City planners tighten rules to avoid tower downdraughts

Grant Prior 12 months ago
Share

The City of London Corporation has published new planning guidance to protect pedestrians and cyclists from powerful downdraughts caused by skyscrapers.

The UK’s first wind microclimate guidelines mean developers and designers will have to prioritise the comfort and safety of cyclists and pedestrians.

The Corporation said: “Wind can, in extreme cases, destabilise or push cyclists into the path of vehicles.

“By testing roadways as well as pavements through wind tunnel studies or computer simulations, it is expected that the more robust assessment will lead to a safer and more comfortable urban environment for all.”

The Corporation worked with specialist consultant RWDI to prepare the guidelines which will also:

  • Require that wind impacts are tested at the earliest point of a scheme’s design development (e.g. height and massing) to avoid the need to retrofit wind mitigation measures
  • Ensure more micro-level assessments of wind directions is carried out in wind tunnel testing
  • Apply a new rigorous code of practice in the use of Computational Fluid Dynamics (CFD) techniques
  • Require the commissioning of two separate consultants, one to carry out wind tunnel testing and the other CFD, and interrogate any discrepancies between both sets of results
  • Assess the variation of mean and gust wind speed and height

Alastair Moss, Chair of the Planning and Transportation Committee, said: With 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.

“These guidelines mark another significant step that the City Corporation is taking to put cyclists and pedestrians at the heart of planning in the Square Mile, prioritising their safety and experience.

“We 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.”

Latest news

Crane drivers face heat risk in “greenhouse” cabs

Union demands maximum three-hour shifts for drivers, free water and mini fridges in cabs
2 days ago

£100m Leeds student tower approved

Planning go-ahead for 32-storey Merrion Street skyscraper
2 days ago

Redrow pulls out of 1,100 home Wandsworth estate scheme

Construction started in February on first phase of Alton Estate regeneration
3 days ago

Supply chain event for £4.5bn Smart motorways plan

Subcontractor engagement launch event to set out new working arrangements
2 days ago

Construction Manager of the Year finalists revealed

Sixty of the country's best construction managers make the cut: Full list
3 days ago

McAlpine to kickstart £650m Nottingham Island Quarter

Construction to start on £9m first phase of giant scheme in October
3 days ago

Four injured during roof collapse in Windsor

Firefighters rescue workers from rubble after collapse
3 days ago

Groundworks boss banned for false tax returns

Insolvency Service investigates after contractor goes into liquidation
3 days ago

Buyers report robust construction recovery in July

Strongest rise in output for nearly five years
3 days ago

Planning revolution to open housing market to smaller builders

Planning to be revamped in bid to end dominance of major housebuilders
3 days ago

Nmcn still in profit despite Covid-19 crisis

Pandemic to cut margins to 0.5% this year but contractor confident in long term prospects
3 days ago

Shed builder Winvic hails £29m rail freight terminal win

Vast concrete pour to start in weeks on 30,000m3 terminal storage slab
4 days ago

Ibstock to shut three brick factories and axe 375 jobs

Brickmaker on cost-cutting push after £52m first-half loss
3 days ago

Hackitt slams industry’s ‘wait and see’ stance on building safety

Mace, Vistry and Construction Leadership Council praised for rising to safety challenge
3 days ago

Kier wins £160m Area 4 highways upkeep deal

Maintenance work to start in November on Kent and Sussex roads
4 days ago

25 demolition firms win places on Scottish framework

Demolition framework for Scottish council and housing associations
4 days ago

Amey clinches £240m deal to upkeep three major bridges

South west major structures inspection and maintenance worth £16m a year
4 days ago

Aecom to cut up to 500 jobs

Consultant starts redundancy consultation as it "re-shapes" the business
4 days ago

Squibb lands demolition deal on £220m Woolwich site

Year-long demolition of old Woolwich estate starts this month
4 days ago

Vinci replaces Galliford Try on £26m cancer centre

Demolition work completed by Galliford Try but client brings in new contractor
5 days ago

Morgan Sindall confident of second half profit surge

Post lockdown recovery continues as £9.3m of furlough cash to be handed back to government
4 days ago

M&E specialist Lorne Stewart battles to stem losses

Harrow-based building services specialist begins to curb losses
4 days ago

Worker crushed to death on Tottenham demolition site

Wall and roof collapses at two-storey industrial building
5 days ago

Countryside picked for £124m Bracknell housing plan

Over 400 homes to be built on three council-owned sites in town centre
4 days ago

Balfour to reopen concrete plant after Covid outbreak

Track and trace investigations show no-one affected at Hinkley where segments are supplied
5 days ago

Robertson lands Preston research centre contract

University of Sheffield picks main contractor for £20m scheme
5 days ago

300 “shovel ready” schemes get £900m funding boost

Government confirms schemes receiving cash from the Getting Building Fund
5 days ago

2021 workload rebound but to 6.4% below pre-Covid level

Construction forecasters bank on V-shaped recovery next year
5 days ago

Plans unveiled for new 40-acre Crewe warehouse scheme

Construction of 800,000 sq ft of space on former BAE factory site
5 days ago

Manchester wellbeing centre developer eyes three more sites

Construction to start next year on £250m Manchester scheme followed by trio of new venues
6 days ago

Contractor services