Rectangular tanks for a tight spot – “The Block” Houses


  • Detention Tanks in very tight space
  • Hard volcanic rock
  • Maintaining correct volume of retention in between existing piles.

Our Task

This small site where the 4 Block NZ villas stand, rests at the foot of Mount Albert. When the engineers determined that the site coverage of the villas would require detaining 15,200L of storm water they knew they couldn’t dig down and they didn’t have space for circular above ground tanks.