Urban drainage

Question 1

Urban hydrology

Answer 1

Designed to shed water quickly, sloping roots, smooth surfaces, rounded guttering, rapid movement of water, impermeable surfaces, Prevent precipitation from infiltration

Question 2

Sustainable urban drainage systems SUDS

Answer 2

Manage rainfall by using natural processes in the landscape to reduce flooding control flooding and provide Amenity for the community

Question 3

Bioswale

Answer 3

Rain garden is a slope to retention area designed to capture and convey water while allowing it to infiltrate the ground slowly, some of the water is soaked up by vegetation thereby reducing flooding

Question 4

Cheongyeecheon river

Answer 4

South Korea, Seoul, population = 24.5 million, over crowded, built over river 1918(started project), 5.8 river restored river, areas + green space, Mega city, greenest mega city in world, heart of the city, post war economic expansion, 44% population increase, 169,,000 cars pass over old every day, structural failiure needed to regenerate, repair or demolish and restore river, 1 billion $, recreational places, cultural, historical, investment, music, businesses, restoring, regenerating, reduction in urban heat island effect, resilience against flooding biodiversity increase 639% increase.

Question 5

Reasons for and aims of the project

Answer 5

Importance of functioning ecosystems, health, sustainability, social responsibility, management needed to happen – repair or remove, improve connectivity between north and south side of city, house 100,000 small businesses, centre of Seoul, 5.8 km

Question 6

Work carried out

Answer 6

22 bridges – 12 pedestrian – 10 cars and pedestrian, rapid boss lanes, loading and unloading systems, 40 cm depth of river restored, water treated so not polluted, central historical zone – public availability, green space

Question 7

Attitudes and contributions of parties

Answer 7

restoring the river biding by major, importance to make priority, removing highway, increase traffic congestion and chaos, local businesses saw project as threat, to neighbourhood, provide extra parking, reduce parking fees, improve loading and unloading bays/systems

Question 8

Evaluation of project

Answer 8

Restoration popular with residence and visitors and because of this has become a tourist attraction, 18.1 visitors by the end of 2008, museum, economic sustainability, traffic – speed slowed throughout the city by 12.3%, subway and bus usage increase, environment – stream habitat plants animal species reappeared,