ABPL30051: Morphological Mapping by Derrick Lim

Page 1

BUILDING FOOTPRINTS

WATER ROUTES

AGE OF DRAINAGE

TOPOGRAPHY

SLOPE

40m 35m

30

m

35m

30

m

25

m

20

m

15m

Legend:

Water flow

Building Footprints

0

Age of drainage pipes (Year Built):

Legend:

100

200m

1850 1901 1951 2000

Source: City of Melbourne, 2014 retrieved from data.vic.gov.au

-

Forum

40m 35m 30m 25m 20m 15m

1900 1950 2000 2015

Source: City of Melbourne, 2018 retrieved from data.vic.gov.au

Scots’ Church Chinatown

State Library of Victoria

Steepness of Slope (in approximate degrees):

Elevation:

0 - 0.3

| Level

0.3 - 1.1 | Nearly level 1.1 - 3

| Very gentle slope

3 -5

| Gentle slope

5.0 - 8.5

| Moderate slope

Argyle Square

Old Melbourne Gaol

Federation Square

Water phenomenon of urban morphology

Assemblage urban elements: Building footprints

The built environment alters the natural flow of rainwater as shown in the Russell Street Transect, demonstrating its adaptation to urban morphology. As one stream goes into another, the grade rises, meaning that the higher the grade the more intense the flow will be. This is illustrated in the “Grade of Water Flow” map.

Contour lines (interval of 5m) Drainpipes

Grade of water flow: Grade 1

Furthermore, topology and slope gradient are factors that highly influence the direction and flow of rainwater, forcing it to flow from the north-eastern peak of the city down the slope towards the Yarra river.

Where are the most impermeable surfaces?

Grade 2 Grade 3 Grade 4

Steepness of Slope (in approximate degrees):

This exercise has identified the transect’s pervious and impervious surfaces by analyzing the existing surrounding stormwater drainage network. As a result, the city contains a more integrated drainage network as opposed to areas outside the city.

0 - 0.3

| Level

0.3 - 1.1

| Nearly level

1.1 - 3

| Very gentle slope

3 -5

| Gentle slope

5.0 - 8.5

| Moderate slope

This is significant since the increased built form affects the perviousness of the surface, which needs better drainage system to drain rainwater. However, the transect’s top areas of open green spaces, such as Lincoln Square and Argyle Square, act as a catchment to compensate the surrounding area’s impermeability. Therefore, a less integrated drainage network is needed and by mapping this, we are able to plan for a better water management in the transect.

Russell Street Transect

Morphological Mapping ABPL30051 - Semester 1, 2018

Derrick Lim Wei Yang 860296

0

100

200m

ADAPTATION


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