Rolling Ramp Dependencies

Firstly, open the Source Path for a piece of equipment and build a ramp path for a single strip

Important Check that your Source Path order is set to "Strip/Bench"

e.g. Alpha/S1/{B1..B6}- B6/D/@0 - {130..105}

Create an Offset Dependency

  1. In the Predecessor Range, paste your Source Path you made for the single ramp. Important Change the entry for the Strip level to a "*".

  2. Copy and paste the same text from your Predecessor Range into your Successor Range. Important Tick the Inverse box.

  3. In your Offsets section, create a positive one Strip offset, add a "*" for each other level below Strip except Bench.

In your Bench offset, enter "-1-0" or "-1,0". This allows your first ramp to be dug out as you build your second ramp.

Go back to your equipment. You can now remove the entry for the ramp that you built earlier. The source path can now be as simple as "*". In the below example, the path is:

Alpha//B1-B6/D*

Important Check that your Source Path order is set to "Strip/Bench"

To add a switchback to each ramp, so that you maintain an access point, follow the steps below:

  1. Make sure to either amend the original ramp dependency with the adjusted depth. The switchback will commence from the final depth of this ramp.

    Original ramp: Alpha//{B1..B6}- B6/D/@0 - {140..85#2}*

    Amended ramp: Alpha//{B1..B6}-B6/D/@0 - {130..105}*

    Create a new Offset Dependency using the template from above.

    As before, type out the switchback path for a single strip in your Source Path.

    e.g. Alpha/S1/{B6..B1}-B1/D/@0 - {105..85;85}

  1. When creating your switchback ramp make sure to swap the Block direction of your dumping.

    First ramp: Alpha//{B1..B6}-B6*

    Switchback: Alpha//{B6..B1}-B1*

    Important Make sure that you set your Predecessor Processes correctly.

    Go back to your equipment. You can now remove the entry for the ramp that you built earlier. The source path can now be as simple as "*". In the below example, the path is:

    Alpha//B1-B6/D*

The above template and method can easily be modified to work for destination scheduling.

Important Check that your Destination Path order is set to "Strip/Bench"

Single Ramp Offset Dependency

As before, the best way to start this process is to create a single ramp for a single strip.

  1. Ensure that the Relationship of your dependency is set to Destination Waits On Destination.

  2. Paste your single ramp path in the Predecessor and Successor Range. Put a "*" in the Strip level and ensure Inverse is ticked on for the Successor Range.

  3. Enter your offset values as shown.

Addition of a Switchback Offset Dependency

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/edb8a514-abb4-433e-8930-7a2000db1fa6/RRampSwb.gif

  1. Note that the range has been changed. The ramp depth has been halved and consequently the bench offset is now one bench every second block.

    Predecessor Range (without switchback): AlphaIP/{B12..B1#2} - B1/@0 - {20..130#2}

    Predecessor Range (with switchback): AlphaIP/{B12..B1#2} - B1/@0 - {80..130}

  1. When creating your switchback ramp make sure to swap the Block direction of your dumping.

    First ramp: AlphaIP//{B12..B1}-B1*

    Switchback: AlphaIP//{B1..B12}-B12*

Splitting the Dump into Two Ramps and Two Switchbacks

NORTH RAMP

  1. The range has been changed to build a ramp in half the number of blocks compared to the example above.

  2. The input into the Block offset has been changed to "0". This due to the V shape the dual ramps will build into the dump.

NORTH RAMP SWITCHBACK

SOUTH RAMP

  1. Make sure your ramp in the opposite direction has the correct range and direction. Again it is generally easier to build the ramp for a single strip and paste it in rather than trying to amend your original ramp.

    SOUTH RAMP SWITCHBACK

  1. Ensure you have a dependency to prevent dumping in advance. The above is an example where dumping is prohibited unless all blocks in the previous strip have been dumped to the level the truck is currently attempting to dump at.

  2. This line prevents your equipment dumping straight up at the tail end of your highest ramp structure.