Preparations begin for ZB implosion

The gates and cordons are beginning to go up around the exclusion site for New Zealand's first building implosion tomorrow morning.

Christchurch's Radio Network House will meet its doom at 8am tomorrow.

The gates around the public exclusion zone are going up around Latimer Square, near the Radio Network House.

It will be the first in New Zealand to be brought down by the implosion method.

Ceres, the American company in control of the implosion, will use 63kg of explosives to bring the building down in under 8 seconds. It will cost around $1 million.

The forecast for tomorrow might determine how big the crowd is for the implosion - with drizzle and northeasterly winds expected.

Ceres is advising anyone with respiratory conditions aggravated by dust to stay indoors.

They are also telling residents in nearby buildings to shut all doors and windows and cover any air intakes in case of dust.

VIDEO: Live stream of the implosion