Anybody help with this one?
I'm trying to formulate some kind of idea of when mass concrete foundations
for 'ordinary' (ie two-storey suburban) houses came in to general use in the
The house I live in was built in 1906 in London (on clay) and has four
diminishing brick courses built off a 6" concrete base ie a total foundation
depth around 450mm/18". By modern standards, it sounds pitifully inadequate
(although it has worked fine so far).
When I extended the house recently, I had to put in 1800mm (about 6') mass
Question is: at what point did mass concrete foundations replace the old
bricks-off-the-subsoil approach? And what original guidance (either British
Standards/Building Regs/insurance requirements) prompted it?