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William Dalrymple (historian)
| 11 Diagonal Street | |
|---|---|
 A view of the building from street level | |
 | |
| General information | |
| Status | Completed |
| Type | Multi use, Office |
| Location | Johannesburg, South Africa |
| Coordinates | 26°12′15″S 28°2′9″E / 26.20417°S 28.03583°E |
| Construction started | 1981 |
| Completed | 1983 |
| Opening | 1984 |
| Cost | R65 million |
| Owner | Rebosis Property Fund [1] |
| Height | |
| Antenna spire | 80 m (260 ft) |
| Roof | 75 m (246 ft) |
| Top floor | 75 m (246 ft) |
| Technical details | |
| Floor count | 20 |
| Floor area | 20,000 m2 (220,000 sq ft) |
| Lifts/elevators | 6 |
| Design and construction | |
| Architect(s) | Helmut Jahn |
11 Diagonal Street (also known as the diamond building[2]) is an iconic office tower in downtown Johannesburg, South Africa, that was built by Anglo American Property Services.[3] The 22 floor building is the 15th tallest in the city[4] and it was conceptualized in 1981 and excavations began in December that year. Construction ended in 1983 and the building was tenanted in 1984.[5] The building is designed to look like a diamond as it reflects different views of the Central Business District from each angle of the building.[6] Apart from its unique exterior, the structure was built with concrete instead of steel, demonstrating that concrete could be used instead of steel in both speed and cost.[7]
The building's architect was Helmut Jahn [8] and is featured on the Level 42 album cover The Very Best of Level 42.
Current Use
The building was used by the department of Development Planning & Local Government.[9] It is currently occupied by The Gauteng Department of Infrastructure Development.[10]
References
- ^ https://www.rebosis.co.za/property-item/11-diagonal-street/
- ^ "The Diamond Building – Johannesburg, South Africa". AEWORLDMAP.COM (3,300+ posts). 8 September 2015. Retrieved 6 April 2025.
- ^ 11 Diagonal Street (1983) Published by Anglo American Property Services (Pty), Ltd., Johannesburg
- ^ "The Diamond Building – Johannesburg, South Africa". AEWORLDMAP.COM (3,300+ posts). 8 September 2015. Retrieved 19 February 2025.
- ^ "Eleven diagonal street concrete won the day". Civil Engineering = Siviele Ingenieurswese. 1983 (1): 11–13. January 1983. doi:10.10520/AJA10212019_16842 (inactive 1 February 2025).
{{cite journal}}: CS1 maint: DOI inactive as of February 2025 (link) - ^ "11 Diagonal Street, Johannesburg, South Africa". Emporis. Archived from the original on 8 February 2007.
- ^ "Eleven diagonal street concrete won the day". Civil Engineering = Siviele Ingenieurswese. 1983 (1): 11–13. January 1983. doi:10.10520/AJA10212019_16842 (inactive 1 February 2025).
{{cite journal}}: CS1 maint: DOI inactive as of February 2025 (link) - ^ "Jahn". Jahn. Retrieved 19 February 2025.
- ^ "Diagonal Street, with Neil Fraser". joburg.org.za. Archived from the original on 26 October 2014. Retrieved 26 October 2014.
- ^ Lebohang. "11 Diagonal Street". Rebosis. Retrieved 19 February 2025.
| Authority control databases: Geographic |
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