Limiters


There are situations where we want to inhibit a movement from a source to a demand by a geometric impossibility.

For example, in the project there is somewhere a river that cuts access between two sections. Thus, the material cut in stretch 1 can not be taken to stretch 2, because there is still no way to cross the stretch. So, even though DMT, when viewed by KM alone, be small, movement should not be done. In this tab we inform you this.

Another example is when a section is excavated, the material is taken elsewhere and then this same stretch gets the material again. In this case, the DMT must be computed to take the material to that deposit.

Hypothetically, consider the matrix below. It tells you which movements we want to allow or not to:

Soil Fill Rock Fill Selected Material ReFill Soil Rock ReFill Replaces Sub ballast DME
First Class Cut yes no yes yes no no no yes
Second Class Cut yes no yes yes no yes no yes
Third Class Cut no yes no no yes yes yes yes
First Class Borrow yes no yes yes no no no yes
Second Class Borrow yes no yes yes no no no yes
First Class ReCut yes no yes yes no no no yes
Second Class ReCut yes yes yes yes yes yes yes yes
Third Class ReCut no yes no no yes yes yes yes
Replacement no no no no no no no yes
Undefined yes yes yes yes yes yes yes yes

Go to the Settings and enable the use of limiters:

Note that the Limiters tab is available.

In it, create a start and end station interval that covers the entire project axis. Select the source items that have a lower category of 2 and select the demands that only support soil:

Check the box in the last column of the third table.

Then select the third-category sources, and select demands that only support material with the figure:

Here, we see in the first frame the list of sources, in the second, the list of demands and in the third, a table where we inform the various sub-projects, with:

As the lines of limiters are inserted, columns with the same names are created.

So, the user must mark if one part can provide material from another part or himself.

If there are no geometric constraints as described, enter at least one item in the tab, with the initial incremental less than the smallest project station and final station larger than the largest station in the project. Select in the first frame, all sources, in the second frame all es demands and in the third frame check the box stating that all sources can provide all demands.

Note that this tab is only available if Limiters in the settings box is marked.


If any value is invalid, the text will be in red, indicating the error.

Cells with yellow background, are editable. Cells with white background, are read-only.