Baxter OHara
Credibility Strength Sustainability
Terrigal Fire Station

Project Type - Develop, Design & Construct

Project Value - $0.9 Million

Duration - 6 Week - Demolition & Design

                  18 Week - Construction Period

 

Fire & Rescue NSW engaged Baxter Building through NSW Public Works Project Management to develop, design and construct a new replacement single storey Fire Station at Terrigal, staffed by retained fire fighters.

The development consisted of extensive foundation works for a single level suspended slab construction to support a light weight structure that includes a double engine bay, 2 x amenities, 2 x locker rooms, kitchenette / mess / watch room, Captains office and 2 verandahs.

The existing fire station was demolished whilst the final design and cc process took place. Construction began officially in mid November and was completed in 18 working weeks which was in line with the nominated contract period. The client was extremely happy with the project delivery team throughout construction and very pleased with the project quality, cost and construction period. This property and building site were subject to a lot of design and construction risks that were identified and overcome such as;

  1. Foundation issues; this building needed to be constructed approximately 1m above natural ground level to allow for the 1 in 100 year flood from the Terrigal lagoon at the rear of the site. The original design called for screw piles at 4.5 metres depth. However after our test piling it was determined that we could not achieve the required bearing capacity so we had to quickly come up with an alternative design solution. The foundation material was soft sand riddled with old tree roots. The most cost effective solution was to convert to very large pad footings in lieu of the screw piles. This change in itself was very challenging due to the soft sand making it very difficult to form the footings without collapse. There was no room on site to move or store the excavated sand. We had to methodically work our way backwards in sections using shoring for all the pad footings and pouring single sections at a time for the best use of working space.

  2. Value engineering and innovation within the construction methods was required by Baxter Building to overcome the problems associated with the neighbouring property being a major sewer pumping station. This was achieved through designing a footing system that created no vibration or disruption to surrounding foundations.

  3. The building was constructed on a very small property on a main arterial road and the building footprint took up most of the site. This created logistical problems with material storage and trade coordination as there was very limited room to work safely and efficiently. This difficulty was overcome through diligent program management, site and traffic coordination. Site meetings were held with all subcontractors and construction programmes were issued to all subcontractors after group meetings to confirm everybody’s plans.

  4. The Fire Station was designed within 1.5m to the eastern boundary with a sewerage plant next door. For this class of building the BCA requires that all walls and openings within 3m of the boundary need to be fire rated. The original design called up 3 windows along the wall. Rather than provide drenchers for these windows, we decided to delete them and install vented skylights. We also had to relocate the northern glass sliding doors west 500mm to clear 3m away from the boundary. This required extensive last minute coordination with the steel structure shop contractor and shop drawings consultant.

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  • Terrigal Fire Station 1
  • Terrigal Fire Station 2
  • Terrigal Fire Station 3
  • Terrigal Fire Station 4
  • Terrigal Fire Station 5
  • Terrigal Fire Station 6
  • Terrigal Fire Station 7
  • Terrigal Fire Station 8
Terrigal Fire Station 1

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