glass ballustrade

[jonathan oakes]

I am trying to fit toughened glass to existing steel posts. the panels will need to be approximately 1400mm x 700mm. How thick should the glass be?

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[Andrew Gabriel]

Building regs specify the force that ballustrades have to withstand. People have to be able to fall against them without breaking through. Translating that to the thickness of a piece of glass sounds like a rather specialist skill, and I imagine things like the types (and numbers/positions where relevant) of glass fixings (which you haven't mentioned) would be a significant factor. It would at least need to be toughened, and this case might demand laminated.

In other words, I think this is something you're going to have to find an architectural/commercial glass supplier to answer.