Pioneering designs can lead to monumental headaches, as the team behind 20 Fenchurch Street will be well aware
Cor phew! There鈥檚 rarely been a hotter silly season story than this week鈥檚 鈥溾��. With most kids still on holiday, the image of Land Securities鈥� 拢500m Walkie Talkie focusing solar rays on the Square Mile was an unexpected godsend during the annual news famine.
The most distinctive feature of 20 Fenchurch Street, being developed by Land Sec and Canary Wharf Group, is its collection of convex and, more problematically it now emerges, concave glass walls. With the sun high on Tuesday, it started focusing the rays down onto neighbouring Eastcheap.
Within hours, the world鈥檚 media was thronging at the base of the 160m Rafael Vi帽oly-designed tower, surveying the damage, surveying the vast concave wall of glass and surveying themselves 鈥� surveying. What was great for journalists in this case was they didn鈥檛 even have to wait for press offices to return calls (a nightmare at this time of year). All that was needed was a camera, mike and that most important tool in the journalist鈥檚 arsenal, imagination. Thus, there were close-ups of the melted Jaguar, scorched doormats, a sizzling bicycle saddle, endless vox pops and, most enterprisingly, a journalist attempting to fry an egg under the full beam.
There are clear echoes of the nearby 鈥淲obbly Bridge鈥�, and, no doubt, will be the same blame game to follow. (As I recall, it was vaunted by its architects as 鈥淣orman Foster鈥檚 bridge鈥� until it started swaying, when it became 鈥淎rup鈥檚鈥� bridge鈥�, until reverting when the engineers had sorted out the problem.)
But unlike the bridge, the great surprise was that no-one saw this coming. Any school pupil that has burned down his or her science lab will know of the dangers that can be wreaked by focusing the sun鈥檚 rays. Judging just who was responsible for missing this most basic of scientific phenomena will presumably provide a field day for lawyers. And, potentially, glazing contractors.
The question is whether the problem can be solved with a relatively quick fix - either a spray-able or peel-able film on the south wall - or the more costly and disruptive option of an entire re-glazing of the offending south wall with low reflective glass. The former would probably cost low single digit millions, I have heard suggested, but might not be satisfactory or robust enough. My admittedly finger in the air estimate of the latter is northwards of 拢10m, not including potential loss of rent and claims from dislodged tenants.
A sad legacy of innovative buildings such as this, and the nearby Shard and Cheesegrater, is that pioneering designs frequently lead to monumental headaches for the developers, supply chain or both.
No doubt there will now follow a process of claim and counter-claim. Can I suggest a photo opportunity for those journalists that may doubt the veracity of any of their various press office contacts: just hold up a pair of pants at the focal point and wait for them to start smouldering.
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