The site posed several challenges. Soil conditions varied significantly, from fragmented rock to saturated clay. A combination of strip and isolated pad foundations was used, and soil improvement strategies were implemented to address concerns. A movement joint was introduced down the building’ s centre to allow for differential settlement. Groundwater was found at shallow depths, prompting the early installation of Kaytech subsoil drainage to
FIRST FLOOR
GROUND FLOOR prevent saturated trenches from delaying the construction programme.
Given the site’ s sloped topography, boundary and retaining walls required careful planning to minimise the impact on adjacent residential properties. Some retaining walls exceeded 3m in height and were topped with boundary walls, creating a clean and consistent finish. In certain areas, total wall heights approached 5m between the natural ground and final levels.
Stormwater management was a critical component. The design incorporated Geberit Pluvia roof drainage, attenuation tanks, shaped parking levels, and underground pipes to manage the fully paved surface runoff. Sync’ s location directly above residential properties complicated downstream discharge, but proximity to a previous project allowed the team to connect into an existing system via a panhandle site, improving water flow and reducing the impact on neighbouring erven.
The structural system featured a concrete frame at ground and first floor levels, with loadbearing masonry and soft roofing above. At the time of design, steel prices were high, so the use of brick and timber was prioritised. Several large masonry panels were tied to offset concrete columns for stability and checked using rational design methods due to wind loads and limitations in SANS 10164, which did not fully address the building’ s unique geometry.
The rooftop concrete slab was designed to support congregational loads, as it also functions as a braai and entertainment area, further complicating the load transfer system.
One standout feature is the suspended bridge linking the building’ s two wings. Designed using steel side beams and a lightweight timber subframe, the bridge includes sleek details like a reverse tread suspension rod that allows precise levelling while maintaining clean connections to the concrete soffit.
The adjacent staircase is another unique element. The central flight is the only part that touches the ground, while two side flights connect to the main wings via a central landing. This“ hammock-like” structure appears to float, drawing attention to its geometry and reinforcing its structural integrity.
Pedestrian and Vehicular Access / Parking Circulation within and around the site was a critical consideration. Pedestrian access is prioritised, with the internal street acting as a safe and engaging promenade at ground level. This design decision reinforces the building’ s human scale and anchors its role as a place for people.
Vehicular movement is managed with efficiency and clarity. A single entry point and a single exit point create a logical flow around the rear
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