The site was acquired by a banking institution for its Sydney Headquarters.  The eight story commercial building was originally constructed in the 1960’s, with the HVAC plant in need of a significant upgrade in order to meet the requirements of its new owner.  

 

The client’s key requirements were:

1. Deliver to a tight construction program that accommodated the client’s current lease terms,

2. Fixed construction & fitout budget, and

3. Building must remain operational during the upgrade.

 

Rapley Consulting Engineers helped achieve the above objectives by staging the upgrade works into two parts, consisting of Stage 1, short lead time, fitout works, and Stage 2, long lead time building upgrade works.   This enabled the client to occupy the building without delay.  

Furthermore, critical upgrade works to the air conditioning was designed to enable the works to be carried out after hours and during Winter, to minimise disruption.  

 

The ultimate design solution converted the inefficient, constant volume, direct expansion system, into a variable air volume, system, capable of achieving a NABERS 5 star performance with future plant upgrades.  

 

Rapley Consulting Engineers used building energy simulations, and a life cycle cost assessment to identify the preferred solution, and to also address the risk of cost overruns.  

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“Rapley Consulting Engineers were very responsive, and showed great flexibility in their approach whilst navigating an array of challenges that came up during design.  Having Sean’s involvement throughout the project enabled the team to resolve issues rapidly, and without delay."

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Huy Huynh, of Figtree Project Management, 

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