A woman escaped serious injury after a heavy sheet of glass fell 20ft on to her.
The woman, who works for Brighton and Hove City Council, was hit on the shoulder and knocked to the ground.
She was walking past flats in St Catherine's Terrace, Hove, where builders were working, when the incident happened at 12.30pm yesterday.
Motorists and passers-by rushed to help but she refused their offers to call an ambulance.
She walked with a colleague to the council's administrative offices at nearby King's House in Grand Avenue.
The woman, who has not been named, is believed to have later been taken to the Royal Sussex County Hospital for treatment.
Onlooker Jackie Madders said: "A large sheet fell on her. She was very lucky it did not hit her on the head as it could have decapitated her."
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