Additional Exercise;
In this discussion, you were given specific instructions about laying out and editing the example alignments for the project. For a learning environment, specific instructions are necessary so that your results are predictable and understood. Real design is rarely like this, however. Instead, you are typically given some broad parameters, and you need to rely on your own skills and creativity to come up with a solution. The better you understand the tools that you have (Civil 3D in this case), the more quickly you can create solutions. The more quickly you can create solutions, the more scenarios you can test and the more likely you are to achieve the best design possible.Open the drawing named Road Layout Alternate.dwg located in the Chapter 05 class data folder. Save the file as Road Layout Alternate 1.dwg, and use alignments to create a new road layout based on the parameters listed after this paragraph. Repeat this for second and third alternates. For at least one of the three alternate layouts, try just roughing something in and relying on the editing tools to get it just right. You can grip-edit, add and remove components, and edit numerically at will. With practice, this approach becomes much more efficient than spending a lot of time laying out temporary construction geometry, as you saw in the second exercise in this section.
Here are the alignment design parameters:
- 150' (45m) minimum offset from road centerline to back of lots to accommodate 50' (15m) right-of-way, adequate front yard, single-family residence, and adequate rear yard.
- Perpendicular intersection with existing road that is ideal for safety and accessibility.
- Avoidance of steep area to the south.
- Uniform geometric properties where possible, such as 90-degree angles, parallel lines, and so on. This is recommended for simpler, more efficient stake-out and construction.
- Avoidance of the farmhouse and buildings, because that part of the property will be deeded back to the original owner.
Download Exercise File :