Rounding and Rock Shelf

Rounding

Use this function to fine-tune the verge shapes of the cross-sections.

• The verges should preferably be shaped like a natural part of the landscape.

• This function fillets the toe of embankments and the apex of the cutting (i.e., the intersection of the terrain surface and connecting the outermost surface of the cross-sections).

• Circles will be drawn on the cross-sections and will mark the outermost point in the road profile.

• Rounding off the verges will often require more road area (and right-of-way boundaries) and should not be applied to consider the same.

• Be also aware that slope areas drawn from Novapoint do not include additional required space from rounding off against verges – these functions only draw the theoretical fill/cut verges.

• Additional volumes necessary for rounding off against verges (cut or fill) are not included in standard quantity volume reports, but quantities are calculated separately and summarized in a special report concerning Rounding off against verges.

• This function is applicable for rock-cutting surfaces.

Run the function from the following location of the floating window Road Model:

MOUS_ICO Menu: Data > Cut and Fill Elements > Rounding and Rock Shelf

The dialog box Rounding and Rock Shelf will pop up.

• Details are defined on a section basis using the columns From and To.

• The buttons Insert and Delete are meant for rows in the table.

  • Select a row and use the button Insert to insert a new row. A new row will be inserted above the row selected.

  • Select a row and use the button Delete to delete the selected row.

• Use the shortcut menu of the table for editing.

• Values in the cell can also be copied using the plus symbol (activated when the cursor is at the corner of a cell) and dragging.

• Left/Right - The radius of the fillet is to be defined in these columns.

  • If a radius is not defined or value 0 is defined, calculations or done based on the design standards.

• Use the button Apply to execute the function.

Rock Shelf

After rock blasting and clearing are completed, the rock should be uncovered to a certain distance outside the theoretical top of the rock cutting. The area which is to be uncovered is called the rock shelf and is defined with a set width (B) and an additional width (BT) [proportion of cutting height (H)].

• The rock shelf can be defined separately for the left and right sides of the centerline.

• Inserting the rock shelf can be controlled by defining a minimum height. If the height of the slope is less than the defined height no rock shelf will be inserted.

From the point at which the outermost rock-cutting surface cuts the top surface of the rock, the soil will be removed until the rock shelf requirements have been met.

• Before the rock shelf can be terminated, there must be a rock surface (from the description of the top surface of the rock in the terrain data) with a gradient less than the first soil-cutting surface.

• The rock shelf surfaces will be stored in order of surface number, for internal use by the program (surface +/- 5.9).

The possibility of having rock shelf surfaces in the road model depends on the following:

• First of all, terrain subsurface details are to be defined either in the terrain model (refer to Novapoint Base) or using the function Sub-surface Layers.

• There should occur rock formation (subgrade type cut) in the road model, which depends on alignment, terrain, and the subsurface details.

Quantity volumes regarding additional rock shelf clearing are included in the earthwork cuttings.

Use the tab Rock Shelf of the dialog Rounding and Rock Shelf to apply the above concept.

• The buttons Insert and Delete are meant for rows in the table.

  • Select a row and use the button Insert to insert a new row. The new row will be inserted above the row selected.

  • Select a row and use the button Delete to delete the selected row.

• Use the shortcut menu of the table for editing.

• Values in the cell can also be copied using the plus symbol (activated when the cursor is at the corner of a cell) and dragging.

Section

The rock shelf can be defined on a section basis. Define the section using the columns From and To.

Width (B)

Define the width of the rock shelf.

• Width is defined in meters and calculated horizontally.

Additional

In addition to the width, height depending on the width extension is to be defined. The rock shelf extension is defined using a factor (%), which will be multiplied by the height of the rock cutting.

• Define the factor for the additional width of the rock shelf.

• Additional width (BT) = Height (H) * factor.

Height

Control factor for inserting rock shelf. Define the minimum height (meter). If the height of the slope is less than the defined height no rock shelf will be inserted.

Apply

Use this button to execute the function.

Next topic: Ditch Depth