scaffolding phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic noun [U] 

1. a structure of wooden boards and metal poles put against a building for workers to stand on 
   when they want
to reach the higher parts of the building 

   Scaffolding has been erected around the tower and repair work will start next week.
    Many public buildings in the city are covered in
scaffolding and closed to the public.

This page is cited from Cambridge Dictionaries Online.  For the original, please visit

http://dictionary.cambridge.org/define.asp?key=transient*1+0