Thanks for information, regarding beam and plate clarification, they have used this on previous projects not sure of the justification for the steel plates on previous projects,not sure of all of the details for this site yet.
Re:fattdat - some states break out the distinction for certain...
I have a client that needs a design for a 15-20 foot deep excavation in VA, does VA require Structural Engineer design of Shoring or can a PE stamp the shoring design?
Have you had any experience or thoughts about FLDWAV by the National Weather Service. Illinois DNR allows HEC-RAS, HMS and FLDWAV.
I have used -RAS for Floodplain Modeling/BFE determination, however have not performed Dam Break Analysis before...
Based on reading thorough HEC-RAS Manual and...
Thanks to both of you for your input, I spoke with Will Thomas of the HFAWG and he reccomended using engineering judgement to see if we can get within the +/- 50% error. The other consultant across town came up with a Q of approx 3,200 using the Clark Unit Hydrograph and we initally had 9100...
I am working on a flood study to evaluate the 100-yr BFE for a creek directly adjacent to a proposed landfill. (19.4 sq. mi drainage area, all agriculturual very flat, a lot of depressional storage in fields. The stream is highly channelized(4+ miles) and ungaged.
Using TR-20 flow calculated...
Thanks for your input, I think I will look at HEC HMS next. I work in Illinois and we have some fairly good regional rainfall data (ISWS Bulletin 70 by Huff and Angel) and ISWS Bulletin 71 for the 6-county Chicago Area. They have the Illinois broken into several regions and have rainfall data...
I have use PayDirt (Trimble) in the past and it is rather intuitive and easy to use. Their customer service is very helpful too. A lot of the contractors in Northern IL use Paydirt and were even willing to share thier secrets.
Paydirt was in about the $5,000.00 range several years ago, I am...
I have been using Win TR-20 by the NRCS for detention pond sizing, flow calculations, etc. I was lookin on the HEC website and saw HEC-HMS listed as the replacement for HEC-1. I have not used HEC-HMS, but thought it might be useful to learn it.
Does anyone have any thoughts about the pros and...
I have use AutoCad, and Land Development Desktop for cut/fill calcs. Initally I adjust my create an ex-topsoil layer by adjusting by the topsoil thickness and then create a subgrade layer by subtracting off the bldg pad thickness, parking lot thickness, and the topsoil respread thickness to...
I have a project with miscellaneous fill (mostly fine silty sand) to 7-feet, peat to 10-feet, underlain by medium dense fine sand to about 18-feet where the sand becomes dense to very dense N=50 for 4 inches) . This sand was encountered to the maximum boring depth of 35-feet below grade...
