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The City of London has published a new set of guidance aimed at limiting the impact of new high-rise development on people at street level.

Claimed by the corporation as the 鈥淯K鈥檚 first wind microclimate guidelines for new development鈥�, the rules set new standards for the effects of tall buildings on pedestrians and cyclists.

The move follows concern over the effects of tower in Leeds.

The City said its new guidance would 鈥渞aise the benchmark鈥� for acceptable wind conditions and reclassify 鈥� for example 鈥� what had previously been describable as 鈥渁cceptable business walking conditions鈥� as an 鈥渦ncomfortable鈥� environment that should be avoided in anything other than exceptional circumstances.

Alastair Moss, who chairs the City鈥檚 planning and transportation committee, said that by testing roadways as well as pavements through wind tunnel studies and computer simulations it was expected that the more robust assessment measures would deliver a safer environment.

鈥淲ith the number of tall buildings in the Square Mile growing, it is important that the knock-on effects of new developments on wind at street level are properly considered,鈥� he said.

鈥淲e hope these groundbreaking guidelines can create a blueprint for others by delivering safer, more enjoyable streets that meet the evolving needs of this great City.鈥�

Moss added that as the first wind microclimate guidelines ever published in the UK, the criteria could form the basis for national or international standards for wind microclimate studies.

Drawn up with consultants RWDI, the guidance requires wind impacts to be tested at the earliest point of a scheme鈥檚 design development 鈥� suggesting the height and massing stage 鈥� to avoid the need to retrofit wind-mitigation measures.