Sections of Solids
Perpendicular to the
VP and Parallel
to the HP:
1. Ok..! Let us imagine that a pentagonal pyramid of base 25mm and height 55mm rests with its base on the HP such that one of its edges is perpendicular to the VP. A section plane parallel to the HP and perpendicular to the VP cuts the pyramid at 20mm from the apex.
1. Draw the line XY.
2. Draw the top view as a pentagon and name its corners.
3. Draw projectors from each corner of the top
view through XY.
4. Draw the front view as shown in the figure and name its corners.
5. Draw the section plane in the front view at
20mm from the apex and name the
sectional points.
6. Draw projectors from each sectional point in
front view so that they cut the
corresponding edges in the top view.
7. Name these points and join them.
8. Draw the hatching lines to get the sectional top view.
2. Ok ..! Let
us imagine that a regular pentagonal prism of base edge
25mm and height 60mm rests on the HP
on one of the edges of its base and
with its axis inclined at 30 to
the HP. A
section plane
parallel to the HP and perpendicular to the VP cuts the prism at the highest corner
of the prism's base.
1. Draw the line XY.
2. Draw the projections of the prism placed in
the simple position (the axis is
perpendicular to the HP and parallel
to the VP).
3. Rotate the front view so that the axis is inclined at 30° to XY.
4. Draw projectors from the front view through
XY and from the initial top view.
5. Draw the rotated top view as shown in the figure and name its corners.
6. Draw the section plane in the rotated front
view through the top corner of the
base and name the sectional points.
7. Draw projectors from each sectional point of
the front view through XY to cut the
corresponding edges of the top view.
8. Name the points and join them, as shown.
9. Draw the hatching lines to get the sectional top view.
View Online : Click Here to view Online.
Download : Click Here to download full Lectures.
No comments:
Post a Comment