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A
series of tensioned wires is strung across the void from new balustrade
railings to create a security barrier between the lower public visa
section and upper private spaces without compromising the openness
of the original design of the double height central well. Parallel
stainless steel hollow circular sections are supported on the balustrade
glazing and take the full pressure of the tensioned wires. The wires
are strung across the void, 75mm apart. One end is attached to a phosphor
bronze peg on a flange welded to the inner rail; it travels across
the void, loops around stainless steel pegs on the opposite rail and
back to be secured and tensioned by another phosphor bronze peg. New
light fittings reflect off the wires and produce highly visible moiré
patterns when viewed from the gallery; from the visa section the wires
are almost invisible. |
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