FM Tute M02 ARC Define Roughness: Difference between revisions
Content deleted Content added
Tuflowduncan (talk | contribs) |
Tuflowduncan (talk | contribs) |
||
| (2 intermediate revisions by the same user not shown) | |||
Line 8:
*<b>2d_mat_FMT_M02_DEV_001_R.shp</b>, and
*<b>2d_mat_ FMT_M02_DEV_Buildings_001_R.shp </b>.
<li>Open both layers in ArcGIS. The <b>2d_mat_ FMT_M02_DEV_001_R.shp</b> layer contains polygons defining grassed areas and roads within the proposed development. The <b>2d_mat_ FMT_M02_DEV_Buildings_001_R.shp</b> layer contains polygons defining the buildings within the proposed development.
<li>The materials attribute for a number of polygons representing proposed roads in the <b>2d_mat_ FMT_M02_DEV_001_R.shp</b> layer have not been assigned and will need to be populated. Assign a Material ID of 2 to these polygons as shown in the figure below. Leave the remaining larger polygon with a Material ID of 1.<br>
<br>
Line 15:
All polygons within the '''2d_mat_ FMT_M02_DEV_Buildings_001_R''' layer represent the buildings of the proposed development and will have the same Material ID of 3. To update the 'Material' field from 0 to 3, open the 'Calculate Field' toolset and populate the dialogue box as shown in the figure below.<br>
<br>
[[File:M07 mat update ARC.png|600px]]<br>
<br>
<li>Open the Materials.csv file within the <b>TUFLOW\model\</b> folder to observe the Manning’s n values that will be assigned to each Material ID.</ol>
=Conclusions=
| |||