TETRiS
Typical Construction Process

Step 1: Build up foundations to desired height and install DPC in accordance with normal building practices.	Step 2: Using 3 TETRiS T-blocks, set out the beams in accordance with design drawings.	Step 3: Build in closer blocks, air vents and any concrete blocks to make up areas where T-blocks do not bridge.
Step 4: Build inner leaf retaining wall to a height of 150mm above the top of the beams. Allow mortar to set.	Step 5: Sit TETRiS T-Blocks on the beams and cover any gaps and concrete blocks used with 75mm TETRiS gap strips (TGS).	Step 6: Place vertical edge strip (TVES) around floor’s perimeter and secure with the T-Fix pins supplied.
Step 7: If required, install steel reinforcement on supports. Carefully pour & level concrete to desired level.	Step 8: If required, power float concret to a smooth finish. Not required if using Agilia self levelling concrete.	Step 9: Protect the finished floor with a layer of sand or sheets of corrugated plastic sheeting.

Health and safety
TETRiS flooring should be installed in accordance with current healthand safety standards. Full COSHH details can be down loaded from the Further Information page.

Cutting TETRiS blocks
TETRiS blocks can be easily cut to size with a fine-toothed saw. Fine trimming of blocks can be done with a sharp knife.

Partition walls
Load bearing partition walls should not under any circumstances be constructed off the TETRiS blocks. Lightweight non-load bearing stud partitions (e.g. timber studs and plaster boards) can be located anywhere on the floor.
Non-load bearing lightweight concrete block partitions should only be located directly above and parallel to the concrete beams, or perpendicular to the beams.

Services
Should services need to penetrate a TETRiS block, use a section of the proposed pipe as a template and carefully cut out a hole no greater than 10mm wider than the diameter of the pipe or its collar with a bradawl saw. Draw the pipe through the TETRiS panel and plug with a suitable stop or the removed section of the TETRiS. This will eliminate the risk of contaminates entering the service pipes during construction.

Steel reinforcement
If using a steel reinforcement mesh, carefully cover the whole floor with the specified mesh on suitable spacers, ensuring the mesh is brought tightly to the edge of the TETRiS TVES.

Screed thickness'
C25 steel reinforced structural concrete must be a minimum 65mm thick. C30, C35 and Agilia structural concrete must be a minimum 75mm thick.

Caution
When pouring the concrete, care should be taken not to overload the TETRiS covered floor.

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