Converting a wire frame to 3D solid

[neo_clear]

After any assistance on this one please.

 

I have drawn a simple (enough) wire frame of a slab area, the slab has multiple falls in different directions and various high points that have been drawn up in 3d modelling space on AutoCAD 2007. My goal is to make the wire frame a solid to determine overall volume - this would be really useful for a variety of things I do at my work.

 

I have created a region for the base of the frame via a poly line but am struggling on linking the top of the frame to this and generally creating the solid.

 

Tried extruding however it only creates flat surfaces (to my knowledge) and as mentioned about the top of the area has 3-4 different z values.

 

Any assistance would be a big big help.

[ReMark]

Are the areas with the different Z-values flat?

[ReMark]

Does your slab look like the image below or more like a mountain range with peaks and valleys?

 

[neo_clear]

Looks like a mountain range rather than flats on different levels, please see attached pic which is exactly what ive done. Its hard to see due to the size of the slab but there are small falls from the stop surface lines, while the base is level (0)

[ReMark]

The Loft command might work. Or extrude then slice at an angle.

[MikeScott]

yeah, I'd use slice (no loft in my version). Make an overly tall 3d solid, and then use the slice command repeatedly on each "triangle" (even though you show squares).

 

Keep both sides on the slice command until you're done, then delete the pieces you want to get rid of, and Union what's left so it's one piece again.

[neo_clear]

Will give the extrude and slice method a shot and let you know how I get on. Thanks for the help

[JD Mather]

Will give the extrude and slice method a shot and let you know how I get on. Thanks for the help

 

See page 11

http://home.pct.edu/~jmather/AU2007/GD211-2P%20Mather.pdf

is this what you are trying to do?

[neo_clear]

Yes thats basically what I am attempting to do. Have managed to extrude the slabs areas, taking the highest point in the area. I understand the concept of the slicing however it is proving a bit tricky for someone at my level as basically i want to select 4 points, the start high point and the 3 lower levels I wish to slice to.

The picture below should explain what i am doing.

 

The base is effectively 0.000m and the whole area has been extruded to the highest point 0.232m

 

The desired levels for the corners are as follows

North corner - 0.135m

East corner - 0.192m

South corner - 0.232m (high level overall extruded hieght currently)

West corner - 0.177m

 

Again comments are really appreciated and thanks again

[MikeScott]

In geometry, a plane is a surface that travels to infinity. When you slice, you are selecting three points that occur on that cutting plane you want to use.

 

To define that plane using that square, pick two points along one face edge, and one point along another edge of that same face. The points can come from anywhere along those two lines, and they will tell AutoCAD where that cutting plane needs to be.

 

The cutting plane is illustrated in this image as a red line.. so in this case, I'd run the Slice command, then select the slab, and then pick three points from anywhere along those 4 red lines. (no more than 2 points per line though).

 

Then select "B" to keep both sides, and then erase the side you don't want.

 

This works through overlapping the slab with the cutlines you have shown in your original image. Switch to 3d wireframe view so you can see the cutting plane inside the slab.

 

Perform this on each square of your slab, and then use the Union command to rejoin them as a single slab.

[neo_clear]

The slice function is working a treat thanks alot for all the responses!