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Friday, 6 June 2014

Trench Warfare


We are building a hybrid trench/raft foundation.
First we dig a 550mm wide 600mm deep trench around the perimeter.Then
  •  we divide the foundation into four  by digging another two trenches.

  • and lay 3 Reinforcing 10mm bars into each trench tying them together with wire
  • 250 mm of concrete is pumped into the trenches by Fritz and his pump.
  • A plinth is built using brick on the East, North and South walls and dressed stone that we discovered under the surface of the soil that we excavated on the West wall. (When I think of all the money I am forking out this will probably become the wailing wall)
This is scheduled for Tuesday 10th June

The four sections are treated as follows
  • soaked with long lasting termite poison
  • packed with hardcore to a distance 150mm to the top of the plinth.
  • the hardcore is pounded into submission with a device called a whacker.
  • a layer of heavy duty PVC lines the cavity
  • a layer of 50mm High Density Polyurethane sheeting goes in next
  • A steel mesh is suspended above the Polyurethane by 30 mm spacers
  • A few pipes are cast in place to accommodate wiring to the kitchen island
  • Fritz visits us with his concrete pump and  fills the cavities to plinth height.

We then wait for 3 days spraying the concrete slab with water at regular intervals.





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