EARTHWORKS & CONCRETE STRUCTURES

 

Linde Reserve Apron Construction, Stepney

Client: City of Norwood, Payneham and St Peters
Construction Period: 11 Weeks
Value: $530,000

Project Scope: The section of Second Creek through Linde Reserve was converted to a naturalised / gabion lined channel from a concrete lined channel in approximately 2010. Following these works, there have been multiple flooding events upstream of the naturalised section of creek within Linde Reserve, between the reserve and Henry Street.

The flooding was determined to be as a result of a series of turbulent hydraulic jumps due to the diverse creek bed conditions. A detailed design was undertaken to improve the hydraulic transfer of flows along the creek bed. Scope of works associated with the apron construction included removal of the existing reno mattresses, base trimming and preparation, concrete strip footing construction, concrete channel lining and mass rock beaching.

Innovation: Following removal of the existing gabion baskets, the subgrade was found to be unsuitable. A lean mix base was installed which provided a sound base to build on and also facilitated works through winter.



Reynella Primary School Swale and Stormwater Upgrade

Client: Department of Planning, Transport and Infrastructure
Construction Period: 6 Weeks
Value: $170,000

Project Scope: Camco were engaged by DPTI to build a concrete swale at the back of the Reynella Primary School oval. This was the result of neighbouring properties being flooded during the 1 in 50 year rain event that occurred in 2016. A creative design was put forward by the DPTI consulting engineer to prevent this from happening again in the future and Camco were able to successfully implement the design.

The main hurdle on this project was access, with the need to build the structure with minimal disruption to the school’s oval. Camco’s methodology kept the construction footprint at a minimum through the use of small machinery and concrete pumps with long reach. Pedestrian management was also a key factor and Camco produced an extensive pedestrian management plan particularly focussed around school drop off and pick up times.

Innovation: Camco was able to add a permanent access point to the oval by installing removable bollard sleeves and shaping the batter to allow maintenance vehicles into the area.

 

Brownhill Creek, Whites Road Footbridge

Client: Department of Environment, Water and Natural Resources
Construction Period: 4 Weeks
Value: $215,000

Project Scope: Design and construction of a new 18m long clear single span pedestrian bridge adjacent the existing herniate road bridge at Whites Road Brownhill Creek, the project scope includes concept design consultation, detailed structural engineering design including steel girders and bearing piles, site preparation, steel fabrication, screw pile abutment construction, in-situ concrete pile caps, installation of the steel bridge structure and placement of FRP decking and balustrading.

A key project consideration was to integrate the bridge structure into the existing abutment space. Designing footings and pile caps to fit around the existing services and providing a deep screen to “mask” the large steel conduits carrying water, sewer and communications conduits across the bridge. 

Value added options: The bridge was constructed from cutting edge materials but made to have a “heritage” look befitting the area of the installation.
Problem Solving: Fabricating the bridge on site but not in-situ enable the existing road bridge to remain open for the majority of the construction period and also ensure a safe construction method was employed.

 

Ayr Avenue, Torrens Park - Bridge Replacement

Client: City of Mitcham
Construction Period: 32 Weeks
Value: $880,000

Project Scope: Camco was engaged by council to demolish the existing condemned bridge followed by the construction a new culvert bridge and road over Brownhill Creek at Ayr Avenue, Torrens Park. The project scope included; site clearing, tree removal, road pavement removal, demolition of the existing concrete bridge structure followed by construction of new in-situ concrete base slab, placement of new pre-cast culverts, construction of the in-situ headwalls, coordination of third party service providers who installed new gas main, water main and Telstra NBN infrastructure through the new road over the creek, construction of new stormwater side entry pits and pipes. Construction of erosion protection via gabion rock walls and rock lining. Construction of new concrete barrier and concrete posts with galvanized steel barriers, new kerbing, road pavement construction, footpath and landscaping.

Value Add: Camco was able to provide certified clean fill as back fill to replace creek rock that had been used on site to build the road originally 80 to 100 years ago.
Problem Solving: The roots of a significant tree were growing into the new footing location, Camco worked in conjunction with the design engineers to construct a suspended concrete outlet from the culverts, to avoid the root system.

 

Adelaide SAMFS, Wakefield Street - Underground Fuel Storage Upgrade

Client: Spotless
Construction Period: 10 Weeks
Value: $630,000

Project Scope: SAMFS commissioned a report detailing the results of HRVP soil logging within an area holding (3) underground fuel storage tanks. It was clear the soil had been impacted petroleum hydrocarbons due to a suspected leak.SAMFS commissioned a report detailing the results of HRVP soil logging within an area holding (3) underground fuel storage tanks. It was clear the soil had been impacted petroleum hydrocarbons due to a suspected leak.

Camco were engaged to purge, decommission, and remove the existing tanks, excavate, and install a new 40000lt underground fuel tanks and new bowsers. The project also required the installation of a new electrical distribution board and a new concrete base slab to the refiling area surrounded by ACO trench drain running to a pre-treatment tank “Puraceptor”.


Innovation: The design which was issued had some flaws which made the scope of works impossible to be able to connect into existing infrastructure without some major disruptions to local business and household activities. The experience of the project team with sewer construction made problem solving these issues far less difficult and provided the council with reassurance and confidence moving forward. This resulted in added scope, and benefittted local business and households as no disruptions to their activities or notification needed to be issued.

 

Marion Road, Brooklyn Park Depot - Fuel Tank Removal

Client: City of West Torrens
Construction Period: 6 Weeks
Value: $275,000

Project Scope: Remediation of the former depot owned by the City of West Torrens. The scope of work implemented for the remediation in accordance with EPA guidelines.  The remediation consisted of the removal of three dis-used underground storage tanks, consisting of two 4,500 L diesel and an 8,000L ULP. A large undercover filling area formerly containing three fuel dispensing bowsers was also remediated. To enable divestment of the Site, the fuel storage tanks, bowsers, fuel lines, oil store and associated infrastructure were required to be removed from the site and any contaminated soils identified during the works were removed and disposed of.


Innovation: Due to the proximity of the site remediation to a heritage listed building it was deemed that the most cost effective and safest solution was to backfill the initial layer until shoring was not required with CLSM. This resulted in both a quicker methodology whilst conforming to the Level 1 requirements for backfilling.