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The prototype bollards' temporary home in the RPP office garden.
The bollards were cast by Durham Foundry in Sheffield, South Yorkshire.
The pattern equipment used to form the mould in the sand-casting process.
The Merchant Square hallmark.
A sustained cycle of wetting and drying accelerates the rusting process producing first the orange iron oxide before stabilising at a dark red-brown
“The bollard is one of a number of landscape elements currently being designed for the Merchant Square masterplan in West London.”
Drawing inspiration from an ironworks which occupied part of the Merchant Square site until 1962, the ductile cast iron bollard acknowledges the industrial heritage of Paddington Basin. In the sand casting process, a draft of at least two degrees is required to enable the pattern to be removed from the fragile sand moulding without damaging it. The arcs which comprise the five visible faces of the bollard are based upon this two degree geometry. These cause the form to swell at the middle of the vertical faces giving a subtle curvature to the rectilinear form and a delicate dome to the top face. By its nature the cast iron will rust after the initial casting producing a red-orange iron oxide. Eventually, the patina will reach a stable red-brown colour and act as a natural protective coating.
Status In Production
Project Team Durham Foundry