A better way:
Open content builder, make a parametric part.
Create a top work plane. Add Geometry - two lines with the end points
connected. Add two round profiles to the top plane - one big, one very
small. Right click on the big profile (on the tree) and add a path - click
the first line - the cylindrical section! Navigate the tree to the
modifiers branch - right click - add path. Choose the second line, the
small profile, then the big profile - the cone section!. If you get it
backwards - undo - repeat but pick the large profile first. Dimension
the height of the cylinder and the cone. Also, dimension the diameters of
the profiles. Make sure you use the add dimension right clicks of
content builder - not AutoCAD or AEC dimensions.
If you want to add a manhole or side mounted
connectors, you will need to add lines perpendicular to the silo's axis
at a dimensioned distance and extrude profiles along
them.
Add connectors. Now, go into size parameters,
configuration, and change the values for the heights and diameters to
lists. Switch to values - enter your list of sizes for each
parameter. Make the second profile very small to approximate a
cone.
Generate the bitmap - and you are done - a
parametric silo in 10 minutes!
Once you are familiar with Content Builder it
really is that easy - no kidding! Sure beats scaling
blocks...
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
you
could draw a cylinder 12 inches in diameter and 10" tall with 0,0,0 as it's
base point, add a cone on top also with a 12 inch diameter and 2" tall... it's
base point would be 0,0,10 --
block it and call it silo using 0,0,0 as it's base point. --
if you needed a silo 15 feet in diameter and 30 feet tall... just insert
your silo block with an X and Y scale of 15 and a Z scale of 30. --
I'm actually quite unfamiliar with normal silo dimensions and this might
work better using a cylinder of 8 or 9 inches and a cone of 4 or 3 inches. the
key is to make the height and diameter 1'... that way the dimensions in feet
are always the scale factor. so if your silo were 10 feet in diameter and 50
feet high... the scale factors become X and Y of 10 and Z of
50.