Latest Posts

New cannabis bill could see construction taking the high road

The proposed amendments to the Cannabis for Private Purposes bill that seeks to further decriminalise cannabis usage and legalise South…

Read More..

Luxury vs ultra-luxury – What’s the difference?

BESPOKE LIFESTYLE: There are a number of key factors that distinguish ultra-luxury homes form the rest, not least that they’re…

Read More..

Creating sustainable growth and reducing poverty through structural transformation

Urban development domains ACRC’s analytical framework uses the concept of urban development domains to transcend both sectoral and traditional systems-based…

Read More..

A root cause of flooding in Accra: developers clogging up the city’s wetlands

Christopher Gordon, University of Ghana Ghana has six designated Ramsar sites. These are wetlands designated under the criteria of the…

Read More..

Nigerian property crime could be reduced if neighbourhoods were better designed

Adewumi Badiora, Olabisi Onabanjo University Nigeria has a very high crime rate. The Global Peace Index ranked it the world’s…

Read More..

Inner cities are growth engines attracting young homebuyers

Inner city living is boosting the city residential property market and driving urban rejuvenation Inner cities. Love them or hate…

Read More..

Kenya’s push for affordable housing is creating opportunities despite barriers

Raphael M. Kieti, University of Nairobi; Robert W. Rukwaro, University of Nairobi, and Washington H.A. Olima, University of Nairobi In…

Read More..

Heron IVC: Walking the green talk

Waterfall is closing the loop on waste Waterfall prioritises sustainability and responsible environmental stewardship as a strategic imperative, keeping the…

Read More..

21st Aug 2022

Architect Africa Online

Africa's Leading Architecture Aggregator

Zutari co-creates innovative structural solutions for iconic 16 on Bree

At 120 m and 36 storeys, 16 on Bree is the tallest residential and second-tallest mixed-use development in Cape Town in the last 20 years. FWJK Developments conceived the project as an iconic high-rise to meet the demand in the market for quality residential apartments.

A key requirement for the City of Cape Town’s development approval was to retain the 12-m-high existing heritage façade. In order to retain the historic façade at ground level of this iconic development, innovative structural solutions to fit within the project budget and timeframe were co-created by Zutari in conjunction with its client.

A steel bracing system with large counterweights on the street side stabilised the façade wall, allowing uninterrupted construction of the building while the wall was kept safely in place. Once the parking levels behind the wall were built, the wall was tied into the concrete floors using movement-compensating connections, allowing the steel bracing to be removed. Retaining the heritage façade creates an eye-level experience that blends in seamlessly with the surrounding area, as conceptualised by FWJK.

To be able to accommodate the required number of parking spaces within the building’s footprint, Zutari designed a compressed central lift and stair core, an alternative to the decentralised lift and stair core on traditional tall buildings. However, the compressed central lift and stair core meant that the lateral structural stability in the shorter direction of the building was compromised.

To reduce the lateral drift under wind load, Zutari contemplated the use of outrigger walls which stiffen the core by connecting it to enlarged perimeter columns on the upper levels of the building – resulting in a ‘push-pull’ effect between the core and the enlarged columns – greatly enhancing the lever-arm of the force-resisting mechanism, explains Nick Bester, Building Structures Associate at Zutari.

The original apartment layout had a passage around the lift core that would have cut off the critical connection of the outrigger walls to the core, thereby nullifying the beneficial effect. The architect and fire engineer, in collaboration with Zutari, managed to re-configure the access walkway so that some apartments are directly entered off the lift lobby, thereby freeing up sellable area, as well as allowing uninterrupted connection between outriggers and lift shafts.

The architect effectively used the enlarged perimeter columns as an aesthetic feature, which is clearly visible on the northern façade. “This was a rewarding collaborative exercise, resulting in a structural solution that also benefits the floor plate layout and the aesthetics of the building,” comments Jaco De Villiers, Building Structures Design Director and Expertise Leader at Zutari.

A Revit BIM model was used, with the advanced structural analysis and design workflow linked to the finite element model for efficiency and optimisation. This enabled the design team to nominate parameters for evaluation, define the parameter range, specify the design constraints and analyse the results of each parameter variation. The studies optimised the number and position of the outriggers to mitigate the effects of stabilisation and vibration from the central lift and stair core option.

According to FWJK Developments, the main attraction of 16 on Bree is its height and location, offering residents unrivalled views of Cape Town’s natural beauty, while still being in walking distance to the V&A Waterfront and the central business district.

Professional team

  • Developer: FWJK Developments
  • Principal Agent: Orion Project Managers
  • Architect & Quantity Surveyor: FWJK
  • Civil and Structural engineer: Zutari
  • Wet services engineer, fire engineer and mechanical engineer: Eckon
  • Electrical engineer: Converge Consulting
  • Main contractor: Concor Western Cape

The post Zutari co-creates innovative structural solutions for iconic 16 on Bree appeared first on Everything Property.

Syndicated content from Everything Property


If you find this website useful please spread the word.

Follow by Email