Kista Science Tower

WTC What Have We Learnt?• Concrete cores are better than shaft walling– Most current UK high-rise use concrete.– Relevant to fire and ‘extreme’ events.– Key is quality of construction.– Cost implications for services integration.• Steel connections need careful design– Disproportionate collapse.• System redundancy may be important• Better fire fighting access• Alternative evacuation scenarios.– Ask ‘what if?’– Can we trust phased evacuation?– Lifts are a major focus.• We are not scared of high rise• The difference between ‘fire’ and ‘extreme’ events is recognised