Wall formwork panels should be modular enough to combine into the range of wall lengths and heights on the project without excessive filler pieces — every filler adds a joint, and every joint is a potential source of grout leakage or surface blemish.
The tie system matters as much as the panel itself: waler-based systems with paired steel channels allow clean, repeatable stripping, while the tie spacing needs to match the concrete pressure calculated for the planned pour rate and wall thickness.
Handling weight determines crew size and crane dependency — heavier steel panels resist more cycles but need more lifting support, while aluminum-faced systems are lighter to move by hand, which can matter on tight urban sites with limited crane access.