St Mark’s is an independent Anglican school in the northern suburbs of Perth and as part of their 10 year campus growth strategy they are constructing a senior academic centre.


Fortec was engaged by Perkins Builders to supply and install the post-tensioning to the first and second floor suspended slabs. The 2 levels were relatively large single 2,000m2 concrete pours placed utilising 2 concrete boom pumps.

The scope included:

  • Supply of pre-stressing anchorages, placing and fixing of ducting and duct supports.
  • Installation, stressing and grouting of the post tensioned tendons.
  • Fixing of recess forms and achorages.
  • Removal of staples to exposed carpark and balcony soffits.
  • Final stressing and trimming of excess strands after concrete pour.
  • Application of a wood float finish.


  • All works were self-performed by Fortec.
  • The project was completed on time.


  • Post Tensioning

Interested in working with us? Get in contact