Fairfield
– Market awning upgrade
Special Considerations / Challenges
- Improving an older area of the markets.
- Providing a new structure at the front which would replace the existing structure, with greater clearance.
- Improvements to the entrance area to lift first impressions.
- Staging the works, as for budget reasons not all could be done at once.
- Blending structural, architectural, existing building constraints with stall layouts and other functional requirements such as heights.
The Siga Solution
- Provision of documentation including working drawings, service layouts, and structural details.
- Professional advice regarding associated items such as drainage.
- Site inspections and certification of structural items.
- Professional advice regarding unexpected site conditions.
More information in July – August 2008 newsletter - click here
Burwood
- Pipe excavation
Special Considerations / Challenges
- Ensure that the working environment for this project was safe for the workers to do their jobs.
- Achieving this in a simple and cost-effective manner was the key.
- Shoring of a 90 degree bend in a trench excavation.
- Operating quickly to ensure the area was workable.
- Adopting standard shoring practices / solutions – avoiding site specific designing / construction.
- It’s all too easy to think that because you have done something similar before that you can go one step further away from safety.
The Siga Solution
- Site discussions guiding managers as to necessary structural requirements of utilising standard shoring and limitations of machinery loads adjacent to excavations.
- Where to limit personnel access.
- Discussing what will and won’t work to ensure work can continue.
- Confirming the structural adequacy of the method adopted.
- Minimising the amount of engineering input required in this project was strangely the best option.
- A wise call to get Siga’s assistance on this project.
More information in February 2008 newsletter - click here
Sydney
- Bridge Maintenance
Special Considerations / Challenges
- The initial objective was to provide a solution to get the necessary clamps into position.
- Designing the concrete plinth to support the winch system lifting 2 x 6.5 (13 Ton) of clamps (equipment).
- Working with all the necessary contractors.
- Whilst time is always critical, this was the most crucial aspect of our service for this project.
- Providing the best solution to keep the winches stable during the course of lifting 6.5 Ton clamps - which in some instances were 50m above the river bed.
- Although our input in the end was relatively simple, getting to this point had a few hair-raising but rewarding moments.
The Siga Solution
- Siga provided the necessary initial design input to facilitate the strategy for the lifting of the clamps.
- Design and documentation of the concrete plinth.
- Site inspections, professional advice and discussions.
- And yes, the 13 Ton of clamps were successfully lifted into position 50m above the lower river bed.
More information in December 2007 newsletter - click here
Parramatta
- Repairs to Concrete Degradation
Special Considerations / Challenges
- Concrete cancer had affected the underside of the walkway to the weir and Siga was contracted to provide instructions on the rectification works.
- Pedestrian traffic: as the walkway is heavily used by pedestrian traffic, pedestrian access of the walkway during the repairs needed to be considered.
- Flooding: this weir is subject to flooding when it rains! Yes, whilst it hasn’t rained heavily in Sydney for some time there was some return of this rain early 2007. Of course, that’s when the repairs just happened to be scheduled.
The SIGA Solution
- Determining suitable solutions and material with the builder to cater for the submerged environment that the repairs would be exposed to.
- Inspections and discussions on site to consider the heritage listing constraints as well as the builder’s schedule and working conditions.
- There were 7 different sections affected. Simplifying the specifications for the works for repairs was a necessity (some sections with 100% affected soffit, others as little as 20%).
More information in June 2007 Newsletter - Click here
Melbourne
- 2006 Commonwealth Games - X Box Show Dome
Special Considerations / Challenges
- Safety – as this structure was in a very public area it was critical to make sure that it would not adversely be affected by any winds – particularly up to 70km/hr. This had to work, it needed to be safe and fun – no room for ifs or buts.
- Compliance – this structure needed to comply with the Building & Event Standards, as well as the local authorities, however, there were no Australian Standards governing such a structure.
- Specifications – providing accurate specifications without standard guidelines.
The SIGA Solution
- Asking the right questions of the right people – liaising with the architect and local authorities to determine what was required to substantiate the safety of the inflatable structure under specified wind load.
- Peace of mind – liaising with the client to ensure the deadline was met.
- Wind calculations - the wind forces were calculated using AS1170.2 – 2002 which is a standard for wind loads on structures or buildings and therefore the best available starting point.
- On time – because of the restrictions on the time line, then nothing could be left to chance.
More information in May 2006 newsletter ( 295KB.) - click here
The Clients View
‘As Australasia’s pre-eminent designer-manufacturer of inflatables for branding presence and events, Inflatable Image Technologies, with a who’s who list of clients demanding the best in ethics and performance standards, selected SIGA to undertake calculations and certification for the unique, patented ShowDome Systems. Inflatable Image has not regretted the selection, which delivered prompt, courteous service, concise no-fuss communications and – where appropriate – a sense of humour. SIGA supplied what we wanted, under pressure, to a tight timeline.’ - Chris Miller, Managing Director – Inflatable Image Technologies
Parramatta
- Action
Suzuki Parramatta - New car showroom & sales yard
Special Considerations / Challenges
- Negotiating with the local Council delaying commencement of construction
- Neighbouring builders installing ground anchors through the foundation areas
- Ambiguous construction drawings/specifications
The SIGA Solution
- Design of piers along the boundary to compensate for design loads and constraints from the neighbouring development
- Design and detailing of the concrete foundations, external paving and structural steel
- Building over sewer details, foundations to light poles and detention tank details
- Dilapidation report to neighbouring building
- Provided site inspections to all structural items including foundation piers, main building floor slabs, external paving slabs, retaining walls, detention tank, mezzanine floor reinforcement and structural steel
More information in February 2005 newsletter ( 215KB.) - click here
Parramatta
- Citroen
Parramatta - Showroom Refurbishment
Special Considerations / Challenges
- A tight construction time
- Submission of solution prior to construction for budgeting and planning
- Unique structural steel solution to support the new fascia and façade considering the existing structure
The SIGA Solution
- Structural steel frame to the new awning and side door openings
- Concrete footings
- Supports to new blockwork wall opening
- Additional northern awning
- Existing purlin re-strengthening
- Provided site inspections to the footings and all structural steel for this project
More information in February 2004 newsletter ( 190KB.) - click here
Maroubra
- St
Spyridon College - New Classroom Buildings & Facilities
Special Considerations / Challenges
- Determining the most suitable foundation design for the considerable fill on site
- Negotiating with all contractors to ensure the correct foundations were provided (screw piers)
- Clarification of ambiguous construction drawings / specifications and dimensions
The SIGA Solution
- Designed ground level concrete floor slab and foundation to meet the requirements for screw piers
- Designed lift shaft and external pavement
- Created innovative first floor structural steel beam designs to support ultra floor suspended floor slab
- Provided site inspections to all structural items including the ground floor slabs, external paving slabs, blockwork walls, structural steel including the first floor steel beams
- In addition, we provided assistance with the many and varied structural queries asked along the way to achieving the finished product.
More information in May 2005 newsletter ( 225KB.) - click here
Burwood
– Wagon Wheels Hyundai - New Car Showroom & Sales Yard
Special Considerations / Challenges
- Located on main road on car yard strip
- Well known and recognised site
- The first project of this kind for this builder
- Time constraints due to proposed opening date
The SIGA Solution
- Designed the structural steel work for the portal frame
- Provided the foundation concrete slab design
- Included general masonry design including rear retaining wall
- Managed the concrete car park paving
Designed the structural concrete & blockwork details for the storm water system
Lansvale – Caryard
Redevelopment
Special Considerations / Challenges
- Required positioning a new building while keeping the old building and car yard functioning for as long as possible during construction
- Needed suspended concrete upper level slab with access ramps for vehicles.
- More than 700 square metres of paving surrounding the main building was required
The SIGA Solution
- Installed structural steel roof framing to support the roof and upper level brickwork
- Used a reinforced concrete suspended upper level slab
- Included structural steel to support the upper level suspended slab
- Provided all site inspections
More information in May 2004 newsletter ( 160KB.) - click here
Parramatta
- Renault
Parramatta - Showroom Refurbishment
Special Considerations / Challenges
- The main car yard & showroom were required to remain functional during renovations
- Siga had helped with renovations previously on this building and were now back to finish the job
- Required the demolition of an existing residence and minimising expenses to erect the new structure
The SIGA Solution
- Structural steel portal frame and awnings
- Footings and floor depending on existing structure during demolition
- Provided site inspections and certification for the structural steel and floor slab
