We got it done today – the PEX is in.
PEX and the Critical Path
Since we have radiant heating (and cooling) in the house, we need to put PEX into the concrete. Our design was different in the ground floor as compared to the lower level.
On the main floor, we had to pour at least 3 inches of concrete over the hollow core concrete panels, as it forms a composite system (the concrete and the hollow core concrete panels). In those areas where we have hardwood floor, we will have 3 inches of concrete and 2¼ inches of hardwood flooring. Where concrete will be the finished floor, we will have 5¼ inches of concrete. In the lower level, we will have 3 inches of concrete where the concrete is the finished floor.
The reinforcing steel (rebar) is placed in the middle of the slab and we want the PEX close to the surface of the concrete. Thus, on the ground floor the rebar was put down first and then we attached the PEX on top of the rebar. In the lower level, where we have a 3 inch slab, our design is to put down 6-6-10-10 wire mesh, then attached the PEX to that. The rebar will go on top of the PEX.
Now that the concrete was poured on the ground floor, we cleaned up the debris that fell to the lower level and had to put in the PEX. Then, Bill Brown’s team could put in the forms and rebar.
Thus, the PEX is on the critical path.
Installing the PEX
Matt Jung sent one of his top technicians, Tom Rutledge, to install the PEX. Bryan was his helper.
Tom arrived at the job site on time and quickly assessed the situation. Bryan had just picked up the sheets of 6-6-10-10 wire mesh and we started.
We laid out the wire mesh evenly over the areas where the PEX would go, cutting it to shape and securing it with nylon ties. Then, it was time to start ‘picking rice’. This is the term used to describe the task of laying out the PEX and then securing it to the wire mesh with nylon ties. Just like picking rice.
It took most of the afternoon but we finished on time. It was satisfying to see the PEX in place, ready for the rebar.