Examples of prior ACE Team 8's submission boards & prototypes for ACE competition entry were on display at our Jan 25, 2016 meeting.

Brassica Technical Garage / parking of the future

Sandpiper Playground, Far Rockaway, NY

No Meeting this Monday! (Happy MLK Day)

Hello Team8!

We are not meeting this monday due to the Martin Luther King Holiday.

Our next meeting is January 25 at DDC at 4pm.

Have a great weekend!

Michael

Photos from one of our brainstorming sessions / Jan 4th, 2016

Precedence- Examining Flood Mitigation Strategies

Netherlands- The Maeslantkering, the largest storm surge barrier in the world, is located on the west coast of The Netherlands and closes automatically when the seas rise with a storm

1. Storm Surge Barrier- A large dam, gate, or lock — or a series of them — that manages the water that flows in and out.

    This structure is used in smaller, strategic parts of the river delta that are somewhat enclosed . The barrier could be fixed in place and allow managed flow through a portal for water exchange, tidal function and navigation. Alternatively, it could be temporarily deployed just to head off the worst flooding during a storm surge.

  2. Coastal Armoring-  Linear protection, such as levees and seawalls, that fix the shoreline in its current place.

Advantages- It is one of the oldest and behaves predictably when used with other structures to protect against rising water. It can also be redesigned to accommodate housing, or recreational areas.

Disadvantages- It is a short term solution, and that can only be built to protect against a certain storm size, or rise in sea level. It requires annual maintenance, and regular monitoring to ensure its efficacy. Moreover, it can be untrustworthy at time, most notably with Hurricane Katrina, when is coastal armoring was broken, and caused the break in the levees.

3. Elevated Development- raising the height of land or existing development and protecting it with coastal armoring.

Advantages- allows structures to be build in vulnerable shoreline areas, with a low risk of flooding.

Disadvantage- it is a short-term strategy, elevated development unless situated on stilts directly over water, will eventually need protection from flood waters if the water, if the waters actually reach it

4. Floating Development- Structures that float on the surface of the water, or may be floated occasionally during a flood, making them largely invulnerable to changing tides. Floating homes can be mooed onto the shore, or anchored onto the seafloor.

Advantages- Floating development manages well within high tides and times of seismic activity.

Disadvantages- Floating developments may work well only in protected areas

. they also don’t work well in places subject to wind wave action from storms, such as ocean coastlines.

http://www.spur.org/publications/article/2009-11-01/strategies-managing-sea-level-rise

Here are some of the points my brother and I compiled about building materials in Islambag/Dhaka:

• Pucca houses are strong houses. They are made up of wood, bricks, cement, iron rods and steel. Flats and bungalows are pucca houses. Such houses are called permanent houses.
• Kutcha houses are made up of wood, mud, straw and dry leaves. A hut is a kutcha house. Some people live at one place for a very short time. They build houses that can be moved from one place to another. Such houses are called temporary houses.
• Kutcha literally means raw or unripe
• Very narrow
• The city has many terracotta and clay structures (temples, mosques, etc.)
• The origin of the bungalow has its roots in the historical Province of Bengal.[4] The term baṅgalo, meaning "Bengali" and used elliptically for a "house in the Bengal style".[5] Such houses were traditionally small, only one story and detached, and had a wide veranda were adapted by the British, who used them as houses for colonial administrators in summer retreats in the Himalayas and in compounds outside Indian cities.[6] The Bungalow style houses are still very popular in the rural Bengal. In the rural areas of Bangladesh, it is often called Bangla Ghar (Bengali Style House). The main construction material used in modern time is corrugated steel sheets. Previously they had been constructed from wood, bamboo and a kind of straw called Khar. Khar was used in the roof of the Bungalow house and kept the house cold during hot summer days. Another roofing material for Bungalow houses has been red clay tiles.

 

http://news.nationalgeographic.com/news/2013/13/130425-bangladesh-dhaka-building-collapse-world/

• this link is to an article about a factory near Dhaka that collapsed possibly because of poor construction and foundation

 

• metal siding (very rusty) , concrete, NO glass, brick, tarps
• concrete without proper footing- piles
• in the more “industrial” area, there are 4 story buildings with both stores and housing
• garbage and waste piled on the streets
• why so unused bricks piled on the streets?- possibly a brick manufacturer close by
   

 

 

 

CONSIDERATIONS

CONSIDERATIONS

• Floating Structures
• Raising building elevation (stilts)
• Reservoirs
• Sewage treatment
• Prioritize services/ building types to fortify
• Prototype Housing

Information on Bangladesh History

Located Northern Coast of Bay of Bengal. Surrounded by India, Capital: Dhaka.

Low-lying riverline (situated on a river) Due to tropical monsoons climate (June to Sept) they experience heavy rain and floods.

They gained independence from Pakistan in 1971

Population: 166280712 approx

And it's capital Dhaka with a population of 15.391 million

Official language is Bangla

Literary rate of 57%

Currency: taka

Religion- 89% Muslim, 9.6% Hindu, .9% other

Econ- Unemployment rate 5%

Industries- cotton textiles, tea processing, garments, jute (golden fiber plant)

Agriculture- rice, tea, jute, wheat beef

Exports: garments, leather, seafood, frozen foods, jute and goods

Transportation: 95% of highways are unpaved

Waterways 8370 km (3060 km are main cargo routes)

Labor- 78 million exported to other surrounding countries 47% agriculture, 13% industry, 40% services

GDP: 1800 per person annually/

Preventive Structures

Flood-gates, an adjustable gate that  can monitor the flow of water of a river, reservoir, or stream

Breakwater Structure-are situated some distance away from the shoreline, to lessen the force of waves.

Seawall- which has a re curved crest wall that helps to repel incoming waves/water. Serves the dual purpose of creating an area for people to congregate and have an overview of the shoreline.

- Traditional dams, that will help control flooding.

Dhaka Land Use (Notes)

Land Use

Meghna River

Population of 11 million below poverty line (16%)
Unemployment 19%

Dhaka has the largest economy in Bangladesh
Average Annual Income $4,822

Nestle
GSK- drug comp.
HSBC bank
British American Tobacco Company

International trade, textiles, pharmachemical + financial

Exports
$10 billion

Food Industry

Ganges Delta
75% of Bangladesh is less than 10 meters above sea level
Reinforced Concrete walls is an option

Other Factors that contribute to flood:
-Monsoon Season during summer
-Himalayas Melting

5,000 people killed
7 million homes destroyed

Small Floods sustain agricultural industry

Flash flood
monsoon
Normal--> Meghna, Ganges
Rain Fed

13.1 million people in 1,300 km^2

Buriganga River--> South
Balu + Shitalaklaya--> East
Tongi Canal--> North
Turag River--> West

20 Km^2 of land are 8 meters
75 Km^2 between 6-8 meters
170 Km^2 below 6 meters

3.1 million live in slums--> on private land 70%
   ^                                  --> on government land 26%
(37%)

Building Types:
Multi story- brick & tin
Single Story- tin & Kutcha (brick, clay, and bamboo)

Here's a link to a map of the slum areas in Dhaka:

http://www.ciesin.org/confluence/download/attachments/34308102/Hackenbroch_presentation_Dhaka.pdf?version=1


Here's an image of the slum areas:

Interesting article Team 4

http://mobile.nytimes.com/2014/03/29/world/asia/facing-rising-seas-bangladesh-confronts-the-consequences-of-climate-change.html?referer=

Resiliency Links

100 Resilient Cities

 United Nations Office for Disaster Risk Reduction Publications