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ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT...

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ANNEXURE V HERITAGE IMPACT ASSESSMENT REPORT FOR THE ESTABLISHMENT OF AN ARRIVAL TRAFFIC CIRCLE AT CORNER NIND/BEIT STREETS AND CONSTRUCTION OF A SKY BRIDGE ACROSS BEIT STREET, DOORNFONTEIN CAMPUS BASIC VISUAL IMPACT ASSESSMENT 1. VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows: Short range view refers to views from 50m distance or less from the site of the proposed development. Long range view refers to views from more than 50m distance. Several arbitrary positions were chosen during a 360º walking survey. It will be noticed that more viewpoints were selected for the sky bridge than the arrival square because of its vertical scale, at 6.2m height above the ground. The varying degrees of visual exposure are measured on a negative scale of High – high impact, Medium - medium impact, Low – low impact, and 0 – no impact, i.e. alterations and introduced structures are not visible from a given position. VE means Visual Exposure. 1
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Page 1: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

ANNEXURE V

HERITAGE IMPACT ASSESSMENT REPORT FOR THE ESTABLISHMENT OF AN ARRIVAL TRAFFIC CIRCLE AT CORNER NIND/BEIT STREETS AND CONSTRUCTION OF A SKY BRIDGE ACROSS BEIT STREET, DOORNFONTEIN CAMPUS

BASIC VISUAL IMPACT ASSESSMENT

1. VISUAL IMPACT ASSESSMENT PARAMETERSVisual exposure (VE) has been assessed using a ranking system as follows:

Short range view refers to views from 50m distance or less from the site of the proposed

development. Long range view refers to views from more than 50m distance. Several

arbitrary positions were chosen during a 360º walking survey. It will be noticed that more

viewpoints were selected for the sky bridge than the arrival square because of its

vertical scale, at 6.2m height above the ground. The varying degrees of visual exposure

are measured on a negative scale of

High – high impact,

Medium - medium impact,

Low – low impact, and

0 – no impact, i.e. alterations and introduced structures are not visible from a given

position.

VE means Visual Exposure.

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Page 2: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

2.1. SHORT RANGE VIEWS IN RELATION TO THE PROPOSED POSITION OF THE PEDESTRIAN SKY BRIDGE

Fig. 1. 4th floor, John Orr, VE = High.Fig. 2. Corner Beit/Height facing John Orr, VE= High.

Fig. 3. Corner Beit/Nind Sts facing Beit, VE= Medium. Fig. 4. Corner Beit/Height facing Beit,

VE = High.

2.2. LONG RANGE VIEWS IN RELATION TO THE PROPOSED POSITION OF THE PEDESTRIAN SKY BRIDGE

Fig.5. Corner Beit/Buxton, VE=Medium. Fig.6. Corner Beit/Buxton, the sky bridge will resonate with the arch supporting the roof of Ellis Park Stadium .

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Page 3: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

Fig. 7. 2nd Floor, Railway Station, corner Buxton/Currey, VE=0

Fig.8. Corner Height/Currey, VE=Low (due to plantings)

Fig.9. Top of building at Corner Height/Currey, VE=Low (due to plantings).

Fig.9. Corner Siemert/Pearse, VE=0.

Fig.11. Corner Beit/Siemert, VE=Low. Fig. 12. Joe Slovo St, north side of John Orr, VE=0.

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Page 4: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

Fig. 13. Saratoga Av, north side of John Orr, VE=0.

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Page 5: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

3.1. SHORT RANGE VIEWS IN RELATION TO THE PROPOSED LOCATION OF THE ARRIVAL CENTRE

Fig. 14. Corner Beit/Nind, VE=High. Fig.15. 4th Floor John Orr, VE=High.

3.2. LONG RANGE VIEWS IN RELATION TO THE PROPOSED LOCATION OF THE ARRIVAL CENTRE

Fig.16. Corner Beit/Buxton, VE=0. Fig.17. Corner Nind/Currey, VE= Low.

Fig. 18. Corner Beit/Siemert, VE=Low. Fig. 19. Joe Slovo St, north side of John Orr, VE=0.

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Page 6: ANNEXURE V BASIC VISUAL IMPACT … · Web viewBASIC VISUAL IMPACT ASSESSMENT VISUAL IMPACT ASSESSMENT PARAMETERS Visual exposure (VE) has been assessed using a ranking system as follows:

4. SCORES

PROPOSED STRUCTURE

No of view points

VISUAL EXPOSURE

High Medium Low ZeroSky Bridge, Short Range 4 3 1 - -Sky Bridge, Long Range 8 - 1 3 4Arrival Square, Short Range

2 2 - - -

Arrival Square, Long Range

4 - - 2 2

5. FINDINGSThe sky bridge will be highly visible at short distance of less than 50 m. At longer

distances it will have a visibility magnitude ranging from medium (1 score), through

low (3 scores) to zero (4 scores). The arrival square will also be highly visible at

short range views of less than 50 m. At longer distances low visibility magnitude

ranging from medium (1 score), through low (2 scores) to zero (2 scores) have been

recorded.

6. PROPOSAL FOR MITIGATIONThis study shows that in both cases long-distance exposure is relatively minimal.

Potential adverse impacts are therefore limited to short ranges views for which

mitigation measures become necessary. Further tree planting in the affected area

will minimize exposure of the sky bridge. The application of sympathetic paints will

also help to minimize visual impacts.

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