Why We Pour Our Own Concrete
It is slower, it is more expensive to supervise, and it is the single decision that most determines whether a building here is sound in thirty years.
Ready-mix is faster. It arrives on a truck, it goes in the shutter, and the site moves on. We do not use it for structural pours, and the reason is simple: we cannot verify what is in it.
The mix is the building
Concrete strength is a function of the water-cement ratio, the aggregate grading, and the cure. Get the ratio wrong by a small margin and you lose a large fraction of design strength — and you will not see it. The building will stand. It will simply not last as long as it should.
We batch on site to a tested mix, we take cubes from every structural pour, and we crush them at seven and twenty-eight days. If a cube fails, that pour comes out.
What it costs us
Roughly two weeks per floor plate and a full-time supervising engineer. We consider that the cost of being able to tell a buyer the truth about what they are standing on.
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