old 150mm foundation in sub base


Postby classacitizen » Wed Jun 23, 2010 1:10 pm

Hi

Just poured the foundation for a new extension. Inside the foundation perimeter are some old strip footings for an outbuilding. These sit just below the level i am bringing my sub base/ hardcore level up to! About 20mm below. Should i remove them or just cover them over with hardcore??

cheers
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Postby page6159 » Sun Jul 25, 2010 9:56 pm

Depends.

Are you casting a slab over the top to form a solid floor? Or are you installing a suspended floor? (block and beam or timber)
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