Posts Tagged ‘Civil Engineers’

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TEAM BUILDING: Anacostia River Boat Tour

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On July 26, the Nspiregreen team went on the Anacostia Watershed Society’s Anacostia Boat Tour as part of this quarter’s team building. This trip gave us a chance to see first-hand and learn more about the efforts being implemented to improve the health of the river. This was a great experience especially since we have been working on some projects related to the Anacostia River’s cleanup efforts.

The Anacostia River watershed is home to 43 species of fish, some 200 species of birds, and more than 800,000 people. The river flows through Montgomery and Prince George’s Counties in Maryland and past the Capitol Building in the District. The watershed is approximately 176 square miles and around 25% of its land lies in the District of Columbia. (Source: DOEE, February 15, 2018, EPA)

The Anacostia has been polluted by litter, raw sewage, stormwater runoff, and industrial waste since the 19th Century. However, in the past two decades efforts have been implemented to turn “The Forgotten River” into a “fishable and swimmable” water body as defined by the Clean Water Act. For example, the recently opened DC Water tunnel between the RFK Stadium and the Blue Plains Wastewater Treatment Plant is preventing millions of gallons of wastewater from entering the river, thus reducing the levels of bacteria. The District’s Department of Energy and Environment (DOEE) launched the “For a Cleaner Anacostia River” initiative aimed to clean the river sediments contaminated with industrial toxins including polychlorinated biphenyl’s (PCBs) and polycyclic aromatic hydrocarbon (PAHs).

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Tour Highlights

Below are some highlights of our trip!

Rain, Rain, Rain…

There was a thunderstorm the night before the tour. In fact, this past July was one of the wettest Julys on record! The day we went, the river was yellow-colored and full of broken branches and litter. However, boats were out removing these items. Here is a picture of one of DC Water’s boats cleaning up litter.skimmerboat
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Due to the high levels of precipitation, the river’s water level was really high. For this reason, we were not able to go under the Benning Rd bridge. The water was almost hitting the rail bridge! I heard the area north of this bridge has beautiful scenery and lots of wildlife. We will come back again!

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The River is Improving

The water condition is getting better; wildlife and the levels of subaquatic vegetation have increased. The tour guide also told us that they are testing the use of mussels to clean the water. Fun fact an adult mussel can naturally filter about 10 gallons of water a day!

Bird Nest

 

You Can Also Tour the Anacostia River!

If you want to tour the Anacostia, the Anacostia Watershed Society and the Anacostia Riverkeeper offer guided motorboat and canoe tours free of charge. These tours are funded by the District’s disposable bag fee program.  Tours leave from various locations.

What to bring:

  • Reusable water bottle filled with water (plastic water bottles are not allowed on the boat for environmental protection)
  • Sunscreen
  • Hat and sunglasses

 

To learn more, visit https://doee.dc.gov/service/anacostia-river-explorers

 

Mei Fang, is an urban planner with a strong passion for urban and landscape design, she also enjoys looking for the variety culture inside of the city.

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The Future of Transportation Part II

As an alumnus and a member of the Advisory Council for the Civil Engineering Department at Cornell University, I was asked to lead a workshop during the summer CATALYST Academy. The purpose of the summer program was to bring high school students from underrepresented backgrounds to Cornell to spark an interest in engineering and the university. My workshop entitled “Transportation: How you can be part of the Future” included a 30-minute presentation and a 60-minute group activity. Part I was the summary of the presentation portion of my workshop. 

 

Group Activity

I created a 60-minute group activity to give the students a high-level experience designing the transportation for the future. For the assignment, they had to solve a transportation problem for a specific type of community by developing at least two goals and using technology, while meeting the needs of at least two social equity communities. How hard could that be?

One aspect of the activity was to see the students work in teams. My workshop was on the first day of the program, so the students had just met each other. I divided them into six groups at random. The amazing part was watching them interact with each other and more importantly how they made sure everyone participated. Although I only asked for one person to present for the group, each group chose to present as a team.

The Ideas

The six groups and immediately started thinking and creating. Here’s what the groups created:

  • Group 1: Their community setting was space. Their goals were to establish connectivity between earth and mars, and create mining jobs. Their technology was autonomous spaceships. Their social equity groups were homeless and historically underserved communities by providing jobs.
  • Group 2: They selected a suburban setting, because more generations are living together and cities already have public transportation. Their two goals were to establish connectivity and the reduce air emissions. Their technology was autonomous vehicles that have Wi-Fi. Their social equity groups were seniors, persons with disabilities, and single parents.
  • Group 3: This group designed an autonomous bus with a mobile application to improve safety and reduce congestion in historically underserved communities and seniors. Their community setting was urban such as West Palm Beach Florida.
  • Group 4: They wanted to build a hyper (beyond just high) speed train between San Francisco and Los Angeles to move people and goods within 30 minutes. The train would be autonomous, have free Wi-Fi on board, and tickets would be electronic and affordable. Their social equity group was historically underserved communities and persons with disabilities. Without being prompted they also discussed the need to have housing policies so that people won’t be displaced.
  • Group 5: Similar to group 4, they focused on megaregional travel. Their goals were to maximize moving people and vehicles faster. They selected high speed rate that is autonomous, has free Wi-Fi, and uses applications to track travel. They would focus on single parents and historically underserved communities by keeping the new system affordable.
  • Group 6: They created a SkyHub, which is a mobile transportation system that connects people via the air. Their goals were to reclaim street space for people and reducing congestion by moving transportation vertically. To ensure equity they have at least once stop in every neighborhood.

Veronica O. Davis, PE is a transportation guru who uses her knowledge to spark progressive social change. As Co-owner and Principal of Nspiregreen, she is also responsible for the management of the major urban planning functions such as transportation planning, policy development, master planning, sustainability analysis, and long range planning. In July 2012, Veronica was recognized as a Champion of Change by the White House for her professional accomplishments and community advocacy, which includes co-founding Black Women Bike.

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5 Ways to Help Traffic

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Source: CNN

In the midst of Tropical Storm Harvey, our hearts and thoughts go out to the families whom are affected by this storm. Due to its flat topography, Houston is well-known for its susceptibility for flooding. Many people woke up to find they were trapped inside their flooded homes and waited to be rescued. We wish the affected families the best of luck in their journey to recovery.
 
I have never been to Houston, but I have heard many stories about Houston’s traffic and planning. In this blog, I will share what I have learned from my perspective and my extended knowledge of transportation.
 
Houston is known for its sprawl. People tend to complain about the traffic because they drive to most of their destinations. The traffic is usually at a standstill.
 
Here is a video talking about the Houston’s freeway system.
 


 
American Highway Users Alliance published a statement that the Katy freeway in Houston was the second most congested road in America. Drivers spend a combined 25.4 million hours every year sitting in traffic on that road (which is 36 lifetimes worth). That is why the government decided to spend $2.8 billion to expand the road to 28 lanes, making it the widest highway in the world. Many people thought that this extra capacity would surely solve the problem. However, between 2011 and 2014, travel time on Katy freeway went up 55% (Meaning that driving between downtown Houston and Katyland, a 28-minute drive without traffic, takes an average of 64 mins during afternoon rush hour.)

Katy freeway (I-10) in Houston, Tx

Sounds unbelievable, right?

The video explains that the road expanding solution violated the fundamental law of roads: MORE LANES=MORE TRAFFIC. When the road got extended, more people used it, causing it to reach capacity again.

Here are some solutions for traffic as discussed in the video:
 

  1. Take public transit

This is always the long-term way to solve traffic. Taking the bus and light rail can definitely reduce the daily amount of traffic and is also environmentally friendly.

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Source: http://www.abrahamwatkins.com/blog/images/METRO_Light_Rail3.jpg

  1. Ramp meters

Meters on entrance and exit ramps can control the amount flow of traffic entering the highway. It slows down the number of cars merging onto the highway, ensuring traffic stays at its most efficient speed.

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Source: https://ops.fhwa.dot.gov/publications/fhwahop14020/sec1.htm

  1. Tolls

Tolls are a direct way to reduce traffic. In New York, which has high roadway tolls, people often prefer to take the train or subway into Manhattan instead of driving.

These fees can increase the overall cost of driving to a level where some people will decide the benefits of driving are not high enough and will choose alternative means of transportation.2005-03-13_15-53-32

  1. Roundabouts

Roundabouts decrease some of the worst type of collisions and still carry the same amount of traffic, according to study. Traffic tends to be smooth and consistent, albeit having a slower flow.

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     Source: https://i.ytimg.com/vi/XcK8sjzTlWI/maxresdefault.jpg

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Source: https://www.wsdot.wa.gov/Safety/roundabouts/benefits.htm

  1. Diverging diamond interchange (DDI), also called double crossover diamond interchange (DCD)
  • Fewer conflict points (14 for DDI, 26 for conventional)
  • Conflict points spread out throughout interchange
  • Better sight distance at turns
  • Virtually no driver confusion (FHWA study and new DDI observations in Springfield, MO)
  • Traffic calming features when desired
  • Wrong way entry to ramps extremely difficult
  • Shorter pedestrian crossings

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Source: http://www.divergingdiamond.com/trafficmovements.html

In the DC metro area, commuters also face heavy traffic during the rush hours, especially in downtown DC, I-66, I-495, and I-395. After all, traffic is an issue for every major metropolitan area. We all contribute to solve this problem. I highly recommend everyone to take public transit like Metrorail, Metrobus, or the Capital Bikeshare.

 

Mei Fang, is an urban planner with a strong passion in urban and landscape design, she also enjoy looking for the variety culture inside of the city.





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