This part finished cage is just one of the many different wave wall units that we (Craig Barnes Ltd Steelfixing Services) prefab for SLP Precast. You will notice that the part finished cage is in a steel jig. We designed this to make the fix easier, safer and more efficient. 

Here are a few of the same wave wall units prefabed and waiting to be put into the moulds and cast.

Here are some of the same wave wall units after they have been cast awaiting transportation to site.