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I posted this about a year or two ago, a spreadsheet that does mannings pipe flow and solves for depth of flow and velocity. The instructions are in the post's. http://www.eng-tips.com/viewthread.cfm?qid=227242

If you have Windows 7 Professional 64 it should work, it will run as 32 bit from what I understand. If you have windows 7 home premium, it probably won't work.

I got a Dell Precision M6500, from their Business Outlet for about $2500, it has 8Gb ram(1333), 1Gb Quadro3800, i7(860), and 17"RGB display(1920), wifi(N), about 2.5 to 3 hours run time on batt., built very well, metal casing, you might also want to look into the Alienware laptops. I've been...

I got the same system (Dell M6500) as fishon, only with 8Gb ram. I'm just as happy with it, it fly's.... I got mine through the Dell business Outlet for a good discount. It is built really sleek for a 17 inch machine.

You also might want to consider designing for larger vehicles, oil delivery, furniture moving, etc...

I would also suggest the plastic cellular reinforcement that Debaser mentioned. Although I'm not from Florida, I've been down there a lot, I've seen the plastic cells used on the Blackpoint Wildlife Drive on Merrit Island (National Wildlife Refuge). It looked to me like it stands up pretty good...

Thats correct, the sidewalk can have the same grade as the road. No ramps for ADA at that grade over 5%.

Call the ADA, I'm pretty sure it can follow the grade of the road, at least here in MA it can.

I always do it in a spreadsheet also. It is easier for me to follow that way and also for the reviewer.

Wish I knew how to edit my comment above, The macro might be a little confusing, it basically iterates through Manning's equation to solve for the depth of flow. The Macro can be reduced in size, I just jammed it together to get it to work fast.

You can also look at this thread from last year. I posted a spreadsheet that calcs the flow depth and velocity for any flow. The macro is in Visual Basic and runs in the excel spreadsheet. Instructions are in the tread. http://www.eng-tips.com/viewthread.cfm?qid=227242

Oops, didn't see the 1-2 hours, sorry. Must be real heavy traffic problems to go 20 miles in that amount of time. I wouldn't want to travel over an hour one way to work, anything more than that will drain you out in no time.

20 miles is not that far to travel for work!

AutoDesk University was this week in Vegas, they had some stunning stuff to show. The newest 2010 versions of all their software is really improved. They will be placing the videos of the classes they had and demos on the Autodesk University website in the very near future.

I have the self-inker for a few years now. Have done thousands of plans with it. It comes out crisper than the ink and stamp pad type. Never had a need for anything else.

On youtube you will find a lot of video tutorials. http://www.youtube.com/results?search_query=autocad+2010&search_type=&aq=1&oq=autocad Just do a search for Autocad and version number. There are companies that sell video lessons, like Retreive Technologies...

You might want to take a look in "Architectural Graphics Standards," I don't have a copy, but I know the have some ramps in it. Mainly for parking garages, I think it might go up to 16% with approach mini ramps at less of a slope to prevent bottoming out as CVG said. We had used it as a guide...

Unemployment Compensation just pays the bills.

Take it! I've been out of work for 8 months, there is not much out there!

I don't know what state you are in, but most states have got a lot of money for roadways. My state, Massachusetts is looking for materials people at the Massachusetts Highway Department. I would imagine other states are too.