Penrith
– Storage racks
Special Considerations / Challenges
- Preventative maintenance review to certify structural adequacy of existing steel storage racks.
- Exploring a solution that enables future racking requirements.
- Identifying the working load limit for every rack.
- Keeping the scope of works simple and manageable.
- Knowing what results are beneficial.
The SIGA Solution
- Identifying dangerous racks and recommending their removal.
- Identifying requirements for proprietary (standard pallet racking or similar) racks and recommending procedure for their compliance and certification.
- Apart from analysing the main racks, guiding the clients on the journey of what they needed to do to have procedures ensuring safe racking for the future.
More information in September – October 2008 newsletter - click here
Sydney
– A sagging Roof
Special Considerations / Challenges
- Identifying quickly the source of the problem.
- Safety of occupants working in the vicinity.
- Determining what to do to ensure trading is not interrupted.
- This building had suffered termite damage at one end of a timber rafter spanning 40m and had shown many signs of failure.
- This beam, 10-15m above floor level and spanning 40m, had deflected far too much.
The SIGA Solution
- Siga identified the initial hazard and instructed that the beam was to be made safe immediately.
- Providing a solution which was cost effective, could be implemented quickly in order to minimise disruption to tenants and suitable for the builder was imperative.
- Siga provided the documentation of final solution and necessary site supervision for its implementation, including repositioning (lifting) of beam.
More information in May – June 2008 newsletter - click here
Smithfield
- Industrial Building Problem Solving
Special Considerations / Challenges
- To determine what was causing the cracking and movement in the brickwork to the front façade and then determining whether it was from the foundation movement, wind loads, impact loads or otherwise.
- Stopping further movement and maintenance expense.
- Elimination of possible safety concerns associated with the instability.
- Ensuring the owner, tenant and contractor would all work together to get the project completed properly and quickly.
- Dealing with the unknowns of an existing structure.
The SIGA Solution
- Priority was to stabilise the front façade to cope with normal wind loads and the loads from power lines.
- Foundation movement was considered to not be a current contributing factor to the movement.
- However, the unusual loads on the brickwork due to power lines was considered to be the main cause of the brickwork movement.
- Site inspections, supervision, issue of instructions to ensure the above structural works were conducted in accordance with our specifications.
More information in September 2007 newsletter - click here
Taren
Point - 2750 sq mtr Warehouse with an Office
Special Considerations / Challenges
- The key objective for this project was all about time, or lack of it. The design began in early May 2006 with construction being completed mid March 2007.
- Typically projects like this involve a warehouse with a suspended concrete mezzanine. However, this project had some of the following requirements:
- 2 separate suspended concrete mezzanines and one additional internal mezzanine (3 total).
- Suspended external concrete paving to minimise impact on nearby tree root systems.
- Car repair facilities, changing what would ordinarily be concrete internal paving to providing access work pits, recessed concrete pits, grates and suspended concrete areas.
- Site conditions weren’t exactly routine either. This site is near the water and adjacent to a low lying open drainage canal (which changes depth with the tides).
The SIGA Solution
- Siga provided the design for the footings, internal and external floor slabs suspended concrete mezzanines, structural steel to the warehouse, mezzanine walls, roofs and storage mezzanine. We also provided site inspections and professional advice throughout the project.
- Screw piers ended up being used for the footings due to the softness of the soils.
More information in August 2007 newsletter - click here
Ingleburn – Industrial Duplex
|
|
Special Considerations / Challenges
- Co-ordinating all the requirements for a construction certificate approved through council within time limits.
- Preparation of all the structural details for construction.
- Co-ordinating relevant works on site to ensure the job progressed well.
- Avoiding headaches affecting the construction schedule.
The SIGA Solution
- Providing on site advice and organising of works to enable construction to be as seamless as possible.
- Liaising with neighbouring owners to sort out how to deal with the over-excavation. We could not start until this was sorted out.
- Providing the structural engineering details which we believe are to a standard amongst the best in Sydney to facilitate the construction.
- The project is now complete where we facilitated completion including:
- Co-ordinating trades.
- Organising documents such as certificates and work as executed drawings.
- Final occupancy certificate from council.More information in November 2006 newsletter - click here
|
|
Campbelltown – Industrial Refurbishment with 3 x 18m Crane Rail Trusses
Special Considerations / Challenges
- Modernisation of 1970’s poorly maintained building.
- Modifications to the existing building including removing portal columns, installing large trusses around the new manufacturing machinery.
- Verifying the adequacy of structural steel frames, bracing and the remainder of the structure including footings.
- Providing the basis for a work method statement and working load limit for the building.
- Designing 18 metre trusses able to carry crane loads.
- Cut existing portal frame columns out and suitably redesign structural frame.
- Checking the existing building to make sure it can cope with the new working conditions and loads.
- Finding out that the footings may not cope with our loads.
The SIGA Solution
- Determining the client’s requirements regarding loads, machinery, production and crane load needs.
- Making sure the truss details were available for the work crew to manufacture and erect.
- Co-ordinate & liaise for truss installation with footing upgrade requirements.
- Specify a strategy for footing upgrades / in service testing as a result of site findings.
- Working with client to ensure building structural adequacy will be verified by the time the workshop will be in full operation.
More information in August 2006 newsletter - click here
Smithfield
– Corrugating Machine Foundation
Special Considerations / Challenges
- Ensuring that the new foundations blended with the existing buildings constraints.
- Determining how to prepare the existing soils and concrete for the new slabs and the new machinery loads.
- Making sure vibrations from a piece of key machinery was isolated. This required the construction of an isolated concrete plinth.
The SIGA Solution
- Design and detailing of the plinth. (vibrationally isolated from the floor slab).
- Design and detailing of the concrete floor slab to support the plinth.
- Site inspections and certification to the structural steel reinforcement.
More information in November 2005 newsletter (252KB.) - click here
Penrith
- Industrial Tilt Up Panel Development
Special Considerations / Challenges
- A very complicated tilt-up (in-situ precast concrete wall panels) development
- Despite the property having no right angles, the challenge for the developer was to fully utilise the property
- In addition, the longest boundary, being the rear boundary, was curved
The SIGA Solution
- Workshop detailing of the tilt-up panels – including lifting inserts
- Structural steel roof framing
- Concrete raft foundation
- Concrete driveway pavement
Greenacre
- Safety Rails and Ladders
Special Considerations / Challenges
- Of great importance to this concrete batching plant was the maintenance and fine-tuning of these lime silos
- Simplifying the maintenance procedure and improving safety
- Installing safety rails, ladders and stairs in an area with many obstructions
- Planning the details of each component to ensure proper installation
- The high location meant that installation needed to be quick and efficient, and that the components could be easily transported
The SIGA Solution
- Conducted the initial site inspection to discuss and check proposed design loads, supports and details
- Reviewed workshop details, checking for structural adequacy
- Certified structural adequacy of the design
More information in August 2004 newsletter (143KB.) - click here
Revesby
- Industrial Storage Warehouse
Special Considerations / Challenges
- After adhering to a number of constraints including truck turning circles and parking, the building size was maximized to approx. 900 square metres
- The building was irregular in shape and required 3 different portal frame sizes to accommodate the structural steel design & fabrication requirements
- The floor slab was cast over an existing concrete floor that was cheaper to construct over, than remove
- Piers required drilling & pouring
The SIGA Solution
- Designed the foundation slab & piers
- Designed the structural steel portal frames
- Redesigned initial steel clad proposal for hebel precast panel wall cladding adopted
- Provided site inspections and certification for the foundation piers and steel reinforcement to the floor slab.
Smithfield
- Tilt Up Panel Extension
Special Considerations / Challenges
- The need for tilt up panel construction to provide an economical and cost effective solution (to an extension with extensive fire requirements)
- The requirement to match up with existing roof levels on two sides
- The importance of avoiding disruption of production in the existing building
The SIGA Solution
- Designed piers to concrete raft slab
- Design of concrete raft foundation slab
- Design of concrete tilt up panels including lifting inserts
- Design of structural steel to roof
- Provision of site inspections to the piers, steel to raft slab and tilt up panels
Smithfield
- Concrete Paving to Storage Area
Special Considerations
- This site had been well overdue for a facelift as the simple task of retrieving material meant driving a forklift on wet road base
- The site had been used for storage of materials, without adequate paving
- The storage space had become invaluable to the business functioning on neighbouring properties
- Any improvements required council approval with the usual time consuming red tape before any work could be done
The SIGA Solution
- Organised a collaboration of consultants to provide the necessary details to gain council approval
- Provided the structural design to the concrete paving
- Provides the site inspections and certification for the structural steel
More information in November 2004 newsletter (230KB.) - click here
