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Hi guy, Recently we have purchase infoworks icm 2020 in our office. But the local agency is use v8.5, Can ICM 2020 file downgrade to ICE v8.5 so the agency can read the file tsli

Hi guy I was arguing with my co-worker on constructing a temporary open channel. He is very insisting on use concrete trough for the bottom base of the 8m wide open channl. My stand is, it is a temporary open channel won't last that long, why dont we use cemet or epoxy reisn spread over the...

Hi guys, I’m new to U.S. construction flied, and next week they ask me to go out for RC checking. What is the term they use to check the steel bar pattern etc in the construction field? do they also submit steel bar manufacturer's certificates ? If so do they call differently? Thank you tsli

Hi guys: I am need to doing construction business, not to mention structtural. I have just received a site photo. As shown on the attached photo in link below can anyone identify what is back object surrounded by the re-bar? in what construction stage they put up the object? Thanks Tsli001

Hi guys, I'm just start to use infoworks CS, I have just received a file with iwl extension. I was able to us in foworks CS Administrator to view it. But, I do need it to do some update. How can I extract the data and use it on to normal infoworks to use it or convert to iwt that sort of...

Hi guys, I have a interesting question when one of my friend from oversea has questioning me on the sustainable development in drainage design in united states. I kind of bring up the Stomrwater management policy guildline from DEP, and the LEED design standard. What do you think on the...

Hi guys, I need some good poinst to make point for ductile iron pipe VS reinforce concrete pipe comparsion. In my case, ground cover is not an issue. I notice that DI pipe Ks is around 0.03 and RC pipe is around 0.15. So, it appear to me that DI pipe will have better hydraulic performance, but...

Hi guy, For soil Proctor test, can the test result can be used in monitoring soil backfilling progress in certain area?(behind schedule) Or, can sieve analysis data plot against time can let tell us how far the backfilling progress is? Thanks many tsli

Hi there: Is there anyone got a RC cal. sample for designing a in-situ square manhale? Mainly is for the mahole wall and the manhole base slab. Thanks tsli

Hi guys : I think I may posted the same type of question for manhole design before. However, I have not yet got my answer. So, I had decided to ask the question in a different way. Currenty, I am working in southeast asian with american drainage design experience. Believe or not, all the...

Hi guys: I am working on job in which require me to calculate the water level. I was thinking HEC-22 for water level calculation. I was wondering is there any spread sheet out there that I can do some study so I can modify my spread sheet? tsli

Hi there: In a project, I am ask to design a drainage manhole structure. I haven 't done it before. Is there anyone got any tips on it? I will also need to provide the structural aspect of the design, such as the re-bar, concrete etc. If there is a example will be great. tsli

Hi there: Hi there: Is there anybody have a construction sequence in how to build a box culvert? tsli

In my project, there is a hug twin cells culvert box that I need do a diversion for it. The problem is the area is so congested. So we are thinking about to use number of pips to go around it. My co-worker is worry about the velocity may reduce due the sudden change from culvert box into pipes...

Hi guys: I'm a us civil engineer who is working in hong kong right now. When I was US, we use hydroCAD or HEC-RAS for design. And, that's what I know what to use. Over in hong kong they use 'Infowork' software. I was wondering, is there anyone know how to use it? And, can anyone share some...

Hi guys: I am looking for a good pump design spreadsheet that can do head cal., efficiency etc, for pump selection. Can anyone can help me for that? tsli

Hi gus: I am doing some research on CSO project. I understand SWMM is capable for modeling CSO mitigation studies. I'm just got some questions regard this: 1.What parameter do I need for inputting into the progam 2.what method are they using for the sewer part? 3.what kind of result will the...

Hi guys: How does WMS delineate watershed? I know in GeoHMS-Arcview extension, once you input the shape or DEM. you define a elevation and GeoHMD delineate for you. How does WMS delineate? what kind of parameters do I need to input to WMS for delineate watershed?

Hi guys: I got a base fundamental question like to ask about water quality volume for a basin. I’ve been told that I should calculate form the orifice elevation down, and then compare with a certain percentage of the tribute impervious area. Is there any other way to do it? Thanks

Hi there: Currently I am working on a job that there are two ponds are side by side a 2 lanes roadway. The drainage guy believe one of the pond consider is a dam base on two conditions. 1=it is a 8' deep pond. 2=inflow rate is more than 50 ac-ft. Me and other senior engineer dont think so. And...