PIT DESIGN

CREATE MERGE MODEL (OP Design > Create Merge Model)

1. Create Bench Grids: OP Design > Create Bench Grids
   1. Bench Grid Setup > Base elevation
   2. Bench height
   3. DD name (BENCH)
   4. Limit Top Bench (either number of benches or elevation)
   5. Generate List
   6. OK

2. Bench List: OP Design > Bench List
   1. Pit crest
   2. Grid Directory (BENCH)
   3. Fill with Grids
   4. Enter Wall slope / berm dimensions
   5. Enter Strip Slope / Berm dimensions
   6. Save
   7. OK

3. Pit Design Boundary: OP Design > Pit/dump Design
   1. Bench List (Select bench list and load)
   2. Design > Boundary > Digitise
   3. Bench (base bench)
   4. Digitise > Toe
   5. OK
   6. Select base Polygon > right click > accept
   7. Design > Boundary > Automatic
   8. Project Up
   9. From: Base bench (toe)
   10. To: Top bench (crest)
   11. OK

4. Pit Design Strip
   1. Design > Strip > digitise
   2. Bench (base), Strip 1, toe, OK
   3. Digitise strip inside pit boundary, OK
   4. Design > Strip > Offset
   5. Bench (base), toe
   6. Strip from 1 To: (estimate number of strips required for pit) e.g 42
   7. Strip width
   8. OK
   9. Design > Strip > Normal Automatic
   10. Multiple Strips: From1 – To end stip (e.g 42)
   11. Project Up From: Base Bench, toe
   12. To: top bench, crest.
   13. OK
   14. Design > Strip > First/Last Strip
   15. First, Digitise, (digitise inside to outside boundary, right click, accept)
   16. OK
   17. Last, Digitise (digitise inside to outside boundary, right click, accept)
   18. OK
   19. Design > Strip > Strip Ends
   20. From – To Bench
   21. From – To Strip
   22. OK

5. Pit Design Blocks

1. Design > Block > Layout Pattern
2. Offset
3. Block Start: 1 End: e.g.15
4. Block Width
5. OK
6. Design > Block > Generate
7. OK
8. Design > Block > Validate
9. Check Output window for errors
10. Design > Block > Display