Topography & Microclimate

Page 1

TOPOGRAPHY | MICROCLIMATE


CONTENTS

TOPOGRAPHY 2 | SHADOW STUDY 5 | WIND STUDY 13


TOPOGRAPHY



SLOPE

CLOROPLETH

CONTOUR

Height Above Sea Level (Metres)

Percentage Change in Slope 25% + 15-25% 8-15% 0-8%

DRAINAGE BASEMENT

FLOOD PLAIN

Low: 312.29

SHADOW

^ N

High: 348.471


SHADOW STUDY 15 STOREYS | 20 STOREYS | 25 STOREYS


^ N 12 PM

3 PM

DECEMBER 21 | WINTER SOLSTICE

9 AM


9 AM

12 PM

3 PM

SEPTEMBER 21 | FALL EQUINOX

^ N


9 AM

12 PM

3 PM

JUNE 21 | SUMMER SOLSCTICE

^ N


The shadow impact study illustrates the existing site conditions and potential impacts of high density developement through the placement of 15 (45 m), 20 (60 m) and 25 (75 m) storey buildings. The potential impacts are more apparent during the winter solstice at which time the shadows reach maximum extension. The present diagrams illustrate three adjacent building of heights ranging between 15 and 25 storeys. The diagram facilitates a study in which shadows are shown, at 60 minute incriments, on the day of September 21st between the times of 9:00 am and 4:00 pm. It is evident that a simple addition of five storeys in building height will produce a vast difference in shadow extension.



HOURLY TEMPERATURES  ALL VISABLE THERMAL ZONES

Monday, September 10 (253) - Toronto, Ontario; Canada

NOTE: Values shown are environment temperatures, not air temperatures.

C 40

W/m2 1.9k

30

1.4k

20

1.0k

10

0.5k

0

0

1

2

Outside Temperature

3

4

5

Direct Solar

6

7

8

9

Diffuse Solar

10

11

12

13

Wind Speed

14

15

16

17

Zone Temperature

18

19

20

21

22

23

0.0k



WIND STUDY


The following wind analysis illustrates average temperature and wind frequency in directional wind roses that present the data in monthly increments spanning a calendar year. The adjacent legends illustrate seperate aspects of the analysis. The radial graph reprsents direction and speed, while the gradients represent average temperature and frequency of the wind. Finally, the wind roses are alligned in orrder of month beginning with January and transitions from June to July at the break between pages as illustrated below.

JAN

FEB

MAR

JUL

AUG

SEP

APR

MAY

JUN

OCT

NOV

DEC

AVERAGE TEMPERATURE

FREQUENCY


g Winds

Prevailing Winds

o - Canada y - 31st January :00

Toronto - Ontario - Canada Date: 1st February - 28th February Time: 00:00 - 24:00

Temperatures

Prevailing Winds

Average Wind Temperatures 50 km/h

© ECOTECT v5

Average Wind Temperatures °C 45+

50 km/h

Toronto - Ontario - Canada Date: 1st March - 31st March Time: 00:00 - 24:00 © ECOTECT v5

40 35

40 km/h

30 20 15

35 30 20

30 km/h

15

5 <0

10 km/h

g Winds

Temperatures

o - Canada 30th April :00

^ N

Toronto - Ontario - Canada Date: 1st May - 31st May Time: 00:00 - 24:00 © ECOTECT v5

45+

50 km/h

35 30

5 <0

10 km/h

20 15 5 <0

Toronto - Ontario - Canada Date: 1st June - 30th June Time: 00:00 - 24:00 © ECOTECT v5

°C 45+

50 km/h

35 30

30 km/h

20 15

10 km/h

5 <0

35 30 25

30 km/h

10 20 km/h

°C 45+ 40

40 km/h

25

10

10 km/h

15 10

20 km/h

40 40 km/h

25

20 km/h

20

Average Wind Temperatures °C 40

30 km/h

30

Prevailing Winds

Average Wind Temperatures

40 km/h

<0

10 km/h

Prevailing Winds 50 km/h

5

35 25

30 km/h

10 20 km/h

°C 45+ 40

40 km/h

25

10 20 km/h

50 km/h

40 40 km/h

25 30 km/h

°C 45+

20 15 10

20 km/h

10 km/h

5 <0


Prevailing Winds

Prevailing Winds

Average Wind Temperatures 50 km/h

Average Wind Temperatures

Toronto - Ontario - Canada Date: 1st August - 31st August °C Time: 00:00 - 24:00 © ECOTECT v5

40 km/h

50 km/h

45+

40 35

40 km/h

25

20

20

30 km/h

10

5

5

20 km/h

<0

o - Canada r - 31st October :00

Toronto - Ontario - Canada Date: 1st November - 30th November Time: 00:00 - 24:00 © ECOTECT v5

45+

50 km/h

40 35 30 25 20 15

30 km/h

10 km/h

5 <0

10 km/h

30 25 20 15 10 5

20 km/h

<0

10 km/h

^ N

Toronto - Ontario - Canada Date: 1st December - 31st December Time: 00:00 - 24:00 © ECOTECT v5

°C 45+

50 km/h

35 30 20 15 5 <0

°C 45+ 40

40 km/h

35 30 25

30 km/h

10 20 km/h

35

30 km/h

25

10 20 km/h

40

40 40 km/h

45+

40 km/h

Average Wind Temperatures °C

°C

50 km/h

Prevailing Winds

Average Wind Temperatures

30 km/h

<0

10 km/h

Prevailing Winds

40 km/h

15

10

g Winds

50 km/h

30

25

10 km/h

Temperatures

°C 45+

35

15

20 km/h

© ECOTECT v5

40 30

30 km/h

Toronto - Ontario - Canada Date: 1st September - 30th September Time: 00:00 - 24:00

20 15 10

20 km/h

10 km/h

5 <0


Winds

Prevailing Winds

Hrs)

anada 1st January

Winds

Hrs)

anada April

Prevailing Winds

Wind Frequency (Hrs) 50 km/h

Toronto - Ontario - Canada Date: 1st February - 28th February Time: 00:00 - 24:00 © ECOTECT v5

40 km/h

Wind Frequency (Hrs) hrs 37+

Toronto - Ontario - Canada Date: 1st March - 31st March Time: 00:00 - 24:00 © ECOTECT v5

21

29

19

40 km/h

16

22

14

18

12

14

30 km/h

9

11 7

20 km/h

<3

10 km/h

^ N

© ECOTECT v5

30+

50 km/h

24 20

13 10 8 6

20 km/h

4 <2

10 km/h

15 12 6 <3

Toronto - Ontario - Canada Date: 1st June - 30th June Time: 00:00 - 24:00 © ECOTECT v5

hrs 29+

50 km/h

23 20

30 km/h

14 11

10 km/h

5 <2

33 29 25

30 km/h

8 20 km/h

hrs 42+ 37

40 km/h

17

9

10 km/h

16 12

30 km/h

26 40 km/h

18

20 km/h

17 40 km/h

Wind Frequency (Hrs) hrs 26

30 km/h

<2

hrs 20+

Prevailing Winds

Wind Frequency (Hrs)

40 km/h

4

20 km/h

10 km/h

Toronto - Ontario - Canada Date: 1st May - 31st May Time: 00:00 - 24:00

50 km/h

7

Prevailing Winds 50 km/h

hrs 24+

33 25

30 km/h

50 km/h

21 16 12

20 km/h

10 km/h

8 <4


Winds

Prevailing Winds

anada July

Toronto - Ontario - Canada Date: 1st August - 31st August Time: 00:00 - 24:00

Hrs)

50 km/h

© ECOTECT v5

Wind Frequency (Hrs) hrs 32+

50 km/h

Toronto - Ontario - Canada Date: 1st September - 30th September Time: 00:00 - 24:00 © ECOTECT v5

28 25

40 km/h

22 16

30 km/h

12

20 km/h

29 25

7

20 km/h

Prevailing Winds

Toronto - Ontario - Canada Date: 1st November - 30th November Time: 00:00 - 24:00

Toronto - Ontario - Canada Date: 1st December - 31st December Time: 00:00 - 24:00

© ECOTECT v5

hrs

50 km/h

24 21 15 12

10 km/h

6 <3

22 19 16

8

10 km/h

5 <2

^ N

© ECOTECT v5

hrs 28+

50 km/h

22 19 14 11 5 <2

hrs 34+ 30

40 km/h

27 23 20

30 km/h

8 20 km/h

11

20 km/h

16 30 km/h

14

30 km/h

25 40 km/h

9 20 km/h

25 40 km/h

Wind Frequency (Hrs)

31+

28+

10 km/h

Prevailing Winds

18 30 km/h

<3

10 km/h

27 40 km/h

14 11

Wind Frequency (Hrs) 50 km/h

18

30 km/h

6 <3

hrs

50 km/h

22

9

10 km/h

Hrs)

hrs 37+ 33

40 km/h

19

Winds

anada 1st October

Prevailing Winds

Wind Frequency (Hrs)

17 13 10

20 km/h

10 km/h

6 <3


CHALLENGES

AN ARRAY OF SLOPE LIMITATIONS FOR ROADS HIGH DENSITY DEVELOPEMENT CASTS LARGE SHADOWS HIGH FREQUENCY WINDS DURING WINTER MONTHS HIGHER SPEED OF WIND FROM WEST

OPPORTUNITIES

SLOPE AND ELEVATION CAN BE USED TO OFFSET HIGH DENSITIES RELATIVELY LOW SOLAR STRESS OFFERS GREATER OUTDOOR USE INTENSIFICATION EFFORTS NECESSARY VARYING TEMPERATURES INDUCE DIVERSITY OF FLORA


ANALYSIS

The extremely low densities, found thorughout this site, offer an exceptional oppurtunity for intensitfication. However, this opportunity must be approached with caution as a result of the major challenges presented by wind and shadow impacts. Therefore it is the strong recommendation of this report that thourough shadow and wind analyses be conducted on all proposed devleopements. Furthermore, a concentration of wind frequency from the west should impact the placement and position of open spaces and intensified vehicular corridors. Although topographic elements may be used to offest shadow impacts of higher density developements, it is recommended, based on these shadow studies, that 20 and 25 storey buildings are excessively high in the context of the current conditions. Developement should also be considered based on the floodplain, and a further analysis should be conducted based on those constraints because of the inherent challenges that those conditions present.


HRYNKIEWICZ | TAYLOR


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