Vault Construction Details

[Chubby]

Ah, a barrier material formed of several different materials fastened together. That sounds more of a John Tann design than a Chubb one to me. It was probably a prototype TDR, being "turd and dried rushes".

[Huw Eastwood]

So it appears it was likely both mud and cow dung. After extensive research on the subject, the Massai favor a formed block of sorts for their homes. However, I suspect more of an intertwining of sticks to give the structural strength needed when the door is open. Wood has considerable strength when in tension

The enhanced intertwining of sticks was possibly something like this old archive photo, although probably more for in-situ poured vaults and not intended for basic block construction. From an unknown installation marked as "walls prepared for 15-ton anti-lance treasury door".

The inclusion of Turdbar reinforcement on some highest grade installations no doubt offered reassuring additional protection.

Ah, a barrier material formed of several different materials fastened together. That sounds more of a John Tann design than a Chubb one to me

Sounds classic victorian John Tann, but for a specialised and specific market in today's world they'd possibly consider later generation barriers like Dungcrete III or IV.

[Chubby]

I know some people prefer a freestanding strongroom, so it can be observed from all round. That one seems to be ideal from that point of view.

Actually talking of mud walls...... I once put a small SR in a location where the existing walls were adobe. They really were all over the place- corners were not square, walls ran off straight and vertical. So we put the block work in as specified- the blocks with 2 hollow squares in them, and then filled the hollows with a special mix. We had plenty of mix and so suggested filling the void between the adobe and the blockwork. It was anything from almost nothing up to 6" in places. The job was much better for it as the hole would have been a rat run.

Normally I would never pour concrete against an existing wall as the wall would almost inevitably crack, but there is so much give in adobe that this wasn't a problem.

As I sit here musing I just wonder what anybody thinks on existing walls. I was always told never to "use" an existing wall, or floor for that matter, but to build a wall to specification inside the existing. Of course it all depends what the customer orders.