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Agreed, 1:48 is the real limit. The standard really is ANY direction. Slopes in both directions can get complicated in construction so it's best to keep the design flat in one direction and 1.75-1.85% the other way for construction tolerance considerations. A laser level can be laid in any...

The local floodplain administrator may also have a repository of historic floodplain maps. It is often beneficial for growing communities to keep such records to see how development impacts their local floodplain areas. This information is useful in drafting new flood prevention ordinances...

While the applicability of the NRCS Method of runoff calculation can be debated for sites that small, I always question the use (Modified) Rational Method for volume calculations. Rational Method was designed to calculate peak flow rates. NRCS Method was designed to calculate runoff volume...

I'm assuming you are able to plot to PDF in color already and only want to change the plot to black lines. More instruction is needed if you are unable to plot at all. Plot using "monochrome" plot style instead of "none" (also called a ".ctb" file). That should set all lines to solid black...

One of your problems is your 32-bit system. Always run a 64-bit system if you have the option. Not only does the RAM count toward the 4GB memory limit, but the video memory also counts against the limit. So some of your memory will be unavailable for windows to use. Your gaming card should...

eea: I remember fondly Dr. Richardson's Toad Suck stories from my days at Rolla. The Dr. is a very knowledgeable man and I learned a lot from him. I never thought I would end up in Arkansas after school but did and even found this one day: http://toadsuck.org I was planning a trip to Rolla...

Here are a couple other options: Dynamic blocks are available in later versions of CAD and they can be created with the block editor. Some of the parameters allow stretching the block in a predefined manner. For instance, you can create a 3 dimensional representation of a standard 2x4...

I know with Civil 3D we can define an object (such as a roadway cross section) and run it along an alignment (polyline) to create a corridor. After creating the corridor, the alignment can be modified (shifted horizontally and vertically, extended or contracted) and the corridor is updated...

The issue may be with your video card hardware and Autodesk graphic driver certification. Type 3DCONFIG in the command line and "check for updates" button to see if your driver is up to date. You can also change the setting using "manual tune" to see if that fixes any of your issues. I had...

I have not run into this situation specifically where underdrains were not allowed to be directly connected to the storm sewer system. However, this regulation may have to do with stormwater quality. Perforated drains under the ground surface, while typically wrapped with a geotextile fabric...

Another opportunity for the parking would be to provide some overflow in the form of stabilized grass parking. Grasspave is one product name that comes to mind and it is rated for truck traffic: http://www.invisiblestructures.com/grasspave2.html You may be able to negotiate a hard surface...

We use C3D alone to produce our project drawings. C3D is basically the combination of Autocad and Land Desktop. Autodesk also includes Hydraflow software to evaluate the detention requirements (for commercial sites or full subdivisions). The grading portion of C3D should be all the 3D...

Planting requirements are typically found in the local zoning code or subdivision regulations. In my experience the planting requirements are based on one or more of the following: the zoning of the property, the use of the property, the number of parking spaces, the size of the facility, and...

dmband, I don't know of a way to do it automatically. That's not to say it can't be done. Station labels along an alignment are easy in plan view, those correspond to the sections where the elevations can be read. It seems a little redundant to list top and toe of slope elevations in plan...

Check your model space dimensions again to verify that the line that is dimensioned as 10cm is really 10 units long. Dimension styles can be manipulated to display different units (ie if I draw a 1 unit long pLine I can dimension it to be 12 inches or 1 foot very easily). Question, if you...

You are better off adding 3D polylines (featurelines) at the top and toe of the slope to create the surface of the slope structure. Then create sections every 50' or so (depending on the scale of your slope structure you may want to reduce the increments) perpendicular to the slope, as you would...

We use it for 1 acre commercial jobs where we have more stuff to fit inside that small site. We end up with an abundance of feature lines to create our proposed surface for the amount of detail we require. I'm sure it would be easier for a residential development. There is a pretty steep...

This is a GREAT topic. While our company is headquartered in Arkansas, where the stormwater regulations are relatively lax, we have 6 other offices around the country and our top clients develop sites in all 50 states. Many of our engineering staff maintain additional certifications as...

I noted the different array command in 2012 the other day. While it is different, it seems simple enough to get used to. While it does create a block of the objects instead of leaving them separate as the previous command did, I believe you can simply explode the block created by the array and...

Within 0.02". That helps a lot! Thanks flight7 Nate the Great www.ceieng.com