Minor injuries reported.
https://www.nbcwashington.com/news/local/3-injured-after-pedestrian-bridge-collapses-in-northeast-dc-authorities/2709327/
https://goo.gl/maps/ME9NAwJMjRsYYUFg8
300 homes threatened. Pollutant laden water being discharged to bay to stave off collapse.
https://www.miamiherald.com/news/local/environment/article250410696.html
https://www.google.com/amp/s/www.washingtonpost.com/local/public-safety/dc-crane-collapse/2021/03/17/b7b70fec-872a-11eb-8a67-f314e5fcf88d_story.html%3foutputType=amp
To add insult to injury, the rigging broke when they tried to right it and they dropped it again...
What apps have you found to work well? I'm looking for something that allows for quick measurement (distance, area, perimeter) and annotation (leaders, clouds, sketching). Integration with a cloud storage service would be great as well. I'd prefer something with a one time fee rather than an...
Two very lucky bystanders (5 seconds from death). The one with the walker fell down while running and was injured. The fire department set a world record for response time though!
https://m.youtube.com/watch?v=6nD3tuXq42Q...
If you're going to to do a stunt to show that something is extremely durable, you might want to have a few more trial runs under your belt before failing (twice) at a major product unveiling...
Don't think this is quote the way you want an in-flight abort test to look.
Unverified video (NSFW - language) https://www.youtube.com/watch?time_continue=13&v=scz-fFZT-dI
https://arstechnica.com/science/2019/04/heres-what-we-know-and-what-we-dont-about-the-crew-dragon-accident/
It appears the 160' tall tower is only 23 years old.
Story:
https://www.jconline.com/story/news/2018/11/28/purdue-bell-tower-clock-crashes-ground/2137925002/
Video:
https://www.youtube.com/watch?v=3khIRCssx1g
A tunnel reinforced with pressure treated timbers that has not been inspected in over 20 years due to the extreme levels of radioactivity from the contaminated materials stored within has collapsed. Whodathunkdit [ponder]...
For projects on the order of 40 acres in area, or a few miles in length, we are finding some consultants are preparing topographic surveys for site design and construction using RTK GPS. Knowing that GPS is somewhat inherently less accurate, when asked we are being told that vertical accuracy...
and associated storm sewer using the Rational Method. The purpose of the analysis is to identify any deficiencies in the sizing of the storm sewer. The system consists of about 25 subcatchments/inlets and is quite dendritic in nature.
I understand the Rational Method for smaller, simpler...
Lay it out for me folks. I am relocating and I'll be interviewing with a small 501C3 non-profit soon. Yeah, that strikes me as a bit odd too, but it's in a field I am very interested in, so I am excited about learning more about the opportunity. It's a lateral move for me into the field of...
I'm looking for a pressure sustaining valve for use in a force main transporting effluent from a wastewater collection system. The wastewater contains low levels (20-30 mg/L) of low density suspended solids (in other words, "floaties").
The valve needs to maintain +/-15 PSI on the inlet while...
I am working on the design of a STEP collection system to serve 250 existing homes. The collection system will be discharging to a conventional gravity sewer system.
I expect that given it is septic tank effluent to begin with in a small diameter collection system that sulfide generation will...
Hello all,
I am primarily involved in wastewater treatment and collection system design, so this is more of an idle curiosity question for you folks in the hydrological end of things.
My understanding of stormwater projects is that the designs are based on "design storms" such as a 10 year, 24...
From Google's terms of service:
Is it ethically acceptable to even glance at project related imagery while considering conceptual aspects of a design? Does looking at the imagery for use in planning constitute "use"?. If so, I am guessing this portion of the TOS is commonly violated.
What...
Has anyone ever heard the argument made that ASTM D-1785 Schedule 40 PVC pipe is manufactured differently or is more brittle than ASTM D-2241 SDR-21 PVC pipe?
I design lower pressure (<125 PSI) STEP collection systems and small community wastewater treatment systems. I was recently told by the...
