Create terrain from element for intersection area

The normal process I would follow is:

1) Create the shorter centreline first

2) Create the road edges at an offset from the shorter centreline (to ensure they do not extend beyond its end station) and kerb returns, and hinge along main road edge between kerb returns

3) Create a terrain using the road edges, kerb returns and hinge as boundary elements

4) Use Add Feature with the element type as breakline to add the shorter centreline

If the boundary of the terrain is still a problem after the above steps then I would guess that it is a tolerance issue where the software is unable to automatically resolve inside/outside for the boundary so closing the entire boundary with an additional element across the back of the intersection (furthest away from the intersection) should help to contain the triangles in the enclosed area of all boundary elements.

The normal process I would follow is:

1) Create the shorter centreline first

2) Create the road edges at an offset from the shorter centreline (to ensure they do not extend beyond its end station) and kerb returns, and hinge along main road edge between kerb returns

3) Create a terrain using the road edges, kerb returns and hinge as boundary elements

4) Use Add Feature with the element type as breakline to add the shorter centreline

If the boundary of the terrain is still a problem after the above steps then I would guess that it is a tolerance issue where the software is unable to automatically resolve inside/outside for the boundary so closing the entire boundary with an additional element across the back of the intersection (furthest away from the intersection) should help to contain the triangles in the enclosed area of all boundary elements.

Thank you for your help :),Paul Cusack