
slightly behind right there,

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those two lines will actually be
seen as two vertical lines here,

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aligned perfectly
with the skinny --

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two skinny triangles
in the front.

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And then we will see this
line above here, okay?

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And also below there,
and then we're going

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to see the semicircle, okay?

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So the semicircle will
be seen right here

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and right here definitely
free handling the right --

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the semicircle and then right
here is the geometric center

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of both the semicircle and
the small circular hole

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of radius one will
be right there.

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And that I believe
completes the front view.

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Now working on the top view now,

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we will see this edge
here corresponding to that

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and isometric and that
moves to the right by two

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and it moves backwards by two
also, and now we're going to see

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that semicircle apart, okay,
will be a straight zenith,

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a straight line, because that's
perfectly aligned along the same

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depth, alright?

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And then that limiting
element will be shown here

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for the curve, and then
you will see the back plane

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as a single line.

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So those are the
only visible lines.

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However, you see that
there's right here,

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this square right here, okay,

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the isometric will actually
be shown as a hidden line.

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It's one unit behind
the frontal plane,

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so it's covered by
that top plane.

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So those are -- That's
a hidden line.

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Now, let's see for the
circular hole, okay,

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you will see the
limiting element here --

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element, both on the
left and the right

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and hidden lines as well.

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And that completes the hidden
lines for the top view.

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Now, let's look at
the right side view.

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For the right side view,

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we're going to see a shape
towards the front, okay.

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That's the kind of inverted
C-shape that we're going to see

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from the right, and here's
the semicircular part.

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It will only appear as a
rectangle, a semicircle

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around the -- from
the right side,

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which the vertical rectangle
in here are the hidden lines

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for the limiting element

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of the circular hole,
cylindrical holes.

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Take note that those
two hidden lines

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that I just drew should align
perfectly at the same height

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as the top and bottom
of the circle now.

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Whenever you have a
circle and semicircle,

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you need to indicate those
locations by center line,

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one on the right side view;

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also one on the top
view I just constructed.

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And also instead of leaving
the center of the circle

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as just a center mark, a
cross mark, we might also want

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to have present it as two
intersecting center lines.

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The center line length type will
be long- short-long and that --