Selecting between conventional formwork and aluminum formwork for a building project is more than just comparing material properties. Issues such as building design, labor, time, and the effective panel life all have to be taken into account to determine which formwork system will be cost-effective in the long run. The formwork required for a project to complete the work is more than just claims that one material is better than another.
How Do Building Layout and Design Stability Affect Formwork Selection?
Do Repetitive Floor Plans Make Aluminium Formwork More Practical?
By repeating the floor plans, crews can use the same formwork panel arrangement and minimize the number of changes required. Aluminium formwork is particularly popular for repetitive buildings like apartment towers and similar developments with identical blocks.
The height of a building does not always mean that repeatable pours will be achieved. For example, a 20-storey building could contain many different types of layouts, whereas a number of low-rise dwellings designed to a single format could provide more repeatable pours.
How Do Irregular Structures and Design Changes Influence the Choice?
Conventional timber formwork can easily be cut on site to complete individual details and to amend as required. Aluminium panels can also complete complex details and shapes but would need to be designed for prior to site use.
Le Système de coffrage en aluminium GOWE can be produced from drawings for walls, floor slabs, beams, columns and stairways. The question remains whether enough panels will be needed for production of custom-made panels.
How Do Upfront Costs and Reuse Potential Affect the Aluminium Formwork Decision?
How Does the Initial Investment Compare Between the Two Systems?
The aluminium formwork initial cost is generally higher than timber or plywood shuttering. Contractors should compare complete quotations, including design, supports, accessories, transportation, and technical assistance—not panel prices alone.
How Many Reuses Can the Project Actually Achieve?
In good condition, aluminum formwork can be used up to 250-300 times, but the number of cycles actually possible is influenced by any damage, repairs, and changes to the design.
Don’t confuse a single project of 10 repeats with a development of hundreds of repeats. Try to estimate the average number of formwork reuse cycles on current and future projects before you start calculating the returns.
What Should Be Included in the Total Cost Comparison?
Aluminium formwork cost over the whole lifecycle includes Labour hours, Maintenance, Replacement, Storage, Surface repair, and Resale value.
Cost-sensitive projects in Southeast Asia often evaluate initial price vs. labor cost per floor and material lifespan in terms of total formwork cost per sqm completed. This would be expressed in terms of total cost of formwork reused in actual construction, as well as cost of local labor.
When Does a Faster Construction Schedule Justify Aluminium Formwork?
How Do Formwork Cycles Differ Between Conventional and Aluminium Systems?
Compared to conventional shuttering, many cutting and fitting exercises are avoided with a standardized aluminium formwork construction cycle. In a consistent sequence trained site crews can build up a formation using standardized formwork panels.
The Aluminium formwork from our company was used at the Tanglin Halt residential redevelopment project in Singapore, a high-density development. They managed to complete a floor in 4-5 days. This is an excellent example of repetitive installation and effective site coordination.
Will Faster Formwork Installation Shorten the Overall Project Timeline?
No, there are many other factors that determine the pace of a project, including reinforcement, services installation, concrete curing, inspections, and stripping. Often another trade will control the critical path of a project.
The actual savings in terms of construction time for a floor depend on proper coordination of the complete floor cycle.
How Do Labour Availability and Site Logistics Influence Formwork Selection?
Which Formwork System Better Matches the Available Workforce?
The use of timber shuttering heavily relies on accurate measuring and cutting. Whilst the use of modular systems can reduce the amount of fabrication that is required, there is still a need for skilled tradesmen to work under the supervision of site staff who have received full training.
Initial training of employees can render the use of aluminium formwork more manageable in regions where skilled carpenters are scarce or too expensive. Compare the amount of labor hours required for a single pour in formwork made of aluminum with that of classical carpenter formwork.
How Do Material Handling and Site Access Affect the Decision?
Even lightweight aluminum panels need to be lifted safely and require planning for access, storage, and vertical transport.
Efficient formwork handling on busy city center sites can reduce lost time between successive pours.
Can Design Approval and Delivery Lead Times Influence the Choice?
Time is needed for the drawings to be approved and the custom system to be fabricated. This also includes trial assembly and shipping. This time is part of the formwork procurement planning and has to be taken into account for deliveries abroad.
GOWE’s practice is to coordinate design, manufacture, inspect, and prepare for shipment to uncover fit-up problems as early as possible. For an immediate start with as-yet unfinished drawings for a particular project, GOWE will use available conventional shuttering.
How Do Concrete Finish and Safety Requirements Affect Formwork Selection?
Does the Required Concrete Finish Favour Aluminium Formwork?
Alignment of formwork and smooth surface of panels enable a good surface finish of the concrete. However, the results also depend on correct installation, correct placement of concrete, vibration, and release agents.
Stellar development in Singapore utilized aluminum formwork from our company for the retaining walls. The required site-specific accuracy for the formwork was met for this structural application. Formwork for structural work should be selected on the basis of the required formwork for the structural part of a building and not on the basis of the term used to describe the building.
What Structural and Safety Checks Must Both Systems Meet?
Similarly, temporary structures need to be checked by an engineer with respect to concrete pressure, construction loads, bracing, connections, and temporary supports. These need to be designed in accordance with approved drawings and local building regulations irrespective of the material used.
Safety assessment of installed formwork needs to consider the entire setup, not just the weight of the panels.
How Can Contractors Choose Between Aluminium, Conventional and Hybrid Formwork?
When Is Aluminium Formwork the Better Choice?
Aluminium formwork systems for high-rise buildings are suitable for projects that have repeating forms, consistent designs, and can realize benefits of saving labor or time through repeated use. Reusing the formwork on future projects further supports the use of aluminum formwork systems.
When Should Contractors Choose Conventional Formwork Instead?
For small, irregularly-shaped or frequently-changing projects, made with local materials and using limited upfront capital, conventional shuttering can be more suitable.
When Is a Hybrid Formwork Strategy Worth Considering?
A hybrid formwork system could consist of aluminum formwork for repeated structural elements such as walls and slabs, and timber for unusual details. The engineer then has to coordinate the interfaces, the supports of the individual parts, and the build-up sequence.
Make a final decision based on the repeatable area, realistic reuse, workforce capacity, project schedule, and fully installed cost.
FAQ
Q: Is Aluminium Formwork Cheaper Than Conventional Formwork for Small Projects?
A: No. Higher initial investment has to be recovered on a one-off project. Repeated laying out of plans and high labor costs can easily offset the initial lower cost. Compare installed cost to purchase price.
Q: How Many Floors Are Needed to Make Aluminium Formwork Cost-Effective?
A: There is no fixed threshold for cost-effectiveness for aluminium formwork. It largely depends on repeatable casting area, labor costs, formwork panel utilization, and the potential for reuse on subsequent projects.
Q: How Long Does Aluminium Formwork Take to Manufacture and Deliver?
A: Aluminum formwork delivery time will depend on drawings, project size, customisation, production time, and location. At GOWE, we schedule against approved designs and quantities, and this includes international shipping in our planning.
Q: What Certificates Should Contractors Request for Aluminium Formwork?
A:A list of relevant certificates for the aluminium formwork, test reports of the materials, quality records, and design documents of the formwork required by the project. At GOWE, we check the contract requirements and local specifications to see which documents are available for that system.
Q: Can Aluminium Formwork and Conventional Formwork Be Used in the Same Building?
A: Yes. Aluminum formwork is better suited for repetitive areas of formwork, while timber formwork is better for irregular areas. Engineers must verify interfaces, loads, supports, and sequence of installation for either type.
