Construction Process Tiber Construction was responsible for the demolition and construction of the building . Prior to new construction commencing , two floors were demolished above ground floor . The demolition of the existing building took seven months .
The foundations began in October 2012 and the project achieved practical completion in May 2014 , resulting in the project construction period of 18 months , despite challenges and difficulties faced throughout the construction industry . One of the biggest challenges was the underpinning of foundations and introduction of micropiles to strengthen and underpin the existing structure , a process which was very time consuming .
Structure The superstructure is supported by 13 shear beams that span 31,9m x 1,5m x 2m at parking level 0 . One particular challenge with these was the requirement for a continuous concrete pour of four beams at the same time around the escalators which lasted 22 hours .
Fly ash extender was used on all concrete which decreased the quantity of Portland cement required and , therefore , assisted in diminishing the negative environmental effects of raw material depletion . Fly ash is a by-product of steel manufacture and its introduction contributes to the reduction of negative impacts on the environment through construction .
15 Alice Lane South 277