Define Layer Target/Material/Subgrade
Function
The Define Layer Targets dialog box (shown here)
offers many functions that will ultimately make up the surface models
used in volume and material calculations. Every entity (line, polyline,
point, etc) in a drawing is assigned a layer name. Carlson Takeoff uses
the entity layer names to define which entities represent the existing
ground surface, the design surface or no surface. These surfaces are
referred to as the "Target" surfaces.The drawing entities are assigned
their target surface by their layer name. For example, if polylines
representing design contours are on the layer "Final", then "Final"
will be set as a layer for the design surface. For layers of entities
that are for neither existing nor design surfaces (such as text labels
for street names), the layer target is set to Other. The Define Layer
Targets dialog has three lists for layer targets: Existing, Design and
Other. To switch between lists, pick the tabs at the top of the dialog.
To move a layer to a target destination, highlight the desired layer,
choose the target from the Move To list
and pick the "Move To" button. All layers populate the "Other"
target before being assigned to "Existing" or "Design".
Besides the basic three layer targets (Existing, Design and Other), you
can add more target surfaces with the Add Target button. When another
target is defined, there will be another tab along the top of the
Define Layer Targets dialog. Then layers can be assigned to this
additional target surface. The only pre-defined additional surface is
Overexcavate. The layers that are assigned to the Overexcavate target
can be modeled into the Overexcavate surface using the Make
Overexcavate Surface command. Besides Overexcavate, the other
additional targets are user-defined. The layer targets can be modeled
using the Make User-Defined Surface command. Then these surfaces can be
used in Takeoff commands by assigning them to a Takeoff existing or
design surface using the Set Active Surfaces command.
Edit Materials
The "Edit" button activates the Edit Material dialog box (shown here)
and allows you to define the Material name and Subgrade depths and
names. Besides
assigning target surfaces by layer, layers are also used to define
material names and subgrades depths. By assigning a material name,
Subgrade names and
depths to layers, the volume, area, length and count for entities on
these layers can be reported. Also the depth is used to vertically
adjust the design surface. The
polylines on the layer used for a Material
must be closed polylines. Carlson Takeoff supports nested
Subgrade polylines for exclusion areas such as islands by counting how
many Subgrade polylines surround an area. If the number is odd, then
the area is included in the Subgrade. The even count regions in the
area are
not part of the Subgrade. To activate the Edit Material, select a layer
from the list and then
choose "Edit".
Include in Material Quantities Report
With this option checked on, the material that is named will appear in
the Material Quantities Report. The report will include either the area
of the material, the linear length of the material, or the number of
items counted on the layer defining the material. This is accomplished
by choosing "Area", "Linear", or "Count" for the Material Type.
Set Color For 3D Drive
This options checked allows you to assign a color for this particular
material for display purposes during the 3D view/drive simulator.
Material Type
This will report the subgrade by area, linear length, count, or as curb
area. If you choose Back of Curb/Pavement then you can pick on the Curb
Dimensions button and bring you to the below dialog:
This option will calculate your curb volume as well as act as the limit
of the pavement. The pavement limit will be from the Back of Curb
polyline offset by the length of the Curb base. In the above case the
base is 30 inches wide. Therefore, the pavement area will stop 30
inches before the Back of Curb polyline.
Material Cost Per Cost Unit
Use this field to add the value of the multiplier for the unit cost of
your
material. If the material type is an area that has multiple subgrades,
use the available fields below to add each individual subgrade name,
depth and cost value per unit type. If a linear or count type material
type option is selected, use the "length in feet", or the "count" unit
options.
Adjust Design Surface by Depth
This determines whether the subgrade depths are incorporated in
the design surface or not.
Area Subgrades
Depth Units
Select the "feet" or "inches" as the unit value desired for depth of
subgrades.
Subgrade Name Depth Shrink Cost
Per
Cost Unit Density
Use these options for areas that are represented with a single/multiple
closed polygon/polygons in the drawing, but have multiple material
types defining the surface. Simply name each "lift" in the area, issue
a depth value and add a cost unit if desired, or click on select and
choose a material from the Materials Library (see Define Materials
Library for more). Carlson Takeoff will
report each subgrade material vaule in the material quantities report.
The Shrink factor is multiplied by the subgrade volume in the material
quantities report and represents the fill shrinkage. A Density factor
can be entered in when using Cost Per Tons.
If user entered values are needed in the report use the "Edit
User-Fields" button to activate the "User Defined Features" dialog box
shown here. Choose the "Add" button to define needed fields shuch as
TONS of material or BAGS OF GRASS SEED for reporting options.
Once all of the material subgrades, depths and cost units or user
defined units have been defined, select save to prserve the settings in
a .trg file, the "save as" function allows the user to name the file to
load later.
Prerequisite: none
Keyboard Command: define_tk_layers