1 

Is tilt-up design limited and are the buildings flat?

Tilt-up construction is one of the most flexible building methods available, offering endless customisation while maintaining strength, efficiency, and cost-effectiveness. Although it is true that rectangular panels are the most economical option, virtually any shape of panel can be used in tilt-up construction today. Tilt-up is more than just grey concrete - modern tilt-up buildings can be argitectural masterpieces, from high-end offices to art galleries and museums.

By using form liners, staining, exposed aggregate, and embedded materials, tilt-up buildings achieve stunning aesthetics that rival traditional masonry, stone, and precast designs. This is often achieved by large panel format that can only be achieved by on-site casting.
 

2

Does tilt-up construction cost more than precast?

Although tilt-up is often perceived as more expensive, it is actually more cost effective due to its load-bearing design. This eliminates the need for structural perimeter steel or concrete columns, reduces material and labour costs, reduces the exterior footprint and simplifies co-ordination.

Because tilt-up walls are load-bearing, you don't need perimeter structural columns, beams, or cross-bracing. This results in significant savings as buildings could be made smaller or could render more useable space. We find that overall cost of construction is often not higher when considering all aspects of the build (foundation design, wall panel thickness and cost associated with the roof construction).

Additionally, the process requires fewer trades, no plastering and no scaffolding for exterior wall contrsuction. It is therefore a much safer and faster construction method. When considering Tilt-up construction it is evident that client considering life time costing opt for tilt-up construction; even when the initial cost is higher.

3

Can tilt-up panels be constructed during the rain period?

Constructing during the rain period is slower than during the dry season; yet much faster than conventional construction. This is primarily due to the fact that work on grade can continue shortly after it has stopped raining versus traditional brick and mortar construction and working at heights that is delayed due to consequencial delays as elements are too wet to continue with.

Being on grade there is less risk of slipping or falling off scaffolding compared to traditional way of construction. This makes tilt-up construction feasible and practical throughout the year, regardless of the cold / rain weather.

4

Does casting on permanent floors create issues?

When tilt-up was initially introduced 25 years ago all shutters had to be positively fixed to concrete floors (casting slabs). This resulted in thousands of holes that had to be drilled and plugged once completed. New adhesives facilitate that fixings are now glued which can be cleaned and removed after the panels are lifted. Another common misconception is that early slab casting leads to moisture issues, surface cracking, chipping, and other quality concerns - ultimately adding extra time, cost, and labour to the project. Early slab-on-grade casting is not just possible - it is a strategic advantage. With modern equipment, advanced techniques, and thoughtful planning, concrete can be placed and cured efficiently without relying on ideal conditions, extended set times, or project delays.

Where there is no “overcoat” finish to the floor afterwards or where the final finish appearance is critical to the client, we will opt for casting temporary floor beds. These 50mm concrete surface beds are cost effective and have proven that they are adequate for the support of large panels. They can either be cast lower than the permanent slab or could be removed once work is completed. Where epoxy floors are specified, it is positive to note that early casting of floor slabs allows sufficient time for curing below the panels and reduces overall construction times.

5

Can panels once constructed, be modified or altered?

We have cut quite a few openings and doors into panels. Yes, panels can be changed and altered after construction is completed. They can even be lifted and removed by crane. Please keep in mind that Tilt-Up construction is a fully engineered system. Please consult with the structural engineer about changes proposed before proceeding with such work.

6

Will Tilt-up panels allow water through?

A general misconception is that tilt-up panels like traditional cast-in situ panels are not watertight. When panels are constructed horizontally due to proper vibration and the power floating process panels are watertight.

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Several water tanks have been constructed (200mm thick panels) where no waterproofing has been used (besides where panels are connected to either columns; junctions or intersections).

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The above is of great benefit in the construction of CA Stores (controlled atmospheric rooms), as these panels do not allow gas to escape through the panels. Traditionally panel joints are also significantly less when compared to traditional Chromadek insulated panels.