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‘Threshold enclosure’ created by vertical surface or series of vertical elements in an urban plaza, represented by the ratio of height and distance, is given by an angle of _____ degrees (rounded off to one decimal place).
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- 26.5°
- 16.5°
- 13.5°
- None of the above
Correct Option: A
h/d ratio is 2 : 1 for the ‘Threshold of enclosure’,
| Thus, tan θ = | θ = 26.5° | |
| 2 |
Though as a thumb rule, one can remember a value of 27 to 30 deg vertical angle for threshold of enclosure, whereas angle for minimum enclosure is 18 deg, after which there is loss of enclosure.
